Low Out (Subwoofer) - Mackie M-2600 Owner's Manual

LOW OUT (SUBWOOFER)

Here's a special surprise: If you bought the
M•2600 amplifier to power a subwoofer system,
you just saved yourself the cost of a crossover!
The M•2600 amp has an active crossover built
in. The amplifier can play the frequencies
below the crossover point set with the CROSS-
OVER switch
.
5
dB
0
dB
–5
dB
–10
dB
–15
dB
20 100
Hz Hz
Crossover settings.
Here's how to configure it:
1. Turn the M•2600's POWER off.
2. Set the OUTPUT APPLICATION switch
to LOW OUT (SUBWOOFER).
3. Select a crossover point, via the CROSS-
OVER switch : At 120Hz, you'll get the
low sub-harmonics on up to the audible
bass range. At 90Hz, you'll get the standard
subwoofer range. At 60Hz you'll get the
lowest frequencies, more to be felt than
heard. You'll probably want to try this
switch each way.
4. Make sure the LOW CUT FILTER
OFF or nearly OFF. If it is turned up above
the crossover frequency, the output from the
amplifier will be greatly diminished.
28
5. Set the AMP MODE
6. Connect your cords and speaker cables as
7. Turn the M•2600's POWER on. Woof!
M•1400i to reproduce the rest of the audio
range, follow this procedure:
1. Connect the THRU
2. Set the THRU switch
1k 10k 20k
Hz Hz Hz
3. With POWER off, set the OUTPUT APPLICA-
range below the crossover point, and the second
amplifier will play the frequency range above it.
See the diagrams and further information on
pages 13–16. As a general rule, use your biggest
amplifier to power the subs.
is set to
to either STEREO,
MONO, or BRIDGED, depending on your
application. These three modes operate as
usual with LOW OUT (SUBWOOFER)
activated, except the speakers just get the
lower frequencies.
required (see the examples on pages 13-16).
If you want to use a second M•2600 or an
jacks on the first
subwoofer amplifier to the INPUT
on the second amplifier.
on the first
subwoofer amplifier to the HIGH OUT
position.
TION switch
on the second amplifier to
FULL RANGE (LIMITER either ON or OFF).
The first amplifier will play the frequency
jacks