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Summary of Contents for Chord SPA Series
- Page 2 UNLESS YOU ARE TECHNICALLY QUALIFIED TO DO SO. Installation The Chord Professional Systems SPA range are either 2U or 3U high units and may be fitted to a standard bay with four M6 bolts via its front panel. The unit should be positioned to allow free flow of air above and below.
- Page 3 SPA Range Rear Panels. SPA 1032, SPA 1232, SPA 2232 Power Amplifiers; SPA 1424 Power Amplifier; SPA 608, SPA 612 Power Amplifiers;...
- Page 4 Description and Operation This amplifier is of advanced design utilising a high frequency power supply. All units are fitted with 300-watt silicon (Mosfet) devices designed exclusively for Chord Electronics Limited. All amplifier channels have 30 Amp, Gold Plated 4mm output terminals. Each set is connected to the amplifiers via independent relays for redundancy.
- Page 5 Signal Detect LED Indication (SPA 1232, SPA 2232) Located just above the two volume potentiometers on the front panel, the SPA 1232, and SPA 2232 has two two-colour LED’s for signal detect and onset of clip indication. They will give a green indication if an input signal of greater than 20mV is applied to the input channel.
- Page 6 SPA 1032 – High Power Stereo Amplifier SPA 1232, SPA 2232 – High Power Stereo Amplifier SPA 1424 – High Power Mono Amplifier...
- Page 7 SIMPLIFIED TEST PROCEDURE FOR THE SPA RANGE OF AMPLIFIERS INITIAL PREPARATION Chord Electronics Limited recommends that the power supply be treated as a line replaceable unit because of its specialisation. However, it can be maintained by a competent engineering organisation. The following equipment must be available: - i.
- Page 8 NOTE Take care when using the scope not to connect the earth of the probe to any PSU component. 6. Check the frequency of the PSU oscillator by holding the scope probe close to either of the small transformers T2 or T3. The frequency should be between 75 - 80 KHz. 7.
- Page 9 POWER LED changes colour from green through yellow to red 3. Remove the short-circuit, release the power button, wait at least 30 seconds before re-applying power. The unit should power-up as normal. Chord SPA range output voltage clip level under load conditions. SPA608 SPA612 SPA1032 SPA1232 SPA1424 Load Voltage >32v...
- Page 10 Chord Professional Systems TECHNICAL INFORMATION SPA608 SPA612 SPA1032 SPA1232 SPA2232 SPA1424 OUTPUT POWER into 8Ω Continuous 120W rms 350W rms 330W rms 330W rms 480W rms 550W rms OUTPUT POWER into 4Ω Continuous 170W rms 550W rms 350W rms 550W rms...
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