Comments on: Beta 22 amplifier build

By: Bill Kilpatrick

Bill Kilpatrick — Tue, 26 May 2009 02:11:50 +0000

You’re a genius! Instead of making your B22 larger than life, you’ve reminded us all that what matters is what’s on the INSIDE. It’s all about the parts and how they function together. It’s all zen, baby. It’s all about harmony and love and inspiration.

You rock!

By: IC: My B22/Cmoy hybrid - Head-Fi: Covering Headphones, Earphones and Portable Audio

Tue, 26 May 2009 01:04:43 +0000

[...] IC: My B22/Cmoy hybrid Folks, I was going to convert my B22 into a balanced version, but now I’m thinking it would be better to just start fresh. In that case, I’d like to send my 3-channel beta to a good home. So I’m just seeing if anyone would be interested in this one-of-a-kind amp. Build pics here. The only difference compared to the last picture is that the wooden base is actually trimmed to size now. As for the parts, everything came from glass jar audio (default gain of except the cheapy speaker terminals and the switch that allows you to choose between the two sets of RCA inputs. The speaker terminals work fine and are connected with a zobel network as recommended. The RCA inputs both work fine too and comes in handy for switching between my gamma1 and my integrated amp. The build itself went great, no need to desolder or redo anything thanks to having all my questions answered by the generous people in this community. Anyway, let me know if you have any questions. I’m thinking I would let it go for $600 non-CC paypal CONUS including shipping (which will be substantial… this thing is big and heavy!) __________________ HP: Sennheiser HD 650, Grado SR-80 Portable: CMoyBB with bass boost knob (For sale, check for sale forums), Mini3, Ety ER6i, Head-direct RE2 DAC: Gamma1 Home: Beta 22/CMoy hybrid Sold: Millett Minimax, MMM/sigma 11 My feedback GA_googleFillSlot(“Pier39_728x90″); [...]

By: jason

jason — Fri, 03 Apr 2009 17:45:31 +0000

Good for you! Let me know how it turns out.

By: Michael Ting

Michael Ting — Fri, 03 Apr 2009 17:14:06 +0000

HI Jason, I think your using the cookie tin case for the b22 is the coolest case i’ve seen for the b22.. I really going to implement your idea onto my b22!!!

Thanks for the inspiration, dude!

By: jason

jason — Mon, 30 Mar 2009 15:22:58 +0000

Ed – If you like the cookie tin idea, it’s mostly a matter of finding one that fits that you like the looks of. If you happen to live near any asian markets, they seem to have lots of cookie tins available for you to choose from. I would say cookie tins are easier than a “real” enclosure because you can make cuts and holes with just a dremel vs. a drill press. But I would recommend you have a wood base or 1/4″ piece of aluminum or steel to kill any flex the tin might have otherwise. There are two caveats to this. First, if you think you really won’t ever move the tin much then it’s fine as is. Also, if you have the top on all the time with a few smallish vent holes to allow air flow, then the tin is much much stiffer than without the lid on. In that case, you might be able to get away with not having a base.

Otherwise, the tins work just fine and offer a unique and cheap solution to the dreaded case work. The one thing you might want to upgrade is to screw a piece of plastic (maybe 1/8″ thick or so) into the side with all the connections so you more evenly distribute the forces applied when you connect and disconnect your headphones, RCA plugs, etc.

Hope that helps. Let me know if you have any other questions.

By: Ed

Ed — Mon, 30 Mar 2009 09:41:55 +0000

what a great idea, thanks for the writeup – the baby pics were the icing on the cake. I’m also looking for an easy b22 enclosure – do you have any links or advice? (I can’t consult headwize because their forums are down). Thanks again!