CARVIN DCM1000L (01) PDF Document

INSPECT YOUR UNIT FOR ANY DAMAGE which may have occurred during shipping. If any damage is found, please notify the shipping company and CARVIN immediately.

SAVE THE CARTON & ALL PACKING MATERIALS. In the event you have to re-ship your unit, always use the original carton and packing material. This will provide the best possible protection during shipment. CARVIN and the shipping company are not liable for any damage caused by improper packing.

SAVE YOUR INVOICE. It will be required for warranty service if needed in the future.

SHIPMENT SHORTAGE. If you find items missing, they may have been shipped separately. Please allow several days for the rest of your order to arrive before inquiring.

RECORD THE SERIAL NUMBER on the enclosed warranty card for your records. Keep your portion of the card and return the portion with your name and comments to us.

WATER AND MOISTURE: Appliance should not be used near water (near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

POWER SOURCES: The product should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.

GROUNDING OR POLARIZATION: Precautions should be taken so that the grounding or polarization is not defeated.

POWER CORD PROTECTION: Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.

SERVICING: The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.

FUSING: If your unit is equipped with a fuse receptacle, replace only with the same type fuse. Refer to replacement text on the unit for correct fuse type.

U.K. MAIN PLUG WARNING: A molded main plug that has been cut off from the cord is unsafe. NEVER UNDER ANY CIRCUMSTANCES SHOULD YOU INSERT A DAMAGED OR CUT MAIN PLUG INTO A POWER SOCKET.

To wire Speakon™ connectors:

1. Slip the “Securing Hub” then “Cable Clamp” over the cable before attaching wires.

2. Strip the cable insulation back 3/4″ and tin the wires 1/4″.

3. Use the following connection configuration:

Black (1+)/positive

White (1-)/negative

Red (2+)/positive

Green (2-)/negative

4. Solder the wires into the contacts or use the hex screws provided.

The minimum impedance for the CARVIN DCM1000L is 2 ohms per channel and 4 ohms when bridged.

The sturdy one piece 12 gauge steel face plate accommodates standard 19″ rack installation. The rack mounting holes are designed on ISO standard spacing. Four 10-32x.5″ phillips machine screws are normally used to secure the amp. Rear support brackets are not required.

The RED PROTECT LED provides information about the status of the amplifier. When this LED is on, both channels are muted and the speaker relays disconnect the speakers. The PROTECT LED can activate under 3 different conditions:

1) During power-up, the amplifier stays in a muted state for approximately 3 seconds until it determines that everything is functioning normally (no output shorts or over temperature conditions).

2) The RED PROTECT LED will illuminate when the output load draws excessive current or a direct short is detected, caused by a shorted speaker cable or speaker system. To reset this condition, turn the amp off for two seconds and then on again. Check for shorted cables and ensure the total speaker impedance is not below 2 ohms per channel or 4 ohms bridged.

3) Overheating is indicated if the amp stops during a performance and the RED PROTECT LED comes on. If this happens, leave the amp on for the fan to cool it down. The amp will automatically reset within 3 minutes, and the PROTECT LED will turn off when ready. Check for the following conditions: a) The rear air intake is not restricted, b) The intake air is not extremely warm, c) The front exhaust vents are not restricted, or d) No excessive speaker load.

A precision input LEVEL attenuator is used to adjust the volume levels. To deliver the amp’s maximum power without reducing the headroom of the signal source, the level controls should be turned full on. For multi-speaker systems, the volume levels can be used to match loudspeakers with different output sensitivity levels and room locations.

Your CARVIN DCM1000L has a 3-meter segment per channel to indicate levels. The green SIGNAL LED indicator will start to flash when there is a low input signal (-30dBu). The 40% and 80% LEDs will light solid when output power has reached 40% and 80% levels.

The RED CLIP LED indicators flash when each channel has reached its maximum output. Occasional flashing caused by low frequency peaks is difficult to prevent and will not harm speakers capable of handling the amplifier’s output. However, consistent flashing (excessive clipping/square wave) will damage speakers if not reduced. This does not cause damage to the amp.

Upon rack installation, the rear of the amp must be fully exposed to room temperature air. The surrounding air should not be warmer than 120°F with full loading and heavy usage, or the thermal protection could activate early. The front cooling vents are not to be restricted. Air flows from back to front. The use of external fans needs to flow the same direction or the amplifier will starve for air and thermal off.

XLR Inputs: The XLR balanced inputs will help reduce signal interference and allow longer cable runs. Because this is a balanced input, the gain will be 6 dB higher than using an unbalanced 1/4″ cable. XLR pin configuration is Pin 1: Grounded through the GROUND LIFT switch, Pin 2: positive balanced signal, Pin 3: negative balanced signal. The THRU XLR connector passes the signal out for connection to another amplifier’s input.

1/4″ TRS Inputs: The 1/4″ TRS jacks are balanced and designed to receive unbalanced input signals. Balanced signals coming into this jack should be wired with the connector’s tip going to signal + and the connector’s ring to signal -. The connector’s sleeve is tied internally to ground through the GROUND LIFT switch.

The rear PARALLEL switch connects both channels together from either input. This eliminates the need for Y adapter cables. This feature is used to “daisy chain” one piece of equipment to another. Just plug into the unused INPUT (TRS or XLR) and it will become the output for other equipment.

Systems can be connected in such a manner as to cause a “ground loop” with the inputs, which results in audible hum. The input GND LIFT switch (for both TRS & XLR) on the rear panel will help eliminate this problem.

