Rockford Fosgate AudioPhile LP-1 Bedienungsanleitung



AUDIO

phile

LP-1 & LP-2 Low Pass Crossovers

2x-4 2-Way Crossover

Owner's Manual

Dear Customer,

Congratulations on your purchase of America’s finest

brandofCrossovers. AtRockfordFosgatewearecommit-

tedtomusicalreproductionatitsbest,andwearepleased

you chose our product. Through years of engineering

expertise, hand craftsmanship and critical testing proce-

dures we have created a wide range of products that

reproduce music with all the clarity and richness you

deserve.

For maximum performance we recommend you have

your new Rockford Fosgate product installed by an Au-

thorized Rockford Fosgate Dealer, as we provide special-

ized training through Rockford Technical Training Insti-

tute (RTTI). Please read your warranty and retain your

receipt and original carton for possible future use.

PRACTICE SAFE SOUND™

CONTINUOUSEXPOSURETOSOUNDPRESSURELEVELS

OVER 100dB MAY CAUSE PERMANENT HEARING LOSS.

HIGH POWERED AUTO SOUND SYSTEMS MAY PRODUCE

SOUNDPRESSURELEVELSWELLOVER130dB.USECOM-

MON SENSE AND PRACTICE SAFE SOUND.

Theserialnumbercanbefoundontheoutsideofthebox. Please

be sure to record it in the space provided below as your perma-

nentrecord. Thiswillbecomeusefulinrecoveringyourproduct

if ever stolen and serve as verification of your factory warranty.

Serial Number: _________________________________________

Model Number:___________________________________

Introduction

This manual provides information on the features, installa-

tion and operation of the Punch AUDIOphile Low Pass

Crossovers(LP-1andLP-2),and2-wayCrossover(2x-4). We

suggest you save this manual for future reference.

We strongly recommend you have your Authorized Rock-

ford Fosgate Dealer install the Crossovers. If you do choose

to install the crossover yourself, please be sure to read the

entire manual before beginning.

– 1 –

Design & Features

Punch Audiophile LP1 and LP2

The Punch AUDIOphile LP-1 and LP-2 passive, two channel,

low pass crossovers are designed to conform to the perfor-

manceandstandardsofthenewPunchAUDIOphilewoofers,

but will work with all Rockford Fosgate woofers. These low

pass filters are designed to meet the following criteria:

• Firstordernetwork(s),6dB/octaveat100Hzfor2Ω/4Ωloads

• Compactdesignwithscrewterminalsforinputandoutput

• 200 watt power handling

• Low DC resistance to minimize losses

• Two channel or single channel operation

– 2 –

Punch AUDIOphile 2x-4

The 2x-4 Crossover is designed to be the "link" between

tweeters, and mid-bass and mid-range speakers. This com-

pact2-waycrossoverisdesignedtoconformtothefollowing

criteria:

• 2-Way Crossover network centered at 4kHz

• Uses Linkwitz-Riley 2nd order transfer function (12dB/

octave)

• Additional tweeter filtering uses a series notch filter cen-

tered at 1500Hz to minimize the tweeter's resonant peak

• Also included is an impedance compensation network

(Zobel)that flattens outthe gradual impedancerise above

10kHz

• Tweeter protection provided through a special compres-

sion circuit

– 3 –

The compression circuit in the crossover consists of an

array of two lamps wired in parallel, whose function is to

monitor the input power to the tweeter. When it sees a

threatening increase in input voltage, it will increase its

resistance. This technique is fast, and virtually undetect-

able to the listener. Other manufacturers' tweeter protec-

tion is done via circuit breakers, which drastically reduce

tweeter output – very noticeable and distracting for the

listener.

• Smallsize,accomplishedbyinductorswoundonspecially

designed ferrite bobbins

Note: With the second order Linkwitz-Riley network of the

2x-4, an out-of-phase condition can exist in the pass band.

The best performance is usually achieved by placing the

tweeter out-of-polarity with the midrange/woofer. We rec-

ommend you start with it wired in this manner, listen,

– 4 –

– 5 –

reverse the polarity, and then listen again. Select the one

which offers the smoothest sounding frequency response.

See the wiring diagrams on pages 12 and 13 for more

information.

Mounting the Crossovers

TheLP-1,LP-2,and2x-4aresecuredtorelativelyflatsurfaces

withsheetmetalscrewsinsertedinto the mounting holeson

either side of the enclosure.

Input & Output Connectors

The LP-1, LP-2, and 2x-4 feature silver-plated “screw-lok”

terminalswhichareusedtosecureboththeinputandoutput

speaker wires. The LP-1 and LP-2 accept wire sizes up to 12

gauge.

Wiring the Crossovers

TheLP-1 and LP-2aredesigned to be wiredinseries with the

subwoofers being used. Both positive (+) and negative (-)

thruputconnectorsareprovided. Formoreinformation,refer

to the diagrams beginning on page 8.

Working with 2Ωand 4Ωwoofer loads and crossover fre-

quencies of 100Hz will set the inductor values for the LP-1

and LP-2 at 3.5 mH and 6.6 mH respectively.

To place the crossover in “mono mode,”

1. Placea jumperbetween theleft toright positiveoutputs.

2. Place another jumper between the left to right negative

outputs.

– 6 –

Oncethe jumpers are in place,mono filterinput and output

then become either the left positive (+) and negative (-), or

right positive (+) and negative (-) inputs.

The table below lists the various crossover options available

withtheLP-1andLP-2filters. Thefrequenciesindicatedhere

reflect real measurements and not calculations based on

inductor values.

Model Number 2

Ω

Load 4

Ω

Load 8

Ω

Load

LP-1 Stereo Mode 100 Hz 200 Hz 400 Hz

LP-1 Mono Mode 50 Hz 100 Hz 200 Hz

LP-2 Stereo Mode 50 Hz 100 Hz 200 Hz

LP-2 Mono Mode 25 Hz 50 Hz 100 Hz

– 7 –

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

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