Nice. I have a pair of monoblocks that are just sitting around waiting to be rebuil, and this seems like just the guide to help me do it.

Of course, I still have the rest of my house to rebuild….*sigh*

Posted at 11:42 pm on Sep 25th, 2006 by [C]arlos

Good to see another audio hack! Audio equipment always fascinates me… it is sort of an odd mixture of worlds.

Anyway, good article… though any article on DIY tubes really ought to have safety instructions included IMHO. I think what should be noted, though, is that lots of tube amp designs are pretty easy to build… I think doing one of these refurb jobs is probably MORE work than building one from scratch. What you really save in refurb is money… primarily on the iron and maybe the chassis, but it seems like a lot of work to go to when you include the time spent searching, experimenting, tracing wires etc. etc.

BTW, if you are looking for cheap tube amps there used to be a fly-weight kit that sold for $120 or so. I couldn’t find the link off hand but if anyone is interested I’ll dig deeper for it tomorrow.

Also, consider putting tubes on the pre-amplification side of the equation. That way your power (and thus expense and complexity) requirements are much lower but you still get that tubey sound. Plus then you can use solid-state for what it is great at, fairly efficient and clean amplification of signal.

Posted at 1:03 am on Sep 26th, 2006 by blip

thats a great idea blip, i love the distortion of a Tube amp, but only as an accent to the sound, it shouldn’t overpower the music itself.

Posted at 2:46 am on Sep 26th, 2006 by Monster

What a beautiful project!

If it sounds 1/3 as good as it looks after the refurb then you are doing just fine. Nice work!!

I know a couple guys who refurbish old shortwave radios and the procedures seem about the same.

I’m not even a tube enthusiast, but the projects make for some great reading.

Keep up the great work hack a day!

Posted at 6:51 am on Sep 26th, 2006 by strider_mt2k

Nice, but maybe an idea would be to post a site describing a home build simple valve amp?

Posted at 1:25 pm on Sep 26th, 2006 by stoned

Great post, but I was disapointed to not see any safty information.

-Joey

Posted at 1:36 pm on Sep 26th, 2006 by Joey

wow when i was young i had so many transformers (yes the electrical things not the toys) and i would just unwravel them..

now i realize my mistakes

ohwell

you can find them alot of places tho like old electronics you just want to make sure they are the right type for what you need i would guess?

Posted at 1:37 pm on Sep 26th, 2006 by g0d

@g0d: Pretty much everything wall powered and electrical contains a transformer, it’s getting the right type that counts ;)

I’ve never really bought in to the “tube sound” thing (I’m happy with accurate recronstruction thanks) but this is a very nice job. The chroming is great.

Posted at 7:17 pm on Sep 26th, 2006 by ex-parrot