Martin Mammoth 6/4

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b.williams
4 valves
4 valves
Posts: 615
Joined: Fri May 29, 2009 9:32 am

Re: Martin Mammoth 6/4

Post by b.williams »

Looks like a Conn 20J.
Miraphone 191
Yamaha YBL-613HS Bass Trombone
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EdFirth
4 valves
4 valves
Posts: 583
Joined: Sun Mar 21, 2004 7:03 am

Re: Martin Mammoth 6/4

Post by EdFirth »

There are similarities but the bore of the Martin is in the low 700's while the Conns were .773. The bell is also more angled up on the Martins and although they didn't sport "short action" valves the stroke isn't much longer. Martins also had two bits as part of the leadpipe(sequential) . The Martin mammoths also predate the 20J's and were way more expensive. Just some useless information. Ed
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