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Author Topic: M49 inner rubber suspension piece needed- solution found  (Read 349 times)

Vertigorecording

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  • Real Full Name: Charlie Bolois
M49 inner rubber suspension piece needed- solution found
« on: July 12, 2021, 02:52:20 PM »

Hello Everyone,
Does anyone know where I can purchase a replacement M49 inner rubber suspension piece to fix one with a badly deteriorated
original rubber piece? Thanks in advance.
-Charlie Bolois
Vertigo Recording Services
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klaus

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Re: M49 inner rubber suspension piece needed
« Reply #1 on: July 12, 2021, 03:52:41 PM »

Hello Charlie, I assume you mean the lower amp suspension mounted in the bottom bell, not the foam buffer embedded in the basket.

Two options:

1. James Gangwer (james@jamesgangwer.com) had a few of those fabricated a while ago.

2. Cut yourself a new one using an original as template. Pay attention to rubber density (important, to find the middle ground between shock absorption and the positional stability for the amp) and thickness.
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Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

Vertigorecording

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Re: M49 inner rubber suspension piece needed
« Reply #2 on: July 12, 2021, 04:31:11 PM »

Thanks Klaus,
Yes I was referring to the lower amp suspension, mounted in the bottom bell. Not the foam upper piece.

I will reach out to James. If that doesn't work out, I had carefully traced out a new replacement one that I got a few
years back so I might have to go that route. I would have to experiment with procuring the correct rubber and all of that
so that may be time consuming.

Thanks again for your helpful suggestions.
-Charlie Bolois
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Vertigorecording

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Re: M49 inner rubber suspension piece needed- solution found
« Reply #3 on: July 14, 2021, 06:18:29 PM »

I ordered a 6"x6" piece of 1/8" thick neoprene rubber sheet from McMaster Carr. Part number 1370N15, Durometer 30A.

I actually ordered three different durometer types but the 30A was just right, the others too stiff.

The disc is 65.5mm in diameter with a 25.5mm hole cut in the center. Make a 3mm hole about 9mm from any outside edge and then cut a slot to it, from outside to the 3mm hole but no farther. It works really well.
-Charlie Bolois
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klaus

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Re: M49 inner rubber suspension piece needed- solution found
« Reply #4 on: July 14, 2021, 08:11:14 PM »

Excellent advice and resource. Thank you!
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Klaus Heyne
German Masterworks®
www.GermanMasterworks.com
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