[UKToecutter]

Incidently.
They have a minimum order value of £30 so it's more economical to buy 3 of at £11.20 each +VAT +Del.
I don't know where you are, so I have no idea how much delivery will be to you.

Andy

 

[johnwmclean]

K3cT, Richard’s transformers are still relatively cheap, if it was not for the shipping cost.
I have two spare Avel Lindbergs (Y23605’s 100VA +/30V)... Let me know!

Edit: shoot me a pm...

 

[johnwmclean]

OOps

 

[K3cT]

@UKToecutter
I'm located straight in the heart of Asia in Jakarta, Indonesia. Thanks for the site, I'm going to ask whether they ship internationally or not.

@johnwmclean
You've got a PM. Thanks for your help also, John.

 

[kunalraiker]

Quote:

Originally Posted by fault151 /img/forum/go_quote.gif Hi guys, I finally got round to taking some pics of my B22 amp. It has taken me over a year to get to this point and I thought i'd share my hard work with you all. First of all, a [size=x-large]MASSIVE[/size] thank you to everyone who has helped me with this project especially, Ti (AMB LAbs), MR Majestic, and johnwmclean. I would not have been able to do it without your help and patience! The amp sounds bloody amazing, really happy with it. Its safe to say its not the easiest amp I have ever built, there is a lot that can go wrong (and did go wrong!) but got there in the end. I will be adding some more pics for those interested on the post pics thread (I didn't want to clutter this thread too much).

That is one nice amp, such neat work mate

,i'am stunned with the way you've done it.
what did it cost you, also who designed your case.

 

[fault151]

Hi, thanks for the nice comments. I designed the panels and had them made at FPE. The chassis was from HIFI 2000.

I'm not sure exactly how much it all cost me, but i can tell you it wasn't cheap! I tried to build the best i could.

 

[LeMat]

IMPRESSIVE work here !!! Congrats

Quick question on the e24 power switch circuit.
I finished mine but something is bugging me. I have to keep the button pressed for nearly 2sec then release to power on the amp.
On the other side, to power it off, it's immediate.
Any idea on how I can make it more responsive ?

Thanks !

 

[cAsE sEnSiTiVe]

Fault...

That is one gorgeous β22. Congrats on the build!

 

[Iniamyen]

Fault151, as if my build didn't already look like crap, you had to add salt to the wound

Definitely one of the sexiest builds out there...

 

[amb]

Quote:

Originally Posted by LeMat /img/forum/go_quote.gif Quick question on the e24 power switch circuit. I finished mine but something is bugging me. I have to keep the button pressed for nearly 2sec then release to power on the amp. On the other side, to power it off, it's immediate. Any idea on how I can make it more responsive ?

It shouldn't behave that way... Did you use the correct value Rs and Cs?

 

[johnwmclean]

Just thought I’d check this out before disaster...
With a dual σ22 psu can I connect both the ground outputs together to form part of a star ground scheme within another chassis?

 

[aloksatoor]

Would that be really an isolated dual mono supply then? I think not though I might be wrong

 

[johnwmclean]

Well no aloksatoor it won’t a “pure” dual mono in the true sense of the meaning. But I need to wire two σ22’s to a single star ground scheme.
Here is a schematic I’m following for reference.

 

[amb]

johnwmclean, the diagram above shows only one σ22, but if you are building a variation that uses two σ22s (one per two amp boards), then yes, you can connect their respective G pads to a common star ground point (see my β24 PSU wiring scheme below as an example). My diagram shows the G on the "input" side of the σ22s being used for star-grounding, but you could do it on the "output side" just as well. They are all connected to the board's ground plane.

The V+ and V- outputs from the two σ22s cannot be tied together, but I hope that's obvious.

 

[johnwmclean]

Thanks AMB, that is what I assumed - glad to get confirmation. I knew connecting the -V and +V outputs from two supplies = fireworks.