VCX-80 Eight Channel VCA/Limiter RD-8/RW-8 Digital Remote...

VCX-80Eight Channel VCA/Limiter

RD-8/RW-8Digital Remote Controller

Operating Manual

ASHLY AUDIO INC.847 Holt Road Webster, NY 14580-9103 Phone: (716) 872-0010

Toll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www.ashly.com/

2

Operating Manual - VCX-80 Master VCA/Limiter, RD-8 and RW-8 Remote Controller

Table Of Contents

1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2 UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3 ACPOWERREQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

4 SECURITYCOVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

5 CONTROLS-VCX-80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 5 .1 Limiter Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 5 .2 Master Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 5 .3 Remote Active Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 5 .4 Remote Disable Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5 .5 Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

6 CONTROLS-RD-8/RW-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 6 .1 Channel Or Master On Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 6 .2 Channel Or Master Fader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 6 .3 Remote Disable Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

7 CONNECTIONSANDCABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 .1 Balanced vs . Unbalanced Audio Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 .2 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 .3 Channel Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 .4 Master Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 .5 Digital Connection - VCX-80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 7 .6 Digital Connection - RD-8/RW-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 7 .7 DC Control Voltage Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

8 APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 8 .1 Remotely Controlled 8-Channel Mic Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 8 .2 Remote Control of Stereo Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 8 .3 Remotely Controlled Stage Monitor Mix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 8 .4 Master Control Of Large Distibuted Sound System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 8 .5 DC Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

9 CHANGINGFACTORYCONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

10 TROUBLESHOOTINGTIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

11 WARRANTYINFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

12 DIMENSIONALDRAWINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

13 TECHNICALSPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

14 SCHEMATICDIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

3


1.INTRODUCTION

One of the many useful circuits to be developed for audio use is the VCA, or voltage controlled amplifier . A VCA circuit allows for accurate, low distortion level control with-out signal degradations sometimes encountered when using mechanical controls or long signal paths . VCA circuits can be found in compressor/limiter/expanders, noise gates, noise reduction systems, automatic mixers, VCA-Bus consoles, and other places where remote control or fast automatic system response is required . Designers at Ashly felt there was still a need for high quality VCA control which could be incorporated into professional sound systems without unnecessarily high cost or complication .

The Ashly VCX-80 contains eight fully-independent VCA channels in a single unit capable of limiting, remote level control, and mixing . By itself, the VCX-80 functions as a precise eight-channel limiter with recessed threshold adjust-ments on each channel . When connected to the Ashly RD-8 Remote Controller, DC control, or even computer control, the VCX-80 can control individual channel and master levels with a range of +20dB to -75dB . Each VCA channel comes con-figured with separate input and output jacks for patching into line-level signal paths, and can be reconfigured to use single jack TRS insertion for easily patching into mixing consoles .

The VCX-80 has a master output jack providing a summed output of all eight channels, allowing the unit to function as a fully-contained eight-channel remote controlled line level mixer . DC control of channel and master level uses a simple potentiometer circuit connected to a dedicated con-nector on the rear of the unit .

The RD-8 remote controller is a compact slide-fader remote level controller which can be desk-top situated or rack-mounted into two rack spaces (3 .5 inches) using the RD8-RM optional mounting bracket . This remote controller is also available as the RW-8 for wall-mounting into a standard 4-gang electrical box . The RD-8 controls the audio levels of the VCX-80 digitally over a standard XLR snake cable or mic cable . The RD-8 is powered entirely by the VCX-80 over the XLR data cable . The RD-8 can communicate to the VCX-80 over a 24 gauge snake cable in excess of 1/4 mile . The RD-8 also pulse-shapes the digital waveform to eliminate digital crosstalk noise into adjacent audio channels .

2.UNPACKING

As a part of our system of quality control, every Ashly product is carefully inspected before leaving the factory to ensure flawless appearance . After unpacking, please inspect for any physical damage . Save the shipping carton and all packing materials , as they were carefully designed to reduce to minimum the possibility of transportation damage should the unit again require packing and shipping . In the event that damage has occurred, immediately notify your dealer so that a written claim to cover the damages can be initiated .

The right to any claim against a public carrier can be forfeited if the carrier is not notified promptly and if the shipping carton and packing materials are not available for inspection by the carrier . Save all packing materials until the claim has been settled .

3.ACPOWERREQUIREMENTS

A standard IEC-320 AC inlet is provided on the rear panel of the VCX-80 to accept the detachable power cord shipped with the unit . Units distributed within the United States are preselected for 120VAC, 60Hz and should be plugged into a standard NEMA 5-15 3-wire grounded AC receptacle . Most units distributed outside the US are prese-lected and labeled for 240VAC, 50-60Hz and are shipped with the appropriate power cord .

The VCX-80 will perform normally from 98 to 125 volts AC . An internal line fuse is used . In the event of fuse failure, refer to a qualified service technician for servicing . Power consumption of the VCX-80 is 18 watts .

4.SECURITYCOVERS

For installations where it is desirable to protect the front panel controls from tampering or accidental misadjust-ment, use the Ashly security cover, which is available in both single and double rack space sizes . Installation is simple and does not require removal of the equipment from your rack . See your Ashly dealer for details .

Ashly Security Cover

4


5.CONTROLS-VCX-80

5 .1 Limiter Threshold

This recessed trimpot adjusts the signal threshold above which the limiter will become active . The units of this threshold dial are dBu where 0dBu = 0 .775Vrms . The limiter is a peak-detecting true VCA-type limiter with very low distortion . The input to output ratio of the limiter is approximately 10 to 1 with a relatively fast attack and moderate release time behavior . The adjacent yellow threshold LED indicates when the limiter circuit has been activated by an audio signal above the threshold level . To disable the limiter on any given channel, simply rotate its threshold adjustment fully clockwise to +23dBu, which is the maximum input signal of the unit .

5 .2 Master Attenuation

This control attenuates all eight channels uniformly . This control was designed as a simple means of turning-down all eight audio channels at the VCX-80 location in the event of feedback or other sound system problems . Normally this control should be set fully clockwise at 0dB attenuation.

