Capacitor Upgrade (Plate Amp) - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

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
Thread Tools Search this Thread
Old 24th July 2002, 10:37 AM   #1
BAM is offline BAM
diyAudio Member
Join Date: Sep 2001
Location: Carmel, IN; West Lafayette, IN
Send a message via AIM to BAM
Default Capacitor Upgrade (Plate Amp)

I have a Parts Express 120W sub amplifier driving a Blueprint 1001 woofer and I'm looking for ways to lower distortion and give the amplifier more control over the woofer because it is a long-excursion design. When I run the amp with the gain at maximum, I think it's clipping because it's all boomy and mushy. If I add the 10,000uf capacitors to the power supply like it was suggested to Griff not long ago, will I eliminate clipping induced by the power supply?
  Reply With Quote
Old 24th July 2002, 01:02 PM   #2
diyAudio Member
Join Date: Jun 2001
Location: Flanders, Belgium
bigger caps will improve the bass performance, and they will keep the voltage the same all the time, so clipping -occured by a fall of voltage- will be eliminated. If the clipping still resists, the voltage of the amp is too low for your needs, in this case you can power up the amp (if the components can handle this !!!) by placing a transformer which provide a higher voltage or you have to look for another amp.

Best regards,

  Reply With Quote
Old 24th July 2002, 01:45 PM   #3
diyAudio Member
Gabevee's Avatar
Join Date: Feb 2002
Location: Richmond, VA.
Hi there,

Just to clarify a something Hugo said, clipping will not go away. It will just not happen sooner than necessary.

In other words, with your current set up (no pun intended), at full volume the draw from the power supply exceeds the capacity. So good ole Ohm's law comes into play(V=IR). The only thing fixed, so to speak, is the impedance of the power supply, so the thing that must change as current is drawn is voltage. With a big load, voltage drops. With more capacitance, you have more current reserve so voltage doesn't drop. Therefore clipping doesn't occur sooner than it should. But it will occur with peaks, and with todays CDs and DVDs that can happen often. But it may not sound too bad because 1) the speaker will grossly distort even a pure sine wave at a certain level anyway, and 2) it will be too loud to tolerate, let alone notice distortion.

My 2 cents.

Gabe CGV Electronics
Home of the CGV-300B amplifier on a budget
  Reply With Quote
Old 24th July 2002, 01:55 PM   #4
diyAudio Member
Join Date: Jun 2001
Location: Flanders, Belgium
Just to clarify a something Hugo said, clipping will not go away. It will just not happen sooner than necessary.
you've got always to deal with clipping when driving the amp too far

  Reply With Quote
Old 25th July 2002, 03:45 AM   #5
Jean is offline Jean  United States
diyAudio Member
Jean's Avatar
Join Date: Mar 2002
Location: Sacramento, CA
Send a message via AIM to Jean
Hello BAM,

I use PE 250watt plate amp with Blueprint 1201 woofer. Even the 250 watter will clip, in my case at about 30-40 % I start hearing it. Thats when its connected to my pc with m-audio 24/96 card.

I would just look for a more powerful amp instead.
  Reply With Quote


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
Capacitor upgrade in Paragon 12A xronx Tubes / Valves 5 27th November 2015 08:05 PM
Meridian M2 upgrade (PS capacitor and other things) edodo Parts 3 16th July 2009 07:48 AM
X-Over capacitor upgrade UV101 Multi-Way 7 1st May 2009 12:43 PM
Capacitor upgrade calvinhpk Parts 6 2nd November 2005 06:57 AM
need SE tube amp capacitor upgrade help!! blackcat Parts 0 27th April 2004 05:13 AM

New To Site? Need Help?

All times are GMT. The time now is 04:38 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2