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FOSTEX 3180 Spring question

 
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netlas



Joined: 19 Aug 2010
Posts: 10
Location: sweden

PostPosted: Sun Aug 22, 2010 2:22 pm    Post subject: FOSTEX 3180 Spring question Reply with quote

Hi i bought a fostex 3180 spring reverb for a month ago.

I opened it up just to see how the springs where place (paralell or in a "Z" pattern)

They where in paralell, BUT the thing im wondering about is this:

Should there be three springs for each channel?

becuse i have 3x2 small springs for each channel a total of 12 springs!

And there isnt much of a wet "BOING" sound either. maybe the previous owner or the one before him has modified it?

Anyone knows if this is the original setup?
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interruptor



Joined: 04 Sep 2005
Posts: 1138
Location: Switzerland

PostPosted: Sun Aug 22, 2010 5:11 pm    Post subject: Reply with quote

Hi

This site has an inside view of a Fostex 3180:
http://www.xs4all.nl/~fokkie/IR.htm

Yes the 3180 seems to have 3 springs per channel (see this page). I also remember that the unit sounded rather high and not particularly boingy, when compared to a fisher spacexpander. I guess this was done intentionally to cater for the prevalent taste in sound of the early eighties.
Both, using 3 springs per channel as well as employing rather thin and tight springs helped to even out the "grit" and "boing" of the units built in the sixties and seventies.
To maximise your boing you can use one channel only and furthermore damp the two higher sounding springs with a piece of lace, cotton or whathever so that only the lowest of the three springs is audible.

regards
Daniel



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netlas



Joined: 19 Aug 2010
Posts: 10
Location: sweden

PostPosted: Mon Aug 23, 2010 11:56 am    Post subject: Reply with quote

thanks for the answer!

I will now try to damp the damn thing.

I get back with a answer of the result.
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netlas



Joined: 19 Aug 2010
Posts: 10
Location: sweden

PostPosted: Mon Aug 23, 2010 5:59 pm    Post subject: Reply with quote

ok, so, ive tested it with the muting of two of the springs and the result is defenitly better, but still not as splashy as i would prefer. but it will do for the time. maybe i should just mute it better Smile

well anyway, thanks for the help interruptor.
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interruptor



Joined: 04 Sep 2005
Posts: 1138
Location: Switzerland

PostPosted: Mon Aug 23, 2010 11:42 pm    Post subject: Reply with quote

The same thing happened to me.. I wasn't fully satisfied and eventually got a fisher spacexpander.
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