5 .3 Remote Active Indicator

This green LED indicates when the VCX-80 is receiving data from the RD-8 or RW-8 . If this light goes out, it means the VCX-80 is no longer receiving data, due to a disconnection of the control data signal . In the event of remote control data inter-ruption, the VCA channel levels will "remember" their settings just before the data reception stopped and continue to operate as if

5


there were no changes happening . Reconnecting the remote data signal with the VCX-80 still operating will silently but instantly change the channel level settings to wherever the controller is currently set . If the VCX-80 AC power is switched on with no data reception, all eight channels and the master level will be set to unity gain (0dB) .

5 .4 Remote Disable Switch

This switch disables the RD-8 remote controller and returns all eight channels to unity gain . The adjacent red LED indicates when this switch is depressed . The nearby green Re-mote Active indicator will go off when the remote is disabled because the RD-8 does not send any data when it is disabled . After releasing the remote disable switch, all channels return to their respective levels set by the RD-8 remote controller .

5 .5 Power Switch

This front-panel push-button switches the AC power to the unit . The adjacent green LED indicates when the unit is powered on . If the green LED does not light, check to see if the unit is plugged into a live outlet . If there is still no light, refer the unit to a qualified service technician for possible fuse replacement .

6.CONTROLS-RD-8

The RD-8 and RW-8 are functionally the same. The difference is that the RW-8 is designed to mount as a wall plate using a standard 4-gang electrical box.

6 .1 Channel or Master On SwitchThese push-buttons switch the respective VCX-80 channel on or off . When switched on, the channel gain is controlled by the

setting of the respective channel fader on the RD-8 . When switched off, the respective VCX-80 channel is muted to approximately -75dB by the internal VCA circuit . The adjacent green LED is lit when the channel is switched on .

6 .2 Channel or Master FaderThese slide faders control the gain (volume) in dB of their respective channel in the VCX-80 . The Master fader controls the

gain of all eight channels together . That is to say, the master fader can raise or lower all eight channels uniformly without affecting the “mix” just like the master fader on a mixing console .

6 .3 Remote Disable IndicatorThis red LED illuminates when the RD-8 has been disabled by the Remote Disable Switch on the VCX-80 . When the Remote

Disable LED goes off, the RD-8 remote controller will resume normal operation . Avoid dramatically changing the level settings of the controller when disabling it or disconnecting the data line, as the VCX-80 master will immediately respond to any changes made to the controller upon re-connecting

6


7.CONNECTIONSANDCABLES

7 .1 Balanced vs . Unbalanced Audio Connections

Balanced signal connections are preferred in pro audio applications because of their improved immunity to induced hum and noise . A properly shielded and wired bal-anced input stage on any product will by design reject most unwanted noise picked up by the cable as well as minimize ground loop problems . Therefore it is always advantageous to use balanced connections when running signal more than ten or fifteen feet, although particularly noisy environments (high RFI, EMI, etc .) may require that even short cabling be balanced . Ashly TRS (tip-ring-sleeve) balanced connections use the tip as (+) and the ring as (-) signal, with sleeve used for ground . Ashly XLR connectors use pin 2 (+) and pin 3 (-) with pin 1 ground .

Unbalanced connections are used mostly for short distance, high level signals (0dBu nominal) . Most external EMI noise pick-up will be masked under the noise floor of the signal, assuming there is little or no gain following the unbalanced signal . If a gain stage does follow a signal, or if externally sourced noise persists, use balanced connectors . The main advantage of unbalanced connectors is cost, as an unbalanced (tip-sleeve) plug costs less and is easier to wire than a balanced (TRS) plug .

The VCX-80 is factory configured for separate input and output 1/4 inch tip-ring-sleeve (TRS) jacks . Used this way, inputs and outputs can be wired balanced or unbalanced . An internally selected single jack TRS insert is also available (see section 9 .1) .

7 .2 Inputs

The inputs are 20K ohm active balanced or 10K ohm unbalanced on 1/4 inch TRS jacks .

If the single jack TRS insert mode is selected inter-nally (see section 9 .1), the In jack serves as the single TRS insert point . In this case, the VCX-80 input is on the tip and the output is on the ring of the In jack . This convention is compatible with most mixing consoles equipped with single TRS insert jacks, but check your mixer specifications before assuming this to be true .

7 .3 Channel Outputs

The outputs are 200 ohm pseudo-balanced (balanced impedance but signal drive on tip only) on 1/4 TRS jacks .

If the single TRS insert jack mode is selected inter-nally (see section 9 .1), the output signal is taken from the ring of the In jack and the Out jack must not be used .

7 .4 Master Output

This 1/4 inch TRS jack provides a 200 ohm pseudo-balanced output which is a summed mix of all eight channel outputs . The gain from any one input channel to Master Out-put is -6dB so that a mix of several audio channels will have approximately the same volume as one of the input channels .

7 .5 Digital Connection - VCX-80

The Female XLR jack on the rear of the VCX-80 ac-cepts the digital control signal from the RD-8 or RW-8 remote controller . The data signal can be sent through one channel of a standard audio snake without affecting adjacent audio chan-nels, but do not use an isolation transformer in the data line.

The details of the digital format are given in the specifications . Pin 2 is used for the data input signal to the VCX-80 . Pin 3 is used as a +26VDC power supply signal for powering the RD-8 remote controller . Pin 1 is ground . If any

7


of the three pin connections are shorted or opened, the VCX-80 will continue to operate without any clicks or jumps in signal levels - the channel levels simply remain at their level settings before the fault occurred .

The VCX-80 may also be controlled by a personal computer or touch-panel controller via RS-232 or RS-422 . Data input is accomplished on either the XLR jack (pin 2) or on the DC Control Voltage Connector (pins 13 or 14) . Ashly and third-party developers are currently working to expand methods of control and integration of this product into exist-ing control systems . Details will become available as such systems are developed .

