Issue 2
Page 10 of
13
Bi-wiring (in monoblock mode only)
It is possible to take advantage of the above feature to “bi-wire” the outputs to
suitable
speakers.
Such speakers must have at least
four
terminals; two for the treble, high frequency (or HF) driver and two more
for the bass, low frequency (or LF) driver.
Any “shorting links” between treble and bass input terminals (on the speakers)
must
be removed for maximum
benefit. These links normally are visible under the speaker’s terminals as gold plates/bars connecting the
terminals up in pairs.
Please consult speaker manuals/user support for more details.
Switches set to MONO.
OPERATION
LEFT
Speaker
+ HF
- HF
+ LF
- LF
RIGHT
Speaker
+ HF
- HF
+ LF
- LF
LEFT output
Pre-amplifier
RIGHT output
Mono (block) mode “bi-wiring” audio leads connection diagram.
(Trigger and mains leads omitted for clarity).
Indicator LEDs
There are two further indicator LEDs that allow the state of the unit to be determined.
STANDBY LED
(orange) comes on briefly during start-up this is normal. It is also common to see the LED flash
during loud music passages. This indicates the amplifier is close to clipping and further increases in volume
may cause sound quality to suffer as a result. If the clipping light often flashes during normal listening, turn
down the volume and/or consider using the amplifier in MONO mode for more power (see above).
TEMP LED
(red) will come on if the device is getting too hot internally. This could indicate excessively high
current through the speaker outputs. If the TEMP LED comes on, maximum power output will be internally
reduced to allow the device to cool down. A Flashing RED LED indicates the chip has reached upper
temperature limit and although the unit may continue to work, it
should
be shut down to clear the fault.
Continuous operation into very low impedance/short circuit may cause the unit to shut down. Switch off the unit
and check wiring
and
speakers themselves for short circuits. Allow the M1 PWR approx. 10 minutes to cool
down before attempting to turn it on again.
