Srm450v2 hi my srm450 v2 mackie power speaker has no power but the fuse is ok then iwill check and i see d62 has short and i will change still no power please help thank you..........

SOURCE: hi; My mackie srm450 is not giving bass anymore

FIrst of all this is not a repair site per se. We help by providing information that you may require to repair something.

For your specific problem, there can be many causes. The speaker itself can be defective, the amp may be blown or the crossover could be malfunctioning. Without seeing the actual unit, I cannot possibly know which is the case. These are decent units and rarely fail in this manner. In my experience, the likely problem is the speaker itself. You can contact Mackie directly for a replacement. If you have an ohmmeter, disconnect one of the speaker wires and measure across the speaker terminals. You should read either 6 or 3.6 ohms. If you read infinity, the coil is open and the speaker must be replaced. If you feel that you cannot attempt this repair, please update this with your location so I can suggest a repair facility close by.

Thanks,
Dan

SOURCE: I have Mackie SRM450v2 speakers,

Chances are if the fuse has blown, there are failed electronic components that caused the failure.

Here is a service manual that will be CLOSE to your unit, though not exact:

http://elektrotanya.com/mackie_srm450_active_speaker.rar/download.html

Scroll down to the "Get Manual" on the site and click on the link. The file is compressed. The first part is the schematic, the second the assembly and parts list. Likely the main low freq power amp has shorted transistors.

SOURCE: ONLY GETTING MUFFLED SOUND FROM

If you've changed the tweeter and the sound is still muffled the fault is with the HF amp, or the cross-over. You will have to send the amp assembly for repair as it is all surface mount components in there -nothing you will be able to fix yourself. Sorry for the bad news!