Hammond SE Transformer question - Page 2 - 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 8th May 2004, 03:07 PM   #11
alk is offline alk  Europe
diyAudio Member
 
alk's Avatar
 
Join Date: Apr 2004
Location: tiny place
I just thought if the 125ESE sounds good and doesn't even get warm why not try the ASE?, not really because is cheaper but because is smaller...anyway why the OT should be that big for only 2 watts?...i feel like i am wasting the transformer....off to the guitar amp
Now i need a good schematic for a guitar amp.
Cheers
i have decided what to do...i will go for the smaller...will post if results are poor. I don't think so.
Thanks for the help
  Reply With Quote
Old 8th May 2004, 03:09 PM   #12
diyAudio Member
 
baggystevo82's Avatar
 
Join Date: Dec 2003
Location: Herefordshire
Send a message via MSN to baggystevo82
Good luck
  Reply With Quote
Old 8th May 2004, 03:10 PM   #13
alk is offline alk  Europe
diyAudio Member
 
alk's Avatar
 
Join Date: Apr 2004
Location: tiny place
Steve in those frequencies i don't
  Reply With Quote
Old 10th May 2004, 05:36 AM   #14
diyAudio Member
 
pingfloid's Avatar
 
Join Date: Jan 2004
Location: Bangkok
Hi Alk,

I've always heard that transformer for guitar amps are deliberately under-sized, so the small tranny maybe will be ok.

Buena suerte!
  Reply With Quote
Old 10th May 2004, 05:37 PM   #15
alk is offline alk  Europe
diyAudio Member
 
alk's Avatar
 
Join Date: Apr 2004
Location: tiny place
Thanks for the input Pingfloid,
first time i hear that;
lovely cat by the way...
Saludos
  Reply With Quote
Old 11th May 2004, 05:14 AM   #16
diyAudio Member
 
p_ete2003's Avatar
 
Join Date: Nov 2003
Location: Helsinki
Default 125ESE

Hi! I've made my PCL86 SE with the Hammond 125ESE transformers. Response isn't flat in the low end, there sure is some drop. I don't have any spectrum analyzer, have tested with test CD. With my Fostex FE206E in a BL horns it doesn't bother, cause the f0 is ~50Hz...

-Pete
  Reply With Quote
Old 11th May 2004, 08:54 PM   #17
diyAudio Member
 
pingfloid's Avatar
 
Join Date: Jan 2004
Location: Bangkok
Morgan Jones at the book "Valve Amplifiers" says that output transformers for guitar are deliberately poor (at the chapter "Guitar amplifiers and arcs"). Maybe they do this not only to economize in price and weight, but also to get more "tone" (bluesy distortion).

This thread also talks about transformers for single end amps.

Regards,

Manuel
  Reply With Quote
Old 11th May 2004, 09:58 PM   #18
alk is offline alk  Europe
diyAudio Member
 
alk's Avatar
 
Join Date: Apr 2004
Location: tiny place
Hi Pete,
how does it sound to you? i ask because i haven't got much experience and would like to know your opinion about the amp.
  Reply With Quote
Old 11th May 2004, 10:11 PM   #19
alk is offline alk  Europe
diyAudio Member
 
alk's Avatar
 
Join Date: Apr 2004
Location: tiny place
Hi Manuel:
That makes sense...i've read that Matchless made a famous amplifier line starting with just one excellent transformer they got from an amp with great tone. They duplicated it and made a design for it so i guess OT are vital for the right guitar tone.

Cheers
Alvaro
  Reply With Quote
Old 12th May 2004, 05:05 AM   #20
diyAudio Member
 
p_ete2003's Avatar
 
Join Date: Nov 2003
Location: Helsinki
Hi Alvaro,

the first impression was that there is a lot of highs compared to mids and bass. Cannot tell anymore..
I added some caps to the amp to reduce hum. I think the sound is now too "dry/airless". Have to adjust the filtering cap values.

Overall the amp sounds better than I expected.
  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
Hammond 269 EX transformer (never used) zenmh Swap Meet 7 4th August 2009 07:06 PM
Question about Allied & Hammond Power Transformer Ratings Bitrex Tubes / Valves 2 6th March 2009 07:31 AM
One Question for Hammond 1620 output transformer Menator Tubes / Valves 1 19th March 2007 10:51 PM
WTB: Hammond 269EX Transformer mrdon Swap Meet 0 12th April 2006 03:05 AM
Hammond Transformer in Toronto drcy Tubes / Valves 0 1st June 2004 02:18 AM


New To Site? Need Help?

All times are GMT. The time now is 07:27 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