SE 8-10W monoblock build help - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 April 2013, 09:38 AM   #1
diyAudio Member
 
barackuda's Avatar
 
Join Date: Oct 2006
Default SE 8-10W monoblock build help

Hello guys:

I found a guy who will build an amp for me.
What I want are two SE monoblocks of about 8-10W each with reasonable priced and quality tubes. he suggested 6P3S tubes.
I am looking on some good budget, good sounding (with full range Fostex driver) amp which would suit my task.
I will make the enclosures my self, he will project the amp and build it inside.

Any help appreciated

Danny
  Reply With Quote
Old 9th April 2013, 01:04 PM   #2
diyAudio Member
 
oldschooltube's Avatar
 
Join Date: May 2011
Location: Quad Cities USA
gabevee.tripod.com/setube.html

I built this little amp and love it. Simplicity and good tone. Also cheap to build.
__________________
Marty: "Why don't you just make 10 louder?"
Nigel: "...These go to 11."
  Reply With Quote
Old 9th April 2013, 01:36 PM   #3
diyAudio Member
 
Join Date: Apr 2004
Location: Monroe Township, NJ
The 6П3С-E (6p3s-e) is, currently, the best deal available in a 6L6 variant. The supply of Soviet surplus will dry up, but other decent 6L6 variants, like the "reissue" ST bottle TungSol, are in production.

It will be tough to get the power wanted triode wired, unless some Class A2 action is employed. Getting the desired power level out of ultralinear SE should be easy.
__________________
Eli D.
  Reply With Quote
Old 9th April 2013, 01:49 PM   #4
diyAudio Member
 
Join Date: Nov 2009
Location: Cortez, CO
1625, from what I have heard are excellent if not the best sounding 6L6 variant. They are usually very cheap too, but you need the old style 7 pin sockets, a grid cap, and 12 volts filament. They sell pcbs for them at diytube

Russia made a version r1625, and the r807, it's a 1625 in a old style 5 pin socket. ebay

Last edited by DeathRex; 9th April 2013 at 01:55 PM.
  Reply With Quote
Old 9th April 2013, 04:15 PM   #5
diyAudio Member
 
barackuda's Avatar
 
Join Date: Oct 2006
Thanks guys for the suggestions. Honestly I don't care if its 2W or 200W
The speakers will be about 98dB/1w/1m so even 1W is enough.
I don't know why I put the value in, perhaps just because we have been talking about that figure. Seem the consumers are still attached to thousands of watts....
I want the amp to be as simple as simple as possible, i.e. as little elements in the signal path as possible.No corrections, only volume knob, thats it.
  Reply With Quote
Old 9th April 2013, 04:29 PM   #6
diyAudio Member
 
azazello's Avatar
 
Join Date: Aug 2008
Location: Bulgaria
You have a PM.
  Reply With Quote
Old 10th April 2013, 11:30 AM   #7
diyAudio Member
 
Join Date: Sep 2007
In addition to the 6P3S-E that Eli mentioned there's another one from Russia that is an excellent current build tube 6L6WXT+ (6L6GC) with the larger plates for 35w dissipation. I've used NOS 6P3S 6P3S-E and the 6L6WXT+ 6881($) and 6L6GCs (and 807s too) in single ended tube amps I built. They all sound excellent. For budget and more power the 6L6WXT+ $18/tube - again for 400V at the plate and can even go more... if you're running between 300-400v then the 6P3S-E or 6P3S will sound fine too. Once you go up to the 400v B+ (or more) range everything including power & output transformers and capacitors the price starts to climb and I think it's more like exponential rise.. so think about where your want your B+ voltage to be. 6L6 variant will get you where you want with sound AND budget so long as you stay 300-400v B+ and you can even get decent GXSE transformers from Edcor that do a good job and are easy on the wallet. I like catode bias for the power tubes and LED bias for the driver(s) - for driver tube you could go all Russian and get some 6N1-EV there for cheap too and they sound great too. If you go for the 300-400v B+ you will be around 6-7w/ch with UL and will drive you out of the room if you turn it up with your speakers. So good'nuf there.

Cheers,
Bob
  Reply With Quote
Old 10th April 2013, 04:36 PM   #8
diyAudio Member
 
azazello's Avatar
 
Join Date: Aug 2008
Location: Bulgaria
Very good choice for UL SE is Russian 6P45S - very linear with low inner R and output power more 7-8 w. I have and I tried it and sound is really cool.
Good pretubes are, IMO, 5670, 5687, Russian 6S45P, 6S3-4P that are better 6N1-2-3P. Edcor transformers are very suitable, that I have. Very important are type and brands of resistors and capacitors.
  Reply With Quote
Old 10th April 2013, 05:07 PM   #9
diyAudio Member
 
Join Date: Apr 2004
Location: Monroe Township, NJ
Barackuda,

Since you are going to use high efficiency speakers and low power O/P is not an issue, use triode wired O/P tubes from the 6V6 family. Somebody else said that short of expensive #45 DHTs, triode wired 6V6s yield the best sound in this "2" W. range. I can say that triode wired 6V6 family tubes do sound GOOD.
__________________
Eli D.
  Reply With Quote
Old 10th April 2013, 08:19 PM   #10
diyAudio Member
 
barackuda's Avatar
 
Join Date: Oct 2006
Thanks guys for the suggestions. We agreed on the 6P3S tubes, as he got them NEW and will include them free in the build. I have no clue about tubes whatsoever. What we agreed on is that I look up some builds, and let him now the details.
So what should I go for? 1 or 2 output tubes? or more? What driver tubes are suitable for the 6P3S tubes (if I understand it right) ?

What would be the physical dimensions of monoblocks with these tubes? As I have to give him the aprox sizes for the chassi that he will build.

Thank you again

Danny
  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
I have a 10W SEP tube amp - Now which DIY speaker to build - Advice? gsdurrant Full Range 25 25th May 2012 11:38 PM
WTB - SE 5k 8ohm 10w OP Tansformers nikolas812 Swap Meet 0 15th February 2009 10:28 PM
Tubelab SE monoblock? Evenharmonics Tubelab 8 28th April 2008 07:02 PM
10W JFET/MOSFET SE Class A, no Feed Back widowmaker Solid State 9 26th November 2006 01:00 PM
Linsley Hood SE 10W amp Asen Solid State 35 8th October 2001 09:07 PM


New To Site? Need Help?

All times are GMT. The time now is 08:24 AM.


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