Crossover Adjustments - Soundstream Reference 414s Owner's Manual And Installation Manual

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CROSSOVER ADJUSTMENTS

The REFERENCE644s and REFERENCE414s amplifiers incorporate an on-
board staggered electronic crossover. They also have RCA outputs to drive an
external amplifier. No external electronic crossover is necessary. The high and
low pass portions of the crossover can be set independently of one another.
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
information in this region, the final response is very smooth and natural
sounding. The high pass filter is variable from 60 to 240 Hz at 12 dB/octave,
while the low pass filter is variable from 30 to 120 Hz at 24 dB/octave.
For initial crossover setup, try setting the low pass filter to approximately 60 Hz,
and the high pass filter(s) to approximately 100 Hz. Change the cro~swer
points to accommodate a good mixture of frequency response, power handling.
and personal preference.
is detived from ~
When the RCA sianal outout is
summed from Channels I, 2;
the REFERENCE644s also
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Soundstream's newA/RBASSTY feature can be added to the REFERENCE6445
level adjustment of the amplifier, while the low pass filter on the amplifier's
internal crossover is engaged. (AIRBASS TM does not control the level of the
RCA signal outputs.)
NOTE: The A/RBASSTM accessory ;s intended to be used only while
the REFERENCE amplifiers are diving a subwoofer( When the
Installing AiRBASS TM involves removing the bottom plate of the amplifier.
adding the AIRBASSTM circuit board, and flipping a switch. The switch is
labeled on the amplifier's main circuit board. DO NOT set the AIRBASSTM
switch to the "IN" position unless the AIRBASSTM module has been added. DO
NOT move the A/RBASSTM switch while the amplifier is "ON". Doing so
may damage your speakers. (Please refer to the AIRBASS"* owner's
installation manual for more details.)
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