The VCX-80 may also be internally addressed to one of 32 banks, allowing for control of up to 256 channels from a single data line . Contact a factory Technical Service Representative (1-800-828-6308 ext .125) for details .

7 .6 Digital Connection - RD-8

The male XLR jacks on the side and bottom of the RD-8 are wired in parallel so that an XLR plug may be in-serted into the side for desktop operation or into the bottom for rack-mount operation . Pin 2 is the data output, pin 3 is the positive DC voltage input, and pin 1 is ground . This XLR data output may be “split” with an XLR Y-cable to feed two VCX-80 units to give stereo 8-channel capability . Also, by installing factory customized firmware into the device ROM, the RD-8 slide faders can be assigned to any (or several) arbi-trary VCX-80 channels . Contact a factory Technical Service Representative for details .

7 .7 DC Control Voltage Connection

This DB 15-pin female connector allows for direct DC voltage control of the internal VCA circuits, as well as the master level control . Direct DC control of the VCX-80 meets the remote control objectives with minimal hardware require-ments and allows for custom "low-tech" hardware interfaces . Two wires are used to supply positive and negative DC voltage to ordinary 10K ohm linear-taper potentiometers, and a wire is used to return the wiper of each control to its respective channel (see pinout below) . Telephone wire with eleven conductors or more is a good choice for this application, and since only DC voltage is used, control line distance is not a major concern .

Pin 1 Channel 1 DC control inputPin 2 Channel 2 DC control inputPin 3 Channel 3 DC control inputPin 4 Channel 4 DC control inputPin 5 Channel 5 DC control inputPin 6 Channel 6 DC control inputPin 7 Channel 7 DC control inputPin 8 Channel 8 DC control inputPin 9 Master DC control inputPin 10 +15VDC - Connect to pot CCWPin 11 (Ground for data input)Pin 12 -4VDC - Connect to pot CWPin 13 (Digital data input - same as XLR pin 2)Pin 14 (Digital data input - same as XLR pin 2)

8


8.APPLICATIONS

The VCX-80 was designed with open architecture to take full advantage of the creative minds of Ashly customers . Highlighted here are a few common applications, although the possibilities extend beyond the scope of this manual . In some instances there is a form of computer control shown . To obtain information regarding implementation and availability of soft-ware, call a Technical Service Representative toll free at 1-800-828-6308 ext .125 .

8.1RemotelyControlled8-ChannelMicMixer

In this example, the VCX-80 channels are inserted into the channel insert jacks of a compact mic mixer such as the Ashly MX-508 . The RD-8 desk-top remote controller (or RW-8 if a wall-plate version is desired) can be located far away from the main audio equipment rack, allowing for stealth sound system operation . A limited number of knobs, lights, and buttons saves the non-technical VIP operator from distraction and potential embarrassment, while giving them a great deal of overall system control . In addition to its simplified interface, each VCX-80 channel has a tamper-proof limiter to place a ceiling on the audio levels . Remember, although the VCX-80 has up to 20dB of gain, it is best to apply any significant gain at the mixer's front end (input preamp) .

8.2RemoteControlOfStereoSources

Here the RD-8 remote con-troller or a touch panel controller may be used to simultaneously control two VCX-80 units for remote control of ste-reo audio sources . Since each VCX-80 has a master output, no additional mixer is needed . Contact a factory Technical Service Representative for details on using a touch panel controller .

9


8.3 Remotely ControlledStageMonitorMixer

In live sound where a separate stage mixer is used for the monitor sys-tem, one or several VCX-80 units can be inserted into the monitor mixer's group or channel insert points to control moni-tor mix levels from the front-of-house mixing position, eliminating the need for a second sound engineer on stage . Each RD-8 remote controller is connected using an available snake channel (no transformers) . The RD-8 can be rack mounted using an optional rack mount-ing bracket allowing one or two RD-8’s to mount in two rack spaces (3 .5 inches) .

One or more VCX-80 units can also be used to allow stage musicians to mix their own monitors from where they stand . If there is only a front of house console in the system, direct channel, vocal subgroups, or instrument subgroup outputs can feed into VCX-80 inputs . A separate RD-8 controller is used on stage with a VCX-80 for each monitor zone .

8.4MasterControlofDistributedSoundSystem

In this example, a personal computer is used to communicate through its standard RS-232 serial port to several VCX-80 units . 256 total channels are addressable by the PC . Each VCX-80 can be internally selected to respond to any of 32 banks of 8 contiguous channels . Contact a Technical Service Representative for information regarding software availability .

8.5DCRemoteControl

In this example, the remote control functions of the VCX-80 can be used without a "smart" controller . All you need is the controls, some wire, and a box or panel to mount them in (see sec .7 .7 for correct wiring and pin-out) . We recommend using 10K ohm linear taper potentiometers to connect directly to the control voltage port of the VCX-80 . The dedicated DB 15 pin connector is used to connect your control device to the internal VCA circuits . It is also important to use only the DC voltage supplied by the VCX-80 in order to obtain proper control voltage levels from the potentiometers .

10


9.0CHANGINGFACTORYCONFIGURATIONS

9 .1 Changing to Single TRS Insert Jack

The VCX-80 is shipped from the factory configured for separate input and output jacks on each channel . Each channel may be independently configured for a single TRS insert jack where the VCX-80 input is on the tip and the output is on the ring . To make this change, refer the following procedure to a qualified service technician .

Unplug the unit’s AC power cord . Remove the top cover which is fastened by 7 - 6/32 screws . Locate a 3-pin header labeled JX03 near the input and output jacks of the corresponding channel X . Remove the shunt bar from the normal position (2) indicated on the circuit board legend and place the shunt on the other position (1) of the 3-pin header . To avoid possible confusion at a later time, indicate somewhere on the VCX-80 back panel that the In/Out configuration has been modified to single jack insertion .

10.TROUBLESHOOTINGTIPS

10 .1 No Output

Check AC power - is green power LED indicator on? Check input/output connections - are they reversed? Is the Master Attenuator control turned fully up? Are remote controller channels switched on? Are the input/output jacks configured correctly (one jack insert versus two jacks) for the application?

10 .2 Very Little Output Signal

Are the yellow Limiter Threshold indicators on often? Rotate the recessed Threshold controls clockwise to allow greater output signals to pass unlimited . Check the Master Attenuator control - normally this control should be fully clockwise at 0dB . Check the RD-8 remote controller -the fader levels should normally be operated around 0dB .

10 .3 Distorted Sound

The maximum input signal level is +23dBu = 10 .95Vrms . Above this input level, input clipping distortion will occur . Also, if the input signal level plus the gain set by the remote controller goes above +23dBu, output clipping distortion will result .

10 .4 Excessive Hum or Noise

Hum and buzz noise is usually caused by a “ground loop” between audio components . Try using balanced input and output connections between the VCX-80 and other com-ponents in the system . Also, try to power all components in the system from a single AC branch circuit .

Noise can also be caused by a large amount of gain applied to an insufficiently low input signal . The VCX-80 is not designed to feed microphones directly into the inputs without a mic preamp first. The VCX-80 is essentially a line level unity-gain device, meaning it is designed to be fed by a

11


nominal 0dBu line level signal and its output should typically be 0dBu in level . To ensure proper gain structure in your sound system, press the remote disable switch in and rotate the Master Attenuator control fully clockwise so that all VCX-80 channels are at unity gain . Adjust your signal source which precedes the VCX-80 for nominal 0dBu signal levels, then push the Remote Disable switch out for remote controllability .

If you still have problems, contact your Ashly dealer or call Ashly direct at (800) 828-6308 ext .125 . In New York State call (716) 872-0010 .

11. WARRANTYINFORMATION

We thank you for expression of confidence in Ashly products . The unit you have just purchased is protected by a limited five year warranty . To establish the warranty, you must first complete and mail the warranty card attached to your product .

Fill out the information below for your records .

Model Number _______________________

Serial Number ________________________

Dealer ______________________________

Date of Purchase ______________________

Dealer’s Address ______________________

___________________________________

___________________________________

Dealer’s Phone _______________________

Salesperson __________________________

OTHER INFORMATION:

12. DIMENSIONS

Rack-Mounting Kit For One Or Two RD-8 Remote Controllers

12


13. VCX-80SPECIFICATIONS

13.1 INPUTInput Type: 1/4" tip-ring-sleeveInput Impedance:20K ohm balanced, 10K ohm unbalancedMax input level: +23dBuInput jack may be internally selected as a single

in/out insert

13.2 OUTPUTOutput Type: 1/4" tip-ring-sleeveOutput Impedance: 200 ohm pseudo-balanced,

100 ohm unbalancedMax output level: +22dBu

13.3 AUDIOPERFORMANCENominal Gain: 0dB +/-0 .5dBGain Range: +20dB to -75dBFrequency Response: +/-0 .2dB 20Hz-20KHzTHD: <0 .01% at 0dBu and 1KHz<0 .15% at +20dBu, 20Hz-20KHzOutput Hum & Noise:<-94dBu 20Hz-20KHz unweightedCrosstalk: <-80dB at 20KHz

13.4 LIMITERThreshold Range: 23dBu to +22dBuCompression Ratio: 10:1

13.5 DATAINPUTInput Type: XLR jack pin 2=data, pin 3=+V, pin 1=groundData Format: 2Vp raised-cosine, RS-232 or RS-422;1 start, 9 data, 1 stop bits at 4800 baud

13.6 DCCONTROLINPUTSInput Type: DB 15-pin female connectorControl Voltage: -4V to +15V provided for external 10K ohm potentiometers

13.7 OVERALLSize: 19"L x 1 .75"H x 6"DPower Requirements: 98-125VAC, 50-60Hz18W (240V available)Shipping weight: 9 lbs .

13.8 RD-8,RW-8SpecificationsFader Range: +10dB to -75dB (master fader at 0dB)Data/Power Connector: Male XLR jackMax Data Cable Length:1500 ft . of 24 ga . twisted pairData Format: 4800 baud, 2Vp raised cosineData crosstalk to audio: <-120 dB along 1000' of 150 ohm shielded cable

Size: 7 .5"L x 3 .5"H x 1 .75"DPower Requirements:Phantom powered by VCX-80Shipping Weight: 3 lbs .

13


Fig

ure

14.1

: R

D-8

/RW

-8 R

emot

e C

ontr

ol S

chem

atic

Dia

gram

R32

C16

C15

C14

C13

R43

D13

VR1

SW2

VR9

R10

R51

VR2

D14

R44

R45

D15

VR3

R52

SW3

SW4

R53

VR4

D16

C12

R24

Y1

C19

C20

R40

++

C18

C21

-++ -U2

A

R39

C5

R36

D1

C17

R41

R42

R8R6

R12

R5

- + +-

-+ + -R9

Q1

R46

R50

R7

SW5

R54

R56

D20

VR8

R38

SW8

SW7

R37

VR7

D19

R49

R48

D18

VR6

C11

D4

R33

R4

SW1

C10

C9R1

VR5

D17

++

C2

D2

D5

R15

D7 D8

++ C6

D9

D10

++C7

++C8

R11

R2

TP1

R14

D3

123

J1,2

++

C4

R3

C1

SW9

D6

C3

MC68

HC11

A1FN

STRB

/RW

STRA

/AS

VRL

VRH

MODA

/LIR

MODB

/VST

BY

/IRQ

/XIR

Q

/RES

ET

XTAL

EXTA

L

VSS

VDD

PE7/

AN7

PE6/

AN6

PE5/

AN5

PE4/

AN4

PE3/

AN3

PE2/

AN2

PE1/

AN1

PE0/

AN0

PD5/

SSPD

4/SC

KPD

3/MO

SIPD

2/MI

SOPD

1/Tx

DPD

0/Rx

D

PC7

PC6

PC5

PC4

PC3

PC2

PC1

PC0

PB7

PB6

PB5

PB4

PB3

PB2

PB1

PB0

PA7/

PAI/

OC1

PA6/

OC2/

OC1

PA5/

OC3/

OC1

PA4/

OC4/

OC1

PA3/

OC5/

OC1

PA2/

IC0

PA1/

IC2

PA0/

IC3E

52 P

IN P

LCC

51523219181787126

504846444947454325242322212016151413121110946353637383940414227282930315 3234 33

U3

R34

R47

D12

D11

R35

R55

SW6

D24

D21

R22

R17

R31

- + +-U1

A- + +-

U1

R23

R13

R16

-3.7

V

10.5

mA T

YP

22.5

mA

-3.7

V

SYNC

+15.

