kevin gilmore
Member
- Joined
- Feb 29, 2020
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armir's srm-007 is a rev 0 unit (3 stax jacks on the front panel) AC filament. But that also means its a minimum of 25 years old.
If it has never been serviced, then highly likely that the power electrolytics are in serious trouble. I would think that would show up
as 60 and 120hz bumps in the spectrum. large bumps. The rating of this amplifier is 1350Vpp. If the 100k load (200k balanced) did nothing
additional bad to this amp, it would bring that rating down to 800Vpp. No one certainly tests dynamic amplifiers this hard.
marantz 8b is a very nice sounding push pull amplifier with transformer output. many transformer output amps don't like driving another transformer directly. meaning an amp like this with a srd7 is a bad idea.
Very few amplifier/srd7 combinations are going to be able to achieve .00x thd. Actually none that i can think of.
If it has never been serviced, then highly likely that the power electrolytics are in serious trouble. I would think that would show up
as 60 and 120hz bumps in the spectrum. large bumps. The rating of this amplifier is 1350Vpp. If the 100k load (200k balanced) did nothing
additional bad to this amp, it would bring that rating down to 800Vpp. No one certainly tests dynamic amplifiers this hard.
marantz 8b is a very nice sounding push pull amplifier with transformer output. many transformer output amps don't like driving another transformer directly. meaning an amp like this with a srd7 is a bad idea.
Very few amplifier/srd7 combinations are going to be able to achieve .00x thd. Actually none that i can think of.