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FRONT & REAR PANEL CONTROLS
1
DCM1000
8 OHMS/CH
225W
4 OHMS/CH
350W
2 OHMS/CH
500W
8Ω BRIDGED
700W
4Ω BRIDGED 1000W
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FRONT PANEL
1. MOUNTING
A sturdy one piece 12 gauge steel face plate accommodates easy transporting along with facilitating
rack installation. The rack mounting holes are designed on ISO standard spacing. Four 10-32 x .5" phillips
machine screws are normally used to secure the amp. Rear support brackets are not required.
2. POWER SWITCH/INDICATOR/FUSE
Check the power amp connections and verify the AC line power source before engaging the POWER
switch. The yellow LED unmistakably indicates that all circuits are properly powered up. Yellow is used
so the operator can see the red indicators (clipping or protect) from a distance. If the yellow power LED
does not light up, remove the lid and replace the fuse located in the back corner where the
AC cord connects to the circuit board. (DCM1015: 20AMP slow blow)
3. CHANNEL LEVEL CONTROL
A precision input LEVEL attenuate is used to adjust the volume levels. To deliver the amps maximum power
without reducing the headroom of the signal source, the level controls should be turned full on.
4. CHANNEL SIGNAL INDICATOR
The green SIGNAL LED indicators will start to flash when there is a signal passing to your speakers (-30dBM).
This lets you know when the amp is passing a signal to your rear speaker connectors.
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. DUAL 15-BAND GRAPHIC EQUALIZERS
Controlling feed-back in a monitor system and fine tuning your sound are easy with the DCM1015's two
on-board EQ's. For feed-back, find the offending frequency and push the slider down to cut the level of
that frequency, thus allowing more gain (volume) before feed-back. For tone control, move the sliders up
or down from their center detent positions to suit your taste.
7. EQ IN SWITCHES and INDICATORS
To activate the graphic EQ's push in the EQ IN switch and the indicator will light. With the EQ IN switch
out the amp functions as a standard amplifier
8. PROTECT LED INDICATOR
The red PROTECT LED provides the operator with information about the status of the amplifier. The
PROTECT LED can come on under 3 different conditions (when this happens both channels are muted
by disconnecting the output speaker relays protecting your speakers);
1) During power-up, the amplifier stays in a muted state for approx. 3 sec until it determines that
everything is functioning normally (no output shorts or over temp conditions).
2) Both channels are muted when the output load draws excessive current or a direct short is detected
caused by a shorted speaker cable or speaker system. Reset this condition by turning the amp
off for two seconds and then on again. Check for shorted cables and the total speaker system
impedance connected to each channel (2 ohms is the minimum per ch or 4 ohms BRIDGED).
3) Overheating is usually determined when the amp stops in the middle of a performance and the
PROTECT LED comes on. If this is the cause, leave the amp on for the fan to cool the amp down.
The amp will automatically reset within 1 to 3 minutes and the PROTECT LED will turn off when
ready. Check for the following conditions; a) The rear intake air is restricted, b) The intake air is
extremely warm, c) The front exhaust vents are restricted, or d) Excessive speaker load (try other
speakers or remove speakers if you have more than one connected to each channel). Again, the
minimum impedance is 2 ohms per ch or 4 ohms BRIDGED)
REAR PANEL
9. XLR CHANNEL INPUTS
For most professional applications, use the XLR balanced inputs. This will help to reduce hum and allow
of longer cable runs from your signal source (mixer, etc). Because this is a balanced input, the gain will
be 6 dB higher than using the 1/4" input jack with non balanced lines. XLR pin configuration: Pin 1: Grounded
through the GROUND LIFT switch, Pin 2: positive Balanced signal and Pin 3: negative Balanced signal.
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15
9
13
11
10
12
16
(Recessed)
USE THE IN/OUT SWITCHES TO BYPASS THE EQ's.
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7
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8 8
12 12
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7 7
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6 6
15 15
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5 5
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4 4
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CLIP
CLIP
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22 22
3 3
SIGNAL
SIGNAL
30 30
2 2
30 30
∞ ∞
∞ ∞
1 1
50 50
50 50
0 dB
0 dB
CHANNEL ONE
CHANNEL TWO
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3
10. 1/4" CHANNEL INPUTS
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 connec-
tor's ring to signal -. The connector sleeve is then tied to ground through the GROUND LIFT switch.