1V

X

+25V

DC

.5m

MAX

6mA

MAX

6.7m

A

+5

+15.

1V

+15.

1V

MASTER

2Vpp

21mA

TYP

8-BI

T DA

C

CH.8

CH.7

CH.6

CH.5

CH.4

CH.3

CH.2

IN IN IN IN ININININ

IN

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

CH.1

ON ON ON ON ONONONON ON

NEG.

CHA

RGE

PUMP

DISA

BLE

REMO

TE

RESE

T CI

RCUI

T

+5 T

O uC

4800

bps

+5+5

+5

+5

+5

+5

DATA

OUT

FEMA

LE X

LR

3 21

1N75

1

231

150K

470K

22

560

X

47U

.1U

680

10K

1K

10K

10K

10K

B50K

B50K

B50K

B50K

B50K

10K

10K

10K

10K10

K

B50K

B50K

B50K

B50K

10.0

K10

.0K

10.0

K

3418

410

.0K

10.0

K

10.0

K

40.2

K

3418

434

184

3418

4

4123

.001

U

4148

1.0K

10.0

K10

.0K

10.0

K

300K

20K

1M 300K

150K

40.2

K40

.2K

10K

40.2

K

1M10

K

10K

27K

4003

4003

4003

.015

U

4148

4148

4148

4148

47U

GRN

GRN

GRN

GRN

GRN

GRN

GRN

GRN

GRN

10K

10K

10K

10K

10K

10K

10K

10K

10K

RED

LM39

3

4148

4148

47U

47U

47U

47U

758

10V

100

.1UF

X 8

10K

10K

10K

10K

5.1V

.1U

.1U

10M

8.0M

Hz18

P18

P

567

8109

141213

114

231

1

COPY

RIGH

T 19

96 A

SHLY

AUD

IO I

NC.

UNAU

THOR

IZED

DUP

LICA

TION

IS

PROH

IBIT

ED B

Y LA

W

WEBSTER, NY 14580-9103

847 HOLT ROAD

8-10

-95

B10

S530

1B.S

CH

G.G.

XREMO

TE V

CA C

ONTR

OLLE

R PC

B

DRAW

ING

NO.

SCHE

MATI

C DI

AGRA

M

REV.

DATE

:

DATE

:

OFSH

EET

SCAL

E:

APPR

OVED

:

DRAW

N:

ASHLY AUDIO INC.

ASHLY

14. SCHEMATICS

14


Figure 14.2: VCX-80 Eight Channel VCA Schematic Diagram

+

C9

J_3

C_6

R_5

R_4+

C_4

C_5

-

+

U1B

R_1

-

+ U6C

R59

+C_1

VR2

R58

D24

D17

D21

R18

-

+U4A

R28

D10

R37

X7X6X5X4X3X2X1X0

GCBA

425112151413

VEE

3

16

891011

6 /EN

VCC

7

HC4051

-

+

U_3B(C)

R13

-

+ U1A

R12

R14

Q7

R_6C_7

R63

R11

C13

R_8

R_15

R_13

1 86254

3 7

U_2

J_1

R_16R_17

R_9R_19

Q_2-

+ U_4B(C)

R_24

R_25

D_2

D_1

-

+U_4A(D)R_28

VR_3

R_23

R_26

-

+

U_3A(D)

+C_10

+C_9

R_22

R_21

R_20

R33

R_32

Q_3D_3

D7 D6

D3 D5

C2

+

C1 R3

D8

C4

Q1

L1-8R6

R5R4

D2

D4

R1L1-7

-

+ U6D

R62

R61

Q5

R65

R52

R_12

R_14R_10

R_11

R31

Q2

J3

SW1

+C14

D30

R_2R_3

Q_1

R_29

R22

Q3

D23

R29

C19

D27

D20

R60

TP3TP2

R30

R24

R25

R_27

C18+C17

R23

C15C16

R27

X1

R55

R26

VR_1 R_18

R57

R10

D28

C20

D29

R21

R20

R9

SW3L

SW3R

R45R44

-

+

U6B -

+ U6A

R56

R54

C21

VR1

R7

R66

R67R_30

R_31C11

U3

D25

D26

D9

D12

+

C10

D11J2

+

C6

+

C5

U1

U2S1 SW2

+C7

+

C8

R53

C3

D22

R15

R16

-

+

U4B

R17

R19

TP1

Q6

R_7C_2

C23

R68

C22

VR_2

C12R8

Q4

J_2

R36

D18 D19

U8

R64

1 23

J1

J4

TP4

-

+ U8B

-

+ U8A

R69R71

R72

R70

C26C25

+

C24

R_33

J4-12

J6

R73

MC68HC11A1FN

STRB/RWSTRA/AS

VRL

VRH

MODA/LIR

MODB/VSTBY

/IRQ

/XIRQ

/RESET

XTAL

EXTAL

VSS

VDD

PE7/AN7PE6/AN6PE5/AN5PE4/AN4PE3/AN3PE2/AN2PE1/AN1PE0/AN0

PD5/SSPD4/SCK

PD3/MOSIPD2/MISOPD1/TxDPD0/RxD

PC7PC6PC5PC4PC3PC2PC1PC0

PB7PB6PB5PB4PB3PB2PB1PB0

PA7/PAI/OC1PA6/OC2/OC1PA5/OC3/OC1PA4/OC4/OC1PA3/OC5/OC1

PA2/IC0PA1/IC2PA0/IC3

E

52 PIN PLCC

51

52

3

2

19

18

17

8

7

1

26

5048464449474543

252423222120

161514131211109

46

3536373839404142

2728293031

5

32

3433

U5

x 11.01uF X

34184

34184

34184

20K

LOG25K

X

-18

7918

7818

35V1000

35V1000

4003 4003 4003

4003

THRESH

100K

6.8K

4125

62K

15K

4123

1.5uF

1.5uF

68K

10:1RATIO

100

1K

CW

LIMIT

15K

3-12-96

CDRAWING NO. 10S5300C

WEBSTER, NY 14580-9103847 HOLT ROAD

VCX-80

G.G.

