M60 Output Impedance with fewer output tubes

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I am planning to build a single driver full range speaker using a Fostex FE164. I will be using a pair of REL Strata III subs which have a max crossover frequency of 95 Hz. Since the Fostex driver has a sensitivity of 92 dB/1w/1m, I would like to use 4 output tubes in my M60s instead of 8 per chassis.
I am modeling the response of this driver in various enclosures, and it would help to know the output impedance of the M60 Mk. 2 with four 6AS7G output tubes instead of eight. From earlier posts, it appears that the normal output impedance value is 3.5 ohms.
My question is: Would this value rise to >3.5 ohms or fall to <3.5 ohms with 4 output tubes instead of 8?
Many thanks!
Jerry Seigel

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Topic - M60 Output Impedance with fewer output tubes - JerryS 16:28:44 08/22/01 (2)

Re: M60 Output Impedance with fewer output tubes - Paul Speltz 08:27:53 08/23/01 (1)

Thanks! - JerryS 14:48:47 08/23/01 (0)

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