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Class D with high efficiency speakers

I'm currently running PS Audio BHK Pre / Atma-Sphere S30 Mk3 OTL into Avantgarde Duo Omega horns (107dB/W 16ohms). I've been very happy with the sound of the OTL's the past 12 years and since retiring have been listening to my system throughout the day as well as evening. This is obviously impacting valve life (although Atma-Sphere amps seem very kind on valves) and my electricity bill.

I'm therefore keen to explore whether any of the new Class D amps would be a suitable match in my system.

I've seen a lot of reviews where Class D amps are feeding low efficiency / low impedance speakers and I can see the benefit of their ability to supply current etc.

My question is, does anyone have any experience of running a new Class D GaNFET amp into high efficiency / high impedance speakers?

rocketiii
jaymark's avatar
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jaymark
512 posts
 

I ran the LSA Voyager GAN class D amp into Spatial X3 high efficiency speakers.  This pairing sounded great.  The top end extension may be a tad better than the superb Coda#16 class A amp that replaced it.  However, the midbass and low end was not as good as the Coda.  

fatdaddy2
387 posts
 

Duos with class D? But...why?

rmdmoore
163 posts
 

I know your question was about Class D but with the efficiency of your speakers you can get away with very little wattage, either tube or solid state. Have cou considered a very low wattage tube amp, like 5 watts or less? Alternatively, maybe a firstwatt from Pass? I'm about to try some MA-1 amps from Atma-sphere but part of the issue is that to do that transformer less you need A LOT of tubes which makes tons of heat. A 300b or 845 amp will run significantly cooler. Just a thought 

daledeee1's avatar
daledeee1
570 posts
 

Take a right turn.  Try a Pass XA25.  I will never sell mine!

I know, it is Class A.  I have left it on for days and didn't notice any electricity use increase.  Class D will be detailed but so is this one.  This unit is single ended only, no balanced output.  It is very quiet(S/N).  A demo from Reno HiFi would be about $4k.

tweak1
3,667 posts
 

@jaymark 

Is your Voyager stock?

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