RE: Damping

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RE: Damping

Posted by Davey on June 28, 2020 at 10:16:55

In Reply to: Damping posted by neolith on June 27, 2020 at 19:16:59:

The output impedance of a tube amp is not 4,8.16 depending upon the settings. :) Those are just transformer taps. The actual output impedance is lower than those numbers.

Using an amplifier with significant output impedance, it's definitely possible to skew speaker frequency response looking into a varying impedance load of many loudspeakers.

The traditional way of defining "damping factor" was to include the speakers DC resistance in the denominator of the calculation. Thus you had a lower number than a simple speaker-impedance divided by amp output resistance calculation.
DF = Speaker impedance / (Amp output impedance + Speaker DC resistance)

Dave.

http://diyaudioprojects.com/Technical/Papers/Damping-Damping (Open in New Window)

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Follow Ups Full Thread

Topic - Tube vs. Solid State for Planars - Taki888 10:30:22 06/27/20 (17)

RE: Tube vs. Solid State for Planars - Mike K 10:49:42 06/28/20 (6)

RE: Tube vs. Solid State for Planars - Norman M 11:20:51 06/28/20 (5)

RE: Tube vs. Solid State for Planars - Mike K 17:27:02 06/28/20 (4)

RE: Tube vs. Solid State for Planars - Norman M 18:34:17 06/28/20 (3)

RE: Tube vs. Solid State for Planars - Taki888 19:29:24 06/28/20 (2)

RE: Tube vs. Solid State for Planars - FX35 15:56:32 06/29/20 (0)

RE: Tube vs. Solid State for Planars - Norman M 08:14:04 06/29/20 (0)

RE: Tube vs. Solid State for Planars - Norman M 06:29:16 06/28/20 (1)

Loved the Mag-Tech amp with my Maggies, but... - CometCKO 11:41:52 06/29/20 (0)

Damping - neolith 19:16:59 06/27/20 (4)

RE: Damping - Davey 10:16:55 06/28/20 (2)

RE: Damping - neolith 10:50:13 06/29/20 (1)

RE: Damping - Davey 18:55:43 06/29/20 (0)

RE: Damping - pictureguy 20:14:45 06/27/20 (0)

RE: Tube vs. Solid State for Planars - FX35 18:33:57 06/27/20 (0)

RE: Tube vs. Solid State for Planars - Green Lantern 15:03:24 06/27/20 (1)

RE: Tube vs. Solid State for Planars - Green Lantern 17:50:20 06/27/20 (0)

Follow Ups

RE: Damping - Davey 10:16:55 06/28/20 (2)

RE: Damping - neolith 10:50:13 06/29/20 (1)

RE: Damping - Davey 18:55:43 06/29/20 (0)

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