Jump to content
Why become a member? ×

Ashdown little bastard whooshing


Westenra
 Share

Recommended Posts

I'm pretty miffed, bought this second hand the other month and today I've got that whooshing sound which (from what I gather) could be a transformer issue. Now as I bought it second hand am I entitled to ashdowns superb customer service or should I take it to a tech? OR ( a big or) is it something a little DIY can't fix?

Link to comment
Share on other sites

Well I didn't take any valves out and the whooshing sound went away on its own BUT (and a big but at that!) I've noticed a substational drop in volume, I can have it cranked going through a barefaced 15" compact and it isn't nearly as loud as it was yesterday with the whooshing sound.

Link to comment
Share on other sites

[quote name='ColinB' timestamp='1470063622' post='3103001']
It's a valve amp, first thing to do is clean the valve contacts, and then swap similar valves around to see if the noise changes. This will sort out a huge proportion of valve amp troubles by fixing it, or showing up a defective valve.
[/quote]

+1

Link to comment
Share on other sites

So I opened it up, took all the valves out and sprayed contact spray, no luck... I then replaced one of the stubbier valves (the three in the front, guess they are the pre-amp ones...?) with a new ruby one and boom it all works perfectly now.

However when I was going through the valves they were a mix match of different types, is this something I should avoid?

Link to comment
Share on other sites

[quote name='Westenra' timestamp='1470682670' post='3107649']
So I opened it up, took all the valves out and sprayed contact spray, no luck... I then replaced one of the stubbier valves (the three in the front, guess they are the pre-amp ones...?) with a new ruby one and boom it all works perfectly now.

However when I was going through the valves they were a mix match of different types, is this something I should avoid?
[/quote]

The pre amp and any driver tubes typically can be different. And in the case of the LB has 2x12ax7 and 1x12au7 any off these can be a different brand. And you can probably play about with the 12ax7's to get slight changes.
The output valves (el84) however should be matched and of the same brand.

Link to comment
Share on other sites

[quote name='Westenra' timestamp='1470748958' post='3108129']
Any recommendations for replacement valves? Want something that can bark with my jazz...
[/quote]

I know over on talkbass they have a few excellent threads on the LB including swapping valves etc.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...