World-Designs-Forum  

Go Back   World-Designs-Forum > World Designs > Wish List
Register FAQ Members List Calendar Gallery Today's Posts Mark Forums Read

Wish List Poll your project wishes here

View Poll Results: Should WD include a SS Class A amplifier?
Yes - it would be a good intro to WD kits 24 41.38%
Yes - secretly, I'd love to learn about SS and chips 13 22.41%
Yes - I want to save the planet 1 1.72%
Yes - they sound much better than valves 2 3.45%
No - you're off your rocker 18 31.03%
Voters: 58. You may not vote on this poll

Reply
 
Thread Tools Display Modes
  #21  
Old 4th January 2006, 07:27 AM
alexs2 alexs2 is offline
Member
 
Join Date: Jan 2006
Location: London
Posts: 45
Default Re: Solid State Class A Amplifier

Having owned solid state Class A amps for several yrs,I'd be interested in building one,if only to see exactly what goes into one,and I'd love to try something along the lines of a PassLabs Zen or Aleph,having looked at Pass's site so many times over the years,and seen some of the amazing things that some people have cooked up(have any of you seen the lightbulb Zen?)

A really good SS Class A amp has it's good and bad points,but will always sound very different from a tubed amp,but the power can be very useful at times,and 100W+ of Class A is lovely.
Reply With Quote
  #22  
Old 4th January 2006, 05:21 PM
dan_s's Avatar
dan_s dan_s is offline
Member
 
Join Date: Jan 2006
Location: Israel
Posts: 48
Default Re: Solid State Class A Amplifier

IMO a reasonably priced SS amp will not sound better than any of the wad kits. a very very good ss amp will probably not be better than the 300B kits, so what i'd really want is a high output (200-400W) ss amp for driving subwoofers/bass-section-in-a-bi-amped-system like a class T amp or an AB class likes the Haflers.
Reply With Quote
  #23  
Old 4th January 2006, 07:16 PM
alnewall alnewall is offline
Senior Member
 
Join Date: Dec 2005
Location: Chester
Posts: 764
Default Re: Solid State Class A Amplifier

Quote:
Originally Posted by dan_s
IMO a reasonably priced SS amp will not sound better than any of the wad kits. a very very good ss amp will probably not be better than the 300B kits, so what i'd really want is a high output (200-400W) ss amp for driving subwoofers/bass-section-in-a-bi-amped-system like a class T amp or an AB class likes the Haflers.
I don't think SS amps will ever sound better overall than a good tube amp, but they will sound different and can be very good. However, some people might like to have the choice and indulge in a little alternative listening from time to time..
Reply With Quote
  #24  
Old 4th January 2006, 10:41 PM
Max N Max N is offline
Senior Member
 
Join Date: Dec 2005
Location: Reading UK
Posts: 270
Default Re: Solid State Class A Amplifier

I'd be interested in a Class A ss amp, if only because it would be toddler friendly (assuming the heatsinks were conservatively specced...)
Reply With Quote
  #25  
Old 30th January 2006, 06:14 PM
vitalstates's Avatar
vitalstates vitalstates is offline
Senior Member
 
Join Date: Jan 2006
Location: e.yorks
Posts: 476
Default Re: Solid State Class A Amplifier

I for one would love to see somebody(knowledgable) in the uk post some info on Nelson Pass designs(aleph). It is written that they are 'to die for' but its tricky sourcing or getting parts info here in the uk(particularly monster heat sinks).

Regards

Ed
Reply With Quote
  #26  
Old 3rd March 2006, 01:24 PM
Scottmoose's Avatar
Scottmoose Scottmoose is offline
Senior Member
 
Join Date: Feb 2006
Location: Hull
Posts: 851
Default Re: Solid State Class A Amplifier

I built the V6 Son of Zen. Impressive stuff, though it has rather different priorities to most other amps and sucks power like nothing else I know. Matched my horns well before I sold them on.
Reply With Quote
  #27  
Old 8th March 2006, 06:06 PM
Black Stuart Black Stuart is offline
Senior Member
 
Join Date: Dec 2005
Location: France
Posts: 1,156
Cool Re: Solid State Class A Amplifier

I have to agree with Al,
about really detailed instructions and posted on another thread some time ago that SME in the very early 70's showed the way with lots of photos.

I don't like PCB based amps maybe because they are cheapskate productions - why not 'proper eyelets solder points' as most builders will experiment with different comps. The WAD ones are bad, how bad I don't know because I have never built others. The tracks will lift if you just look at them - simply not good enough.

I would have much preferred to start with tag boards or point to point - all it needs are properly explained procedures (thanks Al) and photos - a picture is worth a thousand words and in the age of very cheap photo copiers - there is simply no excuse.

Black Stuart
Reply With Quote
  #28  
Old 8th March 2006, 07:03 PM
leo:) leo:) is offline
Senior Member
 
Join Date: Dec 2005
Location: Notts
Posts: 104
Default Re: Solid State Class A Amplifier

I'd say classD will eventually replace solid state but not yet for a while, you'd be struggling to build any classD amp from scratch to be honest, have a look at the circuits, the better ones are all surface mount too, some are even quad layered pcbs you also need a really good quality power supply , these things are much more picky than a solid state amp even though they are claimed to be alot more efficient.

I've built more than a few different amps, WAD kit88, solid state,chip based ,classD and T etc but the only solid state classA design I tried was Pavel Macura's Mosfet power follower with DoZ pre-amp which I hard wired to a pair of huge heatsinks
Reply With Quote
  #29  
Old 8th March 2006, 08:09 PM
Greg.'s Avatar
Greg. Greg. is offline
WD Archivist
 
Join Date: Dec 2005
Location: Bristol, UK
Posts: 3,502
Default Re: Solid State Class A Amplifier

And, Leo, what did it sound like? Is it worth doing?

Best wishes,

Greg
Reply With Quote
  #30  
Old 9th March 2006, 07:34 AM
John Caswell John Caswell is offline
Super Moderator
 
Join Date: Dec 2005
Location: Wokingham, Berkshire
Posts: 1,700
Default Re: Solid State Class A Amplifier

Hi all,
The one thing most people seem to forget about class D amps is that they are a switching type device a la Switch Mode Power Supplies (SMPS), and can be the very devil to get rid of RF type interference. As Guido Tent of Philips said "I spent years trying to build a quiet SMPS, but gave up in the end". Of the 3 I have had a look at, 2 put out so much residual RF interference that a CD player adjacent was blanketed out. Had similar problems with CD players and AM and FM radios.
As Leo says they can and will be very difficult, if not impossible, to build from scratch, and I guess that most people will use a readily available base modules from companies like Tripath, which takes the whole fun out of it.
Not for me thank you!

John aka Dr john
Reply With Quote
Reply

Thread Tools
Display Modes

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rectification: solid state Vs. valve. andrew ivimey General 10 30th September 2006 12:59 PM
Solid State andrew ivimey Amplifiers 1 26th March 2006 10:18 PM
solid state phono amplifier Ianm2 Wish List 6 21st March 2006 09:01 PM
Solid State Diodes - Choice FAQ Team FAQ - Upgrades and Tweaks 0 12th January 2006 12:06 PM
What is meant by Class A, Class B etc? FAQ Team FAQ - Technology 0 6th January 2006 10:23 PM


All times are GMT +1. The time now is 08:44 AM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
Copyright World Designs