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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Fri Aug 19, 2011 7:19 am
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Rebelsoul wrote:
My goodness!!!
Thank god for schematics!...good job nedorama.


Thank god for techs that are still around that are willing to pull out nearly everything (including most of the preamp tube sockets, which were fried) and rewire everything back to stock, including cloth push-back wire.

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'59? Bogen Challenger CHA-33, '65 Bandmaster, '65 Tremolux, 65 Showman;
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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sat Aug 20, 2011 7:42 pm
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The only way the insides of that one could have been worse was if there was some duct tape holding the transformers in :lol: :lol: :lol:

Sure looks nice now :!: :!: :!:

T2

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 21, 2011 1:19 pm
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Thanks - luckily the transformers and choke were all original and had survived.

Looking forward to getting it back next week.

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'59? Bogen Challenger CHA-33, '65 Bandmaster, '65 Tremolux, 65 Showman;
'74 SF Princeton; '77 SF Princeton Reverb; Dr. Z Mini Z

Our band: http://www.facebook.com/thetoysband


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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 21, 2011 3:10 pm
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nedorama wrote:
Thanks - luckily the transformers and choke were all original and had survived.


Indeed.

That iron is worth a small fortune.

Arjay

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 21, 2011 6:28 pm
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Hey Nedo. So how's that beauty doin ? That's got sound like the B' Master's big brother ! Art

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 8:49 am
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Got the amp back Friday and had gone up to Bakersfield to pick up a Fender 2-12 cabinet that happened to be a Bandmaster Cab - got a great deal on it.

Fired it up on Saturday, and I'm in tone heaven; this is even with the Celestion 12's vs. the Warehouse G12C that the amp was voiced for.

Modded a eBay back panel so that the upper left section doesn't crimp the power cord right as it exits the chassis; was able to peel back the tolex and then fold it over the cut so that it looks somewhat stock.

As mentioned in a separate post, today will be pulling insulation from the cab and getting it ready for new speakers and tilt-back legs.

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'59? Bogen Challenger CHA-33, '65 Bandmaster, '65 Tremolux, 65 Showman;
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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 10:13 am
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Nedo, do me a favor -- run a tape measure over that speaker enclosure and check the dimensions. Height, width, and depth, please.

Arjay

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 2:54 pm
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Nedo or Arjay...are the Bandmaster cabs smaller than the 66 Bassman cabs? It looks like it is not as long as my Bassman cab?

Thanks, just trying to sharpen my eye for this stuff.

Nedo, this is going to sound fantastic either way! Keep the pics coming!

T2

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 3:04 pm
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+1, Tony.

I'm almost thinking that his cab is a Tremolux enclosure that someone modded to accept a pair of 12's. Which would also account for the fact that the anchor bushings on the top do not jive with the Showman head's slide-out brackets. The Showman and Bandmaster amps share a chassis width of 24" but the Tremolux head is an inch narrower.

Arjay

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 5:28 pm
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Just went out and measured it: 30w x 20h x 11d, which I believe are the Bandmaster cab dimensions.

Piggyback clips fit on the thumbscrews fine.

Somewhere along the way, I think I heard the bassman cab was slightly wider, but couldn't tell you.

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 5:37 pm
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Side by side view of the cab on the head, and no, I didn't move the head in-between pics...

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'74 SF Princeton; '77 SF Princeton Reverb; Dr. Z Mini Z

Our band: http://www.facebook.com/thetoysband


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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 5:41 pm
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Good job restoring that circuit. Confucious say: "The quality of the tech is inversely proportional to the mass of electrician and duct tape used." :lol:

JOC... are those sandbox resistors on the power tube used to measure bias (so their around 10-ohms each?) or were they part of that crazy AC568 circuitry that had part fixed, part cathode biased power tubes? In any event, I assumed you dumped them when reverting back to the more desirable AB763 circuit.

http://www.prowessamplifiers.com/schema ... ac568.html


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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 6:07 pm
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The original piggyback Bandmaster was a 1 x 12 tone-ring configuration measuring (you guessed it) 30"W x 20"H x 11"D. Some of these were modded right on the production line to a 2 x 12 layout, others had the same mod performed in the field (at the dealers). These first enclosures were for the most part blonde with oxblood cloth. However, some known examples of these factory-hotrodded Bandmaster cabs in blonde/wheatstraw, blonde/gold-sparkle, and even black/silver-sparkle are known to exist. Can you identify the original grill cloth color by looking at the excess wrapped around the baffle board within the cab?

Arjay

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 6:18 pm
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Retroverbial wrote:
+1, Tony.

I'm almost thinking that his cab is a Tremolux enclosure that someone modded to accept a pair of 12's. Which would also account for the fact that the anchor bushings on the top do not jive with the Showman head's slide-out brackets. The Showman and Bandmaster amps share a chassis width of 24" but the Tremolux head is an inch narrower.

Arjay


That is what I was thinking...a Tremolux cab, but his measurements sound like Bandmaster...my 66 Bassman cab is 32Lx21Hx11 1/2D...so maybe it is just an optical illusion because of the Showman head sitting on the early Bandmaster cabs, just makes the BM cab look smaller?

T2

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Post subject: Re: Just bought a Fender Showman to rehabilitate
Posted: Sun Aug 28, 2011 6:44 pm
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The first 6G6 piggyback Bassmans used a 1 x 12 tone-ring cab (just like the early Bandmasters) with those same 30" x 20" x 11" dimensions. The larger purpose-built 2 x 12 cabs measured 32" x 21" x 11". However, the 6G7 Bandmaster head was significantly wider than the later AB763 variant (26.5" in width) because it was an eight-tube chassis, with six bottles used in the pre-amp -- three of them for the "harmonic tremolo", just like the 6G14 Showman. Thus, nedo's cab was intended to mate with an AA763 or AB763 Bandmaster head *BUT* it was built to the earlier 6G7 dimensional specifications. IOW, another unexplained anomaly in "Fenderology".

Arjay

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