Fender Prosonic and the magic of the 5751 tube...

Discussion in 'Amps and Cabs' started by FenderBigot, Jul 14, 2019.

  1. FenderBigot

    FenderBigot Supporting Member

    Messages:
    24,670
    Joined:
    Mar 12, 2008
    Location:
    Tampa Bay
    I got my Prosonic back from the tech yesterday and the clean channel sounds great. I was noticing too much gain on the lower knob settings for the OD channel and it was also a bit bright compared to the clean channel, so I popped a JAN/Phillips 5751 in V2 this morning and there it was... super sweet sounding amp OD. :aok

    There really is something to be said about what the 5751 does to taming or keeping an amp's OD channel in check. I almost left this tube in a Vox amp I sold a few years ago and I'm so glad I had this sitting in a drawer waiting for the perfect application! :D

    This amp is my minimalist pedalboard amp for sure. I just have to pop a delay in the loop and put a wah, tuner and the amp's footswitch on the floor, paired volume knob management it's a fantastic amp. I can show up to sit-in or jam and be set up in 3 or so minutes! ;)
     
    Rossi163, ROKY, Tstyle and 5 others like this.
  2. BlueRiff

    BlueRiff Member

    Messages:
    5,108
    Joined:
    May 19, 2016
    Location:
    MI
    Great to hear you found the tone you like in this amp. My buddy had a Prosonic for years and he had an aggressive, mid forward sound out of it - clean or OD. However, when he stepped forward for the rock solo this amp cut through like no other. Maybe the 5751 would have tamed the beast for him. :) I think he eventually sold the amp.
     
    FenderBigot likes this.
  3. FenderBigot

    FenderBigot Supporting Member

    Messages:
    24,670
    Joined:
    Mar 12, 2008
    Location:
    Tampa Bay
    Yeah... you can get a really great classic rock or even higher gain hard rock sound from this amp without any pedals. I'm going to try moving the 5751 to V3 too to see what that does, but I now know that V2 (first gain stage for the OD channel) was were some of that extra gain was sitting.
     
  4. BlueRiff

    BlueRiff Member

    Messages:
    5,108
    Joined:
    May 19, 2016
    Location:
    MI
    On the cutting through the mix - my friend didn't really play that distorted on leads - it was more the crispiness of the notes and the amps vocal quality - jus t really big sound and tone. A ripper indeed. Awesome for clean funk because of that too. Let us know how the V3 sounds if you try it.
     
    FenderBigot likes this.
  5. spaceman_spiff

    spaceman_spiff Supporting Member

    Messages:
    680
    Joined:
    Jan 15, 2010
    Location:
    Pasadena, CA
    I'm with you. For me the gain structure of the Prosonic is way too much, so I had an NOS 5751 (that I had used in The TB channel of a Vox AC15H1TV, funny enough) and put that into V2 of the Prosonic. And like you, I've been wanting to try it it in V3 as well, but just haven't gotten around to it.

    I live on the clean channel 90% of the time, which is more like my Silverface Bassman than say, a Super Reverb. The Prosonic cleans (like the Bassman) are a little more beefy but still articulate and shimmery, just not as much as a Blackface combo. The Prosonic clean channel takes pedals incredibly well.
     
    Rossi163 and FenderBigot like this.
  6. FenderBigot

    FenderBigot Supporting Member

    Messages:
    24,670
    Joined:
    Mar 12, 2008
    Location:
    Tampa Bay
    I agree completely! They have this bouncy "bubbly" thing going on... it's a really nice sound.
     
    Gridlock likes this.
  7. Oinkus

    Oinkus Member

    Messages:
    2,877
    Joined:
    Nov 14, 2014
    Location:
    Yorktown VA
    I can't remember which lower gain JJ tube I put in V2 now WTH ? I have been using the gain set on 3 or lower on both for awhile now. Certainly will go into high gain overly aggressive with a just a nudge. Had it since 95 and it is a cold dead fingers amp for me.
     
    FenderBigot likes this.
  8. Viper 900

    Viper 900 Member

    Messages:
    54
    Joined:
    May 28, 2019
    Location:
    The Fens, UK
    The 5751 is a weapon. It’s always been my secret to massive clarity with big drop tuned chords
     
    eigentone and FenderBigot like this.
  9. TA22GT

    TA22GT Member

    Messages:
    890
    Joined:
    May 31, 2017
    I had a strange encounter with the Prosonic 2x10 combo.
    I would set it up and get a great sound and be really in to it and then it "went off" in that the sound changed. It would happen after about 30 mins or so of playing. Sometimes I would break for a cuppa, leaving the amp on in my studio, and when I came back it sounded different.

    Hard to describe but it somehow drifted from the sound I had set up. I loved it when it was on but eventually sold it.
     
  10. stratzrus

    stratzrus Philadelphia Jazz, Funk, and R&B Silver Supporting Member

    Messages:
    20,144
    Joined:
    May 16, 2006
    Location:
    Philadelphia, PA
    Interesting idea, I may try a JAN/Phillips 5751 in my Prosonic Combo.

    It was my main gigging amp for a while playing Jazz/Funk/R&b gigs but I felt like it was a little light on the bottom end. I put a pair of EVM 10Ls in it and the tone was glorious! Huge and tight bottom end at volume, almost like a compact cab Twin Reverb.

    The problem was that it was so heavy I didn't want to transport it and one day we had a gig that was up two large flights of stairs. I asked our drummer, who was an athlete, if he'd carry it upstairs for me. He picked it up about two inches off the floor, put it back down, and looked at me with pure hatred. That was the last time I gigged with it.

    Still, it's a wonderful amp and if I knew for a fact that there were no stairs I'd throw it on my Magna Cart and use it without hesitation if I didn't have other options now.

    Still the JAN/Phillips 5751 sounds like it's worth a try. Thanks for the tip FB!
     
    FenderBigot likes this.
  11. FenderBigot

    FenderBigot Supporting Member

    Messages:
    24,670
    Joined:
    Mar 12, 2008
    Location:
    Tampa Bay
    Just tried it in V3 and the gain difference wasn't that big, but the OD channel got brighter almost to being a bit harsh. I put it back in V2. :aok
     
    BlueRiff likes this.
  12. jnovac1

    jnovac1 Supporting Member

    Messages:
    5,391
    Joined:
    Jan 24, 2010
    Location:
    nowhere
    zinky strikes again!
     
    FenderBigot likes this.
  13. fitz

    fitz Member

    Messages:
    1,966
    Joined:
    Feb 25, 2010
    Location:
    NEPA
    I had a bunch of Philips 5751's years ago and they were great tubes. Perfect for taming an amp just a bit if you like a little less preamp gain, I use one in my little GA5 RI and it smoothed the amp out perfectly
     
    FenderBigot likes this.
  14. paulydangerous

    paulydangerous Member

    Messages:
    1,304
    Joined:
    Oct 17, 2004
    Location:
    Pickerington, Ohio
    I had a 2x10 combo years ago. Gorgeous to look at but man it was brittle,
    harsh,and cold. Didn't keep it very long. I wanted it to be the one.
     
  15. Oinkus

    Oinkus Member

    Messages:
    2,877
    Joined:
    Nov 14, 2014
    Location:
    Yorktown VA
    And mine has gone on the fritz , cracking and popping noises when I play. Did all of the standard tests on all of the tubes by changing them and tapping. Might be the work an idiot did on it some time ago or some random cap no clue.
     
  16. sickboy79

    sickboy79 Member

    Messages:
    11,736
    Joined:
    Aug 17, 2006
    Location:
    Chicago
    Yep! Can't say enough good things about a great 5751! Just a great tube and it really does well in some amps that are very high gain and on the brighter side. It can really bring it back into a sweeter range. I've played a Prosonic a few times and loved it stock with all 12AX7s. Would love to hear it with a 5751.
     
    FenderBigot and BoogieManSC like this.
  17. sickboy79

    sickboy79 Member

    Messages:
    11,736
    Joined:
    Aug 17, 2006
    Location:
    Chicago
    FWIW - he's a great amp designer, IMO! Prosonic, Tone Master, Vibro King, Dual Professional, and his own line. All amazing stuff. I'm a biased Tone Master owner.
     
    Rossi163 and FenderBigot like this.
  18. jnovac1

    jnovac1 Supporting Member

    Messages:
    5,391
    Joined:
    Jan 24, 2010
    Location:
    nowhere
    the blue velvet is an under appreciated fire breathing monster that proves it’s value in a live mix. like most zinkys!
     
    sickboy79 likes this.
  19. BoogieManSC

    BoogieManSC Member

    Messages:
    1,294
    Joined:
    Mar 29, 2011
    Location:
    Just outside Charlotte NC, but in SC
    Totally agree on the 5751 tube. I just threw them in V1 & v2 of a few amps:
    - Splawn 50w Supersport EL34
    - Mezzabarba Mzero Overdrive
    - Marshall DSL 100HR
    ...with great effect in all. All the amps have more gain than I'll ever practically use. The 5751's added a great clarity and tamed the gain and added a clearer gain tone, to my ears. Also made the clean channels of each a bit sweeter.

    Tung-Sols 5751 in the Splawn & Marshall
    TAD 5751 in the Mezza
     
    FenderBigot likes this.
  20. Tstyle

    Tstyle Member

    Messages:
    451
    Joined:
    Feb 25, 2013
    Prosonic is a sleeper amp for sure! Here's a vid of mine. Great blues tone.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice