LA3A 500 BUILD
« on: January 13, 2011, 08:10:44 AM »
Let's get started with a BOM.

http://lazpro.com/LA3ABOM.xls

WARNING... THIS THING CAN PACK A HIGH VOLTAGE PUNCH... TRUST ME.


Consider yourselves warned.
« Last Edit: February 13, 2011, 08:21:27 AM by peter purpose »
http://www.lazpro.com
I reserve the right to not sell to idiots


haima

Re: LA3A 500 BUILD
« Reply #1 on: January 13, 2011, 10:50:42 AM »
thanks pete!

dmp

Re: LA3A 500 BUILD
« Reply #2 on: February 09, 2011, 01:56:46 PM »
I just called the supplier about the LSI 37721-1, pricing is $82.50 / unit, minimum P.O. of $500 (so, 7+ units).
The rest of the parts are cheap so it seems this would be a better alternative than buying a T4B and taking out the guts.
Or, a cheaper alternative to this part? If this part is the one, maybe a group buy? Let me know if there is interest. Lead time of 12-16 weeks, unfortunately!





horvitz

Re: LA3A 500 BUILD
« Reply #3 on: February 09, 2011, 02:18:34 PM »
Have a look toward the end of the Hairball white market thread.  Mike says that he's getting together a kit of parts for this build and will have everything in just a few weeks.  Perhaps we can give him a poke and see what that will include.

  Brian

dmp

Re: LA3A 500 BUILD
« Reply #4 on: February 09, 2011, 02:22:38 PM »
Quote from Mike:
Quote
I'll have a transformer bundle (Input, Output and EL driver) for the Peter Purpose 500 series LA3A in about 3 weeks.
The EL driver is a transformer, not the EL panel, unless I am mistaken.

Hairball Audio

Re: LA3A 500 BUILD
« Reply #5 on: February 09, 2011, 04:31:49 PM »
I'm hoping to have the transformer bundle in stock this week.  I'm just waiting on the unframed B11148.

Yes the el driver is a transformer.

Mike
« Last Edit: February 09, 2011, 05:07:11 PM by Echo North »
Hairball Audio, LLC
DIY Parts and Kits
https://hairballaudio.com

Top secret stuff and upcoming releases:
http://instagram.com/Hairballaudio
http://facebook.com/hairballaudio

horvitz

Re: LA3A 500 BUILD
« Reply #6 on: February 09, 2011, 07:27:05 PM »
Ah.. got it!  Thanks, Mike.

DMP, to help make the order I'll be in for two from LSI if we go that way.  Let me know if I can help out in any way.

Re: LA3A 500 BUILD
« Reply #7 on: February 10, 2011, 12:47:04 PM »
$82.... that's forgen robbery..!!
I tried to get Drip to get a package together, but the cnut couldn't be bothered to answer.
http://www.lazpro.com
I reserve the right to not sell to idiots

dmp

Re: LA3A 500 BUILD
« Reply #8 on: February 10, 2011, 01:36:24 PM »
Yeah, it seems expensive. I don't get it, because the fully assembled drip t4b's are $100, and in the photo it clearly shows the LSI part number. He'd be losing money if he were buying them at that cost.
http://www.dripelectronics.com/index.php?option=com_content&view=article&id=9&Itemid=30
I sent a message to him about buying the guts.
Hope he doesn't see that you called him a chestnut, he might take offense.

horvitz

Re: LA3A 500 BUILD
« Reply #9 on: February 10, 2011, 01:47:38 PM »
Did they give you any idea what kind of quantity they'd need for a price break?


zayance

Re: LA3A 500 BUILD
« Reply #10 on: February 10, 2011, 01:53:10 PM »
Quote
Hope he doesn't see that you called him a chestnut, he might take offense.

Coming from Peter i don't think so  ;D :)

dmp

Re: LA3A 500 BUILD
« Reply #11 on: February 10, 2011, 02:14:05 PM »
Quote
Did they give you any idea what kind of quantity they'd need for a price break?
I asked but didn't get an answer.

zmgwg

Re: LA3A 500 BUILD
« Reply #12 on: February 10, 2011, 02:29:17 PM »
I've also emailed drip

Hairball Audio

Re: LA3A 500 BUILD
« Reply #13 on: February 11, 2011, 12:27:20 AM »
Hi All,

Transformers are in stock:
http://www.groupdiy.com/index.php?topic=28923.msg536745#msg536745

Thanks to Peter for the project and for being an all around easy guy to deal with.

Mike
Hairball Audio, LLC
DIY Parts and Kits
https://hairballaudio.com

Top secret stuff and upcoming releases:
http://instagram.com/Hairballaudio
http://facebook.com/hairballaudio

haima

Re: LA3A 500 BUILD
« Reply #14 on: February 11, 2011, 03:12:16 AM »
Thanks Mike! what an amazing selection of transformers - something we could only dream about a few years ago.

Cheers!
Haima

Hairball Audio

Re: LA3A 500 BUILD
« Reply #15 on: February 11, 2011, 10:05:51 AM »
All credit to Ed.  He's awesome.

I actually suspect he's 70% iron, 20% copper and 10% man at this point.

Mike
Hairball Audio, LLC
DIY Parts and Kits
https://hairballaudio.com

Top secret stuff and upcoming releases:
http://instagram.com/Hairballaudio
http://facebook.com/hairballaudio

Sammas

Re: LA3A 500 BUILD
« Reply #16 on: February 11, 2011, 10:30:19 PM »


Regarding the T4B, how does it mechanically go together?

Glancing at the PCB photos, the LDR's mount to the main board and the EL panel mounts to a separate daughter board that sits over the top? Electrical connections made through the big pcb pins? 

Re: LA3A 500 BUILD
« Reply #17 on: February 12, 2011, 09:36:27 AM »




BTW.... I forgot to put a heatsink and transistor pads in the bom.
« Last Edit: February 12, 2011, 09:44:24 AM by peter purpose »
http://www.lazpro.com
I reserve the right to not sell to idiots

kato

Re: LA3A 500 BUILD
« Reply #18 on: February 12, 2011, 03:12:47 PM »

I'm wondering if we can cut something like this down to size.

I seem to remember reading once that some EL panels can be cut, but the edges must be sealed. Can't find where I read that, or know if it's true...

dmp

Re: LA3A 500 BUILD
« Reply #19 on: February 12, 2011, 03:16:38 PM »
Drip emailed me back and he was very friendly. He may be able to provide some EL panels.
« Last Edit: February 12, 2011, 03:28:45 PM by dmp »


 

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