Parasound HALO JC 1+, Owner'S Manual

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Bi-Wiring and Bi-Amping
Bi-wiring and Bi-amping can only be used with speakers that have separate input terminals for HF
(high frequency) and LF (low frequency). The straps that connect the speaker’s LF and HF inputs will
need to be removed. Some KEF speakers use a rotary switch instead of metal straps to disconnect the
HF and LF sections internally. Bi-wiring requires one JC 1+ for each speaker. Bi-amping requires two
JC 1+ for each speaker.
Bi-Wiring
The JC 1+ is equipped with two pairs of speaker terminals marked Speaker Output 1 and Speaker
Output 2. This simplifies attaching two pairs of speaker wires. When bi-wiring, connect one JC1+
Speaker Output terminals to the speaker’s LF terminals and the other Speaker Output terminals to the
same speaker’s HF terminals.
Bi-Amping
Bi-Amping in this context is technically “passive bi-amping” so an external electronic crossover is not
required. The speaker LF and HF terminals still connect to the speaker’s internal passive crossover
circuits. With bi-amping the LF and HF speaker terminals connect to two separate amplifiers.
Connecting speaker wires for bi-amping
Bi-Amping requires two JC 1+ per speaker (four total for a stereo setup) . Each speaker must be
equipped with separate LF (Low Frequency) and HF (High Frequency) input terminals. The first JC 1+
will power the LF section of one speaker. A second JC 1+ will power the HF of the same speaker. A
third JC 1+ will power the LF of the other speaker and a fourth JC 1+ will drive the HF of that speaker.
Setting up the input wires for bi-amping
Your stereo preamp has Left and Right output jacks. With Bi-Amping each of the preamp’s output
channels has to drive two JC 1+s. This can be accomplished with a “Y” adapter cable. Rather than
using a “Y” adapter you can also use the XLR and RCA “Looping” Output Jacks of the JC1+. The Loop
Output jacks enables the input signal for each channel to be daisy-chained to the other JC 1+ Input
jack. Connect the first JC 1+ Loop Output jack to the Input jack of the second JC 2+. Repeat for the
preamplifier’s other channel and for the third and fourth JC 1+.