1

RFP3408/3808

RFP3410/3810

RFP3412/3812

RFP3415/3815

Installation& Operation

Páginas de Referencia para la InstalaciónSchéma d’InstallationInstallations BeiblattIstruzioni di Installation

If, after reading your manual, you still have questions regarding this product, we recommend that you see your Rockford Fosgate dealer. If you need further assis-tance, you can call us direct at 1-800-669-9899. Be sure to have your serial num-ber, model number and date of purchase available when you call.The serial number can be found on the outside of the box. Please record it in thespace provided below as your permanent record. This will serve as verification ofyour factory warranty and may become useful in recovering your speaker if it is everstolen.

Serial Number: __________________________________

Model Number:__________________________________

– i –

Sections markedTROUBLESHOOTING

include recommendations forcuring installation problems

Sections markedINSTALLATION

include “slam dunk”wiring connections

Welcome to Rockford Fosgate! This manual is designed to provide informa-tion for the owner, salesperson and installer. For those of you who wantquick information on how to install this product, please turn to theInstallation Section of this manual or refer to the icons listed below. Otherinformation can be located by using the Table of Contents. We, at RockfordFosgate, have worked very hard to make sure all the information in thismanual is current. But, as we are constantly finding new ways to improveour product, this information is subject to change without notice.

GETTING STARTED

INSTALLATION

+ -+ -TROUBLE-S

HOOTING

Visit our website for the latest information on all Rockford products.

Dear Customer,

Congratulations on your purchase of the world's finest brand of car audiospeakers. At Rockford Fosgate we are fanatics about musical reproductionat its best, and we are pleased you chose our product. Through years of en-gineering expertise, hand craftsmanship and critical testing procedures, wehave created a wide range of products that reproduce music with all theclarity and richness you deserve.

For maximum performance we recommend you have your new RockfordFosgate product installed by an Authorized Rockford Fosgate Dealer, as weprovide specialized training through Rockford Technical Training Institute(RTTI). Please read your warranty and retain your receipt and original car-ton for possible future use.

Great product and competent installations are only a piece of the puzzlewhen it comes to your system. Make sure that your installer is using 100%authentic installation accessories from Connecting Punch in your installa-tion. Connecting Punch has everything from RCA cables and speaker wireto Power line and battery connectors. Insist on it! After all, your new systemdeserves nothing but the best.

To add the finishing touch to your new Rockford Fosgate image order yourRockford wearables, which include everything from T-shirts and jackets tohats and sunglasses.

To get a free brochure on Rockford Fosgate products and Rockford wear-ables, in the U.S. call 480-967-3565 or FAX 480-967-8132. For all othercountries, call +001-480-967-3565 or FAX +001-480-967-8132.

PRACTICE SAFE SOUND™

CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER 100dB MAY

CAUSE PERMANENT HEARING LOSS. HIGH POWERED AUTOSOUND SYSTEMS

MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER 130dB. USE COMMON

SENSE AND PRACTICE SAFE SOUND.

– ii –

iii

Spec

ifica

tion

sR

FP

3408

RF

P38

08R

FP

3410

RF

P38

10R

FP

3412

RF

P38

12R

FP

3415

RF

P38

15F

s (H

z)41

4032

3428

2924

23R

e (O

hm

s)3.

887.

733.

737.

423.

697.

373.

697.

46L

e (m

H)

3.63

6.14

4.42

7.38

4.48

7.48

4.64

7.53

Qts

0.47

80.

529

0.44

70.

507

0.47

20.

533

0.53

70.

554

Qes

0.51

70.

588

0.48

10.

554

0.51

00.

584

0.58

10.

608

Qm

s6.

234

5.27

36.

255

5.91

96.

237

6.08

57.

215

6.19

0V

as (

Lit

ers)

14.0

15.4

31.5

31.1

86.4

86.3

199.

224

4.3

Vas

(cu

ft)

0.49

0.54

1.11

1.10

3.05

3.05

7.04

8.63

SP

L (

db

M/W

)84

.984

.485

.485

.787

.687

.689

.189

.1X

MA

X (

in)

0.31

0.31

0.51

0.51

0.51

0.51

0.51

0.51

XM

AX

(m

m)

88

1313

1313

1313

Po

wer

han

dlin

g (

RM

S)

200

200

200

200

200

200

200

200

Po

wer

han

dlin

g (

Pea

k)40

040

040

040

040

040

040

040

0S

pea

ker

dis

pla

cem

ent

0.03

50.

