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Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: aberg on December 02, 2005, 01:20:39 PM

Title: Loose gain pot on MP-2
Post by: aberg on December 02, 2005, 01:20:39 PM
Anybody ever tightened their own gain pots on the mp-2? Sound Devices said it's a flat rate $75 to look at it, and I'd rather not spend that just to tighten a knob.
Title: Re: Loose gain pot on MP-2
Post by: aberg on December 03, 2005, 10:05:52 PM
Hmm, guess nobody knows.
Title: Re: Loose gain pot on MP-2
Post by: Teen Age Riot on December 04, 2005, 04:21:52 AM
You could put a little bit of tape around the pots so that they're taped to the front panel. It's not the nicest looking solution, but it definitely works. You can still turn the knobs, but it won't happen accidently.

(http://img.photobucket.com/albums/v283/moon-pix/mp2.jpg)
Title: Re: Loose gain pot on MP-2
Post by: F.O.Bean on December 04, 2005, 05:35:22 AM
id do that before i shelled out 75 for a flat rate fee :(
Title: Re: Loose gain pot on MP-2
Post by: aberg on December 04, 2005, 11:35:05 AM
You could put a little bit of tape around the pots so that they're taped to the front panel. It's not the nicest looking solution, but it definitely works. You can still turn the knobs, but it won't happen accidently.

(http://img.photobucket.com/albums/v283/moon-pix/mp2.jpg)

Yeah, sure is better than spending $75. What kind of tape is that?
Title: Re: Loose gain pot on MP-2
Post by: Teen Age Riot on December 04, 2005, 11:44:48 AM
What kind of tape is that?

Dunno. I found it on my roommate's floor...  :P
Title: Re: Loose gain pot on MP-2
Post by: bluegrass_brad on December 04, 2005, 02:02:34 PM
you could use heat shrink tubing instead of the tape.  Will work just as good and not leave any residue behind when you remove it.  Super cheap at any electronics store .
Title: Re: Loose gain pot on MP-2
Post by: aberg on December 04, 2005, 03:40:30 PM
you could use heat shrink tubing instead of the tape.  Will work just as good and not leave any residue behind when you remove it.  Super cheap at any electronics store .

Do you think the heatshrink would cause too much friction? (ie. make the pots too tight??)
Title: Re: Loose gain pot on MP-2
Post by: bluegrass_brad on December 04, 2005, 04:11:28 PM
I wouldnt think it would be any different than the tape. Just cleaner. 
Title: Re: Loose gain pot on MP-2
Post by: hoyt on December 05, 2005, 11:11:03 AM
I've read a few times that people sent their MP2s in to get the new spring to use with rechargeable batteries, and while SD had their pre, they just tightened the gains.  They don't advertise that they do that, but I think for the $15 for a new spring, they would tighten those just because they're a good company....

--hoyt
Title: Re: Loose gain pot on MP-2
Post by: aberg on December 05, 2005, 12:19:23 PM
I've read a few times that people sent their MP2s in to get the new spring to use with rechargeable batteries, and while SD had their pre, they just tightened the gains.  They don't advertise that they do that, but I think for the $15 for a new spring, they would tighten those just because they're a good company....

--hoyt

Maybe except, I've only had them quote me a $75 flat rate repair fee for that spring replacement. If it were $15, I'd do that for sure.
Title: Re: Loose gain pot on MP-2
Post by: Chris K on December 05, 2005, 12:30:07 PM
when i sent my mp-2 to sd last year to get the rechargeable battery mod, they tightened the gain pots and even fixed a meter light that was intermittant....all for $35.


Title: Re: Loose gain pot on MP-2
Post by: nickgregory on December 05, 2005, 12:37:20 PM
$35 was what I paid as well...that being said the product has been MD'ed for a year...increasing prices isnt abnormal on a product that you dont manufacture anymore
Title: Re: Loose gain pot on MP-2
Post by: tim in jersey on December 06, 2005, 04:11:28 PM
Another option is to pop the knobs off and insert a small rubber o-ring between the knob and the face plate. Worked like a champ for me.
Title: Re: Loose gain pot on MP-2
Post by: aberg on December 06, 2005, 04:46:25 PM
Another option is to pop the knobs off and insert a small rubber o-ring between the knob and the face plate. Worked like a champ for me.

I thought of doing that, cept I couldn't find a suitable rubber o-ring.
Title: Re: Loose gain pot on MP-2
Post by: tim in jersey on December 07, 2005, 01:13:17 PM
Another option is to pop the knobs off and insert a small rubber o-ring between the knob and the face plate. Worked like a champ for me.

I thought of doing that, cept I couldn't find a suitable rubber o-ring.

Home Depot, Plumbing dept.
Title: Re: Loose gain pot on MP-2
Post by: aberg on December 07, 2005, 01:33:12 PM
I'll have to go take a look. Thanks!
Title: Re: Loose gain pot on MP-2
Post by: poorlyconditioned on December 07, 2005, 03:53:47 PM
Another option is to pop the knobs off and insert a small rubber o-ring between the knob and the face plate. Worked like a champ for me.

I thought of doing that, cept I couldn't find a suitable rubber o-ring.

Home Depot, Plumbing dept.

I love how us tapirs "repurpose" all this household gear.

My wife is wondering why I've got all these carpenters clamps, tent poles, and duct tape.  Even though I don't do any home renovation or camping!!!

  Richard
Title: Re: Loose gain pot on MP-2
Post by: tim in jersey on December 08, 2005, 01:44:28 AM
I'll have to go take a look. Thanks!

Take a peek at the nut that retains the pots (under the knobs). The brass nuts that hold the pots are chamfered and the o-ring should fit nicely in the countersunk part of the retaining nut. Drop the knobs back on, and apply gentle pressure to compress the o-ring just a bit. Should be just enough to tighten things up... Hope this helps.  :laugh: