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Would you swap 04 Hot Rod Deville 2x12 for 78 Fender Twin Reverb with Master Volume (135 Watts)
Yes 56%  56%  [ 5 ]
No 44%  44%  [ 4 ]
Total votes : 9
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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Thu Nov 10, 2011 9:06 am
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So did you go with the Eminence Ragin' Cajun's?

Arjay

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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Tue Nov 15, 2011 8:28 am
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I actually haven' swapped them out yet. Not sure I will bother.

I did re-tube the amp but otherwise its unmolested.

There's a video clip here if you want to hear it however it's just shot with a video camera. That said, I think you'll get the idea. The tone IMHO is quite good.

http://www.reverbnation.com/thebarrelhousepoets

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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Wed Nov 16, 2011 12:08 am
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If you're happy with the tone and amp is now running reliably then that's all that really matters.

Rawk on!

8)

Arjay

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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Tue Nov 29, 2011 11:54 am
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Hey Arjay,

I've read that you can pull two of the power tubes on these amps and reduce the power this way.

Does that make it possible to get the amp to break up a little at a lower volume w/o using the master volume push pull?

Regardless which tubes do you pull and do you need to change anything regarding ohms for speaker loads etc?

The strange thing is I keep reading about how everyone says these amps are insanely loud but I can play this at bedroom volume without an issue.

I have rehearsals tonight so I'll make a not of the volume levels I'm using. We're not a loud band either......3 piece blues for the most part.

What are your thoughts?

I'm looking at ways to control the OD. I am currently running one pedal that I love and one that I want to replace (OD wise)

I thought if I could get a little break up naturally it would be ideal for rhythm then I could use the pedal for leads or as a boost......

just thinking out loud really.

Cheers!

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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Tue Nov 29, 2011 12:13 pm
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Pulling a pair of output tubes from a TR is not something I would do nor recommend.

That said, if you wish to try it you should follow this protocol: pull either V7 + V10 OR V8 + V9. This will result in an impedance mismatch to the output tranny at the primary winding. To compensate for this, insert a dummy plug into the primary speaker jack and connect your internal speakers via the extension jack. The UL TR's use a multi-tap OT with self-switching jacks that will permit any load measuring a total of 2 ohms to 8 ohms when used in tandem. You'll be accessing the 8-ohm winding only when wired thus, which is what the remaining pair of 6L6's would prefer to see under these conditions.

Best of luck, HTH

Arjay

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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Fri Dec 02, 2011 7:07 am
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Wow so much info:)

thanks again.

The amp is now not agreeing with me. The bottom end is very flabby and the amp actually breaks up quite easily which kind of surprises me. Its an awful farty sort of a sound to. Not clean, not clear and generally unpleasant.

I can get it to do so either by turning up the volume and leaving the master low (pulled in or out doesn't seem to make a difference)

or I can crank the master and use the other volume and get a similar effect.

I suspect this amp has been tinkered with because I can easily set both volumes to 4 or so for band practice and I can easily play it in the house at low volumes.

I'm going to try to dig up a little more info on it if I can get in touch with the previous owner.

the reverb tank died yesterday too. One of the wires became unsoldered and I think a component would have to be replaced in order to repair the issue.

I had a reverb tank from an old marshal so I put that in and it works but we'll see what happens when I turn it up.

I'm also getting some tube squealing which is a drag because I just replaced the tubes:(

Starting to think that the vibrations created when rolling the amp on the ground (its on casters) are actually quite bad for it if the ground is a little rough.

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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Tue Dec 20, 2011 12:56 pm
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I just played a gig through a Two Rock Custom Reverb! 8) Everything else will now fail in comparison!

That amp was pretty amazing! I guess it oughta be for the price! Its the same model that Matt Schofield uses. In fact Matt hooked the owner up with Two ROck to get it. It was purchased directly from Two Rock. If I had copious amounts of cash I'd buy one in a heartbeat.

LOL :roll:

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Post subject: Re: HELP PLZ! QUESTIONS RE 1978 Fender Twin w MV control THA
Posted: Tue Dec 27, 2011 7:38 am
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Retroverbial wrote:
Pulling a pair of output tubes from a TR is not something I would do nor recommend.

That said, if you wish to try it you should follow this protocol: pull either V7 + V10 OR V8 + V9. This will result in an impedance mismatch to the output tranny at the primary winding. To compensate for this, insert a dummy plug into the primary speaker jack and connect your internal speakers via the extension jack. The UL TR's use a multi-tap OT with self-switching jacks that will permit any load measuring a total of 2 ohms to 8 ohms when used in tandem. You'll be accessing the 8-ohm winding only when wired thus, which is what the remaining pair of 6L6's would prefer to see under these conditions.

Best of luck, HTH

Arjay



Hi Arjay,

I Hope you are enjoying a nice Holiday Season.

So I decided since I had the HRD and the Twin to connect the twin to the HRD speakers and see how it sounds. The difference was dramatic. Much tighter bottom end and just plain better overall. I believe the HRD speakers are eminance speakers.

So I thought since I have them why not swap them out and see what happens.

I took the twin completely appart and to my surprise when I pulled the speakers they were full of holes!

The inside of the cabinet has screws that come from the front of the baffle through the through to the back of the baffle. These are what the speakers are mounted to (stupid design) because if you are not careful when placing the speakers you will definatley poke holes in them. My guess is that they were like this from Day 1 (they are the original speakers) I have pictures but I don't think they can be uploaded here.

All of the holes are near the outside edge of the speaker but I can't imagin how that would not have an effect on the sound. One speaker has 6 - 8 punctures whil the other has 3 or 4.

Anyhow just thought I'd share as I can imagine that many of those amps suffered the same problem.

All the best in the New Year.

Lucas

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