035

0.06

0.06

0.08

50.

085

0.13

50.

135

Sea

led

Bo

x (c

u. f

t.)

0.3

0.3

0.75

0.75

1.25

1.25

2.5

2.5

Po

rted

bo

x (c

u. f

t.)

0.62

50.

625

11

22

2.5

2.5

Mo

un

tin

g d

iam

eter

(in

)7-

1/16

7-1/

169-

5/16

9-5/

1611

-1/8

11-1

/813

-7/8

13-7

/8M

ou

nti

ng

dia

met

er (

mm

)17

917

923

723

728

328

335

235

2M

ou

nti

ng

dep

th (

in.)

3-13

/16

3-13

/16

5-3/

85-

3/8

5-13

/16

5-13

/16

7-3/

167-

3/16

Mo

un

tin

g d

epth

(m

m)

9797

137

137

148

148

183

183

1

Table of Contents

Specifications........................................................................................................iiiIntroduction ..........................................................................................................2RF Punch HE Woofer Contents ..............................................................................2Recommended Enclosures ....................................................................................2Installation ............................................................................................................4

Recommended Enclosures ..............................................................................4Building An Enclosure ....................................................................................6Calculating Volume ........................................................................................6Subwoofer Crossovers......................................................................................6Wiring Configurations......................................................................................7

Warranty Information ............................................................................................8International Information ......................................................................................9

2

Introduction

The RF Punch HE Woofers are a full line of low frequency drivers sizedfrom 8" to 15" and are available in 4 or 8 ohm impedance. The RF PunchHE woofers were designed for use primarily in small, sealed or portedenclosures. By utilizing the latest materials and construction techniques,we are able to offer a speaker with high output at low frequencies whilerequiring a minimum of operating space.

RF Punch Woofer Contents

RF Punch HE WooferInstallation & Owner's Manual

Recommended Enclosures

This manual outlines 2 specific types of enclosures that provide distinctlydifferent performance. This section is to help you decide which type is bestfor your application.

Sealed

Sealed enclosures are the simplest to build. The most important part ofbuilding a sealed enclosure is to make sure that the enclosure is airtight.Using glue and some type of sealant on all seams will ensure solid con-struction and prevent air leaks. The box volume will directly impact theperformance of the speaker. Larger enclosure will provide flatter responseand deeper bass where smaller boxes will provide a bump in the responsecurve and generally higher output for greater SPL.

Advantages of sealed enclosures•Small enclosures•Linear (Flat) response•No port noise•High power handling at all frequencies•Excellent for sound quality

INSTALLATION

+ -+ -

3

Recommended Enclosures

Vented Enclosures:Vented enclosures vary only from the sealed enclosures in that a vent orport is added to “tune” the enclosure. The enclosures recommended aredesigned for great overall performance. Larger boxes tend to be easy totune to lower frequencies while medium and small boxes are easier to tuneto higher frequencies. The vented design is less linear in response than thesealed box with noticeably more output at the tuning frequency.

Advantages of vented enclosures•Higher average output than sealed•Tuning frequency can be easily adjusted by changing port length•Deep bass response with lower power requirements•Great for high output with limited power

INSTALLATION

+ -+ -

4

Recommended EnclosuresPunch 8"

Recommended Sealed .30ft3 (8.50L)

D = 8"(20.32cm)

H =

11"

(27.

94cm

)

W = 11"(27.94cm)

Punch 10"Recommended Sealed .75ft3 (21.24L)

D = 10"(25.40cm)

H =

14"

(35.

56cm

)

W = 15"(38.10cm)

Punch 12"Recommended Sealed 1.25ft3 (35.40L)

D = 12"(30.48cm)

H =

14"

(35.

56cm

)

W = 19-3/4"(50.17cm)

D = 8"(20.32cm)

H =

11"

(27.

94cm

)

W = 19.75"(50.16cm)

Range in Cubic Feet

1 2 3 4 5 6

.50

.6250.

3

D = 13.5"(34.29cm)

H =

13"

(33.

02cm

)

W = 15"(38.1cm)

Range in Cubic Feet

1 2 3 4 5 60.3

.75

D = 14"(35.56cm)

H =

18"

(45.

