Xantech PA635 User Manual

Page 10

Model PA635

CONNECTING THE PA635

When making connections to the PA635 be sure the power cord is unplugged. Proceed as follows:

COMMON

LOCAL

GROUND

ATUS

IR IN

STEREO

MONO

BRIDGED

MODE

LEFT

RIGHT

SPEAKER

-- --

+ BRIDGED --

LEFT

RIGHT

VIDEO

AUDIO

RCA Type

Patch Cords

Preamp Outputs

ZPR68, etc.

PA635

Rear Panel

Be sure speakers are

connected with correct

polarity as shown.

Wall speakers,

shelf speakers, etc.

Left

Right

Set MODE

Switch to

STEREO position

Figure 6 – Stereo Mode Connections

Stereo Mode Connections

1. Using good quality RCA-type patch cables, connect the L and R OUTPUT jacks of the driving preamp to the

LEFT and RIGHT input jacks on the PA635. Do this for each amplifier pair. Refer to Fig. 6.

2. Slide the MODE switch to the STEREO position.

3. Using good quality speaker wire, connect the individual speaker leads to the 4-terminal "SPEAKER"

connectors on the PA635 as shown.

4. The PA635 is 4-Ohm safe in Stereo Mode. Make sure the impedance presented to the speaker terminals by

the speakers (or any combination of speakers) is 4-Ohms minimum.

5. Be sure to observe correct polarity by connecting the "+" and "–" terminal from each channel on the PA635 to

the corresponding "+" and "–" terminals on each speaker. This will ensure correct "phasing". See Fig. 6 and
Speaker Phasing, following. Since the connectors are removable, you may unplug them for ease of lead
assembly.

6. As a rule of thumb, use 18 gauge speaker wire for speaker runs up to 30' (9m), 16 gauge up to 70' (21m), and

14 gauge up to 150' (39m). The 4-terminal connectors accept wire sizes up to 12 gauge max.

7. Strip the insulation back about 1/4" (6mm) and twist the strands on each lead to prevent fraying.