[Trombone-l] Duo Gravis -- what model???

[emrose79@sonic.net]

I think (which can be dangerous!) that the 1480, was orginally the 
Synphony Bass, with a .536 bore and .562 trigger section. The 4B was a 
.547 tenor (with large-shank receiver). The 4B(F) had a kinda unique F 
section, with the tubing forming an X, which I found interesting at the 
time. I'm guessing that the Duo Gravis was tweaked in the later '70s and 
became the 6B Duo Gravis, which would explain why I saw a DG with the 
split finger triggers.. the owner said that his parents had bought it 
for him new a few years before (this was a few years ago)  Now... didn't 
(doesn't) the Bach 36 have a .536 bore?




Elliott Moxley wrote:

>Back in the late '60s I bought a King 1480 "Symphony Tenor (Bass)
>Trombone", quotes are from the catalog that I finally found it in at the
>time.  My high school had one, and I wanted to have one of my own for
>college.  The instrument had a .536 bore, a size I've never seen since, 
>and used a large shank mouthpiece.  The bell throat was such that it had a
>pretty decent bass 'bone sound, especially with a 1 1/2 G.   At the time
>the 1490 was the other King bass, and was known as the Duo Gravis.  As far
>as I know, neither the 1480 or 1490 had a "B" number at the time, although
>the 1490 apparently later became the 6B.  I've seen a mention of the 5B,
>but IIRC that was a 4B with a larger bell. 
>
>Was the 1480 a design that eventually got tweaked, bore and bell taper,
>into becoming the 4B?  It seems that the 1480 dropped out of sight when the
>4B came along.
>You still see the 1480 on eBay from time to time.  I love the descriptions,
>like "King valve trombone with two tips", tips meaning mouthpieces, of
>course-
>
>
>  
>
>>The Duo Gravis refers to the 6B.  The 7B and 8B were different animals 
>>with in-line valves that came along later.
>>
>>Eric Swanson
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