72cm

)

W = 20.5"(52.07cm)

Range in Cubic Feet

1 2 3 4 5 6

0.3

1.50

Range in Cubic Feet

1 2 3 4 5 60.3

.50

1.50

Range in Cubic Feet

1 2 3 4 5 60.3

.625

1.50.7

5

Range in Cubic Feet

1 2 3 4 5 60.3

1.25

1.75

Recommended Ported .625ft3 (17.70L)

Recommended Ported 1.0 ft3

(28.32L)

Recommended Ported 2.0 ft3 (56.63L)

Fb = 40 HzPd = 2.5" (6.35cm)Pl = 11.25" (28.57cm)

Fb = 35 HzPd = 3" (7.62cm)Pl = 13.25" (33.65cm)

Fb=35 HzPd=4" (10.16cm)Pl=10.75" (27.30cm)

Installation INSTALLATION

+ -+ -

5

Punch 15"

Recommended Sealed 2.5ft3 (70.79L)

D = 12"(30.48cm)

H =

20"

(50.

80cm

)

W = 25"(63.50cm)

Range in Cubic Feet

1 2 3 4 5 60.3

1.75

2.50

D = 12"(44.45cm)

H =

20"

(43.

18cm

)

W = 25"(48.26cm)

Range in Cubic Feet

1 2 3 4 5 60.3 75 50

Recommended Enclosures

Recommended Ported 2.5ft3 (70.79L)

Fb = 35 HzPd = 4" (10.16cm)Pl = 8" (20.32cm)

Recommended Enclosures INSTALLATION

+ -+ -

6

Building an EnclosureTo work properly, the walls of the enclosure must be rigid and not flexwhen subjected to the high pressures generated by the speaker's operation.For optimum performance, we recommend using 3/4" MDF (MediumDensity Fiberboard) and internal bracing. The enclosure should be gluedtogether and secured with nails or screws. MDF is porous; therefore, it issuggested to also seal the outside walls with polyurethane.

Calculating VolumeCalculating volume is merely a matter of measuring the dimensions ininches and using the formula:

1728"/(cu in/cu ft)Height” x Width” x Depth”Box Volume=

(cubic feet)

If two facing sides are of uneven length, add them together and divide bytwo to take the average. Using this number will give you the volume with-out the necessity of calculating the box in sections and adding the sectionstogether. The thickness of the baffle material reduces the internal volumeso this must be subtracted from the outside dimensions to determine theinternal volume. The speaker itself also reduces the internal volume. Theamount of air displaced by each model is listed on the specification sheetand should also be subtracted from the gross volume calculation.

Subwoofer CrossoversThere are two operational types of crossovers, passive and active. Passivecrossovers (coils or inductors) are placed on the speaker leads between theamplifier and speaker. An active crossover is an electronic filter which sep-arates the audio signal fed to different amplifiers. For optimum subwooferperformance, we recommend using an active 80-100Hz low-passcrossover at 12dB/octave.

7

Wiring Configurations

Three configurations for connecting speakers to an amplifier are Series,Parallel, and Series-Parallel wiring. A Series configuration consists of twoor more speakers wired in an string (end to end). A Parallel configurationconsists of two or more speakers wired with the common terminals con-nected across each other. A Series-Parallel configuration is a combinationof both methods. Determine which method will be compatible with youramplifier.

1 1 1 1 1= + + + + etc.

RT R1 R2 R3 R4

Series Wiring Parallel Wiring

+ –+ – + –

+ –4Ω

+ –+ –

• RT indicates the total speaker load

• R1, R2, etc. indicates each speaker in the system

Series-Parallel Wiring

INSTALLATION

+ -+ -

RT= R1+ R2+ R3+ R4

4Ω load 4Ω load

+ – + –

+ –8Ω load

8Ω load 8Ω load

+ – + –

+ –4Ω load

8

Limited Warranty InformationRockford Corporation offers a limited warranty on Rockford Fosgate products on the following terms:

• Length of Warranty

1 year on speakers 30 days on speaker B-stock (receipt required)3 years on electronics 90 days on electronic B-stock (receipt required)2 years on source units

• What is Covered

This warranty applies only to Rockford Fosgate products sold to consumers by Authorized Rockford

Fosgate Dealers in the United States of America or its possessions. Product purchased by consumers

from an Authorized Rockford Fosgate Dealer in another country are covered only by that country’s

Distributor and not by Rockford Corporation.

• Who is Covered

This warranty covers only the original purchaser of Rockford product purchased from an Authorized

Rockford Fosgate Dealer in the United States. In order to receive service, the purchaser must provide

Rockford with a copy of the receipt stating the customer name, dealer name, product purchased and

date of purchase.

• Products found to be defective during the warranty period will be repaired or replaced (with a prod-

uct deemed to be equivalent) at Rockford's discretion.

