8mm Forum: A question for Steve Klare (and possibly for others "in the know")

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Topic: A question for Steve Klare (and possibly for others "in the know")

Maurizio Di Cintio
Jedi Master Film Handler

Posts: 977
From: Ortona, Italy
Registered: Jan 2004

posted December 27, 2018 05:00 AM

Hi, forum members. As of recently I've been tinkering with the idea it might be possible to use VHS VCR videoheads to replace Eumigs Series 900 worn sound heads.

To better explain: VCR's videoheads are very small, once removed from the head drum where they are factory mounted and adjusted. They could be somehow inserted in the Eumig head assembly once the original coils and gaps have been removed without damaging the ceramic cast which contains all four gaps (and coils). I have no idea as to how to accomplish this, but I'd deal with that later, depending on the ansewer to the following...

So the question is: what are the chances such heads, being so different from the original heads, might interface properly with the original sound PCB? AND in case they don't, could it be possible to replace a few components so as to make the "implant" possible? What are the important parameters to check (impedance? etc?).

Of course any additional input is welcome... Thank you.

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Maurizio

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Steve Klare
Film Guy

Posts: 7016
From: Long Island, NY, USA
Registered: Jun 2003

posted December 27, 2018 05:57 AM

Thanks for the compliment, Maurizio!

-but I’m not that well versed in sound heads.

(I do much better with the amplifier and other things downstream.)

I would guess that unless the dimensions lined up perfectly, it would be game over right there. Alignment is so critical.

It does make sense that the heads would have started out used in some other kind if device: Super 8 sound was a tiny market segment.

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All I ask is a wide screen and a projector to light her by...

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