11. PARALLEL OR "Y" INPUTS
The rear PARALLEL switch allows you to drive both channels from either 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.
12. INPUT GROUND LIFT
Many times sound systems are connected in such a manner to cause a grounded loop with the inputs
that result in audible hum. The input GND LIFT (1/4" & XLR) switch on the rear panel will help elimi-
nate this problem. If not, another way to eliminate ground loops is to install a "line matching" trans-
former between the amplifier input and the signal source and cut the ground wire to PIN 1.
13. LIMITERS
To activate the LIMITERS, engage the rear limiter switch. The built-in professional limiters are recommended
to hold down peaks that could cause early distortion. Limiters will help to raise the average power so that
you can get more output from each channel. To check the effectiveness of the limiters when the channel
starts to distort (under the amps full output), engage the limiters and hear the reduction of the distortion.
If the distortion stops, you can try to turn the channel up for more power. The lower bass frequencies are
most affected. WARNING: Do not check in an environment where the sound level could damage your ears!
14. SPEAKER 1/4" AND SPEAKON™ OUTPUTS
The standard 1/4" SPEAKER jacks are offered for low power applications. Speakon™ connectors are
provided for high power application. Secure the Speakon™ connection by turning to the right. The center
Speakon™ is for the "Bridge" output only. Turn the amp off before connecting your speakers.
15. TWIST-LOCK & BINDING POSTS SPEAKER OUTPUTS
Use the rear BINDING POSTS or TWIST-LOCKS as an alternate high powered connection. Wire sizes up
to 7 gauge (50 amps) can be inserted into the binding post "side holes". Larger cable can be used with
"banana" plugs which plug into the end of the binding posts (remove red caps). Binding posts are spaced
on ISO standards. Use the two center RED binding posts for BRIDGE speaker connections (see 15 BRIDGE
MODE). Use 12 GA cable for Twist-Lock connection. Insert cable and twist to lock into place. Use center
Twist-Lock connector for BRIDGING speaker connections. NOTE: REMEMBER TO PUSH IN
"BRIDGE" BUTTON WHEN BRIDGING.
16. BRIDGE MODE—25V/70V DISTRIBUTION SYSTEMS
The "DCM" Series can be operated in bridge mode if you require a 25V / 70V distribution speaker system
or a high powered mono (single channel) amp. With your amp off, push in the rear (recessed) BRIDGE switch.
Use the center Twist-Lok speaker output or make your speaker connections to the center RED binding posts
(ch 1 is + and ch 2 is -). No other speaker connectors or binding posts can to 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 4 ohms or a 25V distribution line. CAUTION: The power developed by bridging your amp can destroy most
speaker systems! Make sure your speaker(s) are of the proper impedance and power handling.
17. AC POWER
Your amp is designed to run on either 120V 60 Hz or 240V 50Hz depending on the model purchased.
The voltage range for 120V model is 95V to 132V and for 240V model it is 195V to 255V. The rear heavy-
duty AC receptacle will accept a universal grounded AC cord that is designed your country. Be sure to
check your power source before plugging into a grounded (3 prong) outlet. Never defeat the grounded
connection or electrocution may result! Firmly push the AC cord all the way into the receptacle.
FUSE: The fuse is located within the main chassis above the AC connector mounted on the rear, inside
the PC card. Normaly if the fuse fails, the amp will require service. See spec. chart for fuse values.
NOTE: Each amp will require a dedicated circuit if you are driving the amp to its full output. There will
be a sustained loss of power if the AC voltage falls below the rated 120V or 230/240V. Use a heavy
gauge power cable and power source.
18. COOLING VENTS/FAN
Upon rack installation, the rear of the amp must be fully exposed to room temperature air. The sur-
rounding air should not be warmer than 120° or the thermal protection could active the PROTECT LED.
The front cooling vents are not to be restricted.
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DCM1000
1000 Watt Power Amp
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8 8
7 7
6 6
5 5
4 4
PROTECT
3 3
POWER
2 2
1 1
0 dB
0 dB
2
WARNING
This product produces high
sound pressure levels that
could damage your hearing.
Use with caution.
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