ADA MP-1 problems - Jemsite
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post #1 of 8 (permalink) Old 09-04-2009, 05:03 PM Thread Starter
 
Join Date: Feb 2009
Location: Liverpool
Posts: 106
ADA MP-1 problems

ever since i got my mp-1 into the studio and cranked the volume ive noticed that if the volume is up too high using the volume knob on the mp-1, i get a horrific high pitched screecing noise, so i have to have it turned rather low, and turn my poweramp(peavey 50/50) on full.. also impowering 2 4x12's and still i can only just get loud enough for practice in the studio..
i plug into my ada, then out of the ada and into my art sgx effects unit, then from the sgx to the peavey, then from the peavey to each cab...ive tried bypassing the sgx and i stil get the horirble noise, so im guessing its definitely the ada.
if i could turn it up properly i would be able to turn my poweramp down and be alot louder
could it be that it needs new tubes?
anybody had similar experience?
thanks
-John
John.E.Fawkes is offline  
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post #2 of 8 (permalink) Old 09-05-2009, 08:22 AM
 
Join Date: Jul 2008
Location: Adelaide , Australia
Posts: 1,297
Re: ADA MP-1 problems

A lot of the volume seems to be in the bass parameter of the MP1. To get some good volume the bass should be around 12 and up. Do that first to get your ideal volume level then build/eq the rest of the sound to suit it. My front output level never goes past 11 o'clock and i always run a noise suppressor between the guitar and the MP1 input. PERFECT!
corey j grieve is offline  
post #3 of 8 (permalink) Old 09-07-2009, 11:19 AM Thread Starter
 
Join Date: Feb 2009
Location: Liverpool
Posts: 106
Re: ADA MP-1 problems

thanks, although its not a problem with the sound itself. its the noise its making, i can get my perfect sound out of it, its just that when i crank the volume knob past 9 o'clock it makes a horrible screeching noise
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post #4 of 8 (permalink) Old 09-07-2009, 11:45 AM
 
Join Date: Nov 2006
Location: Delaware
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Re: ADA MP-1 problems

check your tubes. May be a microphonic one.

Do you have a spare set to test?
finstah is offline  
post #5 of 8 (permalink) Old 09-07-2009, 09:46 PM Thread Starter
 
Join Date: Feb 2009
Location: Liverpool
Posts: 106
Re: ADA MP-1 problems

na i dont, im looking into getting a new set though, any recomendations?
also wheres a good place to get em..im guessing evilbay?
thanks for the help
John.E.Fawkes is offline  
post #6 of 8 (permalink) Old 09-08-2009, 04:56 AM
 
Join Date: Dec 2008
Location: Australia
Posts: 422
Re: ADA MP-1 problems

Are you sitting right in front of your cab/amp? You get heaps of feedback if you do, try moving around, see if it stops. If not, it may be a tube as finstah suggested.
littlephil is offline  
post #7 of 8 (permalink) Old 09-08-2009, 08:42 AM
 
Join Date: Nov 2006
Location: Delaware
Posts: 643
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Re: ADA MP-1 problems

At ADADepot we all (well most do ) suggest running the high graded JJ tubes. We all buy from Doug at Doug's Tubes. Some peeps by from Bob at Euro Tubes. Doug is in NYC/CT Bob is in Oregon.

Some like the Sovtek's, Chinese 9th gen. There are a million different tubes. For high gain stick with AX. Less gain there are AU's and I think even an AY. Talk to either of these guys and they'll steer you in the right direction.

Both are good dudes.
finstah is offline  
post #8 of 8 (permalink) Old 09-08-2009, 10:24 AM Thread Starter
 
Join Date: Feb 2009
Location: Liverpool
Posts: 106
Re: ADA MP-1 problems

actually, i did try moving to the opposite side of the room one time, and the noise was somewhat reduced, although still there.
but weirdest thing was... i dont have a rack case yet.. so im just sitting my units on top of each other.. but i took my ada off my sgx and the noise was completly gone when it wasnt close to the sgx, so i then separated all 3 of my units... but the noise was still there anyway, just weird the way it went temporarily when i took the ada off the sgx.
maybe that was cause i was holding it though? some sort of grounding :/ it really is confusing to me, i think i will just replace the tubes though regardless, then if its still screeching i know it must be something else
John.E.Fawkes is offline  
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