nap90 in Mono?

Posted by: alan metcalf on 17 March 2003

Well ok not exactly mono, but can I use a single channel from a spare 90 to power a centre speaker? Will it remain stable even though one channel is redundant?
Cheers Alan.
Posted on: 17 March 2003 by Mr Underhill
Don't see why not. I've been using a 250 like this for over two years.

At one point I used a pair of 250s as mono-blocks.

Never had any complaints!
Posted on: 18 March 2003 by fatcat
Alan

Are you intending to use Naim pre amp, it is advisable to do so.

Fatcat
Posted on: 18 March 2003 by Stuart M
quote:
Are you intending to use Naim pre amp, it is advisable to do so.

Fatcat


Driving a pair of IBLs from a nap 140 from a Yamaha DSP-800 pre outs. (Made my own leads by hacking some old gray SNAICS).

Have had no problems with stability driving via the 120, 1 IBL as centre, 2 IBLs as centre (what I settled on), 2 IBLs as rear (good).

For best sound, I would guess an AV2 is the bizz, but the difference with the centre via a 140 over the DSP-800 doing the amplification is NICE (even with the NAD centre speaker).

Maybe the DSP-800 does not throw a load of unnecesarry ultra/infra sonic stuff at the amp (I could be wrong but this what naim amps have problems with - Admins can you help)

Checked with Naim for each step, and aiming for an AV2 but want to see what they will do with the video switcher before I take an expensive plunge.

For me the ideal I want is scart(RGB/S-video)/S-Video/Composite/PC in and RFB/S-Video/PC out no mater what source. Yes I could, in theory, do that now but not simply.

To err is human; to really foul it up requires a computer.
Posted on: 18 March 2003 by Stuart M
quote:
Are you intending to use Naim pre amp, it is advisable to do so.

Fatcat


Driving a pair of IBLs from a nap 140 from a Yamaha DSP-800 pre outs. (Made my own leads by hacking some old gray SNAICS).

Have had no problems with stability driving via the 140, 1 IBL as centre, 2 IBLs as centre (what I settled on), 2 IBLs as rear (good).

For best sound, I would guess an AV2 is the bizz, but the difference with the centre via a 140 over the DSP-800 doing the amplification is NICE (even with the NAD centre speaker).

Maybe the DSP-800 does not throw a load of unnecesarry ultra/infra sonic stuff at the amp (I could be wrong but I believe this is what Naim amps have problems with - Admins can you help)

Checked with Naim for each step, and aiming for an AV2 but want to see what they will do with the video switcher before I take an expensive plunge.

For me the ideal I want is scart(RGB/S-video)/S-Video/Composite/PC in and RFB/S-Video/PC out no mater what source. Yes I could, in theory, do that now but not simply.


To err is human; to really foul it up requires a computer.
Posted on: 19 March 2003 by Mr Underhill
I'd second Stuart's comment - although he seams to have done so himself!

I've used Yamaha and Parasound as pre-amps, with no ill effects.

That said when I moved to an AV2 everything knitted together very nicely