CRUNCH SA-1100.4 Smash Series 1100W 4-Channel Class AB Amplifier Installation Guide
- June 5, 2024
- CRUNCH
Table of Contents
CRUNCH SA-1100.4 Smash Series 1100W 4-Channel Class AB
Amplifier
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.
Power / Ground cable size
It is critical to use the proper power and ground cable. Select the size
listed here for your amplifier model. Always use high-quality copper cable.
Cable size recommendations for multi-amp systems are available on our website.
Installation
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Disconnect the negative battery terminal
Place the terminal in a secure position so that it won’t accidentally contact the negative battery post -
Run Cables
Properly route power, speaker and RCA cables through the vehicle. -
Mount Amplifier
Choose a mounting location that will provide adequate air ventilation. Mount the amplifier to a secure surface. Do not mount the amplifier upside down. -
Chassis Ground
The chassis ground connection is critical to the performance of the amplifier. Choose a location that is close to the amplifier. Completely scrape away the paint and use a nut and bolt if possible.
DO NOT USE AN EXISTING FACTORY BOLT! -
Power Connections
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.
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Signal Input Low Level RCA
Connect the RCA cables to the INPUT connectors. The OUTPUT can be used to provide input for a second amplifier. -
Signal Input High Level
The HI INPUT is for use with source units that do not offer RCA outputs. Use the supplied harness to connect to the source unit’s speaker output.
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Level Control
Turn the LEVEL control completely counter-clockwise to a minimum. -
Speaker Connections
Using spade terminals, connect the speaker cables to the speaker output connectors.
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Positive Battery Connection
Connect the power cable the positive battery terminal. power cable must battery terminal.
-
Re-connect Negative Battery Terminal
Re-connect the negative battery terminal making sure it is securely tightened.
Setup
Input Mode
The input MODE switch will “sum” or combine the right and left channel signals in the MONO position to improve bass performance. Select MONO only when the amp is being used for subwoofers.
Xover Mode
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.
High pass Adjustment
The HPF (high pass filter) 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.
Low pass Adjustment
The LPF (low pass filter) control will limit output above the selected frequency. This is used to allow a smooth transition to the higher frequency speakers.
Bass Boost
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.
Remote Level Control
Some models include a bass remote. Avoid adjusting the bass remote while
operating vehicle.
Level Setting
This is a critical step to insure your amplifier is properly adjusted to match
the signal output level of your source unit.
THIS IS NOT A VOLUME CONTROL!
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If possible, with the source unit off, confirm that the primary volume control is turned down (counterclockwise).
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Turn on the source unit (CD, or MP3 player). Re-confirm 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 amplifier is illuminated. -
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.
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Stop increasing the source unit volume when you reach 3/4 (about 75%) or until you hear speakers begin to slightly start producing distortion.
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Increase the amplifier level (clockwise) until the distortion is heard, then back the level down (counterclockwise) until the distortion is eliminated. Small adjustments may need to be made to balance the levels of multiple amplifiers.
Common System Setup
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
WARRANTY
Maxxsonics USA Inc. 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 USA Inc. 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 USA Inc. 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 Maxxsonics USA Inc. This warranty is limited to defective parts and specifically excludes any incidental or consequential damages connected therewith. To view the full warranty, please visit the website.