Here's to #3
Indeed, put me on the mailing list for the next group buy. Sorry to have missed this one.
Indeed, put me on the mailing list for the next group buy. Sorry to have missed this one.
Also, what are the power requirements for the PBTL? Does it require a rectified / regulated supply?
Two weeks in use - I have been running my PBTL mono's. The Individual cards have a dedicated Sigma 11 regulated supply, both supplies fed with a single 10A Transformer.
It's engaging and fascinating😀
It's engaging and fascinating😀
Read the Tech Highlights below. I used extra tall onboard heatsinks and after a few hours running at loud(aprox 90db) volume, the heatsinks are not warm with finger touch. The Sig 11 is a breeze to build.
A friend and I compared Wiener-mono/sigma's VS Weiner-Stereo/Meanwell. The mono's prefered by a large margin, stereo amp is excellent after mono amp is set aside for awhile. For the mono's I also used separate mono volume pots and adjusted them to within 10 ohms.
The σ11 regulated power supply
Joel, that's also my experience with the s11 vs. Meanwell (and other switching supplies). I have a single s11 powering two PBTL cards, standard heatsinks + cramped enclosure and heat is a non-issue. I found other linear regulated supplies also worked very well, but I'm especially fond of the s11.
The s11 PS is not current limited. It'll supply what's needed on a transient basis. Continuous load is limited only by heat dissipation of the package, which for these efficient amps and the crest factor of music does not seem to come into play.
BK
The s11 PS is not current limited. It'll supply what's needed on a transient basis. Continuous load is limited only by heat dissipation of the package, which for these efficient amps and the crest factor of music does not seem to come into play.
BK
I was sold on eventually just doing a stereo board, but I guess I'll do a PBTL. Thanks for talking me into it =)
Hey, sorry for the lack of updates.
Mailing out tomorrow: dweekie, jigglebones, surajspai
Packed, but need mailing address (I've PMed you both): eplates, brucepotter
1MORs card had a PCB fault, I've written it off and I'm bringing up another one tonight, which may or may not get mailed out tomorrow depending on how successful I am with that.
I'm 1 thermal pad short for atoluma's order 🙁 I'll get the purchasing guy at work to throw it in with tomorrow's digikey order, I'll hopefully receive it on monday. Other than that, packed up and good to go.
Mailing out tomorrow: dweekie, jigglebones, surajspai
Packed, but need mailing address (I've PMed you both): eplates, brucepotter
1MORs card had a PCB fault, I've written it off and I'm bringing up another one tonight, which may or may not get mailed out tomorrow depending on how successful I am with that.
I'm 1 thermal pad short for atoluma's order 🙁 I'll get the purchasing guy at work to throw it in with tomorrow's digikey order, I'll hopefully receive it on monday. Other than that, packed up and good to go.
My Link defaults to the Overview of Sigma 11 - click the on Tech Highlights section.
Everyone's sent out except eplates (had your address but not your real name on the package, post office wouldn't take it, name's written on the package now 🙂, 1MOR (card #2 has a shorted audio output somewhere, haven't had a chance to try my last card) and atoluma (waiting on parts)
Thanks everyone for the interest. Once these cards are out the door, and I've got an amp repaired that I've been sitting on for someone for far too long, I'll start the next group buy.
Thanks everyone for the interest. Once these cards are out the door, and I've got an amp repaired that I've been sitting on for someone for far too long, I'll start the next group buy.
I'll create a new thread when the group buy starts.
eplates and 1MOR are mailed out. Now just waiting on thermal pads for atoluma.
eplates and 1MOR are mailed out. Now just waiting on thermal pads for atoluma.
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