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FDP Forum / Fender Amps: 1985 - Current / The Prosonic Club: Classy Fender clean to full out shred, with the press of a button!!!

Previous 20 Messages   Next 20 Messages   Newest 20 Messages
Pumpaction

Germany & USA

* * * * * * * * *
Nov 9th, 2002 07:51 PM   Edit   Profile  

Prosonic head w/ Tome-Master 4x12
I'm notusing the amp currently but when I do it kicks a$$.

Antony

USA

Nov 12th, 2002 11:45 AM   Edit   Profile  

I used Philips 7581s for power tubes, no bias adjust, and the tone was amazing. Svetlana 6L6s do sound chunkier than the stock 5881s, but not as pronounced as the 7581s. I sold the head, looking to buy a combo soon.

Portsider
Contributing Member

Clearwater Fla USA

Nov 13th, 2002 12:47 AM   Edit   Profile  

Anthony, email me. I have your amp.

Peghead

The Netherlands

Nov 14th, 2002 05:41 PM   Edit   Profile  

Well Antony, this one's for sale now, and it's nice. One of the very first Prosonics:

EARLY PROSONIC

MadMos

USA

all we are is dust in the wind...dude
Nov 15th, 2002 04:25 AM   Edit   Profile  

well that amp is going to sell for too much. He is claiming it cost $1800, that was list it sold for $1150. It was never a custom shop amp because there is no such thing. It is exactly the same as every other prosoinic minus the repair for channel switching pop and reverb hum. And obviously first year color option.

Naked Clarke

NJ, USA

Nov 15th, 2002 07:19 AM   Edit   Profile  

That is one fugly color. Speaking of Prosonics, has anyone else heard of a mod that utilizes the unused half of the half used 12AX7? Apparently, you set it up as a cathode follower to drive the tone stack. A bit of wire and two resistors. This mod is said to make the amp tighter and more aggressive, which seems scary if you think about it.

NC

Peghead

The Netherlands

Nov 15th, 2002 09:02 PM   Edit   Profile  

Well, whatever it's going for, I'm sure in a few years time some people will be sorry they let this one get away. It IS the first Prosonic I've seen with "Fender Musical Instruments" instead of "Professional Tube Amplifier" on the faceplate, as well as the "Fender Amp Custom Shop"-designation on the backplate, making it one of the very early ones. And contrary to what Naked Clarke says, this is one beautiful color. Have one myself.

perrone

Brazil

Perrone
Nov 16th, 2002 07:44 PM   Edit   Profile  

I've got my Prosonic for about 1 month now. It's a really great amp. Very versatile. I found it quite difficult to dial a good tone at first, but w have to consider it's my first tube amp.
I played with it in a small club here on thursday and i couldn't believe the sound was coming from it.
I'm having a problem with it but I think its nothing importnt, maybe a bad solder or a bad tube socket. It happened to me sometimes that the volume would just go up and down, and sometimes the sound just disappear, and then I pressed the tubes a bit and it became normal. So, everytime before playing i press all the tubes and I dont have problems anymore. But im planning to take it to a technician to see what it is.

Anyway, great fender amp!!

JeffFlowerday

Canada

Nov 16th, 2002 10:07 PM   Edit   Profile  

Hey perrone you may just need some contact cleaner for your tubes slots. Give that a try before you take it to a tech.

Peghead

The Netherlands

Nov 17th, 2002 03:08 AM   Edit   Profile  

Yeah Perrone, what Jeff says, take out the preamp tubes, clean pins and slots with contact cleaner and carefully bend the pins slightly outward so the tube won't wiggle.

perrone

Brazil

Perrone
Nov 17th, 2002 07:06 AM   Edit   Profile  

Thanks, i'll try that today. But my preamp tubes have those metal protection with springs around the tubes. How do I take that thing out? Thanks.

perrone

Brazil

Perrone
Nov 17th, 2002 09:07 AM   Edit   Profile  

Well, i've just cleaned both pins and slots with the contact cleaner and I've just realized I don't have a 12AT7 at the fourth position as stated by the tube chart. All my preamp tubes are 12AX7!! Do I reaaly have to buy a 12AT7 to put into the fourth position? What are the sound/gain/whatever differences??? Does this make any harm to my amp??? Thanks, again...

Davids_tone

canada

Nov 17th, 2002 09:09 AM   Edit   Profile  

I had the same issue as you (perrone). I found that contact cleaner worked good. I also took a very fine screwdriver and pushed together the guide pins in the tube sockets. It also turned out that a wire was loose so I re soldered it and the amp has no trouble since then.

perrone

Brazil

Perrone
Nov 17th, 2002 09:20 AM   Edit   Profile  

OK, I'll try that also if the problem persists. And waht about the 12AT7 tube (see my previous message)? Anyone have any idea?

JeffFlowerday

Canada

Nov 17th, 2002 09:43 AM   Edit   Profile  

The 12AX7 has more gain than a 12AT7 so usually when it comes to the reverb slot you should have a 12AT7.

As for how it affects you tone, I'm thinking maybe less head room in the clean channel and it probably is a littler dirtier overall.

It won't harm your amp.

JeffFlowerday

Canada

Nov 17th, 2002 10:32 AM   Edit   Profile  

Got my JJ ECC832 for V2. It tames it down just enough to give you more range with Gain 1, and it doesn't color the tone at all.

Great tube for the application. Highly recommended.

perrone

Brazil

Perrone
Nov 17th, 2002 11:02 AM   Edit   Profile  

JeffFlowerday, what is your tube configuration (including brands) in your Prosonic?

JeffFlowerday

Canada

Nov 17th, 2002 11:31 AM   Edit   Profile  

V1 JJ ECC83S
V2 JJ ECC832
V3 JJ ECC83S
V4 JJ ECC81
V5 JJ ECC83S
V6 JJ ECC83S

JJ Power Tubes
Fender Ruby Rectifier

perrone

Brazil

Perrone
Nov 17th, 2002 12:03 PM   Edit   Profile  

What do you think about your configuration, compared to the stock one? Currently i have the orginal groove tube in it and im planning to chang. Does it need rebias with your configuration??

JeffFlowerday

Canada

Nov 17th, 2002 12:09 PM   Edit   Profile  

If you get your tubes from someone who knows how the Prosonic works, you could get cold enough power tubes to be able to handle the prosonic.
Besides the stock Groove Tubes, I starting to think that the JJ are the only ones that are cold enough for it.

What I'm saying if got real cold power tubes for it, you could get away without rebiasing. But if the tubes aren't cold, the prosonic will burn them up in a matter of hours without rebiasing.

I like my configuration, I found the stock tubes too nasal and muddy. The JJs add definition, brightness and Head Room.



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FDP Forum / Fender Amps: 1985 - Current / The Prosonic Club: Classy Fender clean to full out shred, with the press of a button!!!




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