BillFitzmaurice.info

tartan wrote: ↑Sat Apr 05, 2025 11:04 pm I see he took his reverb.com ad down. Was it all sold?

I really don't know. He hasn't answered my emails in quite a while.

I didn't even know he had it on Reverb.

Keryn O'Shea wrote: ↑Fri Apr 04, 2025 5:59 pm Wait a minute... l didn't press the "Store" button after running the wizards
Clearly stated in the manual!

Glad you found it and slapped yourself before I had to......

Evening legends, Is it normal for a Driverack PA2 to lose the AutoEQ and crossover filter slope settings when it's been turned off & unplugged? No, that is not normal. My driveracks have been turned off and unplugged hundreds of times and have never lost settings. Are you sure that you are on t...

That coil is 18 gauge wire. The driver voice coil is perhaps 30 gauge. I'm surprised the voice coil didn't fail before the inductor did. The problem with the capacitor may have had something to do with the coil overheating. With these boxes being 14 years old.....I'm not surprised there would be an...

Took the coil off the crossover and this is what I found underneath.... IMG_4928.JPG Couldn't see the burn until I took it off. Decided to build a new low pass board and separate it from the other one......plus the size of the coil was different and wouldn't line up with the zip tie holes of the old...

Thanks so much for your quick response Bill, well appreciated. I do have some powered mains which i use and will definitely look into going this route. Make sure you get the one with enough power. The Dayton specs are almost always based on a 4ohm output. So, depending on what driver is in your Tub...

That seems so weird. Not that I'm a electronics buff at all, but I've really gotta stretch my imagination to even begin to hypothesize how something like a short in the coil could cause the noise. Wow. Better call in Agents Mulder and Skully from The X-Files to investigate. I am wondering if the co...

It's not the gauge size that matters, it's that the DCR of the 0.6 mH coil no more than 0.4 ohms. A solid core may be less expensive than an air core. This one is just under .4 DCR.......does it look ok? It looks just like the one that's in the cab now. https://www.parts-express.com/Dayton-Audio-LW...

Digging back through the plans becasue I seem to remember something about wire size of the coils....but, can't remember if it's to get the largest gauge or the smallest. And I can't find it - even looking at the old plans and the newer ones.

Okay, I did what Bill suggested in the beginning, I took out the highpass along with the array. Had just the low pass and the woofer hooked up......squealed like a pig. Examined the inductor closely and saw some seepage on the inside of the coil. In the pic you can make out a little of it up by the ...

Well, you ain't gonna' believe this, but I installed the new cap......and the screeching is back. I guess the cap was the weak link and burned up. But, the problem is still there. Could the inductors or the other caps be the culprits?

I'm at a loss.

Bill Fitzmaurice wrote: ↑Wed Mar 26, 2025 4:49 pm Without the cap the low pass is only 1st order, and at the wrong frequency.

Thanks. I just ordered two of 'em. Will be here tomorrow and I'll get this thing buttoned up. I'm glad it finally burned through - not knowing is worse than having to fix it.

I appreciate the help.

Well, Tom and Seth.....you're right! So, been testing it and it's been good everytime. I decided to jut button it up and go from there. As I was checking one last time to make sure the crossover was secured properly, I decided to feel the end of the caps to see if anything was bulging....then I saw ...

Is it possible that a cap is at fault? I wondered that maybe it is causing oscillation because I have seen caps used as an oscillation tank for DIY induction heaters. Good question. Neither cap looks damaged at all. Tested it a few more times this afternoon and tonight.....still no noise. Quite per...

Well, it's definitely perplexing.....turned it on - no noise. Put some music through it - works fine. Array is working. I'm gonna' keep running through this process for a couple of days. I've been threatening for years to convert these to CDs like my other pair. Maybe that's my next move, regardless...