Audiom | 100-W audio amp is 20 times more efficient than Class D chips

coloradosound · 5th October 2009, 10:20 PM

Thought somebody may be interested in this:

http://www2.electronicproducts.com/1...009.html.aspx#

mlloyd1 · 5th October 2009, 10:36 PM

100w peak from 1.5v supply?
i thought this was october ...
(vs. april)

mlloyd1

DSP_Geek · 6th October 2009, 12:28 AM

20 times more efficient? Gee, worst-case class-D is 70% efficient, so this thing must be 1400% efficient! Call the Nobel Prize committee, we've discovered the secret of endless power!

That's what happens when you let the marketing pukes put out a press release before the engineers fact-check it.

Iain McNeill · 6th October 2009, 12:32 AM

http://www.audiumsemi.com/technology.php

someone should tell them that they haven't released a title with high peak-to-average-power ratio in almost 30years.

stoc005 · 6th October 2009, 01:14 AM

!

star882 · 6th October 2009, 01:31 AM

Is it hybrid or pure digital? Not that it matters as it appears to be vaporware and not smugware...

Iain McNeill · 6th October 2009, 01:38 AM

No, I think it's a real chip. From what I can gather it's a class D driver chip with an on-board look-ahead SMPS. The SMPS steps up the 1.5V to whatever rails are needed by the class D amp to output the signal and then the class D drivers have their losses minimized by only switching the voltage needed (rather than required full power rails) and also due to longer on-times. All the power devices are off chip. This is just a controller.

I'm sure it's really good for a wristwatch boom box but that 100W spec has some very specific conditions on it. It sure as hell ain't gonna run no 15" subwoofer off a AA battery.

cbdb · 6th October 2009, 01:44 AM

They could increase the voltage out with a switching reg type cct (isnt this what class D is) (12v car amps can put out 1000w) but which pin is the 100amps going thru?

DjLeco · 6th October 2009, 03:18 AM

Quote:

Originally Posted by cbdb

They could increase the voltage out with a switching reg type cct (isnt this what class D is) (12v car amps can put out 1000w) but which pin is the 100amps going thru?

They talk about "small batteries", wich cannot offer 100 watts, not even in 20msec burst,and that's for an 100% randament!
That's a LIE, or, maybe they have discovered, new phisic laws...

peranders · 6th October 2009, 04:37 AM

You must read more carefully. The chip goes on 1.5 volts but the power transistors will have more.

5th October 2009, 10:20 PM	#1
coloradosound diyAudio Member Join Date: Nov 2005 Location: colorado	Audiom \| 100-W audio amp is 20 times more efficient than Class D chips Thought somebody may be interested in this: http://www2.electronicproducts.com/1...009.html.aspx#

6th October 2009, 01:14 AM	#5
stoc005 diyAudio Member Join Date: Feb 2007 Location: Midwest in the USA	I'll wait for the one powered by interstellar ether. !

6th October 2009, 01:31 AM	#6
star882 diyAudio Member Join Date: Mar 2007	Is it hybrid or pure digital? Not that it matters as it appears to be vaporware and not smugware... __________________ "Fully on MOSFET = closed switch, Fully off MOSFET = open switch, Half on MOSFET = poor imitation of Tiffany Yep." - also applies to IGBTs!

6th October 2009, 04:37 AM	#10
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	You must read more carefully. The chip goes on 1.5 volts but the power transistors will have more. __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

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5th October 2009, 10:36 PM	#2
mlloyd1 diyAudio Member Join Date: Feb 2001 Location: illinois	100w peak from 1.5v supply? i thought this was october ... (vs. april) mlloyd1

6th October 2009, 12:28 AM	#3
DSP_Geek diyAudio Member Join Date: Aug 2003 Location: Santa Cruz, California	20 times more efficient? Gee, worst-case class-D is 70% efficient, so this thing must be 1400% efficient! Call the Nobel Prize committee, we've discovered the secret of endless power! That's what happens when you let the marketing pukes put out a press release before the engineers fact-check it.

6th October 2009, 12:32 AM	#4
Iain McNeill diyAudio Moderator Emeritus Join Date: Oct 2007 Location: Santa Cruz, California	http://www.audiumsemi.com/technology.php someone should tell them that they haven't released a title with high peak-to-average-power ratio in almost 30years.

6th October 2009, 01:38 AM	#7
Iain McNeill diyAudio Moderator Emeritus Join Date: Oct 2007 Location: Santa Cruz, California	No, I think it's a real chip. From what I can gather it's a class D driver chip with an on-board look-ahead SMPS. The SMPS steps up the 1.5V to whatever rails are needed by the class D amp to output the signal and then the class D drivers have their losses minimized by only switching the voltage needed (rather than required full power rails) and also due to longer on-times. All the power devices are off chip. This is just a controller. I'm sure it's really good for a wristwatch boom box but that 100W spec has some very specific conditions on it. It sure as hell ain't gonna run no 15" subwoofer off a AA battery.

6th October 2009, 01:44 AM	#8
cbdb diyAudio Member Join Date: Oct 2008 Location: Vancouver	They could increase the voltage out with a switching reg type cct (isnt this what class D is) (12v car amps can put out 1000w) but which pin is the 100amps going thru?

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