Klipsch P-39F Bi-wiring, Bi-ampingand Tri-amping, Tri-wiring, Amplifier, One channel shown

Connecting the Loudspeakers - 3 Connecting the Loudspeakers - 4

Bi-wiring

Bi-wiring reduces unwanted interactions between the bass drivers and the midrange and treble units.

True bi-wiring is connecting separate cables from the bass terminals and the midrange/treble terminals to a common connection at the amplifier. Several cable manufacturers produce specialized cables where one cable jacket contains four cables, thus enabling bi-wiring within one cable cluster. This eliminates the need to run separate cables and simplifies connection. In any case, the method of connection is the same.

Prepare the crossover panel as shown on the previous page. Proceed as for standard wiring, but connect one cable to the bass terminals of the speaker. Connect a second cable to the midrange and treble terminals. Refer to the diagram. After connection, tighten all the terminals with the supplied wrench as shown previously.

Bi-amping and Tri-amping

Connecting each loudspeaker drive element to separate amplification offers the highest possible performance level. It is not necessary for the amplifiers in the treble and bass sections to be identical. In fact for tube ampli- fier enthusiasts, there are advantages to using smaller amplifiers in the treble and midrange sections as the smaller transformers offer the significant possibility of extended, sweeter treble response.

To multi-amp, the following criteria are essential:

• The amplifiers should be phase coherent. In other words, all amplifiers should be, by design, phase non-invert-
	ing or phase inverting, or if not, should be connected so as to be all phase non-inverting or phase inverting.
• The amplifiers must have identical voltage gains, or should be set up to have identical voltage gains.
•	The amplifiers must have low residual noise characteristics, especially in the midrange and treble sections.
•	Amplifiers in corresponding channels must be identical; i.e., both bass amplifiers must be the same and so on.

HF

MF

LF

HF

MF

AMPLIFIER

LF

If any of the above conditions are not met, separate amplification will be significantly worse than ordinary bi- or tri-wiring. If you are unsure about these concepts or unsure if your amplifiers meet these criteria, it is es- sential that you consult your Klipsch specialist dealer before proceeding further.

Right Speaker Left Speaker

Tri-wiring

The logical extension to bi-wiring is tri-wiring, where all the elements of the loudspeaker are separately con- nected to the amplifier.

To tri-wire, you need to remove all the straps connecting the terminal pairs and then connect three cables as shown in the diagram below. After connection, tighten all the terminals with the supplied wrench as shown previously.

HF	MID /
	TREBLE
	AMP
MF
	BASS
LF	AMP

Bi-amping

The Mid/Treble amplifier is bi-wired

(One channel shown)

TREBLE

HF

HF

HF

MF

AMP

MID

Tri-amping

MF

AMPLIFIER

LF

Right Speaker

MF

LF

Left Speaker

LF

AMP

BASS

AMP

(One channel shown)

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Important Note. After connecting and placing the loudspeaker upright, the connections will be hidden from	Important Note. After connecting and placing the loudspeaker upright, the connections will be hidden from
view. We strongly recommend that you identify each cable to eliminate possible difficulties down the line.	view. We strongly recommend that you identify each cable to eliminate possible difficulties down the line.

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