2. amps-preamps
  3. 195730-1475

Luxman L-550ax

Hi, 

I have just bought a Luxman L-550ax. I bought it for the reason of eventually relocating to a smaller place and need an all in one. Due to that relocation, I will eventually need to get bookshelf speakers. I've narrowed it down to the Ascilabs C6B. They are 85db at 4 ohm. Will the 550ax's 40w class A be able to drive them in no larger of a room than 15' x 20' ? 

Thanks for the help

enobenetto

Showing 2 responses by elliottbnewcombjr

elliottbnewcombjr
6,054 posts
 

I agree, get larger more efficient speakers for that room and Amp.

My beloved little Luxman SQ-N150 is rated at 10 wpc at 6 ohms, the goal is to keep the heat low so I can use tubes in my 10' x 10' x 8' high office, my 90 db AR-2ax’s sound great, but no way is 20 wpc enough for inefficient speakers and/or a larger space, certainly not for main system.

I would look for sensitivity of 92 or higher, and make sure the impedance curve does not have difficult dips. 

And, those ’nominal’ 4 ohm speakers dip to 2.6 ohm

  • Impedance: Nominal 4 Ohm (min 200Hz / 2.6 Ohm)
elliottbnewcombjr
6,054 posts
 

I looked all over hell, there isn’t a single bookcase speaker that I would choose over my AR-2ax’s, which are just shallow enough at 11-1/2" to fit: 

in a bookcase

on a bookcase

on a stand (see KLH photo below)

you can find restored by others, or restore them yourself like I did to my 2 pairs. everything needed is readily available.

https://www.hifishark.com/search?q=ar-2ax

3 way, 10" woofer, separate level controls for tweeter and mid to adjust in your space.

There is also the KLH-5 restored or sold new these days at Crutchfield ....

It comes with a single level control

 

Both +/- 90db sensitivity, nominal 8 or 6 ohms. Your 20wpc would definitely sound good, the eventual space will determine if you want to upgrade the amp’s power someday.

If you live close enough to 07062 we could hook up my AR-2ax’s at your place, or your amp at my place, better yet, both! 

 

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