Crossover Adjustments; Airbass - Soundstream Reference 705s Owner's Manual And Installation Manual

5/3 channel power amplifier

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Table of Contents

In most car audio installations, there is a tendency for a "midbass boom." Because of their interior

dimensions, most cars will resonate or ring at these midbass frequencies. If we design the system so

there is less musical information in this region, the final response is very smooth and natural sounding.

The Reference705s incorporates a continuously variable staggered asymmetrical electronic crossover.

The high and low pass portions of the crossover can be adjusted independently of one another.

Follow the procedure below to adjust the crossover.

24 dB/Oct. Low Pass

1. With the crossover activated, set the frequency adjustments to the 12 o'clock position.

2. While listening to music, adjust the high pass frequency control. Select a frequency high

enough to prevent damage to the speakers, yet low enough that you are able to retain

midbass in the front speakers.

3. Adjust the low pass frequency control in the same way as the high pass. This time, listen

to the bass. You should find a setting that will give you a solid sound with minimum "boom"

from resonating frequencies.

NOTE: You may find it necessary to readjust the crossover after listening to the system. The correct

settings are a combination of the capabilities of the equipment and your listening preferences.

Soundstream's new AIRBASS™ feature can be added to the REFERENCE705s amplifier.

feature allows wireless RF remote control level adjustment of the REFERENCE705s' subwoofer

NOTE: The AIRBASS™ accessory operates the subwoofer channel only.

AIRBASS™ does not control the level of channels 1,2,3 & 4.

Installing AIRBASS™ involves removing the bottom plate of the amplifier, adding the AIRBASS™

circuit board, and flipping a switch. The switch is labeled on the amplifier's main circuit board. DO

NOT set the AIRBASS™ switch to the "IN" position unless the AIRBASS™ module has been added.

DO NOT move the AIRBASS™ switch while the amplifier is "ON". Doing so may damage your

speakers. (Please refer to the AIRBASS™ owner's / installation manual for more details.)

INSTALLATION STEP 8