• What is Not Covered

1. Damage caused by accident, abuse, improper operations, water, theft

2. Any cost or expense related to the removal or reinstallation of product

3. Service performed by anyone other than Rockford or an Authorized Rockford Fosgate Service Center

4. Any product which has had the serial number defaced, altered, or removed

5. Subsequent damage to other components

6. Any product purchased outside the U.S.

7. Any product not purchased from an Authorized Rockford Fosgate Dealer

• Limit on Implied Warranties

Any implied warranties including warranties of fitness for use and merchantability are limited in dura-

tion to the period of the express warranty set forth above. Some states do not allow limitations on the

length of an implied warranty, so this limitation may not apply. No person is authorized to assume for

Rockford Fosgate any other liability in connection with the sale of the product.

• How to Obtain Service

Please call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return

Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of

product to Rockford.

Ship to: SpeakersRockford Acoustic Design (Receiving-speakers)609 Myrtle N.W.Grand Rapids, MI 49504RA#:_________________

Ship to: ElectronicsRockford CorporationWarranty Repair Department2055 E. 5th StreetTempe, AZ 85281RA#:_________________

9

LEA DETENIDAMENTE LAS SIGUIENTES INSTRUCCIONES DE INSTA-LACÍON DEL PRODUCTO.

Los terminales positivo y negativo de entrada están ubicados uno en cadaextremo de la carcasa. Este montaje separado previene de posibles corto-circuitos de la señal a altos niveles de volumen. El terminal positivo estámarcado con un punto en la carcasa. Un punto rojo indica que la imped-ancia del altavoz es de 8 ohmios, y un punto violeta que es de 4 ohmios.

IntroduccíonLos woofers RF Punch HE son una gama completa de drivers de baja fre-cuéncia que comprenden diámetros de 8" a 15". Los Woofers RF Punch HEfueron diseñados para su utilización en caja cerrada o bass-reflex mediana.Diseñada para ofrecer la máxima calidad, los Woofers RF ofrecen al entu-siasta principiante en sistemas de car audio, la oportunidad para disfrutarde un bajo sólido en las bajas frecuéncias. Nuestros ingenieros han selec-cionado materiales y técnicas para la construcción de nuestros altavocescon el objetivo de ofrecer características y confianza comparable a otrosaltavoces vendidos much más caros.

Terminales De Entrada

ESPAÑOL

Calculo Del VolumenPara calcular el volumen sólo se han de medir las dimensiones en cen-timetros y aplicar la fórmula:

Volumen du la caja =

Si dos caras opuestas son de diferente tamaño, súmelas y divida el total pordos para obtener el promedio. Usando esta técnica se ahorrara el cálculopor secciones. El espesor del material con que está construida la cajareduce el volumen interno, de manera quer ha de restarse de las dimen-siones exteriores para determinar el volumen interior. La cantidad de aireque ocupa cada modelo viene especificado en la hoja de caracteristicas ytambién debe sustraerse para obtener el volumen neto interior.

1000cc3/litros

Alto (cm) x Ancho (cm) x Profundidad (cm)

(en litros)

10

Para un buen funcionamiento las paredes del recinto han de ser rigidas ysin flexión a altas presiones de aire. Recomendamos usar un espesor de 1.9cm de conglomerado de alta densidad o fibra de media densidad. Si elrecinto es muy grande es necessario reforzarlo internamente. Las juntasdeben ser encoladas y aseguradas con tornillos o grapas. Internamente lasjuntas deben ser selladas con silicona para prevenir las fugas de aire. Lacola para madera es la mejor opción. Debido a la porosidad del conglom-erado de alta densidad y la fibra es recomendable sellar exteriormente lacaja con poliuretano.

Construccion De Un RecintoESPAÑOL

11

VEUILLEZ LIRE LES INSTRUCTIONS SUIVANTES POUR L'INSTALLA-TION DE CE PRODUIT.

Les bornes positives et négatives sont fixées de part et d'autre du saladier.Cette séparation permet d'empêcher les courts-circuits entre les fils lors desreproductions sonores élevées. La borne positive est repérée par un petitpoint de couleur sur le saladier. Un point rouge est utilisé pour les haut-parleurs de 8Ω, un point violet pour les haut-parleurs de 4Ω.

IntroductionLes woofers RF Punch HE sont une gamme complète de haut-parleurs degraves allant de 20 à 46 cm et disponibles en 4Ω ou 8Ω. Les woofer RFPunch HE ont été conçus pour être utilisé de préférence en enceintes clos-es.

