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Amplifier for Jordan JX92S Transmission Lines

I'm building a pair of transmission line Jordan JX92S speakers, and would like some advice on a complementary amplifier. They are not super efficient but not bad either (mid to high 80's)... a lot of people have used gainclone amplifiers with them in the past. (Is that the same as a Class D amplifier? If so, they have continued to progress).

I'd either like an integrated amp or I can hide the amplifier under my bed (it's for a bedroom system) and just have a small preamp showing. I was thinking maybe Naim, Portal Panache (I like this option because of good headphone circuit). Any other ideas?

Thanks, Peter
peter_s
hoggshead
80 posts
 
There's quite a few audiophiles using LM3886 chip amps. Here's an example on Ebay:
http://cgi.ebay.com/Dynaco-Retro-LM3886-Chip-Amp-Gainclone-/110595364524?pt=Vintage_Electronics_R2&hash=item19bfff56ac#ht_2449wt_690

Talk to Ronnie Thackery at Carolina Audio for advice.

Jim
peter_s OP
1,335 posts
 
Thanks Jim. Is that considered a Class D amplifier? I've got the following amp already at home, built by Tim Rawsone:

"Built with the 'AD' version of the Hypex ucd180 module. A fast, rich open sound, with no grain or midrange glare. The power supply uses 4 x 15000uf panasonics. The toroid transformer is 500va 34-0-34 -- or 45 volt rails."

Would listening to this amp give me some sense of what the LM3886 chips might sound like?

Thanks, Peter
hoggshead
80 posts
 
No it's not a class D amp. It's a class A/B amp on a chip. Check-out http://www.audiosector.com or http:www.chipamp.com for more information on this genre of amps. Here's a link to the National Semiconductor page for one of the common chips used.

http://www.national.com/mpf/LM/LM3886.html#Overview

Jim
peter_s OP
1,335 posts
 
Thanks, I'll give one a try - likely wait until one comes up used. BTW - do they have any propensity towards humming? I would likely leave it on 24/7, and wouldn't want an amplifier that would impart noise to the bedroom environment.
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