CARVIN ENGINEERING DATA
OPERATING MANUAL
The HD power amps deliver exceptional sound/reliability, ultra-light weight
9lb (4.1kg) and it’s made in the USA. You’ll appreciate the ultra-light feature,
which comes in part from its heavy-duty aluminum frame. High power, un-
compromised sound and maximum reliability is at its best for both touring
systems and fixed installations. The concert stage is the ultimate test of profes-
sional audio. Concert audio has to be uncompromising, reliable and efficient
and that’s where the HD performs night after night, year after year. The HD is an
American made workhorse backed by 40 years of manufacturing excellence.
HIGH POWER TOPOLOGY
The CLASS D topology features high current MOSFET output devices produce-
ing huge output currents when needed while delivering high slew rate perfor-
mance for crystal clear highs and chest pounding bass – every note is vibrant,
pure and natural. The HD’s headroom reveals its high dynamic power from
the Switchmode power supply that operates at 100,000 Hz. The high efficient
Switchmode supply is a league above toroids saving not only AC power from
the wall but reducing internal heat. The HD easily handles the most difficult
mismatched or reactive loads and is AC generator friendly. The soft-start gently
turns the HD on to prevent tripping AC breakers.
COOL EFFICIENT DESIGN
The Class D output design raises power amp efficiency to the xtreme. The high
efficiency heat transfer system offers the most advanced cooling. Together
these features are the keys to the HD high reliable power. The internal aluminum
heat sink is nearly running cool with just convection, but the added multi-speed
fan keeps it cool and runs quiet under 2 ohms loads in high power operation.
Air is pulled from the rear and exhausted to the front to keep the rear of your
rack cool.
FRONT PANELS & CONNECTING UP
The HD Series feature front panel signal ladder, peak, protect, and bridge LEDs
which let you monitor the status of the amp fast. Both channels use detente
level controls allowing you to see your settings at a glance. Balanced TRS & XLR
input connectors are used to eliminate hum & noise. Speaker outputs feature
heavy-duty binding posts, and combo Speakon™ and 1/4” jacks.
The rear professional accessory group offers a PARALLEL input switch connects
the inputs together eliminating Y cables for patching multiple amp systems. The
accessory group also features a BRIDGE MODE switch to deliver twice the power
into a “mono” load or a 70V distribution system, and a 100HZ 18DB/OCT LOW
PASS CROSSOVER switch for each channel for fast Subwoofer setups.
CONSTRUCTION
The HD construction starts with a heavy 2RU aluminum chassis. All printed circuit
cards are double-sided FR4 military-grade fire retardant with plated through holes
- soldered under, on top and through each component. SMT - surface mount
technology offers “shock-proof” protection. The CB and CE safety seal assure that
each HD meets strict standards for service anywhere in the world. Auto switches
from 120VAC 60Hz or 240VAC 50Hz - no manual switch to change.
HD POWER AMP SPECIFICATIONS:
MODEL HD1500
1 Channel RMS Continuous
8Ω (20-20k Hz, <1.0%) 350w
4Ω (20-20k Hz, <1.0%) 500w
2Ω (20-20k Hz, <1.0%) 800w
Both Channels RMS Continuous
8Ω (20-20k Hz, <1.0%) 300/300w
4Ω (20-20k Hz, <1.0%) 450/450w
2Ω (20-20k Hz, <1.0%) 750/750w
Bridged RMS Continuous
8Ω, (20-20k Hz, <1.0%) 900w
4Ω, (20-20k Hz, <1.0%) 1500w
All ratings EIA 1% THD at 1 kHz
Net Weight:
9 lbs (4.1kgs)
Topology: CLASS D
THD (20-20k Hz 50% power) 0.1%, (20-20k Hz 90% power) 0.2%
Power Supply: Switchmode
Damping Factor: >500
Slew Rate: bridged mode >50v/µs
Sensitivity: (4 ohm rated power) 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
Control/Indicators:
Front: Power switch • Recessed detente attenuators • Signal LED -30dB • 40% & 80% output LEDs • Clip LED
• Protect LED • Power LED • Bridge LED
Rear: Parallel Input Switch • Speaker Output Bridge Switch • Channel 1 and 2 100Hz crossover switches •
Input Connectors: Balanced XLR & 1/4” • Speaker Output Connectors: Dual heavy duty binding posts, two
Speakon™ & 1/4” combo connectors
Internal Fuse: SLOW BLOW HD1500: 10A,
Dimensions: 2U rack units: 3 1/2” High x 19” Wide x 10.5” Depth; 8.8 x 48.3 x 26.7cm
0111
RECEIVING INSPECTION—read before getting started
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.
USA customers register online at: www.carvin.com/registration
All other countries register online at: www.carvinworld.com/registration
HD1500
DCM2000L/DCM2500L/DCM3000L and DCM3800L minimum is 2 ohm per channel and 4 ohm bridged.
DCM1540L minimum is 4 ohms per channel and 8 ohms bridged.
HD1500
76-01600A 011111
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