En utilisant les techniques et les matériaux de construction les plus récents,nous sommes parvenus à construire un haut-parleur fournissant un rende-ment élevé dans les graves tout en requérant un volume opérationnel min-imum.

BORNIERS

FRANÇAIS

Calcul Du VolumeOn calcule le volume en mesurant la dimension de chaque côté et en util-isant la formule suivante:

Volume du caisson =

(Litres)

Si les due côtés qui se font face n'ont pas la même longueur, additionnezles et divisez le résultat par deux pour obtenir la moyenne des deuxlongueurs. Utilisez le nombre ainsi obtenu dans la formule pour détermin-er le litrage. Cette méthode permet d'obtenir le volume du caisson sansdevoir faire de calculs compliqués de section de volume. L'épaisseur dumatériau dont est fait le caisson réduit le volume interne de celui-ci.Lorsqu'on mesure les côtés du caisson il ne faut donc pas oublier d'oter desmesures l'epaisseur du matériau. Le haut-parleur lui-même diminue le vol-ume interne du caisson. Le volume d'air déplacé par chaque modèle dehaut-parleur est repris dans les spécifications techniques et doit égalementêtre soustrait du volume total.

1000cc3/litresHauteur (cm) x Longueur (cm) x Largeur(cm)

12

Pour fonctionner convenablement les parois du caisson doivent être rigideslorsqu'elles sont soumises aux hautes pressions dues au fonctionnement duhaut-parleur. Nous vous recommandons d'utiliser des panneaux de boisaggloméré à haute ou moyenne densité de particules de type “MDF”. Cespanneaux sont disponibles dans la plupart des magasins de bricolage. Pourun caisson de grand volume il est recommandé de placer des renforts à l'in-térieur du caisson. Les différents côtés devront être collés (colle à bois) etvissés (ou éventuellement cloués). Il est recommandé de mettre un joint desilicone dans les arêtes internes du caisson afin d'éviter les fuites d'air. Dufait de la porosité des matériaux que nous vous conseillons il est préférablede recouvrir l'extérieur du caisson avec du polyuréthane.

Construire Un CaissonFRANÇAIS

13

Anschlubterminals

BITTE LESEN SIE DIESE GEBRAUCHSANLEITUNG ZUERST SORGFÄLTIGDURCH. DAS KANN SIE VOR FALSCHEM EINSATZ, AUSFALLEN ODERSOGAR BESCHÄDIGUNG DES PRODUKTES ODER IHRES FAHRZEUGESSCHÜTZEN.

EinleitungDie RF-Punch HE Woofer sind eine komplette Produktlinie von Tief-Frequenzlautsprechern mit Durchmesser von 20 cm bis zu 46 cm,erhältlich in der Impendanz 4 - und 8 Ohm (Die RF Punch HE Woofer wur-den vorwiegend fur den Einsatz in geschlossenen Gehäuse konstruiert).Durch die Verwendung neuester Materialien und Produktionstechnikenkönnen wir Ihnen heute einen Lautsprecher vorstellen, der hoheLautstärken und tiefe Frequenzen selbst in sehr kleinen Volumen repro-duzieren kann.

Die Anschluβterminals wurden auf jeder Seite des Lautsprecherkorbes posi-tioniert um eventuelle Kurzschlüsse auch bei hoher Leistungauszuschlieβen (Das Positiv-Terminal ist durch eine Farbmarkierung geken-zeichnet). Eine rote Farbamrkierung befindet sich immer bei einemLautsprecher mit einer Impedanz von 8 Ohm, eine violette Farbmarkierungzeichnet die Lautsprecher mit der Impedanz 4 Ohm.

DEUTSCH

Volumen-Berechnung

Sollten zwei gegenüberliegende Seiten ungleich lang sein, so können siedie Maβe zusammen rechnen und durch zwei dividieren um denDurchschnitt zu erhalten. Dies macht Ihnen die Berechnung leichter undSie müssen das Gehäuse nicht in Sektionen berechnen, die Sie danachwieder mühselig zusammen zählen müssen. Die Materialstärke beeinfluβtnatürlich auch das Innen-Volumen, so muss für eine präzise Berechnungdie Materialstärke von Auβen-Volumen abgezogen werden. DerLautsprecher verringert ebenfalls das Innen-Volumen, auch er sollte natür-lich heraus gerechnet werden. Jedes Lautsprecher-Volumen ist unter“Specifications” genau aufgelistet.

