dumb question :P KT88... - 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 19th June 2006, 11:04 AM   #1
diyAudio Member
 
Join Date: Jun 2006
Send a message via MSN to firefart_1st
Talking dumb question :P KT88...

i need to clear one thingy :P

on a push pull amp with 4 KT88

the output transformer will be 2.25Kohm pp ? right ?

after a repply i'll tell why i'm asking this...
__________________
music music music music
  Reply With Quote
Old 19th June 2006, 11:11 AM   #2
lndm is offline lndm  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: nsw
According to the data sheets, this might be ideal if you are using fixed bias on a tetrode or ultra-linear configuration, with a 560V B+.
  Reply With Quote
Old 19th June 2006, 11:16 AM   #3
diyAudio Member
 
Join Date: Jun 2006
Send a message via MSN to firefart_1st
it's an 560V supply.
and its and weird amp that was not working right and and friend of mine sent it to me.
the output transformer is near 8K pp
thats why i asked...
like that the amp has low power and distorts when puted loud.
fixed bias it is too.

i think its an hiwatt like power amp. and the preamp is somewere and vox or an fender...

its a total custom amp :P but not done right
__________________
music music music music
  Reply With Quote
Old 19th June 2006, 11:57 AM   #4
lndm is offline lndm  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: nsw
So watcha gonna do with it?
  Reply With Quote
Old 19th June 2006, 01:56 PM   #5
diyAudio Member
 
Join Date: Jun 2006
Send a message via MSN to firefart_1st
i'm gonna change the OT to an 2.25K with 2 4 8 and 16 Ohm output ...

i have a local man to make that

then ill test it up.

the owner said that like the tone of that amp and wants it to work the best.

i said to him if we want connect a 4 ohm speaker on tha 8 ohm out or even on the 16 ohm output. i dont guaranti itts good but. until the OT is made and paid :P o wont mess with that amp.

its an 200W monster !

bass or (clean) guitar

i was feeling dumb about that OT...
a tough i was wrong when reading that datasheets
__________________
music music music music
  Reply With Quote
Old 19th June 2006, 02:10 PM   #6
lndm is offline lndm  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: nsw
I used to run PP 6550's at around 100Wpc. I did some good listening with that amp. I have read about 250W from PP KT88's. It was described as sounding effortless, like there was unlimited power.
  Reply With Quote
Old 19th June 2006, 02:34 PM   #7
diyAudio Member
 
Join Date: Jun 2006
Send a message via MSN to firefart_1st
'unlimited power' sounds good to my ears.

but no so good for my speakers
__________________
music music music music
  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
Dumb question, but... johnm Tubes / Valves 3 13th June 2008 10:14 PM
Dumb question. G Tubes / Valves 2 16th January 2008 08:16 PM
maybe this is too dumb a question... dannyspencer Solid State 6 18th April 2004 04:57 PM
Thi is probably a dumb question.... Konnan101 Multi-Way 4 11th January 2004 01:40 PM
Dumb Zen V4 Question Panelhead Pass Labs 4 26th April 2003 04:15 PM


New To Site? Need Help?

All times are GMT. The time now is 09:17 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