2. amps-preamps
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Tube amp, size and power info........

I am geting a new pair of speakers wich are 99db efficient with a plate amp for the woofer, I have a tube pre but now I can entertain tube power but I want a reasonable price to try and also it needs to fit in a standard rack space (6.5 inches) I would say that anything above 25 watts will do, my pre-amp is a Sonic Frontiers and my usual volume is low to moderate, never obnoxiuosly loud, what are some options that wont break the bank, I know it isnt much but I am talking around $500 new or used.
Thank you as always Chad
chadnliz
brainwater
520 posts
 
You mentioned rack space. Tubes get hot and need to breathe , do not crowd them in a tiggt rack withiout 5 inches of space above .
bignerd100
515 posts
 
Agree with Brainwater. Put tubes in a rack and you can bake cookies just like EZ-Bake Ovens. Plus most tube gear is not rack-mountable.

Used AR amps come to mind if you are using the DB99's from Von Schwiekert.

Good luck!
tafka_steve
115 posts
 
It occurred to me that Ty may be building you a 4 ohm loudspeaker. If the dual 10" midwoofers are run in parallel, then it will likely be a 4 ohm (or below) load. In that case, 99 dB efficient at 4 ohms is equivalent to 96 dB efficient at 8 ohms. An 8 wpc 300B SET amp may not be enough in this situation.

For something cheaper than $500, you might consider a Dynaco ST70 (lots of them on the market, lots of tweaks/mods).
tafka_steve
115 posts
 
Heck, there's an AR ST-70 C3 listed for $425 at Audio Asylum's Classifieds right now (it ain't my ad, 'goners). That was the first Audio Research amplifier: a modified Dynaco ST-70. Ahh, if I only kept my Paoli monoblocks...those were the days.
chadnliz OP
3,736 posts
 
Hey everyone thanks for the info, the speakers are going to be built by Tyler Accoustics, though a model is not yet nameable.
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