Burning Amp Tweets - Page 15 - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

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
Reply
 
Thread Tools Search this Thread
Old 9th November 2012, 10:15 PM   #141
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
I estimate that pair of Lowthers at 94 dB. The field coils are stronger, but my
favorite 16 ohm silver overhung (love that word...) voice coils normally give
only 92 dB with the regular PM6A magnets.

It is amazing how loud they can play with what would the equivalent of a
1 watt (8 ohm) amplifier.

  Reply With Quote
Old 9th November 2012, 10:25 PM   #142
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Quote:
Originally Posted by Nelson Pass View Post
It is amazing how loud they can play with what would the equivalent of a
1 watt (8 ohm) amplifier.
How much more it requires to be magnetized for such sensitivity? 30W constantly, or more?
__________________
"Our youth [...] have bad manners, contempt for authority; they show disrespect for their elders, contradict their parents, [...] and tyrannize their teachers. -- Plato, 447-367 BCE

Last edited by Wavebourn; 9th November 2012 at 10:27 PM.
  Reply With Quote
Old 10th November 2012, 02:56 PM   #143
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
I was running 13.8V at 3 amps on each coil. They got quite hot over the
course of the day.

  Reply With Quote
Old 10th November 2012, 05:41 PM   #144
diyAudio Member
 
Join Date: Jan 2012
Location: Pennsylvania
Blog Entries: 1
Quote:
Originally Posted by Nelson Pass View Post
I was running 13.8V at 3 amps on each coil. They got quite hot over the
course of the day.

Mr. Pass: Please consider doing this experiment for science and fun:
  • Energize the Field Coil at 1 or 2 or 3 Amps. Temperature?
  • Energize the voice coil with a 0.5 W music power with F6.
  • Evaluate the quality of the acoustic output at each FC exitation amperage.
DIYers and I will appreciate you valuable observations.

Brgds
  Reply With Quote
Old 10th November 2012, 05:50 PM   #145
diyAudio Member
 
nicoch58's Avatar
 
Join Date: Oct 2004
too many $$ for DIYers , 6000$ ,better use a dedicate psu !
__________________
Sic58
  Reply With Quote
Old 10th November 2012, 05:53 PM   #146
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Why $6,000 - were they wound by virgins manually?
__________________
"Our youth [...] have bad manners, contempt for authority; they show disrespect for their elders, contradict their parents, [...] and tyrannize their teachers. -- Plato, 447-367 BCE
  Reply With Quote
Old 10th November 2012, 05:56 PM   #147
diyAudio Member
 
nicoch58's Avatar
 
Join Date: Oct 2004
ask lowther-america...
__________________
Sic58

Last edited by nicoch58; 10th November 2012 at 05:59 PM.
  Reply With Quote
Old 10th November 2012, 06:05 PM   #148
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
I asked on AES guys who made subwoofer propellers, why so expensive. "Because we want to return investments". Funny...

I would be glad to install such propeller under the floor instead of cone drivers, but the price...
__________________
"Our youth [...] have bad manners, contempt for authority; they show disrespect for their elders, contradict their parents, [...] and tyrannize their teachers. -- Plato, 447-367 BCE
  Reply With Quote
Old 10th November 2012, 06:09 PM   #149
diyAudio Member
 
Join Date: Jan 2012
Location: Pennsylvania
Blog Entries: 1
Quote:
Originally Posted by Wavebourn View Post
Why $6,000 - were they wound by virgins manually?
SUPRAVOX 215 EXC [made in France] of like design costs about $1,400 per driver when imported from Canada to the US.
  Reply With Quote
Old 10th November 2012, 09:44 PM   #150
diyAudio Member
 
Join Date: Aug 2004
Location: Chicago area
Quote:
Originally Posted by Wavebourn View Post
Why $6,000 - were they wound by virgins manually?
Gee's, I have not asked Dave if he is a virgin. That would probably come as a shock to his children, but it is possible. Dave does manually wind them though, and there is a lot of copper, steel, machine work, plating, etc. involved. I won't go into the cost of business, but will say this is more a labor of love than anything.
__________________
Jon Ver Halen
Lowther-America
  Reply With Quote

Reply


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
The Burning Amp Festival-Burning Gadgets Preview Zen Mod Everything Else 115 27th October 2007 05:50 PM


New To Site? Need Help?

All times are GMT. The time now is 10:19 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2