SE used as step down OT - 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 7th March 2004, 12:38 PM   #1
diyAudio Member
 
Join Date: Mar 2004
Location: New Hampshire
Default SE used as step down OT

Hi, newbie here.

I have an old boatanchor (Hallicrafters SX-62) undergoing exploratory surgery and find that someone added a SE transformer to the high impedence speaker taps, apparently to allow the use of more "modern" 4/8/16/32 ohm loads. Just curious if this may cause any bad juju. The SE is an old Stancor with 5K primary and is hooked to the 5K tap (and gnd).

Thanks ------- any 'this is bad engineering practice beacause......"
comments would be appreciated. I think this (separate transformer at each load) is basically what is done with 70v systems, right?

Thanks,
Rob
  Reply With Quote
Old 7th March 2004, 06:23 PM   #2
diyAudio Member
 
Tom Bavis's Avatar
 
Join Date: Jun 2002
Location: Macedon NY
Well, listen to it and see - if you want the best possible sound, your best bet is to replace the output transformer. If you want to keep it original (I would), the second transformer is the way to go. Do you have a manual? It's at BAMA
  Reply With Quote
Old 7th March 2004, 07:26 PM   #3
diyAudio Member
 
Join Date: Mar 2004
Location: New Hampshire
Yeah, I have (original) service manual and I'm not going to be making any modifications. The add-on OT is about as old as the radio itself and it sounds pretty good. Actually I'm still on a learning curve and was wondering how this configutation firured into things ---- sum of the characteristics of both OTs I suppose.

Thanks.
  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
Step-by-step ambitious first project! Suggestions? ledhed2222 Multi-Way 7 13th August 2009 03:51 AM
Step-by-step guide to building a speaker Richy Multi-Way 5 5th August 2008 12:48 AM
stuffing Mileva: first timer step by step questions schro20 Full Range 7 2nd June 2008 05:49 PM
how to make spherical wood horns, step by step angeloitacare Multi-Way 0 29th May 2007 01:50 AM
LM3886 & LM3876 Step-by-step P2P Guides?? zenon Chip Amps 11 18th November 2006 03:16 PM


New To Site? Need Help?

All times are GMT. The time now is 11:43 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