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Sunfire 400 seven User Manual

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User's Manual
13
CHAPTER 2
+  -
RIGHT 
TWEETER
(CURRENT
SOURCE)
+  -
RIGHT
WOOFER
+  -
LEFT
WOOFER
+  -
LEFT
TWEETER
(CURRENT
SOURCE)
R
L
UNBALANC
ED
PREAMP OUTPUTS
LOUDSPEAKER
S
Note: The remaining channels can 
be used to drive other speakers, 
or left unconnected. 
Biamping Connections  
Speaker-level audio outputs
From: AmpliÞ er outputs
To:     Speaker input posts
Line-level audio signals                              
From: AmpliÞ er Front L/R RCA                  
To:     AmpliÞ er Rear L/R RCA inputs
+  -
RIGHT 
TWEETER
(CURRENT
SOURCE)
+  -
RIGHT
WOOFER
+  -
LEFT
WOOFER
+  -
LEFT
TWEETER
(CURRENT
SOURCE)
R
L
L
R
L
R
L
R
INPUT
HIGH OUT
FULL FREQ
RANGE
LOW FREQ
RANGE
HIGH FREQ
RANGE
LOW OUT
UNBALANCED
PREAMP OUTPUTS
ACTIVE EXTERNAL CROSSO
VER
LOUDSPEAKER
S
Line-level audio signals                             
From: PreampliÞ er main RCA outputs
To:     AmpliÞ er RCA inputs 
Biamping with an external 
crossover 
If you have an external active 
crossover, you can greatly increase 
the efÞ ciency of your system. The 
crossover will split the preampliÞ er 
output signals into two frequency 
ranges.
You can connect the crossover's 
low frequency outputs to the ampli-
Þ er's rear channel inputs, and the 
crossover's higher frequency outputs 
to the ampliÞ er's front channel inputs.
This is an efÞ cient system because 
the channels only amplify signals with-
in the frequency range of the speaker 
el e ment they are driving. Little power 
is wasted.
Make sure that the cross over point 
of your active crossover is adjusted 
to match the crossover point of your 
speakers. Consult your speaker and 
crossover owner's manuals.