Crunch DR-3725.1D Manual

Crunch Modtager DR-3725.1D

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Side 1/3

Place terminal in a secure

position so that it won’t

accidentally contact the

negative battery post

Power / Ground

cable size

It is critical to use the proper

power and ground cable. Select

the size listed here for your

amplier model. Always use high

quality copper cable.

Cable size recommendations for

multi amp systems are available

on our website.

Properly route power,

speaker and RCA cables

through the vehicle.

Choose a mounting location

that will provide adequate air

ventilation. Mount the amplier to

a secure surface. Do not mount

the amplier upside down.

Using spade terminals, connect the

+12V to the power cable from the

battery, the REM to the source unit

turn-on wire and the GND to the

chassis ground..

Bare metal

Connect the RCA cables to

the INPUT connectors. The

OUTPUT can be used to

provide input for a second

amplier.

Connect the power cable to the

positive battery terminal. The

power cable must be fused

within 18 inches of the battery

terminal.

Re-connect the negative

battery terminal making sure it

is securely tightened.

The chassis ground connection is

critical to the performance of the

amplier. Choose a location that is

close to the amplier. Completely

scrape away the paint and use a nut

and bolt if possible.

DO NOT USE AN EXISTING

FACTORY BOLT!

Disconnect

negative battery

terminal

Run Cables

Mount Amplier

Power

Connections

Signal Input

Low Level RCA

Positive Battery

Connection

Re-connect

Negative Battery

Terminal

Chassis Ground

Be prepared to disarm your vehicle’s alarm and

to enter your radio / source unit code.

Installation

Before you start

CAUTION

Many new and factory radios require a reset code when

disconnected from battery power. This is an anti-theft

feature. Before unplugging power, you must determine if

your radio/source unit requires a reset code. Check the

operation manual for your vehicle or contact the dealer.

Turn the LEVEL control completely

counter-clockwise to minimum.

Level Control

4ga

Model Fuse Size Cable Size

External 60A

External 80A

External 100A

External 150A

External 100A

External 125A

External 60A

External 80A

Common System Setup

4ch - Full Range

4ch - Mixed Mono

Mono

2ch

DR-1325.1

DR-2125.1D

DR-2725.1D

DR-3725.1D

DR-2125.2D

DR-3125.2D

DR-1325.4D

DR-2525.4D

CR-U-01

Crunch products are designed and engineered in the USA by

Setup

The XOVER Mode switch sets the type

of crossover that will be active. 4 channel

models will have two switches, one for each

set of channels.

The HPF (high pass lter) control will limit the

output below the selected frequency. This is

typically used to protect midrange and high

frequency speakers from damage and to

allow a smooth transition from a subwoofer.

The LPF (low pass lter) control will limit

output above the selected frequency. This

is used to allow a smooth transition to the

higher frequency speakers.

1. If possible, with the source unit off, conrm that the primary volume control is

turned down (counter clockwise).

2. Turn on the source unit (CD, or MP3 player). Re-conrm that the volume is

turned down. Make sure the source unit controls; balance, fader, bass and

treble are all set to center or “0” adjustment. Make sure that the green LED on

the end of the amplier is illuminated.

3. Play a clean musical selection of which you are very familiar. CD is preferred.

Do not use radio signals for level setting. Hit play and start turning the volume

of the source unit up.

4. Stop increasing the source unit volume when you reach 3/4 (about 75%) or until

you hear speakers begin to slightly start producing distortion.

5. Increase the amplier level (clockwise) until distortion is heard, then back

the level down (counter clockwise) until the distortion is eliminated. Small

adjustments may need to be made to balance the levels of multiple ampliers.

The BASS BOOST or BASS EQ control

will increase the output at 45Hz for more

pronounced bass. Exercise caution.

Increase the level in small amounts until

distortion is noticed, then back off a little.

Some models include a bass

remote. Avoid adjusting the bass

remote while operating vehicle.

Xover Mode

High pass

Adjustment

Low pass

Adjustment

Bass Boost

Remote Level

Control

This is a critical step to insure your amplier

is properly adjusted to match the signal

output level of your source unit.

THIS IS NOT A VOLUME CONTROL!

This is a step to control the illuminated on the

front of the amplier.

3-MODES: VU Meter mode, All red LED mode,

and logo illumination off.

Level Setting

Logo

Illumination

WARRANTY

Maxxsonics, LLC. warrants this product, to the original consumer purchaser, to be free from

defects in material and workmanship for a period of one (1) year from the date of purchase.

Maxxsonics, LLC. will, at it’s discretion, repair or replace defective products during the warranty

period. Components that prove to be defective in materials and workmanship under proper

installation and use must be returned to the original authorized Maxxsonics, LLC. retailer from

where it was purchased. A photocopy of the original receipt must accompany the product being

returned. The costs associated with removal, re-installation and freight are not the responsibility of

MMaxxsonics, LLC. This warranty is limited to defective parts and specically excludes any incidental

or consequential damages connected therewith. To view the full warranty, please visit the website.

The information contained within this document is intended to offer some basic guidelines

for a few of the most common installations. More complex audio systems should be

installed by a competent professional. Additional installation information available at

www.maxxsonics.com

CR DR QSG 01 - rev1

Quick Start

Installation Guide

Congratulations on your choice of an Autotek amplier.

This “Quick Start Installation” guide is meant to help you

“hook up” and play music. For more detailed information,

on system setting, speaker and subwoofer conguration

and full specications by model visit the website,

http://crunchcaraudio.com/manuals.html

DR-1325.1

DR-2125.1D

DR-2725.1D

DR-3725.1D

DR-2125.2D

DR-3125. 2D

DR-1325.4D

DR-2525.4D

-4dB

0dB

(RED)

(ORANGE)

(GREEN)

-8dB

THIS IS NOT A REPLACEMENT FOR AN

OSCILLOSCOPE - PLEASE USE PROPER

TOOLS WHEN SETTING GAIN!

Please visit crunchcaraudio.com for more on this setup

Produkt Specifikationer

Mærke:	Crunch
Kategori:	Modtager
Model:	DR-3725.1D

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