Username: Password:
« previous next »
Pages: [1] 2

Author Topic: Tiny Trouble  (Read 6157 times)

maverickf1jockey

  • Welterweight
  • ****
  • Posts: 1051
  • Still awaiting the release of Uncle Meat.
Tiny Trouble
« on: March 10, 2008, 05:28:14 PM »
I have finally got round to replacing the valve that was going wrong in my TT after a sudden change in the tone prompted me to get off my arse and do something about it.
The trouble is that the change has not reverted to how it was; the sound is muddy and I'm not getting nearly enough gain.
I had replaced the dodgy valve with a JJ electronics valve, which as far as I can tell was the same sound as before the change of the valve.
Swapping the JJ round with the remaining Orange-branded valve has helped a bit but it still sounds like utter shite.
I have checked my guitar and my pedals; no problems.
Can you please help; I'm at wit's end.
The replacement valve was a dual triode model if that helps you.
Logged
I too use chicken as a measurement.

Chris_G

  • Junior Flyweight
  • *
  • Posts: 31
valve
« Reply #1 on: March 10, 2008, 06:08:10 PM »
Did you set the bias when you fitted the new valve?

Also, I have on my Matamp LX a switch that switches the amp from pentode to triode - this makes the sound thinner and more fizzy so it may just be the valve you chose.
Logged

maverickf1jockey

  • Welterweight
  • ****
  • Posts: 1051
  • Still awaiting the release of Uncle Meat.
Tiny Trouble
« Reply #2 on: March 10, 2008, 06:11:45 PM »
How would one go about the process of biasing the valves? There is no evident way of doing so unless it is below the valve socket itself.
Logged
I too use chicken as a measurement.

DeanS

  • Featherweight
  • ***
  • Posts: 411
Tiny Trouble
« Reply #3 on: March 10, 2008, 07:12:51 PM »
You may wanna take this to the Orange forum- not that this place is without its amp gurus. Just a thought...
Logged
Mothers Milk set, VHII

maverickf1jockey

  • Welterweight
  • ****
  • Posts: 1051
  • Still awaiting the release of Uncle Meat.
Tiny Trouble
« Reply #4 on: March 10, 2008, 07:16:29 PM »
I'm not a member of the orange forum; hell, it's hard enough to put in a showing here half the time. I am aware of the amp gurus resident here (along with a large group who own the TT) and that is why I asked here; I trust the opinion of people here as opposed to people I don't 'know'.
Logged
I too use chicken as a measurement.

badgermark

  • Welterweight
  • ****
  • Posts: 1864
  • Mm-hai!
Tiny Trouble
« Reply #5 on: March 10, 2008, 08:24:05 PM »
I'm actually interested to hear about this too. Biasing amps is something I know zero about, and having a TT myself I think I should learn...
Logged
Mississippi Queens, Holydiver.

maverickf1jockey

  • Welterweight
  • ****
  • Posts: 1051
  • Still awaiting the release of Uncle Meat.
Tiny Trouble
« Reply #6 on: March 10, 2008, 08:28:51 PM »
It would appear solely from that comment we have much in common. Have an imaginary present from me to you :gif:.

Sorry about that Badgermark but I'm so anxious about sorting this I've been checking this thread for every 2-3 minutes and I'm going a bit strange...
Logged
I too use chicken as a measurement.

sgmypod

  • Welterweight
  • ****
  • Posts: 3765
  • Truly bad since 1972
Tiny Trouble
« Reply #7 on: March 10, 2008, 08:54:40 PM »
Interested in finding this out too for my TT
Logged
Autotune My Arse

Crawler,nailbomb & Ltd Ed Emeralds, apache, now riff raff..EX- N/bomb, IT, Mquee

badgermark

  • Welterweight
  • ****
  • Posts: 1864
  • Mm-hai!
Tiny Trouble
« Reply #8 on: March 10, 2008, 09:14:56 PM »
Found this; http://www.orangeamps.com/forumtest/topic.asp?TOPIC_ID=14380 apparently doesn't need biased? Still makes no sense to me though.
Logged
Mississippi Queens, Holydiver.

maverickf1jockey

  • Welterweight
  • ****
  • Posts: 1051
  • Still awaiting the release of Uncle Meat.
Tiny Trouble
« Reply #9 on: March 10, 2008, 10:28:16 PM »
I also found an ebay guide on what valves sounded like what but it wasn't really in enough detail.

I would think it would be a good idea to do a total refit but the cost is not pretty.

If I could avoid JJ valves that would be good (although the shop I used, RS components, only do JJs.)

After a high gain sound with a fair bit of treble (but not Fender levels). Anybody got any recommendations?
Logged
I too use chicken as a measurement.

sgmypod

  • Welterweight
  • ****
  • Posts: 3765
  • Truly bad since 1972
Tiny Trouble
« Reply #10 on: March 10, 2008, 10:33:11 PM »
Why not JJ's where they the trouble?
Logged
Autotune My Arse

Crawler,nailbomb & Ltd Ed Emeralds, apache, now riff raff..EX- N/bomb, IT, Mquee

maverickf1jockey

  • Welterweight
  • ****
  • Posts: 1051
  • Still awaiting the release of Uncle Meat.
Tiny Trouble
« Reply #11 on: March 10, 2008, 10:46:17 PM »
Because the JJ in V1 sounded the same as the busted original but was working perfectly well.
Also they only do one type of 12AX7 (the ECC83 S), which is not a high gain valve and is more useful in a HIFI application.
Logged
I too use chicken as a measurement.

Lazy_McDoesnothing

  • Featherweight
  • ***
  • Posts: 426
  • wi, usa
Tiny Trouble
« Reply #12 on: March 10, 2008, 11:43:44 PM »
Preamp tubes shouldn't need biasing, just the power tubes.  How many tubes does the TT use?  How long have you had it?  If you've had it I while I'd suggest replacing all the tubes.  I just did this with my Peavey Classic 30 and it fixed my problems I was having.  If that doesn't solve it then you have a spare set of tubes and I would take it to a tech.
Logged

Chris_G

  • Junior Flyweight
  • *
  • Posts: 31
JJ valves
« Reply #13 on: March 10, 2008, 11:49:59 PM »
I've had pretty good experiences with JJ's but they may not be what you're after. Perhaps you could try Electro Harmonix or something? I had a quad of those in a Laney GH50 and they improved the quality of the gain and reduced noise somewhat. If you look at the test reports at watfordvalves.com they may give you an insight into which valves are for you.
Logged

PhilKing

  • Welterweight
  • ****
  • Posts: 3655
Tiny Trouble
« Reply #14 on: March 11, 2008, 01:02:10 PM »
Quote from: maverickf1jockey
Because the JJ in V1 sounded the same as the busted original but was working perfectly well.
Also they only do one type of 12AX7 (the ECC83 S), which is not a high gain valve and is more useful in a HIFI application.


JJ make the ECC803S which is their high gain 12AX7
Logged
So many pickups, so little time
Pages: [1] 2
« previous next »