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ELECTRIC BASS AND ACOUSTIC BASS EXPLAINED
The SRx1 amplifi er was created for maximum acoustic enhancement and enjoyment of
low range frequencies, allowing the best match between this amplifi er and the chosen
subwoofer system.
For this reason, the SRx1 is designed with two groups of separate speaker outputs
labelled: Electric Bass and Acoustic Bass. Each group includes two pairs of terminals.
Because of the unique circuit topology of this amplifi er, it is required that only a four-
ohm load be connected to each terminal for a total load of two-ohms. For example, if
you are using a dual four-ohm voice coil subwoofer, each coil should be connected
to a separate terminal. No matter what confi guration of subwoofers you use, each
terminal must be connected to a four-ohm load or no load. Please see further wiring
confi gurations in the owners manual.
WARNING: Do not use both Electric Bass and Acoustic Bass outputs at the same time.
You must choose only one output: Electric Bass or Acoustic Bass.
The two different modes are distinguished by the different characterization of the bass
timbre; however, this is not accomplished through fi ltered equalization of the sound, but
through the variation of the fi nal output stage characteristics.
Some electric parameters also vary, the most important being the damping factor,
which determines the ability of the amplifi er to control the subwoofer.
The choice of which output group you should use, strongly depends on the listener’s
tastes and the subwoofer system being used.
If you use this amplifi er to drive full range loudspeakers, for instance in a Dual Mono
confi guration, you have a choice of the bass timbre according to the output terminals
you use.
Following is a technical description of the output choices.
ELECTRIC BASS Output: Damping Factor 300
A precise, deep and stable bass, without any specifi c coloration, acoustically
characterizes this output. This setting is best for under damped loudspeaker/enclosure
systems (Q of 0.7 to 1), generally defi nable as Refl ex (vented) systems. On these
systems, it keeps better control of the woofer under high power applications.
ACOUSTIC BASS Output: Damping Factor 70
BIG bass, highlighting dynamic impact, acoustically characterizes this output. It is
especially suitable for techno, electronica and club music and is especially useable
for achieving high SPL scores. We suggest its use for over damped loudspeaker/
enclosure systems (Q of 0.5 to 0.7), generally defi nable as Acoustic Suspension
(sealed) systems.
No one setting is correct for every listener. We suggest you try listening to your music
in both output modes and make your decision accordingly. Close your eyes, sit back,
listen and let your ears make the decision.
4
CONFIGURATION TABLE
SUBSONIC SUB EQUALIZER SUBWOOFER
MODE FREQ. MODE FREQ.LEVEL FREQ.
RESPONSE
CURVE
SUBW.
Freq.
SUBW.
EQ.
Freq.Freq.
SUBW.
EQ.
Freq.Freq.Freq.
SUBS.
Freq.
SUBS.
INPUTS SPEAKERS OUT mono
Pre In (L; R; L+R mix)
Speakesr In - IN (L; R; L+R mix)
2


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