8 CHANNEL REMOTE VCA/LIMITERSCHEMATIC DIAGRAM

REV.

DATE:

DATE:

OFSHEETSCALE:

APPROVED:

DRAWN:

ASHLY AUDIO INC.ASHLY

COPYRIGHT 1996 ASHLY AUDIO INC.UNAUTHORIZED DUPLICATION IS PROHIBITED BY LAW

10.00K IS +/-.1%

DATA INPIN 13FROM J6

CW

L

RINOUT

IEC 320ACINLET

CW

109

BUSSUMMING

SUMMED OUTPUTCHANNELS 1-8

-23dBU TO +23dBu

-4VDC

$00=+15.1V=-75dB

-4VDC

35mA LIMIT

33mA I LIMIT

DATA IN

DACSYNC

81353617241411

32

1

31

2

32

110

11

122

3

4

5120/240

1

3

2

5.33dB/VOLT SCALE-75dB TO +20dB RANGE

$FF=-3.75V=+20dB$00=+5.81V$FF=-1.45V

Vo = (-0.727)Vi + 5.81$CD=8V ON RESET

$00=0V$FF=9.96V

0dB SHIFT

ADJNULL

-18

-18

DATA DISABLE

DISABLETO DATA

+15

10K LINEAR

HC11 PIN 25FROM PD5

+5

NEUT

GROUND

HOT

BANK SELECT

4 3 2 1 0

+5

UNIVERSAL+5

48KHz LPF

2-JACK1-JACK

TYPE:INSERT

POWER

10.0K

40.2K

THRESH.1 VOLT

RING=OUTTIP=INPUT

FOR 1-JACK:

+18

(XLR PIN 2)TO DATA IN

CONNECTOR FOR DC CTRLMASTER

EXAMPLE OF DC CONTROL OF CHANNEL 1:

240V120V

IN/IO

CW

TO DSUB

4800bps

RESET CIRCUIT+5

MASTER ATTENUATOR

+18

8-BIT DAC

CW

DISABLEREMOTE

IN

OUT

DISABLEREMOTE

IN

OUT

LIMI

T

-18

ATTACK

RELEASE

IN SERIES7 LED'S

-18

-18

UNREG.+27

+18

+18

+18

+78VDC

-18

+5+18

1 OF 8 CHANNELS

LEVEL SHIFTER/SCALER

-18

-18

DATAREMOTE

+5+5

+5

+18

ADJSYM

+18

+5V

+5V

+5V

+5V

+5V

DATA INPUT

51P710665VAC FROM

-18

VoVi

OUTPUTCH.1

CH.1

150K470K

751

XX4.7K

100V

10K47

100100

45604560

10K

10K

JUMP

9.76K

1M10U

33

33

XX

22

X

X

X

X

9316.34K18K

341843418434184

34184

220

22010K

10.0K

1K

2.7K

78L15

10K

5.1V

4125

4125

4123

100K

10K X 6JUMP

X

1N270

3.3K

.001U

ON SINK

18P18P8MHz

10M

4123

27K

4125

4148

1M .1U

27P

27P

19.6K

19.6K68

2K

2K

2K

18K

G

1K

100K

456034184

B10K

10.0K

10.0K

10.0K

1M10K

10K

27K

10P

LM393

4148

4148

.1U

.1U

300K

20K10K

40.2KJUMP

10.00KJUMP

1M

300K150K40.2K40.2K10.00K10.00K

10K

RED

330

51P7106

4148

4148

YEL

2.4K

2.4K

4123

414810K

1M

2K

971

100V.1U1/2AGC

4003

1.5U1.5U

1.5U

4003

4003

7805

GREEN

10K

754

LM393

47U

4.7K

1M

2150A

-18

+18

300K50K

100

100

27P

10.0K

10.0K

10.0K

10.0K

15.8K

10K X 3

10K

.1U10U

47UF6.8V10K

FEMALE XLR

4003

4003

4003

.1uF

10

TIP29C

4123

.00120K

100V

27V

100uF

4003's

68

4560

47U

-18

10K

13-14

3

2

1

111287654321109

D15 D14

D13D16

15


+

C9

J_3

C_6

R_5

R_4+

C_4

C_5

-

+

U1B

R_1

-

+ U6C

R59

+C_1

VR2

R58

D24

D17

D21

R18

-

+U4A

R28

D10

R37

X7X6X5X4X3X2X1X0

GCBA

425112151413

VEE

3

16

891011

6 /EN

VCC

7

HC4051

-

+

U_3B(C)

R13

-

+ U1A

R12

R14

Q7

R_6C_7

R63

R11

C13

R_8

R_15

R_13

1 86254

3 7

U_2

J_1

R_16R_17

R_9R_19

Q_2-

+ U_4B(C)

R_24

R_25

D_2

D_1

-

+U_4A(D)R_28

VR_3

R_23

R_26

-

+

U_3A(D)

+C_10

+C_9

R_22

R_21

R_20

R33

R_32

Q_3D_3

D7 D6

D3 D5

C2

+

C1 R3

D8

C4

Q1

L1-8R6

R5R4

D2

D4

R1L1-7

-

+ U6D

R62

R61

Q5

R65

R52

R_12

R_14R_10

R_11

R31

Q2

J3

SW1

+C14

D30

R_2R_3

Q_1

R_29

R22

Q3

D23

R29

C19

D27

D20

R60

TP3TP2

R30

R24

R25

R_27

C18+C17

R23

C15C16

R27

X1

R55

R26

VR_1 R_18

R57

R10

D28

C20

D29

R21

R20

R9

SW3L

SW3R

R45R44

-

+

U6B -

+ U6A

R56

R54

C21

VR1

R7

R66

R67R_30

R_31C11

U3

D25

D26

D9

D12

+

C10

D11J2

+

C6

+

C5

U1

U2S1 SW2

+C7

+

C8

R53

C3

D22

R15

R16

-

+

U4B

R17

R19

TP1

Q6

R_7C_2

C23

R68

C22

VR_2

C12R8

Q4

J_2

R36

D18 D19

U8

R64

1 23

J1

J4

TP4

-

+ U8B

-

+ U8A

R69R71

R72

R70

C26C25

+

C24

R_33

J4-12

J6

R73

MC68HC11A1FN

STRB/RWSTRA/AS

VRL

VRH

MODA/LIR

MODB/VSTBY

/IRQ

/XIRQ

/RESET

XTAL

EXTAL

VSS

VDD


PD5/SSPD4/SCK






E

52 PIN PLCC

51

52

3

2

19

18

17

8

7

1

26

5048464449474543

252423222120

161514131211109

46

3536373839404142

2728293031

5

32

3433

U5

x 11.01uF X

34184

34184

34184

20K

LOG25K

X

-18

7918

7818

35V1000

35V1000

4003 4003 4003

4003

THRESH

100K

6.8K

4125

62K

15K

4123

1.5uF

1.5uF

68K

10:1RATIO

100

1K

CW

LIMIT

15K

3-12-96



VCX-80

G.G.


REV.

DATE:

DATE:

OFSHEETSCALE:

APPROVED:

DRAWN:



10.00K IS +/-.1%


CW

L

RINOUT

IEC 320ACINLET

CW

109

BUSSUMMING


-23dBU TO +23dBu

-4VDC

$00=+15.1V=-75dB

-4VDC

35mA LIMIT

33mA I LIMIT

DATA IN

DACSYNC

81353617241411

32

1

31

2

32

110

11

122

3

4

5120/240

1

3

2


$FF=-3.75V=+20dB$00=+5.81V$FF=-1.45V

Vo = (-0.727)Vi + 5.81$CD=8V ON RESET

$00=0V$FF=9.96V

0dB SHIFT

ADJNULL

-18

-18

DATA DISABLE

DISABLETO DATA

+15

10K LINEAR

HC11 PIN 25FROM PD5

+5

NEUT

GROUND

HOT

BANK SELECT

4 3 2 1 0

+5

UNIVERSAL+5

48KHz LPF

2-JACK1-JACK

TYPE:INSERT

POWER

10.0K

40.2K

THRESH.1 VOLT

RING=OUTTIP=INPUT

FOR 1-JACK:

+18




240V120V

IN/IO

CW

TO DSUB

4800bps

RESET CIRCUIT+5

MASTER ATTENUATOR

+18

8-BIT DAC

CW

DISABLEREMOTE

IN

OUT

DISABLEREMOTE

IN

OUT

LIMI

T

-18

ATTACK

RELEASE

IN SERIES7 LED'S

-18

-18

UNREG.+27

+18

+18

+18

+78VDC

-18

+5+18

1 OF 8 CHANNELS


-18

-18

DATAREMOTE

+5+5

+5

+18

ADJSYM

+18

+5V

+5V

+5V

+5V

+5V

DATA INPUT

51P710665VAC FROM

-18

VoVi

OUTPUTCH.1

CH.1

150K470K

751

XX4.7K

100V

10K47

100100

45604560

10K

10K

JUMP

9.76K

1M10U

33

33

XX

22

X

X

X

X

9316.34K18K

341843418434184

34184

220

22010K

10.0K

1K

2.7K

78L15

10K

5.1V

4125

4125

4123

100K

10K X 6JUMP

X

1N270

3.3K

.001U

ON SINK

18P18P8MHz

10M

4123

27K

4125

4148

1M .1U

27P

27P

19.6K

19.6K68

2K

2K

2K

18K

G

1K

100K

456034184

B10K

10.0K

10.0K

10.0K

1M10K

10K

27K

10P

LM393

4148

4148

.1U

.1U

300K

20K10K

40.2KJUMP

10.00KJUMP

1M

300K150K40.2K40.2K10.00K10.00K

10K

RED

330

51P7106

4148

4148YE

L

2.4K

2.4K

4123

414810K

1M

2K

971

100V.1U1/2AGC

4003

1.5U1.5U

1.5U

4003

4003

7805

GREEN

10K

754

LM393

47U

4.7K

1M

2150A

-18

+18

300K50K

100

100

27P

10.0K

10.0K

10.0K

10.0K

15.8K

10K X 3

10K

.1U10U

47UF6.8V10K

FEMALE XLR

4003

4003

4003

.1uF

10

TIP29C

4123

.00120K

100V

27V

100uF

4003's

68

4560

47U

-18

10K

13-14

3

2

1

111287654321109

D15 D14

D13D16

+

C9

J_3

C_6

R_5

R_4+

C_4

C_5

-

+

U1B

R_1

-

+ U6C

R59

+C_1

VR2

R58

D24

D17

D21

R18

-

+U4A

R28

D10

R37

X7X6X5X4X3X2X1X0

GCBA

425112151413

VEE

3

16

891011

6 /EN

VCC

7

HC4051

-

+

U_3B(C)

R13

-

+ U1A

R12

R14

Q7

R_6C_7

R63

R11

C13

R_8

R_15

R_13

1 86254

3 7

U_2

J_1

R_16R_17

R_9R_19

Q_2-

+ U_4B(C)

R_24

R_25

D_2

D_1

-

+U_4A(D)R_28

VR_3

R_23

R_26

-

+

U_3A(D)

