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OLDAMPS
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Watkins Clubman

Picture
Here's a quick look at another little Watkins, this time it's a Clubman in black and cream. This little brother (or sister) of the Westminster worked pretty well but needed a quick service and checkup.  The owner wondered if it could "do a bit more".....

The ESR meter can tell you when a capacitor is bad, but it can also tell you when bad caps appear to be good!!  Confused?  Look at the fourth picture below.  Obviously a prime candidate for replacement, with cracked, bulging out of shape ends, but it still read ok on the meter!  The main three section can capacitor read excellent too, and although the rubber looked a little perished, it wasnt bulging or leaking any juice and the amp was whisper quiet, so it was definitely doing its job.  The amp was only going to be used occasionally for recording so the can was left in place. 

A quick chat on the phone and I was just going to leave all alone for originality, except I didn't.

I always check coupling caps for leakage, especially here, as the black Hunts variety commonly fail.

Lo and behold two of them were leaking, one excessively, so they came out.  The one between the pots didn't matter as DC blocking is done by the one in front of it, connected to the plate of an ECC83.

For good tone and maximum gain I replaced the white electrolytic cathode bypass caps too.

Now it's sounding quite a bit clearer with a tad more grunt. Just have to keep an eye on that old can cap now and then. 


Watkins Cubman Service & Repair
Musicman RP 112 Sixty-five            JMI Vox AC 10
Elpico AC52                                     Carlsbro CS 60
Filmosound Amplifiers                      Hiwatt Lead 50R
Lab Series L2                                   Burns
Lab Series L5                                   Fender Twin Reverb
Selmer Constellation 20                   Fender Musicmaster Bass
Selmer Treble & Bass Mk 2              Impact 60
Schaller KV40                                   Northcourt 50
Fender 5F1 Champ                           RSC Bass Major
Traynor YGL 3 - Mark 3                     Mystery Amp
Watkins Westminster                         Denco 912-Plus
Denco 912-Plus                                 Interesting Waveforms
Wem Dominator Mk 3                        Mullard 5-10
Wem Watkins Copicat Mk 3               Decca Amp
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  • Repairs & Servicing
    • Guitar Amp Service & Repair
    • Business Card
  • Filmosound
    • Filmosound Guitar Amps
    • Filmo New Style
    • Filmonator Prototype
    • Testimonials
  • Contact
  • Amps & Stuff
    • WEM / WATKINS >
      • Watkins Clubman
      • Watkins Westminster
      • Watkins Westminster Mk 9
      • WEM Control ER15 No. 1
      • WEM Control HR 30
      • WEM Dominator Mk3
      • Watkins Copicat Mark 2
      • Wem Watkins Copicat Mk 3
      • Wem ER100
      • Wem PA100
    • Baldwin Burns Amplifier
    • Carlsbro CS 60 PA
    • Elpico AC52
    • Leo Fender >
      • Fender Concert Repair
      • Fender Twin Reverb 1977 Silverface
      • Fender Twin Reverb 1972 Silverface
      • Fender Blues Deluxe
      • Fender Musicmaster Bass Amp
      • Musicman RP 112 Sixty-five
    • Gibson >
      • Gibson Mercury
      • Gibson Falcon GA19RVT
      • Lab Series >
        • Lab Series L2 Service and Repair
        • Lab Series L5 100W Combo (Gibson/Norlin)
    • Hiwatt Lead 50R Combo
    • Marshall >
      • Marshall Artiste
      • Marshall Superbass Mk2 100W Head and Cab Service Repair
    • Miscellaneous Amps >
      • Harmony H307x
      • Hotpup 5F1 Champ
      • Impact 60
      • Mystery Amp
      • RSC Bass Major
    • Orange >
      • Orange OR120 1970s Service and Repair
      • Orange TH 30 repair
    • Schaller KV 40
    • Selmer >
      • Selmer Constellation 20
      • Selmer Treble & Bass Mk 2
      • Selmer T&B 50R SV
    • Traynor YGL 3 Mark 3
    • Tripletone Amp Conversion
    • VOX >
      • Vox AC 10 (JMI)
      • Vox AC 30 TB Restoration
      • Vox AC 50 Repair and Overhaul
  • Blog
  • For Sale
    • Amp Sales
    • Speaker Sales
  • Other
    • Marconi C10A radio
    • Interesting Waveforms