Gehäuse-Volumen =

1000cc3/Kubik liter

Höhe (cm) x Breite (cm) x Tiefe (cm)

(Kubik Liter)

Zur Volumen-Berechung benötigen sie die genauen Maβe undDimensionen in Zentimetern.

14

Um das Gehäuse so präzise wie möglich zu bauen, sollten dieGehäusewände sehr steif und luftundurchlässig sein, um dem entsehendenLuftdruck des Lautsprechers standhalten zu können. Wir empfehlen 1,9 cmmittelverdichtete Faserplatte (MDF), die in den meisten Baumärkten ange-boten wird. Bei einem gröβeren Gehäuse sollten Sie Versteifungen durchHolzbalken montieren. Diese sollten – wie auch das gesamte Gehäuse –mit Holzleim geklebt und verschraubt oder vernagelt sein. Um eine höhereDichte zu erreichen, empfiehlt es sich, die Kanten und Verschraubungenmit Silikon abzudichten und das Gehäuse von innen mit einerHohlraumversiegelung zu behandeln.

Der Gehäuse Bau

DEUTSCH

15

LEGGERE CON ATTENZIONE LE SEGUENTI ISTRUZIONI PRIMA DEL-L'INSTALLAZIONE DEL PRODOTTO.

I connettori di ingresso positivi e negativi sono montati sul cestello inposizioni speculari. Il montaggio separato impedisce al segnale musicale dicortocircuitarsi ad altissimi livelli di volume. (Il terminale di ingresso é indi-cato da una marcatura colorata sul cestello.) Un contrassengno rosso indi-ca che l'impedenza dell'altoparlante é 8 ohm, il contrassegno viola é imp-iegato per i 4 ohm.

IntroduzioneI woofer RF Punch HE sono una linea completa di altoparlanti per basse fre-quenze con diametri che vanno da 20 a 46 cm e disponibili sia a 4 che a8 ohm. (I woofer RF Punch HE sono progettati per il funzionamento princi-pale in cassa chiusa.). Impiegando le piú aggiomate tecnologie e materiali,siamo in grado di offrire altoparlanti che possono riprodurre un'elevatapressione sonora alle basse frequenze mantenendo i volumi di impiegoassolutamente ridotti.

CONNESSIONI DI INGRESSO

ITALIANO

Calcolo del VolumeCalcolare il volume é essenzialmente solo un problema di misurazionedelle dimensioni in centimetri della cassa e di applicazione della formula:

Volume dellacassa =

(litri) 1000cc3/litri

Alteza (cm) x Larghezza (cm) x Profonditá (cm)

Se due pareti parallele sono di dimensioni diverse (prisma), semplicementesommatele e dividete il risulto per due. Impiegando il risultato ottenutopotete calcolare il volume senza dividere la cassa i sezioni. Lo spessore dellegno riduce il volume interno, per cui é necessario sottrario dalle dimen-sioni esterne. Anche il volume dell'altoparlante stesso riduce il volumedella cassa e deve essere sottratto. Il volume che ciascun altoparlante con-tribuisce a togliere dalla cassa é indicato nelle tabelle con le specifiche.

16

Per ottenere le prestazioni massime, le pareti della cassa devono essererigide e non flettere sotto la sollecitaxione della elevata pressione generatadal woofer. Noi raccomandiamo l'impiego di MDF con uno spessore min-imo di 19 mm, materiale facilmente reperibile in tutte le falegnamerle. Percasse di dimensioni molto grandi é indispensabile prevedere dei rinforziinterni. Le giunture devono essere incollate e fissate con viti o chiodi inabbondanza. Intermanmente le giunture devono essere siliconate perimpedire trafilati d'aria. Anche la colla da legno funziona bene. Essendo ilMDF un materiale poroso si consiglia di sigillare l'esterno con materialipoliuretanici.

Costruire Una CassaITALIANO

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Notes

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Notes

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Notes

11/00 M.J.T.LIT11035

Installation assistance available at:

http://www.rockfordfosgate.com/rftech

Rockford Corporation546 South Rockford Drive

Tempe, Arizona 85281 U.S.A.In U.S.A., (480) 967-3565

In Europe, Fax (49) 8503-934014In Japan, Fax (81) 559-79-1265

www.rockfordfosgate.com

MADE IN THE USAThis product is designed, developed and assembled in the USAby a dedicated group of American workers. The majority of thecomponents used in the construction of this product are pro-

duced by American companies. However, due to the globalnature of their manufacturing facilities and the loud-speaker parts industry in general, some parts may be

manufactured in other countries.