Help, does anyone know the bias setting and where to take the measurements from for the MF P140 power amplifier?
Cheers.
I ran a pair of these some years ago into my then Impulse H2s.
Nice amplifiers IMO and I think the power amp section of the integrated B200, which is also a nice amp with iconic A1 styling.
The power amp design is simple and unique but works surprisingly effectively.
It looks like a TdP back of a fag packet design....'here you go <scrible scrible> this should work'
If your preamp can drive long interconnects okay, mount the power amps vertically behind the speakers for better convection ventilation, maybe?Hmm. Since the heatsink is on top, you can't stack a pair of PXXX amps. They're already prone to over heating. I suppose since they would be mono-blocks, I could "floor mount" them near the speakers.
Is the P170 in the same league ?Very good amps (will thrash Quad 405 etc etc, Better than most Naim amps and better than eg Exposure VIII). P150 basically the same but had a mod to remove the background hiss which is present with the P140 (unlikely to be objectionable unless >100dB/W speakers).
As with pretty much any amp of such age, will need a complete rebuild now.
Best used in pairs with channels paralleled (NOT bridged! Which seems to be what many think goes on with these and other similar MF amps).
I have mods which can transform these to another level but very expensive.
I can't fit in any such work at the moment.
Is the P170 in the same league ?
Hi there, I am resuming this post as I just purchased a second P140 for my kitchen setup and I was curious how to connect both the amps to the 3a preamp in parallel mode.
I assume the "mono" button won't do the job so easily. Right?
cheers,