RE: Gains

RE: Gains

Posted by neolith (A) on February 11, 2012 at 07:25:14

In Reply to: Gains posted by sbrians on February 10, 2012 at 23:26:15:

Basically, correct. Most units have gain controls to compensate when the amps have different gains. If you don't compensate then the balance of the amps will vary as you alter the input signal strength from the preamp.
Gain is not the same as sensitivity but the two are related and has nothing to do with the wpc. A lot of manufacturers report sensivity but may not specify gain. G = 20*log(Vo/Vi). Vo can be calculated from the power rating (maxium output before clipping) using P=IE and Ohm's law E=IR (or I=E/R) as SQRT(P*R) and Vi is the sensitivity, invariably reported at 8 ohms.
Since manufacturers often "cheat" when they report maximum power, the gains may still need some adjustment even if you have calculated the amps to have the same gain.

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Follow Ups Full Thread

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RE: Active Crossover Question for Maggie IIIas - neolith 15:11:19 02/13/12 (4)

RE: Active Crossover Question for Maggie IIIas - Norman M 08:15:08 02/15/12 (3)

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RE: Active Crossover Question for Maggie IIIas - Satie 22:31:43 02/16/12 (0)

Gains - sbrians 23:26:15 02/10/12 (3)

RE: Gains - neolith 07:25:14 02/11/12 (2)

RE: Gains - slbenz 10:05:01 02/11/12 (1)

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RE: Active Crossover Question for Maggie IIIas - slbenz 14:44:19 02/10/12 (2)

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RE: Similar Setup - slbenz 11:31:38 02/12/12 (0)

Going active will certainly "make a difference", IMO. But, as Roger said ... - andyr 13:34:29 02/10/12 (0)

RE: Active Crossover Question for Maggie IIIas - dumpingground 06:39:16 02/10/12 (0)

RE: Active Crossover Question for Maggie IIIas - Roger Gustavsson 02:28:05 02/10/12 (0)

Follow Ups

RE: Gains - neolith 07:25:14 02/11/12 (2)

RE: Gains - slbenz 10:05:01 02/11/12 (1)

Magnepan factory specs - neolith 20:20:08 02/11/12 (0)

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