Search found 93 matches

by joey_truelove
Tue Oct 16, 2018 5:24 pm
Forum: Rack Pieces
Topic: 50/50 export model's wiring of primary and varistor photos?
Replies: 4
Views: 2369

Re: 50/50 export model's wiring of primary and varistor phot

Hi Joey, Here’s a pic that might be of some use to you. It’s on this webpage. https://www.thegearpage.net/board/index.php?threads/why-did-mesa-criss-cross-leads-of-the-50-50-ots.1970104/ Thanx, mate! That's all good, but it seems the OP of that thread also enquires about the section farthest to the...
by joey_truelove
Tue Oct 16, 2018 5:22 pm
Forum: Rack Pieces
Topic: 50/50 export model's wiring of primary and varistor photos?
Replies: 4
Views: 2369

Re: 50/50 export model's wiring of primary and varistor phot

Hi Joey, I don’t have a 50/50 but I do have a diagram for one, it’s not that great but it is still one. On it it says variations to voltage of 20% are normal. If you’d like it, I can email it to you. Cheers Brett. Yes, you're quite correct about that. However + 20% does put the output valves in a b...
by joey_truelove
Sat Sep 22, 2018 3:50 pm
Forum: Rack Pieces
Topic: 50/50 export model's wiring of primary and varistor photos?
Replies: 4
Views: 2369

50/50 export model's wiring of primary and varistor photos?

I'm amidst of trying to sort out this converted american model Fifty/ Fifty. The PT seems to be the export version, so that checks out. But it doesn't have a varistor and the voltage is much higher than expected, unhealthily high if you're the screen grid of a 6L6GC. As it were it didn't look very s...
by joey_truelove
Fri Sep 21, 2018 4:14 am
Forum: Rack Pieces
Topic: Method for Fifty/ Fifty PT removal?
Replies: 0
Views: 1138

Method for Fifty/ Fifty PT removal?

Just how the heck was the PT in the Fifty/ Fifty fitted? Those four threaded studs at the bottom I understand. But then those other two holding it in place at the front? With basically no wiggle room those front-side two effectively see to that the PT effectively isn't going anywhere. It just won't ...
by joey_truelove
Sat Aug 18, 2018 9:56 am
Forum: Rack Pieces
Topic: Internal tube change and cleaning. 2:50, 50/50, 2:90;
Replies: 3
Views: 2721

Re: Internal tube change and cleaning. 2:50, 50/50, 2:90;

I own the 2:50. I listed the other amps assuming they are all somewhat similar on the inside. I am ordering new power tubes soon from Mesa. I have owned the amp since about 2003 or a bit longer. During my ownership I have never opened it up. It is probably due for a cleaning to get rid of the years...
by joey_truelove
Sat Aug 18, 2018 9:23 am
Forum: Rack Pieces
Topic: Just how is the OT of the 50/50 wired?
Replies: 1
Views: 1725

Just how is the OT of the 50/50 wired?

I'm about to re-cap my 50/50, a bias pot fitted and possibly even looking into having the OTs replaced. However I just don't get the wiring of the OT secondaries. The 8 ohm outs appear to have twin leads, orange and yellow. If I got it right the OTs were designed for 8 ohms, be it 2 x 4 ohms or sing...
by joey_truelove
Tue May 29, 2018 7:55 pm
Forum: Rack Pieces
Topic: 7581As in the Fifty/ Fifty?
Replies: 1
Views: 1457

7581As in the Fifty/ Fifty?

I do love the basic sound and operation of the Fifty/ Fifty I have. I just wish it had some more headroom. Do you think the TS 7581A would work in my favour here? Could the amp even handle those, you think? The PT looks rather sturdy, I think. If not then I suppose I'll just have to fit a heavier OT...
by joey_truelove
Tue May 29, 2018 7:46 pm
Forum: Rack Pieces
Topic: 50/50 - Anyone tried 5751's?
Replies: 1
Views: 1566

Re: 50/50 - Anyone tried 5751's?

In the power-amp the lower gain level is basically going to make the outputs harder to push and would likely only make it quiteter. Couldn't say this would be a desirable trait. Gain experiments in the pre-amp of an amp makes more sense, since you still would have plenty of opportunity to reach good...
by joey_truelove
Wed Jun 28, 2017 7:36 pm
Forum: Modern Era Amps (1991-Present)
Topic: what are the fillmore speakers?
Replies: 45
Views: 18751

Re: what are the fillmore speakers?

I still haven't a clue what these are.... http://i30.photobucket.com/albums/c309/bladestriker32/IMG_0055_zps4e05ed7d.jpg http://i30.photobucket.com/albums/c309/bladestriker32/IMG_0056_zps117c6fdb.jpg These look very much like WGS British Lead speakers, the early ones w. rear vents - note the mosqui...
by joey_truelove
Sat Aug 10, 2013 5:08 pm
Forum: Rack Pieces
Topic: My Fifty/ Fifty is going to make me absolutely nuts...
Replies: 7
Views: 1501

Re: My Fifty/ Fifty is going to make me absolutely nuts...

...just to rule out the (often forgotten) obvious: did you check the fuse?? 8) 8) Cheers mate! It's brand new, so I had no reason to doubt it - at least I thought not. As it happens that very same suggestion came up during dinner w. my dad, so I measured it and turns out it may be the culprit we're...
by joey_truelove
Sat Aug 10, 2013 7:15 am
Forum: Rack Pieces
Topic: My Fifty/ Fifty is going to make me absolutely nuts...
Replies: 7
Views: 1501

Re: My Fifty/ Fifty is going to make me absolutely nuts...

Will try and remove the unit from its rack to make an inspection and possibly take some photos of it, as you suggest. But I've smelled nothing burnt and when I put it in quite recently nothing was out of the ordinary visually. Edit: Just took it out. Nothing funny looking about it from what I can se...
by joey_truelove
Fri Aug 09, 2013 7:22 pm
Forum: Rack Pieces
Topic: My Fifty/ Fifty is going to make me absolutely nuts...
Replies: 7
Views: 1501

Re: My Fifty/ Fifty is going to make me absolutely nuts...

No, the thing has some connection broken internally or otherwise. Measuring the connector for resistance my gauge reads infinate ohms, so something must have gone bust or worked loose.
by joey_truelove
Fri Aug 09, 2013 7:09 pm
Forum: Rack Pieces
Topic: My Fifty/ Fifty is going to make me absolutely nuts...
Replies: 7
Views: 1501

Re: My Fifty/ Fifty is going to make me absolutely nuts...

Tried different ways to connect the thing but it's just stone dead. I think I'll measure the primary on the PT to see what would happen. Funny that it seemed to run so smoothly yesterday and today...
by joey_truelove
Fri Aug 09, 2013 10:46 am
Forum: Rack Pieces
Topic: My Fifty/ Fifty is going to make me absolutely nuts...
Replies: 7
Views: 1501

My Fifty/ Fifty is going to make me absolutely nuts...

I have not been using my 50/50 for quite a while, since it had some issues that could have had something to do with it having been submitted to force to one of the presence knobs. Ah well, I did have it replaced and fired it up yesterday. Sounded good and strong and I felt I was back-in-busines - hu...
by joey_truelove
Tue Mar 18, 2008 1:56 pm
Forum: Rack Pieces
Topic: Stupid question about power amps
Replies: 7
Views: 1044

Another vote for the Fifty/Fifty. You'd probably find one of these on the used market for around €600 or thereabouts. There is a mod for these I believe shape the sound similarly to the 2:50, the purpose for it being to match it with the Triaxis pre-amp for a heavier and darker sound. The down-side ...