Oddball Compressor ... Executone M270

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pandemic
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Oddball Compressor ... Executone M270

Post by pandemic » Fri Aug 09, 2019 7:55 am

...a little bourbon infused late night ebaying has led me to another "fix-it-up" oddball piece of gear.... a SS Executone M270 compressor. It will need a power supply and info on the web is scarce so I'm reaching out to see if any of you have any info... I haven't gotten it yet but here's some porn shots from the listing... Any help would be great.. Thank you!
Image
Image
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https://i.ebayimg.com/images/g/-mwAAOSw ... -l1600.jpg
https://i.ebayimg.com/images/g/VcIAAOSw ... -l1600.jpg
https://i.ebayimg.com/images/g/bdwAAOSw ... -l1600.jpg
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Re: Oddball Compressor ... Executone M270

Post by Nick Sevilla » Fri Aug 09, 2019 8:24 am

Mmmmmmmmmmmmmmmmmmmmm.....

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Re: Oddball Compressor ... Executone M270

Post by floid » Fri Aug 09, 2019 8:42 am

Looks like germanium transistors, so probably pnp and you might want to be sure which way to hook up the p.s.
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Re: Oddball Compressor ... Executone M270

Post by drumsound » Fri Aug 09, 2019 11:08 am

Looking at it, I can't see how it won't be the coolest thing you have in the rack,

Seriously, find some dudes who are into broadcast gear, that's what it may have originally been used.

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Re: Oddball Compressor ... Executone M270

Post by winky dinglehoffer » Fri Aug 09, 2019 2:54 pm

The bigger caps look like transilytics (I think that's the name.) If they are, expect them to fail--if they haven't already. I had to replace a bunch in some old Wurlitzers once--they don't seem to age well.

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Re: Oddball Compressor ... Executone M270

Post by digitaldrummer » Sat Aug 10, 2019 6:51 pm

winky dinglehoffer wrote:
Fri Aug 09, 2019 2:54 pm
The bigger caps look like transilytics
Electrolytic.. but yes, they don't usually last more than 10-20 years - or at least are prone to fail after that long. They may "open" - then they are not doing their job - or they may short -- make sure you have a fuse on the power supply - or something in between where they are still not doing what they are supposed to do. I just powered on a friend's Carvin S1200 mixer (from 1978) and it needs caps. it passed signal but lots of noise, oscillation, distortion... but at least it did not release the magic smoke.

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Re: Oddball Compressor ... Executone M270

Post by winky dinglehoffer » Sat Aug 10, 2019 10:40 pm

transilytic is actually what I meant--much more prone to failure (in my experience) than standard electrolytics.

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Re: Oddball Compressor ... Executone M270

Post by emrr » Sun Aug 11, 2019 5:01 am

Different package than the ones I worked on, but the guts look really similar. I agree that black tubular cap type is almost always bad. Everything I said in my groupDIY thread should still apply.
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Re: Oddball Compressor ... Executone M270

Post by digitaldrummer » Mon Aug 12, 2019 6:56 am

winky dinglehoffer wrote:
Sat Aug 10, 2019 10:40 pm
transilytic is actually what I meant--much more prone to failure (in my experience) than standard electrolytics.
gotcha. Transi-Lytic was Sprague's trademarked name (but still an electrolytic cap - so could technically be replaced with a modern electrolytic and function correctly. the sound is another topic altogether...)

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