UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

mhennessy · 15th Dec 2008, 4:50 pm

Hi Kat,

Good news - glad it's working again. I'm not surprised at the THD results - none of MF's amps from this era were particularly clean, but the unusual circuit layouts resulted in a particular spread of harmonics that gave a "nice" sound - which I suppose is important if you want to stand out from the crowd. Certainly, my A1 was highly enjoyable with efficient speakers...

Spotted in your earlier post that some devices were labelled "A1000N" - that's the re-labelling that I mentioned before. For the A1, the 2N3055s became "A1N" and the MJ2955s were "A1P". IIRC, the A1000Ns ended up in the A100 amp, but again, they were just 2N3055's.

And I also appreciated your X-Y setup - very neat!

Best regards,

Mark

15th Dec 2008, 4:50 pm	#8
mhennessy Dekatron Join Date: Jul 2007 Location: Evesham, Worcestershire, UK. Posts: 4,244	Re: Musical Fidelity B1 Hi Kat, Good news - glad it's working again. I'm not surprised at the THD results - none of MF's amps from this era were particularly clean, but the unusual circuit layouts resulted in a particular spread of harmonics that gave a "nice" sound - which I suppose is important if you want to stand out from the crowd. Certainly, my A1 was highly enjoyable with efficient speakers... Spotted in your earlier post that some devices were labelled "A1000N" - that's the re-labelling that I mentioned before. For the A1, the 2N3055s became "A1N" and the MJ2955s were "A1P". IIRC, the A1000Ns ended up in the A100 amp, but again, they were just 2N3055's. And I also appreciated your X-Y setup - very neat! Best regards, Mark