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Hi mel that's cool, I've a twin running a single 15" too.
Unfortunately though it's the 135 watt twin. I deultralinearized (sic!) it
though. A different league alltogether. It runs an 8ohm ALTEC 15" 150 watt
broadband PA speaker in a homemade cab (with chrome dustcap!). Not quite a
showman but as close as I can get with the little money I have, and it gives
good surf tone. I built a new cab for the twin head though, bassman specs.
can you give more info on what the tone ring does to the freqencies? I might
want to try it out sometimes.
btw, the 6l6's are grouped as follows the two outside pairs are parralelled,
and then the two pairs are paralelled with eachother. to have the amp
working half power/8ohms you have to
have one 6L6 of each outside pair. You can pull the two outside or the two
inside tubes.
I did this with my amp/speaker combination and as it turned out, it sounded
way better just with the 4 tubes driving the 8ohm speaker.
>From: "Mel Waldorf" <>
>Reply-To:
>To: <>
>Subject: RE: [SurfGuitar101] Re: what's with "Dual"
>Date: Tue, 29 Jul 2003 19:31:02 -0700
>
>A Dual Showman should be fine with an 8 ohm load, with no modifications.
>I've got a '67 Twin Reverb in a combo cab driving a 8 ohm 15" speaker (I've
>used both a JBL K130 and a Rola? bass speaker). I've had it in this setup
>for years with no problems. In fact, a 4 ohm rated head running an 8 ohm
>load will have a reduced total output (probably in the range of 60-70W for
>a
>DS) and a darker tone than with a 4 ohm load. Conversely, a 8 ohm rated
>head running a 4 ohm load will run hotter than stock, and has a brighter
>tone than with the expected load. Never go outside the half to two times
>expected load range with a vintage Fender. I wouldn't count on amps from
>other manufactures as being able to support anything but the expected load.
>
>As for the tone ring cabinets, the tone ring suspends the speaker in the
>center of the port. I never measured exactly, but I think the port on the
>Showman cab is about 18" diameter. The bass response on these cabinets is
>amazing, and the chrome dustcap on the JBL peeking through looks so cool!
>
>Mel
>
>
> -----Original Message-----
> From: Brian Neal [mailto:]
> Sent: Tuesday, July 29, 2003 5:38 PM
> To:
> Subject: RE: [SurfGuitar101] Re: what's with "Dual"
>
>
> I bought a Dual Showman ('66) this year. 85 Watts with 2 x 15" speakers.
>
> Like Phil said, the only difference between a Dual Showman and a Showman
>is
> one resistor and the output transformer.
> Fender was inconsistent about the faceplates though. Sometimes they said
> "Dual Showman" on them and sometimes they just said "Showman" even
>though
> they were technically Dual. Mine just says "Showman"
>
> You need to check the output transformer code to be sure it is a Dual
> Showman. Although some of them do indicate Dual Showman on the tube
>chart
> (mine doesn't). I can look up the codes for you if you want.
>
> The stock speakers used were JBL-D130F's or JBL-D140F's. These are 15"
> speakers. I don't know where you got 13" Jerry, I've never heard of
> that....?
>
> I would be wary about running a Dual Showman through a single 8 Ohm
>speaker
> load for very long....! My amp tech told me that I could do that, but
>only
> if I pull 2 of the power tubes first (and yes it does matter which ones,
>but
> I've forgotten which ones he said; I think it was the two outside ones
>BUT
> DON'T QUOTE ME ON THAT).
>
> $500 dollars is a good price I think if it is a black face. Make sure
>its
> not a silver face (not that their bad, its just you can get those a
>little
> cheaper maybe) or one of the early 1980's red knob Dual Showman. Be
>warned
> though, you will want to get new tubes and have the electrolytic
>capacitors
> replaced if they are original. This will add maybe $200 or more
>depending
>on
> what tubes you get and who you have work on it.
>
> Again, I'm talking about black face Showmans above. There are the
>earlier
> blonde ones, then after the black face models came the CBS silver faces,
>and
> then there were the red knob Showmans (not related at all really).
>
> The Fender Field Guide is a great resource as is the Fender Forum for
> learning about these things:
>
>
>
>
> Having said all that....I am really knocked out with my Showman. It far
> surpassed any expectations I had and continues to amaze me. I can't
>believe
> that tone is coming from my guitar and hands! If I only had the chops to
> match!
>
> Good luck!!
> BN
>
> > -----Original Message-----
> > From: Bill Bergstrom [mailto:]
> > Sent: Tuesday, July 29, 2003 4:01 PM
> > To:
> > Subject: [SurfGuitar101] Re: what's with "Dual"
> >
> >
> > Guys,
> > Thanks so much for all the help and guidance.
> >
> > The guy offered me $500 (probably plus tax)
> >
> > I'd probably be willing to take him up on it, assuming it can at
> > least put out some signal, and would work alright with the single 15"
> > cab. I just appreciate that cab so much more.
> >
> > Naturally, I'd still need to track down a cab, make sure it has a
> > Jensen D130F in it, and I'll probably re-tube it (unless that's been
> > done recently).
> >
> > Does this sound like a good deal? Or should I play it cool for a
> > little longer and see if something pops up?
> >
> > ~Bill~
>
>
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