Crown CDi 1000 Two Channel Amplifier - 500W!!

Free Shipping on *ALL* Electronics (Excluding Speakers, Contiguous 48 US States Only)

General:
The CDi Series amplifiers are professional tools designed and built for installed sound applications. The series includes four models which are identical except for output power: CDi 1000, CDi 2000, CDi 4000, and CDi 6000. All are rugged and lightweight, and offer unmatched value in their class.

- Extremely versatile; rated for 2, 4, and 8-ohm loads and 70V and 140V outputs.
- Switch-mode universal power supply.
- Intuitive front-panel LCD screen for quick, easy configuration.
- Onboard digital signal processing includes crossovers, EQ filters, delay, and output limiting.
- Up to 20 user defined DSP presets are available.

This Crown amp comes with its original manual.

SkyFi Cosmetic Notes:
One small scratch in the paint on front, some scuffs on the top of the unit.

Crown CDi DSP Configuration Video from their YouTube channel:

Ownership:
Single Owner

Connections:
Left and Right Speaker Outputs. Phoenix connectors required and included (see our listing photos).

General Sound:
Neutral sound with little to no coloration

Cosmetic Condition:
8/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top. See our detailed rating description here.

Working Condition:
Working perfectly and tested in our lab and listening room.

Included:
Exactly as pictured and described above.

Packing:
Will be packed using our highly developed in-house process and custom packing materials.Specs:
Channels: 2
Sensitivity: (for full rated power at 8 ohms) 1.4V
Rated Power Output: (per channel @ 4 ohms) 500W
Stereo Signal to Noise Ratio (below rated 1 kHz power at 8 ohms): 100 dB (A-weighted)
THD: <0.5%
Damping Factor: (20 Hz to 400 Hz) > 500
Frequency Response: (at 1W, 20 Hz - 20 kHz)+ 0 dB, -1 dB
Crosstalk (below rated power): 20 Hz to 1 kHz- >70 dB
Input Impedance (nominal): 20k ohms balanced, 10k ohms unbalanced
IEC Power Connector: 15A

Dimensions:
3.5" x 19" x 12.25"

Weight:
22 lbs.

Approximate Age:
2010

Link to Manual:
Click Here

Recommended Cables:
Kimber Kable - Speaker Cables - Better

Kimber Kable - Power Cords - Better

Testing Process:
We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR.

If the amplifier passes visual inspection, we move on to a controlled power on sequence using a Sencore safety analyzer to monitor current draw in real time. Once the amplifier is determined to be safe to operate, we connect it to full AC mains for function and power testing. We connect the speaker outputs of the amplifier to a Sencore PA81 Power Analyzer which acts as a dummy load, DC offset monitor, and oscilloscope interface. We start with a low level 1 KHz test signal at the amplifier's input and slowly increase its amplitude while monitoring the output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping.

At this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. If the device under test has both balanced and single ended inputs they are both tested at this time.

We finish off the bench evaluation with a 1 KHz square wave check and a 20 Hz to 20 KHz sine sweep to assess the amplifier's frequency response characteristics.

This battery of tests will usually reveal if the amplifier has any issues that need further attention.

Before the device leaves the bench, we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics.

If the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours minimum. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when the unit has fully come up to temperature.