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FRONT & REAR PANEL CONTROLS
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FRONT PANEL
1. MOUNTING
The rack mounting holes are designed on ISO standard spacing. Four
10-32 x .5" phillip machine screws are normally used to secure the amp.
Rear support brackets are not required.
2. POWER SWITCH
Check the power amp connections and verify the AC line power source
before engaging the POWER switch. The yellow LED unmistakably indi-
cates that all circuits are properly powered up. This color was chosen so
the operator could see the red protect indicator from a distance.
3. CHANNEL LEVEL CONTROL
A precision input LEVEL attenuator is used to adjust the volume levels.
To deliver the amps full power without reducing headroom of the signal
source, the level controls should be turned up full.
4. CHANNEL SIGNAL INDICATOR
The green SIGNAL LED indicators will illuminate when there is a signal pass-
ing to your speakers (-30dBM).
5. CHANNEL CLIP INDICATOR
The red CLIP LED indicators will start to flash when each channel has
reached its maximum output. Occasional flashing caused by lower bass
frequencies is OK. However, consistent flashing caused from higher
frequencies may damage high frequency drivers (excessive distortion).
This does not cause damage to the amp.
6. EQ EXPAND SWITCH
When set to the 'in' position this circuit will cut the mids by -4dB at
1KHz. This works well as a loudness contour when operating at low volume
levels or adds tone when using it in a bass or guitar rack. When set to
the 'out' position it provides a flat, normal response. Try it both ways
and set as desired.
REAR PANEL
7. XLR CHANNEL INPUTS
For most professional applications, use the XLR balanced input. This
will help to reduce hum and allow for longer cable runs from your signal
source (mixer, etc). Because this is a balanced input, the gain will be 6
dB higher than using a non balanced 1/4" input. XLR pin configuration:
Pin 1: Grounded through the GROUND LIFT switch, Pin 2: positive Bal.
signal and Pin 3: negative Bal. signal.
8. CHANNEL 1/4" PHONE JACK INPUT
These 1/4" TRS phone jacks are designed to receive either balanced or
unbalanced input signals. Balanced signals coming into this jacks should
be wired with the connector's tip going to signal + and the connector's
ring to signal –. The connector's sleeve is then tied to ground through
the GROUND LIFT switch–.
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9. SPEAKER OUTPUTS
the amp off before connecting your speakers.
10. SPEAKER BINDING POSTS
nect your speakers. Wire sizes up to 7 gauge (50 amps) can be inserted
into the binding posts "side holes". Larger cable can be used with "banana"
plugs which plug into the ends of the binding post (remove colored caps).
Binding posts are spaced on ISO standards. Use the two center RED bind-
ing posts for BRIDGE speaker connections (see 11 BRIDGE MODE).
11. BRIDGE MODE
ered mono (single channel) amp. With your amp off, push in the rear
BRIDGE switch after you have made your speaker connections to the rear
center RED binding posts (ch 1 is + and ch 2 is -). No other speaker jack
or binding post can be used at the same time!". The INPUT and LEVEL
is handled by channel 1. Channel 2 is non-operational. The minimum
speaker impedance is 8 ohms. CAUTION: The power developed by bridg-
ing your amp can destroy speakers!
12. PARALLEL OR "Y" INPUTS
input. All signals entering any input will be available on both channels.
This eliminates Y adapter cables. This feature is used to "daisy chain"
one piece of equipment to another. Just plug into the unused INPUT (1/4"
or XLR) and it will become an output for other equipment.
13. INPUT GROUND LIFT
grounded loop with the inputs that result in audible hum. The input GND
LIFT (1/4" & XLR) switch on the rear panel will help eliminate this prob-
lem. If not, another way to eliminate ground loops is to install a "line match-
ing" transformer between the amplifier input and the signal source and
cut the ground wire to PIN 1.
14. AC POWER
Hz or 240V 50 Hz. The voltage range is 90V to 250V. Never defeat the
grounded connection or electrocution may result!
15. IMPEDANCE SWITCH
Note: That this amp is capable of 100w
per channel at 8 ohms. Be certain that
the speakers can handle this amount of
power.
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The standard 1/4" SPEAKER jacks are used for most applications. Turn
For heavy-duty speaker connections, use the rear BINDING POSTS to con-
The DCM200L can be operated in bridge mode if you require a high pow-
The rear PARALLEL switch allows you to drive both channels from either
Many times sound systems are connected in such a manner to cause a
The internal Switchmode power supply is designed to run on 120V 60
Set this switch to correspond to the min impedance of your speakers.
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8Ω/CH
100W
75W
4Ω/CH
X
100W
16Ω BR
150W
200W
X
200W
8Ω BR
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