Class D Amps - AVS Forum
Forum Jump: 
 
Thread Tools
Old 03-06-2013, 04:28 PM - Thread Starter
Senior Member
 
Floydster's Avatar
 
Join Date: Dec 2005
Location: Fort Worth, TX
Posts: 435
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I just finished reading this link on class D amplifiers http://en.wikipedia.org/wiki/Class-D_amplifier.

I get the basic concepts, but the advantages seem to be in cheaper manufacturing costs rather than better quality sound. Would you think that was a fair statement? What type of amplifier do you like the most?

Floyd

A lie can travel halfway around the world before the truth gets its shoes on. -- Mark Twain
Floydster is offline  
Sponsored Links
Advertisement
 
Old 03-06-2013, 05:05 PM
AVS Special Member
 
M Code's Avatar
 
Join Date: Mar 2003
Location: Joshua Tree, CA
Posts: 9,968
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 152 Post(s)
Liked: 133
Quote:
Originally Posted by Floydster View Post

I just finished reading this link on class D amplifiers http://en.wikipedia.org/wiki/Class-D_amplifier.

I get the basic concepts, but the advantages seem to be in cheaper manufacturing costs rather than better quality sound. Would you think that was a fair statement? What type of amplifier do you like the most?

Floyd

Early Class D solutions had some audible negative byproducts, later Class D solutions were refined significantly and now can sound very good..
Regarding costs the output stage for Class D are cheaper, as large heat sinks are not required. Additional cost savings are possible depending upon power supply type and design. Going forward, within the next few years Class D will be the standard in AVRs as it already is in OE/aftermarket 12V, multi-media, all-in-1 systems and home theater subwoofers.

Just my $0.02... wink.gif
M Code is offline  
Old 03-06-2013, 05:19 PM - Thread Starter
Senior Member
 
Floydster's Avatar
 
Join Date: Dec 2005
Location: Fort Worth, TX
Posts: 435
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by M Code View Post

Early Class D solutions had some audible negative byproducts, later Class D solutions were refined significantly and now can sound very good..
Regarding costs the output stage for Class D are cheaper, as large heat sinks are not required. Additional cost savings are possible depending upon power supply type and design. Going forward, within the next few years Class D will be the standard in AVRs as it already is in OE/aftermarket 12V, multi-media, all-in-1 systems and home theater subwoofers.

Just my $0.02... wink.gif

Thanks for your opinion. It gives me an idea of where the market is headed and how the designs have progressed.

Floyd

A lie can travel halfway around the world before the truth gets its shoes on. -- Mark Twain
Floydster is offline  
Old 03-06-2013, 05:43 PM
AVS Special Member
 
jima4a's Avatar
 
Join Date: Jun 2011
Location: Southeast USA
Posts: 1,554
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
Liked: 70
I do believe the future will be a higher efficiency design but I don't believe it has arrived quite yet, at least not for the masses. Class D or switching amps do a lot of things right and would not hesitate trying some for surrounds and maybe center but not mains.
The December issue of Stereophile reviewed a $50,000 and a $6,000 set of monoblocks by highly regarded companies - they know how to do sound. Now so many people say Stereophile and others just bow to the advertisers and give glowing reviews but they failed to recommend either. I also see where people jump on the class D bandwagon but after a while of living with it many switch back to class A/ B. I also believe this won't show in a blind ABX audition, you need to live with it. However, I will admit all my knowledge on this is second hand.
Perhaps NAD or Devialet or someone else will prove me wrong, I would like less heat in my media room.

Main Kef: Reference 205/2 & 202/2c, Surrounds: Kef XQ40, Velodyne Optimum 12, Integra DHC 80.3, Ayre K-5xeMP, Oppo BDP-103, Bryston 4Bsst2, Parasound Halo A31. Second B&W: 685 (3), CCM618, Def Tech Powerfield 1500, Onkyo TX-NR1008, Zone 2 Klipsch AW650.
jima4a is offline  
Old 03-06-2013, 09:08 PM
AVS Special Member
 
jima4a's Avatar
 
Join Date: Jun 2011
Location: Southeast USA
Posts: 1,554
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
Liked: 70
Just to clarify, it is for music I'd want class AB for the mains. For movies not sure it would matter as much.

Main Kef: Reference 205/2 & 202/2c, Surrounds: Kef XQ40, Velodyne Optimum 12, Integra DHC 80.3, Ayre K-5xeMP, Oppo BDP-103, Bryston 4Bsst2, Parasound Halo A31. Second B&W: 685 (3), CCM618, Def Tech Powerfield 1500, Onkyo TX-NR1008, Zone 2 Klipsch AW650.
jima4a is offline  
 
Thread Tools


Forum Jump: 

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