Get Free, Friendly, Expert Advice
Call 1-866-244-8796 or email

Designed and Manufactured in Canada Since 1980


AxiomAudio Blog

Blind Listening Tests

Sneak Peek into Axiom’s Current Research and Development

Axiom’s Newest Speaker: The In-Ceiling M3

Wall'O'Fame
Experimental Atmos
Greetings fellow Axiom owners...
Who's Online
1 registered (St_PatGuy), 54 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Financing
Forum Stats
13326 Members
11 Forums
22916 Topics
405113 Posts

Max Online: 378 @ 02/24/13 04:33 PM
Top Posters
Ken.C 17789
pmbuko 16289
SirQuack 13339
CV 11234
MarkSJohnson 10936
Meanwhile On Facebook

Did you get your "Golden Email"? The great gift certificate email giveaway star...

Here's a helpful article for everyone looking at putting a new stereo or home th...

Interesting article about who's getting the money from streaming radio services...

Page 20 of 20 < 1 2 ... 18 19 20
Topic Options
Rate This Topic
#203704 - 04/09/08 08:45 PM Re: A1400-8 [Re: Mojo]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13339
Loc: Iowa
So why does Axiom and others call their amps a digital design?
_________________________
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700
M22-OWM22-VP100-Denon2805
Audio Nirvana

Top
#203706 - 04/09/08 08:52 PM Re: A1400-8 [Re: SirQuack]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 3292
Good question. I don't know the history of that one. Maybe it has to do with the fact that the FETs turn on and off really fast so for slang they call it "digital".

Top
#203707 - 04/09/08 08:56 PM Re: A1400-8 [Re: tomtuttle]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 3292
The A1400's efficiency is proportional to the power sourced from it. So for me playing at a half watt, it's probably as efficient as a lightbulb \:\) .

Top
#203740 - 04/10/08 07:08 AM Re: A1400-8 [Re: Mojo]
Murph Offline
axiomite

Registered: 10/05/06
Posts: 6860
Loc: PEI, Canada
I didn't think light bulbs were all that efficient. They shed a lot of heat.

Sorry, I have no real point here. When I'm overtired my brain woks in odd ways.
_________________________
With great power comes Awesome irresponsibility.

Top
#203750 - 04/10/08 10:03 AM Re: A1400-8 [Re: Murph]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 3292
That's right Murph. I don't know how efficient a lighbulb is exactly but it's probably less than 10%.

Top
#203775 - 04/10/08 01:52 PM Re: A1400-8 [Re: Mojo]
gmeyer Offline
buff

Registered: 02/28/07
Posts: 43
Loc: Quincy, IL
Not sure if the amp utilizes this or not but I think it explains where the digital in Pule width modulation comes from

http://www.embedded.com/story/OEG20010821S0096
_________________________
M80,VP150,QS8,ERD-1,XPA-2,XPA-5,UMC-10,PS3,XBOX360,Dish VIP622,PB13 Ultra,Panasonic PT-AE3000U

Top
#203776 - 04/10/08 01:57 PM Re: A1400-8 [Re: gmeyer]
gmeyer Offline
buff

Registered: 02/28/07
Posts: 43
Loc: Quincy, IL
also found this really technical guide to the Basics of class D amplifiers

http://www.irf.com/technical-info/appnotes/an-1071.pdf
_________________________
M80,VP150,QS8,ERD-1,XPA-2,XPA-5,UMC-10,PS3,XBOX360,Dish VIP622,PB13 Ultra,Panasonic PT-AE3000U

Top
#203851 - 04/10/08 11:19 PM Re: A1400-8 [Re: gmeyer]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10403
The International Rectifier discussion is excellent, but the embedded link doesn't use the term "digital" in the generally accepted manner, and some might say is simply incorrect. Pulse Width Modulation of a continuous analog waveform doesn't involve any digital sampling, and although the max/min appearance of the PWM waveform has been said to be "digital-like" in appearance, it's still just a modulated continuous analog waveform. The analog waveform "concealed" within the PWM waveform is revealed when the low-pass filter removes the PWM frequency and its harmonics, leaving the original analog waveform.
_________________________
-----------------------------------

Enjoy the music, not the equipment.



Top
#203853 - 04/11/08 12:37 AM Re: A1400-8 [Re: JohnK]
Mojo Offline
connoisseur

Registered: 01/21/07
Posts: 3292
Yeah, that's right. I think some marketeer called this "digital" to be "hip" with the times. That's the difference between architecture and marchitecture \:\) .

Top
Page 20 of 20 < 1 2 ... 18 19 20



Moderator:  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Home  |  Corporate Info  |  Products  |  Message Board  |  FAQs  |  Warranty  |  Site Map  |  Privacy Statement   |  Contact Us

©2014 Colquhoun Audio Laboratories Limited
All Rights Reserved.