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Rift Amplification
Brackley, Northamptonshire
www.riftamps.co.uk
The best thing might be to rebuild it for standard 6.3V types like 6V6s. If you do want to keep the original valves, it may be easiest to use a simple 240V-240V isolation transformer - it would be horribly inefficient to use the resistive voltage dropper but it probably doesn't matter that much!
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"As far as I know all direct-rectified equipment does. It should be a fairly simple job to rewire them for parallel when fitting the mains transformer though - assuming they're all 6.3V types. "
As you have now discovered IC, AC/DC kit has a variety of heater VOLTAGES but the same current.
Rather than go to the great trouble and expense of rewiring the amp I would just get it working with a standard 1:1 workshop mains isolation traff then fit a smaller (50VAish?) isolator and earth the chassis. This then keeps the amp working almost as it would have done when dangerous! One thing alone will probably affect the sound and that is the half wave rectification. Technically very bad now of course but going to be very "saggy" I bet!
The only reservation I have is whether equipment so modified is still legal? If it passes a PAT test I cannot see why not but then I am not a technical lawyer!......I would certainly not sell the thing!
Dave.
Nor me. I recently refused a job on an old DIY-built amp for exactly this reason - not because it wasn't safe or couldn't be made so, just that I felt it was unwise to personally guarantee it. The owner wanted it fixed up to sell it - I suggested he simply sold it as-is and let the buyer worry about it. It probably ended up about the same in money terms - to him anyway, not to me, but I can live without the risk.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
It's no extra work than pasting the link from the address bar.
Looking for a U31 and some 6BR7 (ef86 swappable?)????
Can anybody help a (paying) brother out??
Good luck with the restoration!
There are a couple of Brimar's on eBay just now, but they are auctions. Langrex are showing 608 (!) in stock. He's not the cheapest, but very good and his NOS really are NOS ie unused! You need to call or email for a price.
http://www.langrex.co.uk/stocklist.html
Ive just come away from a session with the TV15 and my Matchless Chieftain in a stereo spread with a few delay and mod pedals.... What an amazing sound - love the 2 amp thing
Ill try and record a video for s+g's