Question about Dean Markley ProMag Grand Guitar Pickup

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I am trying to install it. I have put it in according to the instructions but I can't hear it through my acoustic amp. What am I doing wrong?

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When I bridge them my amp cuts off. Why does it keep doing that . are the speakers too much power or am I doing something wrong


I suspect you have your system wired up in such a manner that the amp is seeing too low an ohmage from your speakers. Check what the minimum ohms your amp will push and wire your speakers up so the load doesn't go below that figure.

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1 Answer

Volume fades when I push it even a little bit. I have an AC 90 purchased maybe a year ago. I use it with my acoustic guitar (self-installed JJB electronics piezos straight in, no preamp) and vocal mic...


This unit has a TDA8920 dual switching class "D" switching amp chip that is thermally protected. If you heat it up it will shut down to protect against overheating. Each side of this is ONLY a 50 watt amp chip HOWEVER they run it at a lower than rated voltage that limits it to about 30 watts per side. Your dial setting number have NOTHING to do with the power limits of the unit. When you use the looper, there are more frequency components added, and all these consume part of the available power. Also make sure the mics and the guitars cannot "hear" the speakers in this otherwise high frequency feedback may occur above what you can hear and use some of the capabilty... hint... reduce the treble boost... The only way to measure the power output is to put a scope or test equipment on the output and compute the power. I suspect you are driving the unit too hard. The unit should give adequate output for a 15 foot square room to a level that *********** could just barely tolerate. Yes, the power amp chip is thermally protected and if you drive it to hard it backs the power down till it cools off.

Sep 18, 2011 | Roland Ac-90 Acoustic Chorus Guitar Amp...

1 Answer

Acx1800 no bass very small volume, brand new amp.how do i put my speakers in phase?


If you are sure that the input device (I'm assuming electro-acoustic guitar) is working properly then it sounds like a clear case for return to the vendor! If it is brand new then don't even try to repair it. The phase buttons on the guitar channel are to help reduce feedback by putting the body of the guitar out of phase with the speakers. The speakers should all be in phase with each other though.

Sep 10, 2011 | Behringer ULTRACOUSTIC ACX1800 2x8...

1 Answer

I have a dean markley promag grand acoustic pick-up which connects to a plug in stap button. when i plug in there is no sound unless the volume is turned up on the amp to the max and then a very faint...


The output of this is fairly low. Do make sure you have steel strings rather than bronze for magnetic pickups like this. Make sure this pickup is oriented per the instructions.

Jul 02, 2011 | Dean Markley ProMag Grand Guitar Pickup

1 Answer

Hi ive had a fishman pick up installed under saddle of my accoustic guitar its fine but something is wrong becuase wen im slapping the strings and tapping guitar the sound goes very quiet for around 1...


It is possiblle that the sudden pulse from the pickup due to tapping is saturating the input of your amplifier, and that is what actually kills the signal. Try this into a different amp as a test. Once you do the test I can offer some suggestions to try.

Apr 23, 2011 | Fishman PRO AG-094 Under Saddle Acoustic...

1 Answer

D10sce will not work when plugged into the amp. the cord is nine ( works with my electric.) battery is new. when you turn up the volume on the controll, you can hear it in the amp, just no pick up sound.t


SUBSTITUTE Change the guitar for a friends to see if the amp is really OK. Try your guitar in a friends amp to see if the guitar is OK If the guitar is at fault its either the battery, the connection cord, the little pre amp in the guitar body (you can't fix that) or you have put nylon strings on the guitar which needs stell strings for the pickup to work. Good luck

Feb 13, 2011 | Washburn WD10SCE Cutaway Acoustic-Electric...

1 Answer

I bought my Taylor acoustic/electric brand new. It sounds great, but when i plug it into my amp no sound comes out. I replaced the battery, but it still failed to work. When i plug it in to the amp and...


If you just bought the guitar, take it back. Taylor has good warranty programs, take it back to the dealer. You may have a bad connection inside where the saddle pick up plugs into the graphic preamp, the fact that you hear a sound when you put the battery in or out indicates very little. You may have a bad preamp, like I said, if its new, don't wait get it back to the dealer or contact Taylor.

Dec 27, 2010 | Taylor Guitars 816ce Acoustic Electric...

7 Answers

Low volume on acoustic and jazz amp type


Ok, so I hope you realize the Fender FM25DSP guitar amplifier is an "entry level" NON-valve amp with a DSP chip that has model shaping tones. I am sorry but this is a toy and Fender did not spend the tens of thousands of US dollars to have built-in tones that truly 'kill". This not digital modelling like Line 6 or Fractal Audio did and so you have a problem from the start. This amp was always intended as an entry level amp for the bedroom only and never to be used on stage.
Jazz and acoustic modes have some similarities requiring mid-range boost and some rounding. Not easy to achieve with a DSP chip that costs about US$10 to manufacture. Sorry, consider using the amp for practice but look at a more serious valve amps for live on stage

Apr 01, 2017 | Fender Fm25dsp 1x10' Guitar Combo...

1 Answer

Boss 900 digital recorder


from reading instructions when you record channel 1 and 2 you are recordind channel 1 in stereo so you only recorded channel 1 try rcording on chanel 3 for vocal hope this helps

Oct 18, 2008 | Boss Micro BR Digital Recorder

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