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Preamp noise caused by humidity? What does it sound like?


rb1138
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Hey all,

I need some assistance. My CS3e made a pop-pop-pop sound while out on the field.

Situation was. Shot on the beach for a few hours. Then went inside car. We shot some stuff with doors open. Then we closed the doors. Then while we're recording some VO and wild lines, I hear some pop-pop-pop. Fast and intermittent. There were just three I think.

I would attach a sample, but I can't find where it is. It was a pretty quiet sound. I'm sure it'd be audible though, once amplified enough.

Is it preamp motorboating caused by the shift in humidity?

Is it RF?

I've often gotten a similar sound with the Schoeps, but I figured it was humidity or RF with that mike (it's a T-powered one so I expect it sometimes).

Thanks,

Sawrab

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Which serial number is your mic? Mics with s/n below 2791 are prone to RF intereference () and also motorboating caused by phantom power supply has been detected on early models (but i don't remember where I've read it...)

S/N is 1805. I've gotten the RF mod though so hopefully it isn't that....

Sanken offer cs3-e repair/upgrade service, it takes a while but it will bring back your mic to new. For north america contact plus24

http://www.plus24.ne...ken/dealers.asp

What are they repairing? Can the motorboating be reduced/neutralized?

Otherwise I'll try out Dan Ostroff's methods or a big ol' dessicant.

Sawrab

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" What are they repairing? "

their products that aren't working properly.

Right. I would like to know if it could be fixed locally (if it's some specific modification). I'd rather not ship it to Japan. Being without the CS3e for that long just seems like a nightmare....

Sawrab

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Winter - I never had a problem with the 442 and CS3e either. That article was the only place I remembered reading anything about motorboating and Sankens.

(null)

Find it! It's a Glen Trew review written here: http://www.groupsrv....about99080.html

He said "It should also be stated that, since the CS3 is an electret, some 48V

phantom preamps go into "motorboating" (low freq oscillation) with the

CS3. Though some Sound Device preamps have been the most discussed

with this issue, it is not limited to them. In fact, the same

phenomenon can be created with the robust Cooper 106 mixer"

@Srab1138: Which mixer were you using?

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" I would like to know if it could be fixed locally "

ok, fair question, so who should you ask ?? Plus 24 = <cap>

Plus24 is what I send it to? That link gives me a number of Sanken dealers, one of which is PSS. I'd love to bring it to Pro-Sound Services in NYC. It's where I did the RF mod.

Sawrab

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" Plus24 is what I send it to? That link gives me a number of Sanken dealers, one of which is PSS. "

Plus 24 is the USA distributor, and as close to the actual manufacturer as you need to get in the USA...

PSS, being one of our fine production sound specialist dealers , carries the products plus 24 distributes, and is your first line for problems and issues. I suggest you contact their service department for further consultations, and I'll bet that they will be glad to handle, and get resolved, your issue.

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" Plus24 is what I send it to? That link gives me a number of Sanken dealers, one of which is PSS. "

Plus 24 is the USA distributor, and as close to the actual manufacturer as you need to get in the USA...

PSS, being one of our fine production sound specialist dealers , carries the products plus 24 distributes, and is your first line for problems and issues. I suggest you contact their service department for further consultations, and I'll bet that they will be glad to handle, and get resolved, your issue.

Thank you very much ;D

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  • 3 months later...

May be a good idea to see if you can locate the damaged files. I used to lug around a PD-6 (not to say they are comparable) with a headphone jack that went crazy in the humidity. I was on my way to a meltdown, when I realized it was not making it to any of the recordings. Obviously still an issue, but potentially a cheaper solution.

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