Install a VU meter in Aleph 1.2 - 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 30th October 2010, 08:03 AM   #1
Mixon1 is offline Mixon1  Sweden
diyAudio Member
 
Join Date: Sep 2007
Question Install a VU meter in Aleph 1.2

Hi everybody!
I'm building a pair of Nelson Pass, Aleph 1.2.
In these monoamps i planned to install a VU meter, and I'm not that familiar with electronic, so I gonna need some help, (a lot of maybe...), I have seen on this forum a couple of solutions, but they are a bit complicated with very expensive components
So i wonder if there maybe could find some other, simply, cheaper solution?

And one more thing, were do I take out signal to VU meter? Is it by the incoming signal input, or by the speaker output?
__________________
  Reply With Quote
Old 31st October 2010, 06:36 PM   #2
diyAudio Member
 
Join Date: Dec 2001
Location: Philadelphia
From your questions, I believe that you are new at this.

I think you should not build these amps. They are big, expensive, and not so simple.

If you can build the amps, the VU circuit will be a piece of cake for you.

If you can afford to build them, the cost of the VU circuit will be trivial.

I suggest that you go to the PassDIY pages and choose something there to build to get started. Something like the Zen IV perhaps. You'll learn a lot, and maybe in the future you'll be able to build something as ambitious as the Aleph 1.2.

That's not the answer that you are looking for, but if you do as I suggest, you might continue in this hobby. Otherwise, you are likely to have a big expensive pile of parts and no electronics hobby. There's nothing wrong with your ambitions (ultimately), but you have to work up to that point.

Best wishes.
__________________
Vince Harris
  Reply With Quote
Old 31st October 2010, 08:58 PM   #3
Mixon1 is offline Mixon1  Sweden
diyAudio Member
 
Join Date: Sep 2007
Hi Vince!

Thanks for your reply!
Ok. I have a little bit of knowledge in electronics, but not that much as I can construct circuits by my self. But I did a few hours, surfing on the web, and actually find a really interesting homepage: VU Buffer kit page
And not that expensive either! (the other I find could cost aprox $100 each!)
About my choice in 1.2, is that I already have a pairs of Clone Aleph 2 (not built by me, but i did finish them, so they will work properly) and the "2" is little to small for my speaker, and therefor I wanted some more power by Aleph 1.2
And I also have already bought the most material to them, "only" the big caps still missing. (and VU pcb)..
So my goal is clear: Clone Aleph 1.2 it is! -For better or worse!

Best Regards, Michael Andersson
__________________
  Reply With Quote
Old 2nd November 2010, 02:02 AM   #4
diyAudio Member
 
sakellogg's Avatar
 
Join Date: Nov 2008
Location: dixon ill
maybe build the amps first and add the meter later.
you have a good idea, but as you build it might fall into place as you learn what is going on in the 1.2
i added stuff to mine as i learned how it all was working together.
not that you are not able to do it. but i blew like 6 output trans a diff pair and caused myself lots of headache untill i took my own advice
  Reply With Quote
Old 2nd November 2010, 07:48 PM   #5
Mixon1 is offline Mixon1  Sweden
diyAudio Member
 
Join Date: Sep 2007
Hi Sakellogg!
Yes, as you say, I will build the amps first, and make them run properly. Before I add some other fun "projects".
But, I had to plan, and make room in the chassis for all extra stuff I have in mind.
Of course, it gonna be rather big chassis with lots of space, but I know by experience - the rather big space attend to shrink rapidly fast by the end of the project...
I'm realistic, and for sure gonna run in some problems by the way, but othervice it not be fun to me, to build.

-This is a project I just have to do, and I will do it!
( and I building a preamp P1.7 side by side also :-) )

Best Regards, Michael Andersson
__________________

Last edited by Mixon1; 2nd November 2010 at 07:49 PM. Reason: Spelling problems...
  Reply With Quote
Old 3rd November 2010, 12:50 AM   #6
diyAudio Member
 
sakellogg's Avatar
 
Join Date: Nov 2008
Location: dixon ill
great. dont take me the wrong way... do it, you will love them. i do.
in the winter.
im also thinking about doing a 1.7.dose it have a phono stage, bal and unbal input?
  Reply With Quote
Old 3rd November 2010, 05:00 PM   #7
Mixon1 is offline Mixon1  Sweden
diyAudio Member
 
Join Date: Sep 2007
Hi Sakellogg!
Ops! I did'nt mean to get upset on you! My pology! I just meant that i really want something to be proud of, when i'm older, and can look back and think, -I really did it!

About the P1.7, my plan was to have both balanced/unbalanced input, and output, so I can choose freely. And the phonostage/Riaa I already buildt in separat cases with step-up transformers, so I can choose either MM or MC, so they will be separeted from P1.7
Or did I misunderstod you?

Best, Regards: Michael Andersson
__________________
  Reply With Quote
Old 4th November 2010, 02:22 AM   #8
diyAudio Member
 
sakellogg's Avatar
 
Join Date: Nov 2008
Location: dixon ill
no i didnt think you where upset. i was trying to say do it.
and no you didnt misunderstand. that answered my questions nicely, thanks.
im just starting the thinking part on preamps. i would like phono, bal and unbal in/out and 1.7 was on my shortlist to look into, also thinking about tubes too.
are you going stock with your 1.2's? other than a meter later?
  Reply With Quote
Old 4th November 2010, 07:31 AM   #9
Mixon1 is offline Mixon1  Sweden
diyAudio Member
 
Join Date: Sep 2007
Quote:
are you going stock with your 1.2's? other than a meter later?
Can you please explaine/develope? I dont really understand what you mean?
__________________
  Reply With Quote
Old 4th November 2010, 02:07 PM   #10
diyAudio Member
 
sakellogg's Avatar
 
Join Date: Nov 2008
Location: dixon ill
Are you changing anything (as compaired to nelson's 1.2 his is the stock version) on your 1.2?
you have talked about a VU meter. any other plans? higher bias?
  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
vu meter surfstu Tubes / Valves 14 24th March 2009 09:03 PM
My VU meter gev Analog Line Level 1 11th April 2007 07:21 AM
t-amp vu meter and volt meter question.... rectaacies Class D 7 3rd February 2006 11:22 AM
vu meter help cowanrg Parts 12 2nd September 2004 05:21 AM
VU meter nbcd Solid State 5 16th November 2003 09:02 PM


New To Site? Need Help?

All times are GMT. The time now is 05:41 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