NHT SA-3 - Manual (Page 8)

This method of connection allows your main speakers to receive the full-range audio signal (no high-pass filtering), and the subwoofer
to be utilized for low bass extension only.
1) Your L & R speakers are connected directly from your amplifier / receiver.
2) If you have a receiver with “Pre-Out” (or “Line Out”) jacks but no “Main-In,” you may connect the SA-3 to the “Pre-Out” without
having to route the signal back into the receiver. Using an RCA interconnect cable, connect the “Pre-Out” to the SA-3’s LINE IN.
2a) If you have a separate preamplifier and amplifier, and the preamplifier has two pairs of “Line Out” jacks, connect one pair directly to
your main amplifier, and the second pair to the SA-3’s LINE IN. If your preamplifier has only one pair of “Line Out” jacks, you may uti-
lize two “Y”-splitters to send the line-level signal into both the main amplifier and the SA-3.
3) Many integrated amplifiers and receivers feature a “Subwoofer Out” jack. If your receiver’s “Subwoofer Out” consists of a single RCA
jack, you may plug it into either the left or right LINE IN jack on the SA-3. Alternately, you may utilize a “Y”-splitter to split the line-level
signal into both jacks.
3a) Check your receiver’s owner’s manual to see if the “Subwoofer Out” signal is full-range or low-pass filtered. A full range “subwoofer
out” signal is preferred, however on many receivers the “Subwoofer Out” signal is low-pass filtered to cut out frequencies above a
certain point (80Hz, for example), which means the signal coming out this jack has already passed through an internal crossover in the
receiver. This can be problematic, because the signal will encounter further low-pass filtering when passing through the SA-3. If
possible, bypass any low-pass filtering contained in the “Subwoofer Out” signal, as the SA-3 will provide greater flexibility of adjustment.
If the receiver’s “subwoofer out” signal has a selectable low-pass filter, select the highest setting.
4) When used as low frequency effects channel, set low pass Fc to 150Hz.
6
Connect the SA-3 from a receiver / preamplifier’s “Pre-Out”, “Line Out” or “Subwoofer Out,” with no high-pass filtering
Use if:
You wish to run your L & R speakers full-range
You have a receiver with “Pre-Out” jacks but no “Main-In” jacks
You have a receiver with “Subwoofer Out” jacks only
You are using the subwoofer as the low frequency effects channel - sub out
SW3P Connection Method #1
S W 3 P C o n n e c t i o n M e t h o d # 1