+C_10

+C_9

R_22

R_21

R_20

R33

R_32

Q_3D_3

D7 D6

D3 D5

C2

+

C1 R3

D8

C4

Q1

L1-8R6

R5R4

D2

D4

R1L1-7

-

+ U6D

R62

R61

Q5

R65

R52

R_12

R_14R_10

R_11

R31

Q2

J3

SW1

+

C14

D30

R_2R_3

Q_1

R_29

R22

Q3

D23

R29

C19

D27

D20

R60

TP3TP2

R30

R24

R25

R_27

C18

+

C17

R23

C15C16

R27

X1

R55

R26

VR_1 R_18

R57

R10

D28

C20

D29

R21

R20

R9

SW3L

SW3R

R45R44

-

+

U6B -

+ U6A

R56

R54

C21

VR1

R7

R66

R67R_30

R_31C11

U3

D25

D26

D9

D12

+

C10

D11J2

+

C6

+

C5

U1

U2S1 SW2

+

C7

+

C8

R53

C3

D22

R15

R16

-

+

U4B

R17

R19

TP1

Q6

R_7C_2

C23

R68

C22

VR_2

C12R8

Q4

J_2

R36

D18 D19

U8

R64

1 23

J1

J4

TP4

-

+ U8B

-

+ U8A

R69R71

R72

R70

C26C25

+

C24

R_33

J4-12

J6

R73

MC68HC11A1FN

STRB/RWSTRA/AS

VRL

VRH

MODA/LIR

MODB/VSTBY

/IRQ

/XIRQ

/RESET

XTAL

EXTAL

VSS

VDD


PD5/SSPD4/SCK






E

52 PIN PLCC

51

52

3

2

19

18

17

8

7

1

26

5048464449474543

252423222120

161514131211109

46

3536373839404142

2728293031

5

32

3433

U5

x 11.01uF X

34184

34184

34184

20K

LOG25K

X

-18

7918

7818

35V1000

35V1000

4003 4003 4003

4003

THRESH

100K

6.8K

4125

62K

15K

4123

1.5uF

1.5uF

68K

10:1RATIO

100

1K

CW

LIMIT

15K

3-12-96



VCX-80

G.G.


REV.

DATE:

DATE:

OFSHEETSCALE:

APPROVED:

DRAWN:



10.00K IS +/-.1%


CW

L

RINOUT

IEC 320ACINLET

CW

109

BUSSUMMING


-23dBU TO +23dBu

-4VDC

$00=+15.1V=-75dB

-4VDC

35mA LIMIT

33mA I LIMIT

DATA IN

DACSYNC

81353617241411

32

1

31

2

32

110

11

122

3

4

5120/240

1

3

2


$FF=-3.75V=+20dB$00=+5.81V$FF=-1.45V

Vo = (-0.727)Vi + 5.81$CD=8V ON RESET

$00=0V$FF=9.96V

0dB SHIFT

ADJNULL

-18

-18

DATA DISABLE

DISABLETO DATA

+15

10K LINEAR

HC11 PIN 25FROM PD5

+5

NEUT

GROUND

HOT

BANK SELECT

4 3 2 1 0

+5

UNIVERSAL+5

48KHz LPF

2-JACK1-JACK

TYPE:INSERT

POWER

10.0K

40.2K

THRESH.1 VOLT

RING=OUTTIP=INPUT

FOR 1-JACK:

+18




240V120V

IN/IO

CW

TO DSUB

4800bps

RESET CIRCUIT+5

MASTER ATTENUATOR

+18

8-BIT DAC

CW

DISABLEREMOTE

IN

OUT

DISABLEREMOTE

IN

OUT

LIMIT

-18

ATTACK

RELEASE

IN SERIES7 LED'S

-18

-18

UNREG.+27

+18

+18

+18

+78VDC

-18

+5+18

1 OF 8 CHANNELS


-18

-18

DATAREMOTE

+5+5

+5

+18

ADJSYM

+18

+5V

+5V

+5V

+5V

+5V

DATA INPUT

51P710665VAC FROM

-18

VoVi

OUTPUTCH.1

CH.1

150K470K

751

XX4.7K

100V

10K47

100100

45604560

10K

10K

JUMP

9.76K

1M10U

33

33

XX

22

X

X

X

X

9316.34K18K

341843418434184

34184

220

22010K

10.0K

1K

2.7K

78L15

10K

5.1V

4125

4125

4123

100K

10K X 6JUMP

X

1N270

3.3K

.001U

ON SINK

18P18P8MHz

10M

4123

27K

4125

4148

1M .1U

27P

27P

19.6K

19.6K68

2K

2K

2K

18K

G

1K

100K

456034184

B10K

10.0K

10.0K

10.0K

1M10K

10K

27K

10P

LM393

4148

4148

.1U

.1U

300K

20K10K

40.2KJUMP

10.00KJUMP

1M

300K150K40.2K40.2K10.00K10.00K

10K

RED

330

51P7106

4148

4148

YEL

2.4K

2.4K

4123

414810K

1M

2K

971

100V.1U1/2AGC

4003

1.5U1.5U

1.5U

4003

4003

7805

GREEN

10K

754

LM393

47U

4.7K

1M

2150A

-18

+18

300K50K

100

100

27P

10.0K

10.0K

10.0K

10.0K

15.8K

10K X 3

10K

.1U10U

47UF6.8V10K

FEMALE XLR

4003

4003

4003

.1uF

10

TIP29C

4123

.00120K

100V

27V

100uF

4003's

68

4560

47U

-18

10K

13-14

3

2

1

111287654321109

D15 D14

D13D16

Printed in USA 5/96 VCX Rev 0


ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103Phone: (716) 872-0010 Fax: (716) 872-0739

Toll Free (800) 828-6308 Internet: http://www.ashly.com/ 1996 by Ashly Audio Corporation. All rights reserved worldwide.

VCX-80 Eight Channel VCA/Limiter RD-8/RW-8 Digital Remote...

Documents

Transcript of VCX-80 Eight Channel VCA/Limiter RD-8/RW-8 Digital Remote...