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The tone-ring is just a part of the porting system. As you say, it moves
the speaker flush (at least close to) the front baffle of the cabinet. It
probably also helps reflect the port sound waves in the forward direction.
There may be other more technical reasons for its design (I think it's
called a "heimholz resonator") but I don't know any more specifics.
What I can say is that having the speaker and the port in the same place in
the cabinet makes a different tone than a tube port elsewhere in the
cabinet, especially if the cabinet is going to be miked.
Mel
-----Original Message-----
From: rock verb [mailto:]
Sent: Thursday, July 31, 2003 1:13 AM
To:
Subject: RE: [SurfGuitar101] Speaking of Showmen: Tone Rings / Nebulas
thanks Mel,
do I understand correct that the tonering itself doesn't do anything, but
is
just a contructional part of the cab-design, meant A) to move the speaker
a
little forward in line with the front, and B) to 'bend' the bassreflex in
a
forward direction?
wannes
>From: "Mel Waldorf" <>
>Reply-To:
>To: <>
>Subject: RE: [SurfGuitar101] Speaking of Showmen: Tone Rings / Nebulas
>Date: Wed, 30 Jul 2003 17:34:57 -0700
>
>Hopefully, this is a better explanation:
>
>
>Mel
>
> -----Original Message-----
> From: Brian Neal [mailto:]
> Sent: Wednesday, July 30, 2003 5:31 PM
> To:
> Subject: RE: [SurfGuitar101] Speaking of Showmen: Tone Rings / Nebulas
>
>
> I sort of remember Mel explaining this once, so I searched the
archive.
>
>
>
> I still don't fully understand this though...
>
> BN
>
> > So its my understanding that tone rings let the speaker "breathe".
If
>a
> > speaker is in a sealed cabinet, it has to work a lot harder to
> > move because
> > of the air trapped in the cabinet. If you slap on tone ring on
there,
>it
> > lets air in so the speaker can push out, and lets the air out so
> > the speaker
> > can move in. Since the speaker in a tone-ring cab has an easier
time,
>it
> > sounds better (or thats how it was explained to me).
> >
> > So......how come Dual Showman cabinets don't have tone rings? They
are
> > completely sealed up with no porting. At least mine is.
> >
> > Thanks,
> > BN
> >
>
>
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