CXL-80T Installation Instructions v1.0
4
CON30 CON31 CON32 CON33
CON34 CON35 CON36 CON37
5. Identify the transformer’s primary winding – this is the red/black flying lead fitted with a 2-pin connector. Plug this into
the relevant power module output connector. Note that each module has two channels, that nearer the front of the chassis
powers Zones 1 and 2, the other Zones 3 and 4. Refer to the diagram on page 5.
6. If configuring the zone output for 100 V-line operation, plug the transformer’s secondary winding – the other flying lead
(blue/mauve/white) - into the 3-pin header behind the SPEAKER OUTPUT connector vacated in Step 4. (This will be the one
closer to the rear panel.)
7. If configuring the zone output for 70 V-line operation, plug the transformer’s other flying lead (blue/mauve/white) into the
alternative 3-pin header behind the SPEAKER OUTPUT connector (this will be the one further away from the rear panel). The
headers are CON34 (Zone 1), CON35 (Zone 2), CON36 (Zone 3) and CON37 (Zone 4).
8. For each zone being converted to 70/100 V-line operation, enable the channel’s 65 Hz hi-pass filter by moving the appropriate
jumper from OFF to ON: these are J3 (Zone 1), J4 (Zone 2), J5 (Zone 3) and J6 (Zone 4). This is important, as low frequency
signals at high level can saturate the transformer cores, causing unpleasant distortion and possibly activating the amplifier’s
limiter circuitry. See the following diagram for location of PCB jumpers.
