F4 - Factory Built- First impressions - 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 23rd July 2008, 09:07 PM   #1
diyAudio Member
 
Join Date: Mar 2006
Location: San Juan
Default F4 - Factory Built- First impressions

I know this forum is a DIY one, but I have not seen too many posts on factory built units. A few impressions on my new F4 amplifier:

Well, it got shipped via USPS Priority from California to San Juan, PR in only 3 days . How is that for our postal service.

It is being used to drive a pair of Reference 3aMM DCapo's speakers, and itself driven by a Supratek Chardonnay preamplifier, which is a perfect combination because the Supratek is a very high gain preamplifier. Digital chores are taken care by 47 Labs electronics.

After less than 1 hour of first turning it on, (it really gets hot) the amplifier was producing a very detailed and sweet sound. I checked with Mark about break-in time but he mentioned the F4, according to Nelson, does not really need break-in time. Last night, however, after 30 hours of use I am sure I heard a definitive improvement, i.e., sweeter and smoother.

The inner detail this amplifier produces is amazing and what I like the most, is that one can hear everything there is in the mix at much lower volume levels than with my previous amplifier (Plinius P8, yes I know an overkill)
  Reply With Quote
Old 24th July 2008, 01:19 AM   #2
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
You understand that the amplifier is burned in and re-adjusted over
a several day period. What people generally experience is the
performance over the first couple of warm-up hours.

In any case, if you're happy, then I'm happy.
  Reply With Quote
Old 24th July 2008, 02:10 AM   #3
diyAudio Member
 
Join Date: Mar 2005
Location: Bakersfield Ca
not to mention the magical touch by Pass hands.
  Reply With Quote
Old 25th July 2008, 08:26 PM   #4
steenoe is offline steenoe  Denmark
diyAudio Member
 
steenoe's Avatar
 
Join Date: Mar 2004
The F4 does not need any magical hands, just build it yourself..... If you have the preamp to drive it fully into your chosen speakers, its simply a whopper..... I havent heard anything yet to match it...
  Reply With Quote
Old 26th July 2008, 04:07 AM   #5
diyAudio Member
 
albertli's Avatar
 
Join Date: Nov 2004
Location: Vancouver
Steenoe,

Is there any chance you have the F4 schematic handly?

Oh!! I like fly fishing too.

Albert
  Reply With Quote
Old 27th July 2008, 12:33 PM   #6
tms0425 is offline tms0425  United States
diyAudio Member
 
Join Date: Oct 2006
Location: Ft. Wayne, IN
Schematics are here

F4 Schematic
  Reply With Quote
Old 27th July 2008, 05:15 PM   #7
diyAudio Member
 
albertli's Avatar
 
Join Date: Nov 2004
Location: Vancouver
Thanks
  Reply With Quote
Old 31st July 2008, 03:54 AM   #8
diyAudio Member
 
Join Date: Mar 2005
Location: Bakersfield Ca
Steenoe,
I built a pair and am fat dumb and happy with, however lacking the equipment , knowledge, and resources to swap components to achieve the optimal balance. I would be curious how our concoctions would sound next to a first watt product.

Bill
  Reply With Quote
Old 2nd August 2008, 04:40 PM   #9
steenoe is offline steenoe  Denmark
diyAudio Member
 
steenoe's Avatar
 
Join Date: Mar 2004
Hi Bill..
You are putting out an interesting question, indeed. I dont think that the factory made units sound better than the DIY ones, generally! Ofcourse it all depends on build-quality... If you skimp too much, the amp won't sound as good as it could. But: The average DIY'er doesn't need to care about a few dollars added cost, so if you build an extra fine PSU, for example, the amp might sound better than the original!! Ofcourse its nice to own a genuine and original product, but the sound of it will probably not be better than your homemade effort...


  Reply With Quote
Old 2nd August 2008, 06:53 PM   #10
Magura is offline Magura  Denmark
diyAudio Member
 
Magura's Avatar
 
Join Date: Oct 2003
Location: Denmark, Viborg
It could be interesting to compare the Steenoe F4 to the Lykke F4.

Such a comparison should give a hint.


Magura
__________________
Everything is possible....to do the impossible just takes a little while longer.
www.class-a-labs.com
  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
DIY loudspeaker vs. factory built loudspeaker keyser Multi-Way 83 16th May 2011 01:27 PM
What I built, impressions and solutions? IG81 Full Range 44 23rd April 2009 06:21 PM


New To Site? Need Help?

All times are GMT. The time now is 04:56 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