Proceed HPA2 - Manual (Page 21)

21
1 DISCONNECT YOUR AMPLIFIER FROM EVERYTHING
Start with your amplifier totally disconnected from inputs, outputs, and AC
power. It is always best to power down an amplifier before changing connec-
tions; here you are changing its basic configuration, making it essential.
2 CONNECT THE SINGLE-ENDED BRIDGING INPUT ADAPTER TO THE AMP’S
INPUTS
Connect the two male XLRs to two inputs of your amplifier, noting which
XLR is marked red and which is black. The channel with the red, normal
input will later be connected to the red, positive terminal of your loud-
speaker.
3 CONNECT THE SINGLE-ENDED BRIDGING OUTPUT ADAPTER TO TWO
SIDE-BY-SIDE BLACK OUTPUT TERMINALS
Connect one end of the Balanced Bridging Output Adapter to a black out-
put terminal on one side of the amplifier, and then connect the other end to
a black output terminal on the other side of the amplifier. (The two connec-
tions should be side-by-side rather than one above the other.) Make sure
these connection are snug and secure.
4 CONNECT YOUR LOUDSPEAKER WIRE ACROSS TWO SIDE-BY-SIDE, RED
OUTPUT TERMINALS
Please read the following carefully:
Connect the positive/+/red binding post of your loudspeaker to the red out-
put terminal associated with the red (normal) side of the Input Adapter.
Connect the negative/–/black binding post of your loudspeaker to the red
output terminal on the other side of the amplifier, the one associated with
the black (inverted) side of the Input Adapter.
Following this connection convention preserves the polarity of the signal
sent to the loudspeaker. In practice, the most important thing is to be con-
sistent throughout the system, as inconsistency will result in out-of-phase
loudspeakers. In turn, this results in unstable imaging and poor bass repro-
duction. (The effect is not dangerous, but neither is it subtle.)
5 CONNECT ONE OUTPUT CHANNEL OF YOUR PREAMPLIFIER TO THE INPUT
OF YOUR BRIDGED AMPLIFIER
The female RCA at the junction of the Single-Ended Bridging Input Adapter
is now the single input to this bridged amplifier.
6 REPEAT AS NEEDED FOR OTHER CHANNELS
7 POWER UP YOUR AMPLIFIER
Plug the amplifier back into the AC mains; engage the
power button, fol-
lowed a few seconds later by pressing standby to turn on the amplifier.