Wednesday, September 5, 2007

Still nothing, I know.

I'd like to apologize to the monsoon user base out there. I really did start this blog at the worst possible time. First I was buying a new house and moving, then two months after getting settled in, I lose my job. Needless to say, I'll not be touching this blog until I am once again gainfully employed and ready to tackle this project. Feel free to stop by now and again as I do promise that I will be using the blog. Also, feel free to e-mail me any updates or news that you might have concerning Monsoon or the Monsoon family of Multimedia systems as I will want to include that when I am able to take the time to post.

Thank you for your patience.


DB said...

Hi there! I'm trying to construct a makeshift puck for my planar media 9's using a Pyramid CR-74G car crossover. However, it appears that some voltage needs to be applied to the mute pin (I don't know what else it could be) on the DIN connector for the audio to pass through to the amp.

Can anyone who's either got a puck, or has some more electronics knowledge than me, help figure this out? I'm nervous about frying one of the components by sending too much voltage. Could someone with a puck measure the voltage from the board inside the sub on that pin?

Is it possible that the mute pin is just connecting the circuit to power the TI TL074CN op-amps?

Thanks for the help...

db said...

Actually, what would be really great is a couple good pics of the inside of a puck!! Anyone, anyone??

Anonymous said...

I might be able to do that [pictures], sometime this week probably. Although I thought my puck was messed up and it turned out something had shorted in the subwoofer itself, but still not sure what. You sure the puck is your problem?

Alistair said...

Here you go, man, sorry for the delay. It won't let me post thumbnails, so each of these links to an ~645K image. Hope it helps a little.

Alistair said...

Oops those got cut off at the end, but if you highlight them and copy the text you can grab the complete url even though it looks like it's not there. Last part for each url should be:


db said...

Thanks for the pics! Sorry it took me so long to look at this thread again. It turns out that I fried the transistor, zener, and regular diode that were part of the 9V voltage regulator. So, it took this newbie to electronics a long time to figure out what all those bits were and acquire suitable replacements.

I knew it was a puck problem because I acquired these speakers without a puck. The amp IC requires voltage on the "mute pin" to be put into operational mode. With no voltage, the outputs are suppressed and the amp is in standby mode.

So, I fixed the regulator and made a workable "puck" using a switch, green diode, three input RCA jacks, and the Pyramid crossover.

I'm happy to look at these pics now to see what else could be done. There's a little hum in the sub when I turn it on that needs to be worked out.

I'll post pics of the solution soon.

Thanks again...