Go Back   Home > Forums > >

Pass Labs This forum is dedicated to Pass Labs discussion.

An illustrated guide to building an F5
An illustrated guide to building an F5
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
Old 15th October 2021, 12:13 PM   #1941
Dennis Hui is offline Dennis Hui  Canada
Hoopy Frood
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
An illustrated guide to building an F5
The amount of connecting/disconnecting required with one meter is too error prone for me to recommend it. To bias up my F5 I used two meters, one of a 0.47R source resistor (doesn't really matter which one) and one for DC offset. And you don't need anything fancy.
__________________
We are fearless amplifier builders. A little heat doesn't scare us at all.
- NP 2002
  Reply With Quote
Old 15th October 2021, 01:06 PM   #1942
asilker is offline asilker  United States
diyAudio Member
 
asilker's Avatar
 
Join Date: Sep 2015
Location: Chicago IL
I purchased three Innova 3320's from Amazon and a bunch of different clips (see previous photos). All 3 cost less than a fluke and it made the biasing procedure super easy. Takes 5 minutes with 3 meters. With one I wouldn't have realized how interactive both pots are and it may have taken me over an hour to adjust for DC offset.
  Reply With Quote
Old 15th October 2021, 02:17 PM   #1943
A Jedi is offline A Jedi  United States
Not an EE
diyAudio Member
 
Join Date: May 2019
An illustrated guide to building an F5
I see. Thanks gents.
  Reply With Quote
Old 15th October 2021, 02:47 PM   #1944
rayma is offline rayma  United States
diyAudio Member
 
Join Date: Apr 2011
Quote:
Originally Posted by asilker View Post
Would have been less happy if I lost my Dac 19 too just because I like it so much.
Since most source components have an output coupling capacitor, the DAC's smoke/smell
from the DC at the amp inputs may just have been a small resistor to ground, which you
can do without, or easily replace.
  Reply With Quote
Old 26th October 2021, 03:51 AM   #1945
von Ah is offline von Ah  United States
diyAudio Member
 
von Ah's Avatar
 
Join Date: Feb 2008
Location: Maryland, USA
An illustrated guide to building an F5
Because I had a work-related, frustrating mishap this morning, I decided to switch up the Chi in my home office (which is really my living room with my main listening gear, plus my work stuff).

I swapped out my VFET SE with my F5 and was really struck with how great the F5 is. I think it matches my Manzanita-ish speakers better. I heard some new things in familiar songs that I haven’t before.

Case in point: The Shins ‘New Slang’ has a bit of wooden-fish-like percussion in it that I never noticed before. But today, it was clear as day. And I know I heard that same recording recently.

The F5 is a fantastic amplifier. Happy listening, everyone.
Attached Images
File Type: jpg 79DCAB29-FAD6-47E5-BFE8-7786E10530EF.jpg (125.6 KB, 123 views)
File Type: jpeg A90D58E1-0EEB-4340-A120-B48BA144FD61.jpeg (734.0 KB, 117 views)
File Type: jpeg A6CDF241-EF2B-4E55-AD34-7310FFF26001.jpeg (700.9 KB, 116 views)
  Reply With Quote
Old 26th October 2021, 03:52 AM   #1946
6L6 is offline 6L6  United States
diyAudio Moderator
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
An illustrated guide to building an F5
Quote:
Originally Posted by von Ah View Post
The F5 is a fantastic amplifier. ...
It always has been!

  Reply With Quote
Old 26th October 2021, 01:25 PM   #1947
bullitt5094 is offline bullitt5094  United States
DIY Rookie
diyAudio Member
 
bullitt5094's Avatar
 
Join Date: Jan 2012
Location: Cypress, TX
An illustrated guide to building an F5
With my LX Mini system I'm using an F5 for the full range transducers and an F5 Turbo for the low end transducers. The combination of creations of two of my favorite folks in the Audiophile kingdom is a wonderful thing. Also using the Pass active crossover to feed them. Lots of karma right there!
__________________
Bob
The Perfect Audio Component is Exotic, Incredibly Expensive, Horribly Inefficient, Unavailable and Toxic (Nelson Pass)
  Reply With Quote
Old 26th October 2021, 02:16 PM   #1948
Dennis Hui is offline Dennis Hui  Canada
Hoopy Frood
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
An illustrated guide to building an F5
Sounds like a wonderful combo!
__________________
We are fearless amplifier builders. A little heat doesn't scare us at all.
- NP 2002
  Reply With Quote
Old 26th October 2021, 02:44 PM   #1949
bullitt5094 is offline bullitt5094  United States
DIY Rookie
diyAudio Member
 
bullitt5094's Avatar
 
Join Date: Jan 2012
Location: Cypress, TX
An illustrated guide to building an F5
Thanks Dennis. I didn't discover Linkwitz's endeavors until after his passing. But I was surprised with his and Nelson's friendship Linkwitz didn't put more emphasis on the amplifier quality than he did. Maybe it was that he was trying to make his creations more of an every-mans system and the number of amp channels required with the active crossover configuration would be very expensive if higher quality amps were utilized. Especially with the earlier Orion and 521 designs. I think Nelson should do a "Burning Amp Tribute" with a pair of 521 using his amplification and crossovers to drive everything.
__________________
Bob
The Perfect Audio Component is Exotic, Incredibly Expensive, Horribly Inefficient, Unavailable and Toxic (Nelson Pass)
  Reply With Quote
Old 26th October 2021, 09:00 PM   #1950
McQuaide is offline McQuaide  United States
diyAudio Member
 
Join Date: Jan 2011
Location: Southeastern Pennsylvania
Quote:
Originally Posted by bullitt5094 View Post
With my LX Mini system I'm using an F5 for the full range transducers and an F5 Turbo for the low end transducers. The combination of creations of two of my favorite folks in the Audiophile kingdom is a wonderful thing. Also using the Pass active crossover to feed them. Lots of karma right there!
Pics?
__________________
Mark Micro Seiki DDX-1000>Pearl 2>BA-3 FE>F5>Mirage OM-7 Towers
  Reply With Quote

Reply


An illustrated guide to building an F5Hide this!Advertise here!
Thread Tools

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
F5 Amps - Building a Quartet of Amps in search of the Ultimate F5 NYCOne Pass Labs 124 30th May 2016 12:56 PM
Idiot´s guide to building Pass amps? judge Pass Labs 3 20th December 2004 12:33 AM


New To Site? Need Help?

All times are GMT. The time now is 12:23 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki