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Tube amplifier suggestion for 101 dB speakers

Hello All,

I've been using the Tyler Acoustics PD30s with Classé Sigma solid state preamp and amp combination.
These speakers have two 15" woofers and a horn tweeter, 4 ohm, sensitivity 101 dB.
The above combination is not the best, especially for complex rock music, the highs start to distort, they are harsh, just bad. Never had tube gears, but after reading a bit, these speakers apparently scream for tubes. Actually somebody brought over a hobbyist-made tube amp and yes, the speakers were tamed.
I'm willing to switch to a tube amp but prefer to keep the ss preamp.
Can anybody recommend a few good tube amp matches here, for a max of 3K new or used. Room is just a good medium size. I want something that I can keep for many years if possible and being somehow flexible to tube rolling.

Thanks.
128x128piramis
georgehifi's avatar
georgehifi
4,966 posts
 
piramis
  Tube amplifier suggestion for 101 dB speakers
Tyler Acoustics PD30
 
You've got good efficiency, so you don't need a lot of watts, 50 would do, but these speakers are spec'd by the manufacturer at 4ohms nominal, and you can bet they go down to 3 or maybe even 2ohms somewhere. So I would look at tube amps that have a 2ohm output tap as well as the normal 4 and 8.

 Roger Mojeski's Music Reference RM200 amp has this.
 http://www.ramlabs-musicreference.com/music_reference_rm-200_hybrid_power_tube_amplifer.html

Cheers George
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yogiboy's avatar
yogiboy
2,678 posts
 
These Quicksilver Mid Mono amps are perfect for tube rolling. You can get them new for 2 grand !
http://quicksilveraudio.com/products/midi-mono/

aberyclark
594 posts
 
I'm thinking of the Quicksilver Sixty Watt Mono's for my ZU Omen defs. The Quicksilvers look nice with the chrome chassis

http://quicksilveraudio.com/products/sixty-watt-mono-amp/
atmasphere's avatar
atmasphere
7,068 posts
 
Even if your speaker has a high efficiency, I do not recommend small power SET amplifier to drive two 15 inch drivers.
I can't imagine why.

My speakers are 98 dB with dual woofers. My preamp has a fair amount of output and in a pinch, I can use it to drive my speakers and it controls the 15" woofer just fine. An SET would do just as well; the big problem is 'will an SET have enough power?' and if a more powerful one that does more than 7 watts then the answer is 'most of the time'.

I prefer a bit more power; much depends on the distortion that the amp makes- if low in overall distortion (in particular the higher ordered harmonics) then it will be relaxed and you will very naturally use the extra power.
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