To activate the LIMITERS, engage the rear limiter switch. The built-in limiters are recommended to hold down peaks that could cause clipping. Limiters only affect the signal if the amplifier has entered clipping, so it is best to have the limiters engaged at all times to protect the speakers from excessive clipping.

With your amp off, push “in” the rear (recessed) BRIDGE switch. Make your connections to either the center bridge Speakon™ or the RED binding posts (channel 1 is + and channel 2 is -). In bridged mode, the amplifier channels are out-of-phase from each other. Accidental pressing of the switch will cause damage or improper operation.

WARNING: No other speaker connectors or binding posts may be used at the same time! Use channel 1 INPUT and LEVEL for bridge mode. Channel 2 is not used, except for parallel to another amplifier. The minimum speaker impedance is 4 ohms.

CAUTION: The power developed by bridging your amp can destroy most speakers.

Turn the amp off before connecting your speakers.

Speakon™ / 1/4″ Combo Outputs: The speaker connectors feature a combination of both 1/4″ SPEAKER jacks for low power applications and Speakon™ connectors for high power application. Secure the Speakon™ connection by turning to the right to the lock position. The center Speakon™ on the 2-channel amp is for the “Bridge” output only.

Speaker Binding Posts: For bare wire (up to 7 gauge) or banana connectors, use the rear BINDING POSTS to connect your speakers. Wire sizes up to 7 gauge 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. For BRIDGE speaker connections, follow the BRIDGE MODE instructions.

Your CARVIN DCM1000L is designed to auto switch to either 120V 60 Hz or 240V 50Hz. The voltage range for 120V is 95V to 132V and for 240V is 195V to 255V. The rear heavy-duty AC receptacle will accept a universal grounded AC cord. Be sure to check your power source before plugging into a grounded (3 prong) outlet. Firmly push the AC cord all the way into the receptacle or the amp will not function.

WARNING: Never defeat the grounded connection or electrocution may result! The fuse is located within the main chassis. Normally if the fuse fails, the amp will require service. The fuse value for the CARVIN DCM1000L is 10A (or 5A for 240V), Slow Blow. Each amp will require a dedicated circuit breaker for the amp to achieve its full output.

1) NO SOUND FROM CH 2: The rear (recessed) BRIDGE switch has been inadvertently pushed in.

2) STEREO CHANNELS SOUND THE SAME: The rear PARALLEL switch has been inadvertently pushed in.

3) NO HIGH FREQUENCIES: Tweeters or midrange drivers have been damaged or blown from feedback or to much power.

4) SYSTEM HUM: Switch the rear GND LIFT switch IN to reduce hum.

5) POOR SOUND (BASS): The speaker systems are wired out of phase to each other. To correct, check polarity and if necessary reverse the wires on one speaker connector only and your sound, especially the bass will improve.

6) DEDICATED CIRCUIT BREAKER: Each amp will require a dedicated circuit breaker for its full output. There will be a sustained loss of power if the AC voltage falls below the rated 120V or 230/240V input. Normally a 2000w amp or higher would require its own 20 amp circuit to deliver its full power at 2 ohms/channel or 4 ohms bridged.

1. Connect your Left signal source to the Channel 1 input (XLR or 1/4″).

2. Connect your Right signal source to the Channel 2 input (XLR or 1/4″).

3. Connect your Left speaker to the Channel 1 output.

4. Connect your Right speaker to the Channel 2 output.

5. Ensure the rear PARALLEL switch is in the OFF (OUT) position.

6. Ensure the rear BRIDGE switch is in the OFF (OUT) position.

Bi-amping must use an electronic crossover or speaker management system to separate high and low frequencies.

1. Connect the low-frequency output from your crossover to the Channel 1 input.

2. Connect the high-frequency output from your crossover to the Channel 2 input.

3. Connect your low-frequency speaker cabinet(s) to the Channel 1 output.

4. Connect your high-frequency speaker cabinet(s) to the Channel 2 output.

5. Ensure the rear PARALLEL switch is in the OFF (OUT) position.

6. Ensure the rear BRIDGE switch is in the OFF (OUT) position.

MODEL	DCM1000L
1 Channel RMS Continuous
8Ω (20-20k Hz, <1.0%)	210w
4Ω (20-20k Hz, <1.0%)	325w
2Ω (20-20k Hz, <1.0%)	520w
Both Channels RMS Continuous
8Ω (20-20k Hz, <1.0%)	200/200w
4Ω (20-20k Hz, <1.0%)	325/325w
2Ω (20-20k Hz, <1.0%)	500/500w
Bridged RMS Continuous
8Ω, (20-20k Hz, <1.0%)	650w
4Ω, (20-20k Hz, <1.0%)	1000w
Net Weight:	10 lbs (4.5kgs)
Topology:	CLASS D
THD	<0.1% at 50% power, <0.2% at 90% power
Power Supply:	Switchmode
Damping Factor:	>500
Sensitivity: (4Ω, Vms)	1.0 V
Signal to Noise Ratio:	above 106dB
Frequency Response:	+0/-3 db 20Hz – 20kHz
Input Impedance:	>20K Ω, balanced
Protection Circuits:	Short Circuit, No Load Protection, SpeakerGuard™, Thermal Shut-Off, Mute On/Off
Internal Fuse:	10A, 240V/5A
Dimensions:	2U rack units: 3 1/2″ High x 19″ Wide x 10.5″ Depth; 8.8 x 48.3 x 26.7cm