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The Trombone ForumPractice BreakPolls(Moderators: bhcordova, RedHotMama, BFW) Single bore? Dual bore?
Poll
Question: If you are given a chance to have a single bore trombone or a dual bore trombone for free, which will you choose?
The single bore one
The dual bore one
Both!!
Undecided

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« on: Apr 05, 2009, 06:13AM »

Which will you pick? :)
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« Reply #1 on: Apr 05, 2009, 07:14AM »

Erm....

What is dual bore? :shuffle:
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« Reply #2 on: Apr 05, 2009, 07:23AM »

Different diameter inners. I believe my Olds is a .492/.500.
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« Reply #3 on: Apr 05, 2009, 07:26AM »

Erm....

What is dual bore? :shuffle:

A dual bore trombone has a larger diameter tube on the bottom of the slide than the top.  I have never seen the reverse (larger diameter on the top).

A dual bore is supposed to be a miracle cure:

1.  It makes the instrument more conical to blend with conical instruments like Horns and Tubas (well, sometimes).

2.  It lets you get a "larger bore" sound with a "smaller bore" instrument (well, sometimes).

3.  It makes you play better (well, only if you practice).

Dual bores have been popular on bass trombones and some large bore tenors of late.  The King 2B is a dual bore instrument (different inside diameters of the two slide tubes).  The Bach 16 is a dual bore as well.

Personally, I own a bunch of dual bore tenors and don't see the dual bore as any kind of advantage.
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« Reply #4 on: Apr 05, 2009, 07:28AM »

I much prefer my 3B with a straight bore. The dual bores have always felt stuffy and easy to overblow. I find I have a much fuller, deeper sound on the straight bore horns.
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« Reply #5 on: Apr 05, 2009, 08:00AM »

Dual bores have been popular on bass trombones and some large bore tenors of late.  The King 2B is a dual bore instrument (different inside diameters of the two slide tubes).  The Bach 16 is a dual bore as well.
 
Personally, I own a bunch of dual bore tenors and don't see the dual bore as any kind of advantage.

Interesting. I didn't know they were more popular specifically for large bores and basses. That's exactly what I prefer, but because of resistance dynamics rather than timbre. I've never played anything as small as a 2B though. Well, not counting trumpets anyway.
 
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« Reply #6 on: Apr 05, 2009, 08:01AM »

Dual bore has a somewhat different sound.  If you want that sound, then it's a good thing.  I don't see why it would be touted as a miracle cure or an advantage.  I have a dual bore bass, and I like the sound, therefore it's a good thing for that instrument for me.
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« Reply #7 on: Apr 05, 2009, 08:50AM »

I vote both because I like "free" trombones, never have had tried a "dual bore" though so, as always, my opinion, alone, does buy coffee. Evil :D

come to think of it, I've never tried a "free" trombone either.   ;-)
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« Reply #8 on: Apr 05, 2009, 11:20AM »

I use (borrow) a Getzen 725 for my large tenor (.525/.547). It's really my only choice, but it plays well. It's definitely not as open as a straight .547, but it doesn't feel like a conical .525, either. So far, no bass with a dual bore slide has excited me, mainly because smaller pieces do not seem to like them.
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« Reply #9 on: Apr 05, 2009, 11:44AM »

Why should I choose one or the other if I can have both for free??? Pant
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« Reply #10 on: Apr 05, 2009, 01:24PM »



1.  It makes the instrument more conical to blend with conical instruments like Horns and Tubas (well, sometimes).




Trombones should stand out. Not blend, certanly not with horns and tuba's. The idea alone makes me shiver.
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« Reply #11 on: Apr 05, 2009, 05:22PM »

In theory, a dual-bore horn should blow like the smaller bore but have some of the sound qualities of the larger. It's also a way to build a horn with qualities between two standard sizes.

If memory serves, some dual-bore horns have end crooks that are sized to fit the larger bore while others have tapered end crooks. Not sure what effect that would have.
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« Reply #12 on: Apr 05, 2009, 05:27PM »

I'm a straight man all the way!
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« Reply #13 on: Apr 06, 2009, 08:04PM »

I've just swapped out my 16M slide for a 9, which is 0.485"-0.495".  This is for an 8II bell which seems to be identical to a 16 by my measurements, with perhaps some tuning slide difference.  The 16M was "woofy", backing up at volume on some middle notes,  to  , and the 9 hits these head on.  A 6 slide on this same bell speaks well also, but I have no 6 as slick as this 9. 

It may be coincidence the 9 is a dualie.  And the trombone is a system, including soft machine parts.  YMMV. 

But I'm left wondering, for those whose middle notes are reticent, is your slide bore perhaps a bit too large?
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« Reply #14 on: Apr 07, 2009, 05:12AM »

I'm a straight man all the way!

Fulfilling the needs of comedians worldwide!
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« Reply #15 on: Apr 07, 2009, 05:58AM »

quote from ddickerson:

"I'm a straight man all the way"


Fulfilling the needs of comedians worldwide!

(insert "rim shot" drum sound effect here)

quote from baileyman:

"And the trombone is a system, including soft machine parts."

in some cases, including in my case, very soft and out of shape


 Evil :D
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Allen
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« Reply #16 on: Apr 07, 2009, 09:42AM »

Single bore: Politician who likes to hear himself talk.

Dual bore:  Two of them. :-P :-P
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« Reply #17 on: Apr 07, 2009, 10:00AM »

Single bore: Politician who likes to hear himself talk.

Dual bore:  Two of them. :-P :-P


don't forget:

single bore

muzzle loader, break actiopn, bolt action, pump, semi-automatic loading, or automatic loading

dual bore

over/under or side by side

rifle or shot gun
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« Reply #18 on: Apr 14, 2009, 09:09AM »

I play a few regularly - 3B straight (0.508 straight), a Conn 50H (0.525 straight with F) and a Kanstul (0.500/0.530 dual).  Since they are all from different makers, I'm sure there are other differences besides the bore (lead pipes, materials, etc.).  For me, the 3B is the easiest blow and can blend or cut in most situations depending on how hard I push it.  The 50H is my favorite for feel, easily cutting and has a pleasant brassy sound.  The Kanstul is the one I use in 'concert band' where one of our directors tends to the long-hair serious stuff. It may be in my head, but the dual bore does seem a bit rounder in tone, but still very much a trombone (NOT a stick baritone).  I can make it cut a bit and take a nice lead over the 0.547s around me during solos, but I'm not obnoxiously cutting or anything.

So, for me, I like the dual bore in most situations.  Exceptions include first and second parts in big-band, where the cut of the small straight bores sounds nice (to me).  It could all be in my head, though :)
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« Reply #19 on: Apr 14, 2009, 05:04PM »

Quote
A dual bore trombone has a larger diameter tube on the bottom of the slide than the top.  I have never seen the reverse (larger diameter on the top).

A dual bore is supposed to be a miracle cure:

1.  It makes the instrument more conical to blend with conical instruments like Horns and Tubas (well, sometimes).

2.  It lets you get a "larger bore" sound with a "smaller bore" instrument (well, sometimes).

3.  It makes you play better (well, only if you practice).

Dual bores have been popular on bass trombones and some large bore tenors of late.  The King 2B is a dual bore instrument (different inside diameters of the two slide tubes).  The Bach 16 is a dual bore as well.

Personally, I own a bunch of dual bore tenors and don't see the dual bore as any kind of advantage.

Now...... it could be the placebo affect but it seems like I have a higher register when I play on a dual bore horn, as opposed to the same horn straight slide.
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