Anyone tested a Crestron Crestron AMP-2210T or AMP-3210T?

[champ222]

Specs seem fine:

Crestron AMP-2210 (2 channels)

	Typical of 2 mono amplifier channels:
	Input Signal Type	Balanced or unbalanced analog line-level
	Output Signal Types	4/8 Ohm, 70 Volt, or 100 Volt
	Output Power	120 Watts at 8 Ohms; 210 Watts at 4 Ohms; 420 Watts at 8 Ohms bridged; 120 Watts at 70 or 100 Volts (Transformer isolated)
	Damping Factor	>100
	Protection	Over Current, Over/Under Voltage, Over Temperature, DC Offset
	Frequency Response	20Hz to 20kHz ±0.5 dB at 4/8 Ohms; 80Hz to 20kHz +0/-3 dB at 70/100 Volts
	THD	0.05% @ 1kHz, full rated power at 4/8 Ohms, 8 Ohms Bridged, or 70/100 Volts; 0.1% @ 20Hz to 20kHz, 120W at 8 Ohms; 0.2% @ 20Hz to 20kHz, 210W at 4 Ohms; 0.1% @ 20Hz to 20kHz, 420W at 8 Ohms Bridged; 0.1% @ 80Hz to 20kHz, 120W at 70/100 Volts
	S/N Ratio	>103 dB, A-weighted
	Crosstalk	>70 dB @ 1kHz
	Gain	23 dB with INPUT LEVEL control set at 12 o'clock nominal position
	Input Sensitivity	2.22 Vrms for rated output power with INPUT LEVEL control set at 12 o'clock nominal position
	Input Detection Threshold	40 mV RMS @ 1 kHz
	Input Level Adjustment	±10 dB from nominal

[td]Audio[/td]

Crestron AMP-3210 (3 channels)

	Typical of 3 mono amplifier channels:
	Input Signal Type	Balanced or unbalanced analog line-level
	Output Signal Types	4/8 Ohm, 70 Volt, or 100 Volt
	Output Power	120 Watts at 8 Ohms; 210 Watts at 4 Ohms; 420 Watts at 8 Ohms bridged (channels 1 and 2); 120 Watts at 70 or 100 Volts (Transformer isolated)
	Damping Factor	>100
	Protection	Over Current, Over/Under Voltage, Over Temperature, DC Offset
	Frequency Response	20Hz to 20kHz ±0.5 dB at 4/8 Ohms; 80Hz to 20kHz +0/-3 dB at 70/100 Volts
	THD	0.05% @ 1kHz, full rated power at 4/8 Ohms, 8 Ohms Bridged, or 70/100 Volts; 0.1% @ 20Hz to 20kHz, 120W at 8 Ohms; 0.2% @ 20Hz to 20kHz, 210W at 4 Ohms; 0.1% @ 20Hz to 20kHz, 420W at 8 Ohms Bridged; 0.1% @ 80Hz to 20kHz, 120W at 70/100 Volts
	S/N Ratio	>103 dB, A-weighted
	Crosstalk	>70 dB @ 1kHz
	Gain	23 dB with INPUT LEVEL control set at 12 o'clock nominal position
	Input Sensitivity	2.22 Vrms for rated output power with INPUT LEVEL control set at 12 o'clock nominal position
	Input Detection Threshold	40 mV RMS @ 1 kHz
	Input Level Adjustment	±10 dB from nominal

[td]Audio[/td]

The Extron XPA 1002 is a similar sort of thing and tested well.

Could potentially work for Front L&R with a Marantz Cinema 70s (L&R&C for the three channel)

Thanks

 

[charlielaub]

I have not tested ASR style but I definitely have used several amps from this series for multi-way active loudspeaker projects. The amps are pretty good sounding, but I cannot say how they measure. You can see the specs for yourself above - just a decent class-D amp overall. I think I own about 10 of them, since I could buy them super cheap on Ebay, used. They are pretty heavy because there is a large transformer inside to generate the 70V rail.

I have also used the Extron amps. I own a couple of the 4-channel 200W version and also the 400W 2-channels version as well. They don't quite sound as good as the Crestron amps to my ears. Would be totally fine for woofer channel duty.

 

[champ222]

Thanks

Worth a try i think at the prices they go for on ebay.

Have you ever ran them vertically? ie, mounted on a wall or rear of a cabinet? they are passively cooled and designed to fit in a rack, horizontally, so wonder if there would be overheating issues vertically

 

[charlielaub]

A vertical orientation would probable OK. They do not get all that hot. If you can keep all sides of the case open to air (e.g. do not mount directly against a cabinet but allow for 1" air gap in between) all the better.

 

[champ222]

Ok cool Thanks. It seems the 3210/2210 "S" models arent as deep as the "T" models. The dont appear to have the 70V/100V option, so perhaps that is why. The deeper "T" versions would sit nicely under an AV amp. the S models would be a bit shallow, but easier to hide away.