Class D Amp For 'Stats?


For a number of reasons, I am considering the purchase of a Class D amp (or amps) to drive my Sound Lab A-1s. Most uses of such amps detailed here and elsewhere seem to have been with 'conventional' speakers, which obviously present very different impedance loads than a full range electrostatic (approximately 40 ohms in the bass, dropping to 2 ohms at the highest frequencies). I would be most interested to hear of members' experiences.
curriemt11

Showing 3 responses by unsound

Caveat, I have no business offering any advise here. I've never heard the Sound Labs. I've very little experience with digital amps. Many seem to think that the digital amps can be bright. I just wonder if the traditional Rowland house sound still exists in their digital offerings. A_rt of Analog Research Technologies has mentioned something about offering an option to customize the frequency response of his amps to match a given load. There may be options. Perhaps now that there are quite a few manufactureres offering digital amps we should start respecting them as individual products rather than lumping them by technology.
Eldartdford, I wonder if there might be more to it than that. My Thiels have a rather steady resistive lower impedance load, yet, I don't know of anyone touting these amps with those speakers. A_rt has suggested that these amps tend to get bright into lower impedances. We are all very much aware of Muralman1's enthusiam for his H2O's on his notoriously low impedance Appogge's. I suspect that Muralman1 might disagree with me here, but, my experience with the Appogges have demonstrated a distinctive downward sonic tilt (the opposite of my Thiels). This just might explain why he is experiencing such joyus synergy.
Muralman1, Distortion is distortion, whether it's tilting up, down, or elsewhere. Now if you find particular distortions either more or less objectionable, well, that's something else and all together more understandable. After all that's probably the basis that we all use to put our systems together in the first place. The point I was trying to make was that if digital amps are bright into low impedance loads then in your case it was unlikely to exacerbate the problem and could even help to neutralize one. It may just demonstrate that though opinons vary they may all be correct within given circumstances. It may be that digital amps like other technologies may be specificaly appropriate. Eldartford and A_rt may have identified specific attributes that currently may help in deciding whether or not this technology may be appropriate. Furthermore since this is a relatively new technonlogy we may not have seen all that digital amps have to offer. The future certainly looks interesting.