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This amp is the Alesis RA500 Amplifier.
Ive had it for quite some time as a home DJ setup and it has been successfully used at a number of parties aswell. It still works but has an intermittent fault where the speaker output just stops until the amp is tapped lightly which gets it going again. I have just taken it apart to try and find the problem and fix it for sale (as I have some active monitors now) and there was a lot of dust in there which I have cleaned out, it seems to be working and has a decent output from both channels, but it is unknown as to wether or not the random fault is still there. This could be of good use in home setups or to someone who knows how to fix these.I also have a very used Technics SL1200 (For Spares and Repairs) for sale (until 27/07) if interested in that aswell.
Here are the amplifier specifications.Size 18.9″ W x 5.63″ H x 10.71″ D (480mm x 143 mm x 272 mm) Rack units 3 RU height Weight 28.5lbs = 13.0Kg Rated output, per channel 4 ohms @ 1kHz, .02% THD+N 250 watts RMS per channel 8 ohms @ 1kHz, .05% THD+N 150 watts RMS per channel 8 ohms, bridged mono mode 500 watts RMS Signal to Noise Ratio 105dB, 22Hz-22kHz bandwidth referenced to rated output Frequency Response 10Hz 70kHz +0, -3dB Damping Factor 200 Slew Rate 60 V/s (two channel), 120 V/s (bridged mono) Input Sensitivity +4dBu (1.23 V) for rated output with input control at maximum Maximum input level +26 dBu Input impedance 20k O, balanced, 10 kO unbalanced Crosstalk -85dB, 1kHz All measurements done over a 20Hz-22,000Hz range with 1KHz sine wave at Full Scale, except for the dynamic range which was done with a -60dBFS 1KHz sine wave.
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Category: Sound and Vision:Home Audio and HiFi Separates:Amplifiers and Pre-Amps
Location: Wigan