Mueta classe D - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 24th January 2006, 04:16 PM   #1
diyAudio Member
 
Join Date: Apr 2005
Location: Sćo Paulo
Default Mueta classe D

Anybody know MUETA classe D ?

See the FAQ below...
http://www.mueta.com/html/class-d_faqs.htm


www.halcro.com is using this mueta...

[]“s
Joćo Martins
  Reply With Quote
Old 24th January 2006, 06:16 PM   #2
diyAudio Member
 
Join Date: Jul 2004
Location: Seattle USA
Wow - Looks very interesting.
Great specs and great to see measurements on their site.

What's the pricing and do they sell to DIY?
  Reply With Quote
Old 24th January 2006, 06:27 PM   #3
Account Disabled
 
Join Date: Feb 2004
Send a message via AIM to classd4sure Send a message via MSN to classd4sure
Default Re: Mueta classe D

Quote:
Originally posted by jmartins
Anybody know MUETA classe D ?

See the FAQ below...
http://www.mueta.com/html/class-d_faqs.htm


www.halcro.com is using this mueta...

[]“s
Joćo Martins

Not exactly. They kind of patented their own version of it. Mueta still has nothing available... ~5 years later!
  Reply With Quote
Old 24th January 2006, 07:11 PM   #4
TerryG is offline TerryG  United States
diyAudio Member
 
Join Date: Nov 2005
Location: Northern California
Default Re: Mueta classe D

Quote:
Originally posted by jmartins
Anybody know MUETA classe D ?

See the FAQ below...
http://www.mueta.com/html/class-d_faqs.htm


www.halcro.com is using this mueta...

[]“s
Joćo Martins

Why do you say, Halcro is using them? How do you know this? Halcro's site says nothing.

TG


  Reply With Quote
Old 24th January 2006, 07:58 PM   #5
diyAudio Member
 
Join Date: Jan 2002
Default Re: Re: Mueta classe D

Quote:
Originally posted by classd4sure



Not exactly. They kind of patented their own version of it. Mueta still has nothing available... ~5 years later!

I think it has been a bit longer than 5 years! I first contacted them about getting an evaluation board, which their website has claimed availability since launch, at least 6 or so years ago! I stayed in constant contact with them until about a year ago, after hearing how an evaluation board would "be ready in a few more months" for 5+ years, I grew tired and have decided to go with something that is actually in production.

I would be shocked if they ever bring a product to market...Talk about vaporware!
  Reply With Quote
Old 24th January 2006, 08:38 PM   #6
Account Disabled
 
Join Date: Feb 2004
Send a message via AIM to classd4sure Send a message via MSN to classd4sure
Default Re: Re: Re: Mueta classe D

Quote:
Originally posted by kuribo



I think it has been a bit longer than 5 years! I first contacted them about getting an evaluation board, which their website has claimed availability since launch, at least 6 or so years ago! I stayed in constant contact with them until about a year ago, after hearing how an evaluation board would "be ready in a few more months" for 5+ years, I grew tired and have decided to go with something that is actually in production.

I would be shocked if they ever bring a product to market...Talk about vaporware!

Same here ... exactly, hard to think it's actually been that long huh? Only I gave up on them a few years ago and concentrated on UCD, when they released that schematic and had nothing to show for it, again. Not to say there still isn't some interest there, I just don't ever expect to see anything from them. Certainly I'm less interested to now see the measurements of their supposed IC being worse than their original module, though still very respectable.

Big mistake on their part, the story was people at the AES just loved their idea but convinced them that in module format it would be too easily ripped off, guess they never heard of epoxy.. so they wanted to hold back and produce it in IC form simply to protect their IP. One has to wonder where they got that kind of backing to produce an IC without even a module on the market, considering the steep learning curve envolved and the costs of R&D for that sort of thing.

Then of course we see the latest update with schematics and new measurements to try and tide us over again but no "click to order link", it's become a shameful embarrasment, and I think they're going bust, surprised the website is still up.

The icing on the cake so to speak is Halcro borrowing their novel (yet obvious in my view) control scheme, changed just enough to get away with it, and not even mentioning them as prior art, now selling their amps for .... what I just found to be close to 20K USD!

I feel sorry for them. Really they ought to see the light about now and start getting some modules out there! They could have changed the face of class D as they've been claiming for years on their website, but that ship has long since sailed and they missed the boat.

Regards,
Chris
  Reply With Quote
Old 24th January 2006, 09:30 PM   #7
subwo1 is offline subwo1  United States
diyAudio Member
 
subwo1's Avatar
 
Join Date: Jan 2002
Location: North American Continent
Hmm, could it be that they have IC chips in some products already?
__________________
USMPS
http://groups.yahoo.com/group/switchmode/
  Reply With Quote
Old 24th January 2006, 09:39 PM   #8
SSassen is offline SSassen  Netherlands
diyAudio Member
 
SSassen's Avatar
 
Join Date: Mar 2005
Location: Edam, The Netherlands
Well, I have not heard of any commercial products using their technology, not have I ever seen, or heard, a Mueta amplifier. Their website however gets updated every now and then (http://www.mueta.com). The concept looks solid and compensates for just about every error that you are likely to see in a class-D amplifier, so I am confused as to why they've not been able to market this? UcD has been very successful, with plenty of products being manufactured under license so there certainly is a market.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com
__________________
Acception without proper examination equals religion
Condemnation without proper examination equals prejudice
  Reply With Quote
Old 24th January 2006, 09:49 PM   #9
Account Disabled
 
Join Date: Feb 2004
Send a message via AIM to classd4sure Send a message via MSN to classd4sure
Like I said, strickly because others convinced them it would be too easily ripped off in module format. Now that halcro patented what I assumed to be the IP they'd wanted to protect, the control scheme, it no longer seems to apply. They must also have noticed the success Hypex is enjoying with their modules, and a little epoxy goes a long way.

I also questioned them before as to most of their control circuitry not making it into the IC, and how the IC appears to be nothing more than a hysteretic comparator + driver. Makes me scratch my head a little anyway. Seems like they've made alot of bad decisions and I kind of hope they'll reverse a few of those.

How can they now compete with their technology since the IC is a lesser performer than they'd advertised so long ago. Do they want to compete with Tripath and now ICEpower for the ghetto blaster /car audio market or the High end/UCD/best of the best .... I don't know, but it seems their chip answers that already. I'd be more interested in modules how about you? No doubt a well layed out PCB in module form would far outdo any IC.

That last update to their website happened ... at least three years after the one before it, and still no"available now, click to order or contact" etc. Crazy.
  Reply With Quote
Old 24th January 2006, 11:08 PM   #10
diyAudio Member
 
Join Date: Jul 2004
Location: Seattle USA
Too bad - looks good - if it's real.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
head's up= Mueta kuribo Class D 7 27th May 2008 01:54 PM
MuEta? Sandor Class D 2 20th February 2006 12:25 PM
Mueta - Welcome back Sheriff Class D 11 28th September 2005 05:06 PM
Which chip and whatever happened to Mueta and UCD? David M Class D 224 20th July 2004 03:03 PM
Mueta amp, DIY questions jwagnerhki Solid State 3 29th October 2003 08:32 PM


New To Site? Need Help?

All times are GMT. The time now is 09:53 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2