FWIW and years later. . .
I have an Aleph 5 which I purchased to drive some now "set-aside" speakers. I purchased for the third time a pair of Wilson Watt/Puppy 5 speakers (can't seem to find anything I like better long term).
While the W/P 5 are not quite as inefficient as the Thiel speakers in general, the WP's are still a demanding load (ignore their efficiency rating of 94db) as they make wide swings from about 1.5 ohms and up.
The Aleph 5 (stereo amp, 60 WPC) sounds very nice with these speakers for my listening habits, room and volume levels. However, I was recently auditioning a Gamut preamp in my system and found that when I turned the volume up well past my normal "loud" listening levels, the soundfield congested.
I suspect this was mostly caused by a combination of my room and the available power from the Aleph 5 amp (I think it just ran out of juice). Now this being said, this was a listening level well beyond what I would ever sit and listen to for any length of time.
The Aleph 5 is rated at 60 watts class A. I don't know what it really puts out. Nelson is pretty conservative with his ratings. I also don't recall what this amp does in 4 vs. 8 ohm conditions.
I have an Aleph 5 which I purchased to drive some now "set-aside" speakers. I purchased for the third time a pair of Wilson Watt/Puppy 5 speakers (can't seem to find anything I like better long term).
While the W/P 5 are not quite as inefficient as the Thiel speakers in general, the WP's are still a demanding load (ignore their efficiency rating of 94db) as they make wide swings from about 1.5 ohms and up.
The Aleph 5 (stereo amp, 60 WPC) sounds very nice with these speakers for my listening habits, room and volume levels. However, I was recently auditioning a Gamut preamp in my system and found that when I turned the volume up well past my normal "loud" listening levels, the soundfield congested.
I suspect this was mostly caused by a combination of my room and the available power from the Aleph 5 amp (I think it just ran out of juice). Now this being said, this was a listening level well beyond what I would ever sit and listen to for any length of time.
The Aleph 5 is rated at 60 watts class A. I don't know what it really puts out. Nelson is pretty conservative with his ratings. I also don't recall what this amp does in 4 vs. 8 ohm conditions.