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A little added info: according to Ted Weber of Weber VST, speakers only have
polarity marked
on them so that you can wire them correctly in a sequence. (+) and (-) shouldn't
concern you
when wiring a single speaker - you can't be wrong!
Gavin
Hard to go wrong wiring one speaker---50-50 chance you'll get it right, and
nothing bad will
happen if you don't. Have fun!
So would I wire both sets of leads into one speaker?
--- In , "Gavin Ehringer"
<gavinehringer@e...> wrote:
>
> A little added info: according to Ted Weber of Weber VST, speakers
only have polarity marked
> on them so that you can wire them correctly in a sequence. (+) and
(-) shouldn't concern you
> when wiring a single speaker - you can't be wrong!
>
> Gavin
>
> Hard to go wrong wiring one speaker---50-50 chance you'll get it
right, and nothing bad will
> happen if you don't. Have fun!
>
--- In , "obmosquito" <obmosquito@c...>
wrote:
>
> So would I wire both sets of leads into one speaker?
que?
if all is well, you should be using one output from the amp ... one hot
one ground just connect them to each side of the speaker.
if you have two sets of leads, they most likly have split AFTER the
amp's output, just put that stuff away and make a new single lead.
btw, technically it doesn't matter, but I prefer hooking up
speakers 'correctly' (ground on the amp to - on the speaker) just to
avoid phase problems when conecting more then one cab.
WR
Okay, here's the deal: I broke out my schematic for my Twin Reverb Custom 15,
which is
the same diagram as the Twin Reverb Reissue - the only difference is that
instead of two
8-ohm speakers, the Twin Reverb Custom has one 15", 4-ohm speaker. According to
the
diagram, in the '65 Twin there are two main wires going to one speaker, these
have two
additional leads going to the other speaker (this is known as being wired "in
parallel," and
yields a load of 4 ohms, the proper load for a Twin Reverb). So, to go from two
to one
speakers, you take the two main wires and wire them to the single 15. You can
remove the
two wires that stem off the main wires to serve a second speaker, which you no
longer
have. YOU MUST USE A 15" speaker with a load of 4 ohms for the Twin Reverb
Reissue).
Gavin
--- In , "obmosquito" <obmosquito@c...> wrote:
>
> So would I wire both sets of leads into one speaker?
>
> --- In , "Gavin Ehringer"
> <gavinehringer@e...> wrote:
> >
> > A little added info: according to Ted Weber of Weber VST, speakers
> only have polarity marked
> > on them so that you can wire them correctly in a sequence. (+) and
> (-) shouldn't concern you
> > when wiring a single speaker - you can't be wrong!
> >
> > Gavin
> >
> > Hard to go wrong wiring one speaker---50-50 chance you'll get it
> right, and nothing bad will
> > happen if you don't. Have fun!
> >
>
P.S. I assume your Pro is wired the same way, with two 8 ohm speakers wired in
parallel.
But, I'd check this before doing any amp surgery.
--- In , "Gavin Ehringer" <gavinehringer@e...>
wrote:
>
> Okay, here's the deal: I broke out my schematic for my Twin Reverb Custom 15,
which is
> the same diagram as the Twin Reverb Reissue - the only difference is that
instead of two
> 8-ohm speakers, the Twin Reverb Custom has one 15", 4-ohm speaker. According
to
the
> diagram, in the '65 Twin there are two main wires going to one speaker, these
have two
> additional leads going to the other speaker (this is known as being wired "in
parallel,"
and
> yields a load of 4 ohms, the proper load for a Twin Reverb). So, to go from
two to one
> speakers, you take the two main wires and wire them to the single 15. You can
remove
the
> two wires that stem off the main wires to serve a second speaker, which you no
longer
> have. YOU MUST USE A 15" speaker with a load of 4 ohms for the Twin Reverb
Reissue).
>
> Gavin
>
>
> --- In , "obmosquito" <obmosquito@c...> wrote:
> >
> > So would I wire both sets of leads into one speaker?
> >
> > --- In , "Gavin Ehringer"
> > <gavinehringer@e...> wrote:
> > >
> > > A little added info: according to Ted Weber of Weber VST, speakers
> > only have polarity marked
> > > on them so that you can wire them correctly in a sequence. (+) and
> > (-) shouldn't concern you
> > > when wiring a single speaker - you can't be wrong!
> > >
> > > Gavin
> > >
> > > Hard to go wrong wiring one speaker---50-50 chance you'll get it
> > right, and nothing bad will
> > > happen if you don't. Have fun!
> > >
> >
>
--- In , "obmosquito" <obmosquito@c...>
wrote:
>
> So would I wire both sets of leads into one speaker?
>
no - make a new 2 conductor speaker cord with a 90 degree 1/4" phone
plug on one end and whatever type of connector (or solder) you want
on the speaker end. save that original cord with the baffle.
I have a 1 - 15" baffle for my Dual Professional on the way from
Mojotone - I put a piece of cardboard over the exisiting baffle with
the speakers removed, placed my D130F in position (as far the
the "right" [looking at the back of the amp] as it would go, to
balance the load with the transformers), and traced the outline of
the speaker. I sent this template to Mojotone.
On the subject of impedance, my respected tech, Bruce at Mission
Amps, assured me that the transformer tap which is connected to the
main speaker output jack is for an 8 ohm load. I know this doesn't
seem right. I have been running a 1 -12" JBL K120 (with a piece of
1/4" plywood covering the other hole) set up in my Dual
for at least 50 gigs and there has been absolutely no problem and it
sounds awesome. Certainly hasn't seemed to shorten the life of the
JJ power tubes I'm currently running. For most of our gigs the 1 -
12 JBL is great and I'm hoping a 1 - 15 will be greater.
My "Stadium" rig consists of my Dual sitting on top of a mid 60's
Bandmaster cab loaded with a K120 and an EVM12. A surf stack. I
have also run a 4 ohm load by itself in the extension speaker jack
with a dummy phone plug (open circuit) in the main speaker jack.
Boulder Bob
The Beloved Invaders
Cool idea about the template, I'll have to give that a try.
Let me know how yours turns out Bob.
Thanks for the tips Bob, Gavin and everybody. Sounds like I might be
able to take a stab at this.
-Paul
--- In , "Bob Cannistraro"
<cannistraro@e...> wrote:
>
> --- In , "obmosquito" <obmosquito@c...>
> wrote:
> >
> > So would I wire both sets of leads into one speaker?
> >
> no - make a new 2 conductor speaker cord with a 90 degree 1/4" phone
> plug on one end and whatever type of connector (or solder) you want
> on the speaker end. save that original cord with the baffle.
>
> I have a 1 - 15" baffle for my Dual Professional on the way from
> Mojotone - I put a piece of cardboard over the exisiting baffle with
> the speakers removed, placed my D130F in position (as far the
> the "right" [looking at the back of the amp] as it would go, to
> balance the load with the transformers), and traced the outline of
> the speaker. I sent this template to Mojotone.
>
> On the subject of impedance, my respected tech, Bruce at Mission
> Amps, assured me that the transformer tap which is connected to the
> main speaker output jack is for an 8 ohm load. I know this doesn't
> seem right. I have been running a 1 -12" JBL K120 (with a piece of
> 1/4" plywood covering the other hole) set up in my Dual
> for at least 50 gigs and there has been absolutely no problem and it
> sounds awesome. Certainly hasn't seemed to shorten the life of the
> JJ power tubes I'm currently running. For most of our gigs the 1 -
> 12 JBL is great and I'm hoping a 1 - 15 will be greater.
>
> My "Stadium" rig consists of my Dual sitting on top of a mid 60's
> Bandmaster cab loaded with a K120 and an EVM12. A surf stack. I
> have also run a 4 ohm load by itself in the extension speaker jack
> with a dummy phone plug (open circuit) in the main speaker jack.
>
> Boulder Bob
> The Beloved Invaders
>
