I think you'll be fine. Luxman never posted the complete specs on the L-590 and L-550 amps. Their specs are on the Class A power alone, after that point they change to AB, and put out considerably more power.
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
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bojack, perhaps you’re correct, but that would seem unusual to me. The L-590AX is also advertised as Class A, 30W/ch into 8 ohms, but transitions out of Class A and produces around 90W/ch, 8 ohms, and something like 160W/ch into 4 ohms. I would expect the 550 to operate in a similar manner. https://www.luxman.cz/data/test/test-en-l590axii-hifinews.pdf |
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
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- 16 posts total