Hi ihave just bought a dp-02 ihave a pair of alesis monitors active how do i plug them in thanks ever so

Hi, I'm having the same problem with one of mine M1 Active 620. Please have you found out characteristics of D5 Zener diode, voltage?

There clearly is a fault in the sub's amp section. It's probably the main part that does most of the work. It will need to be replaced.

I see from the manual there are several controls on the speaker that could affect the sound in the way you describe (gain, hi- and mid-boost, acoustic space). Why don't you compare the actions of each control with the working speaker as the standard and a test tone or FM noise as the source? It might help you to identify a specific internal function that has changed. After that, someone's going to have to crack it open and do surgery.

You might also try using the opposite input (TRS vs XLR) than the one you're using. It might reveal something.

Check for the fuse in the high frequency amplifier.

Check your output conections and shielding, try swapping over l for r and see if the problem moves.
Check each monitor on some other source ipod etc.

if it always the same unit with fault then you need a tech.

I dont think its anything to worry about, if the unit didnt turn on at all or the LED flickered then you would need a capacitor or 2 changing; check here; http://www.neufeld.newton.ks.us/electronics/?p=232

Hi Mate, This seems to be a common problem now, go here looks like you need a new capacitor or two, possibly a resistor aswell depending.

http://www.neufeld.newton.ks.us/electronics/?p=232

Hi, You will need to contact Alesis direct and they will decide whether to email you a copy of the schematics, as they are copyrighted, etc.

Hi Mate, Im no electrician so Im not 100%, basically I think it would last but it wouldnt be a long term fix as it really needs to be 105c.

Cheers

Hello!
my speaker Alessis M1 Active 620, with a roar is very strong in the speaker, the potentiometer does not attenuate, change the volume. Ja switched capacitor C8, based on my research of other users, but got no result. When you press the power button, the LED lights in blue, and even change the color to red, producing a noise (snoring) very strong.
help!
Please help me!