Microphonic's JCM2000... One more time... help !!!! - Jemsite
Gear, Equipment, Recording & Off Topic Gear, Equipment, and Recording discussed here. Amps, pedals, whatever.

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 09-22-2003, 05:39 AM Thread Starter
Join Date: May 2003
Posts: 54
Microphonic's JCM2000... One more time... help !!!!

Hi guys,

One more time, I need some advises...

I've just heard when putting my trem's arm on my JCM 2000 head, that the amp was very microphonic (I was thinking that the reverb was at 10, but... the reverb box is far away from my amp...).

Anything touched create this sort of reverb (the cabs, the cables, the guitar, my tooths ...)

I'm quite sure that it didn't sound like this before...

What can it came from ? Are my preamp tubes out (I've played them for 2 years, but maybe an average of only 6 hours a week...) ?

Mick90 is offline  
Sponsored Links
post #2 of 3 (permalink) Old 09-22-2003, 09:24 AM
Join Date: Dec 2000
Location: Canada
Posts: 4,215
From this page:

These are the most common signs that tubes need replacement.

1)***** Excessive noise (hiss, hum) including squealing or microphonic tubes

2)***** Loss of high end. Little or no treble.

3)***** A muddy bottom end. Sounds like there is too much bass and note clarity is lost.

4)***** Erratic changes in the overall volume. Can go up and down but generally it goes much lower.

5)***** A blown H.T. fuse.

6)***** The freaking amp doesn’t work!


darren wilson is offline  
post #3 of 3 (permalink) Old 09-22-2003, 01:19 PM Thread Starter
Join Date: May 2003
Posts: 54
Ok, thanks Darren !

So, I will have to check my preamp's tubes, and change the bad one's !

Thank a lot !

Mick90 is offline  

preamp tube

Quick Reply

Register Now

In order to be able to post messages on the Jemsite forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address

IMPORTANT: You will be required to activate your account so please ensure that your email address is correct.

If you do not receive your activation check your spam folder before using the CONTACT US form (at the bottom right of each page).

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Are my INF1/2 microphonic? fluxthesky Pickups & wiring 11 08-04-2012 01:31 PM
UV Grounding problem or Microphonic P/U'S? Jemvdy Pickups & wiring 5 07-25-2011 04:17 PM
DiMarzio Pickups gone microphonic on UV's & RG7's??????? Typhoon777 Pickups & wiring 9 01-30-2004 01:33 AM
Is it possible for pups to be microphonic? - microphonic pic kevinjDBK Ibanez JEM, UV, JS & Other Signature Models 22 01-25-2002 12:50 AM
pups qm1 & qm2 - R they microphonic? Antonio All Other Guitars (including Prestige) 0 10-12-2001 02:20 PM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome