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Gamut M250 MK3

I got a pair of Gamut M250 Mk3 mono-blocks that went in place of a D200 mk3. They were installed yesterday, and worked fine for a day. This morning I turned on the amps to warm up. A bit later I went back to the listening room and heard a very loud hum. First I looked out the window for a garbage truck; then put my ears against the speakers. Nothing there. It was coming from the amps. Power-cycle of both amps confirmed that both were making that noise, though one was louder than the other. About 10 minutes later the noise was gone. I have a feeling that this might be one of those intermittent problems that's difficult to track down, but I do want to get to the bottom of it while they're in warranty. To other owners of the M250, have you ever experience such a problem?
ping2357
nico_g
35 posts
 
The nwer Pass amps have correct input impedance.
And my source has a very low output impedance : less than 50 Ohms.
samtse
49 posts
 
if you love PASS sound,just go ahead,trust your ears
ping2357 OP
10 posts
 
Hi Nico_g. Nothing wrong with PASS, but in my system, I just love the Gamut sound. I am using tube preamp with the Gamut. The PASS, even with paired with PASS pre-amp, sounded like ordinary electronics. Yes, the M250 is better than the D200 in all areas. The Strads have 2 12" woofers which need more power. I don't know anything about the Tannoy GRF. Like Samtse said, M250s are a keeper.
bvdiman
491 posts
 
Sorry to side track a bit.. but having owned the Strads previously, I believed those twin woofers are not 12". More like 10"s I think?
nico_g
35 posts
 
I like the GamuT a lot, but, you know, Pass is very good too : I talk about the Call A models like the XA100.5.
I'm sure that the Class AB designs like the X350.5 aren't as good with easy to drive speakers like mine.
The Tannoy GRF are 95db/W/m with 15" woofers and around 8 Ohms impedance.
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