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In Reply to: Class A power in A/B amp question posted by George6 on March 9, 2019 at 18:23:50:
Solid state power amplifiers are actually voltage amplifiers because the voltage at their speaker terminals remains constant regardless of speaker load. Therefore, if an amplifier's voltage remains constant under full power with either a 4-ohm or 8-ohm speaker, its voltage for any lower power output will also remain constant.
Power = (voltage)2 / resistance
Therefore:
200 = 402 / 8
and
400 = 402 / 4
and
4 = 5.6572 / 8
and
8 = 5.6572 / 4
Yes, Class A power will also double when resistance is halved.
Best regards,
John Elison
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Follow Ups
- RE: Class A power in A/B amp question - John Elison 18:54:45 03/09/19 (5)
- RE: Class A power in A/B amp question - triamp 19:19:57 03/10/19 (1)
- RE: Class A power in A/B amp question - John Elison 06:36:30 03/11/19 (0)
- RE: Class A power in A/B amp question - 6bq5 12:07:49 03/10/19 (2)
- RE: Class A power in A/B amp question - Hornlover 08:24:06 03/11/19 (0)
- RE: Class A power in A/B amp question - John Elison 12:17:37 03/10/19 (0)
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