Gather 'round the campfire, new project is a brewin' *56k, yeah right*

[PV Audio 5,000+ posts]

Haven't even tested yet, I'm waiting until I finish my homework.

 

[baseballer1100 5,000+ posts]

Homework is overrated.

 

[Eugenics 5,000+ posts]

i'm talking about the first one.

 

[PV Audio 5,000+ posts]

Oh, yes, the first one is a first-order.

 

[PV Audio 5,000+ posts]

Okay, just tried them......the tweeters don't work WTF. They work fine when given power directly, and the woofers work fine in the circuit (so I KNOW that power is going through the entire thing, otherwise it won't work), and the problem is the same in both. What the hell could be the problem? Sooo mad right now //content.invisioncic.com/y282845/emoticons/mad.gif.c18f003ab0ef8a0d9c27ca78d77a6392.gif

 

[PV Audio 5,000+ posts]

delete

 

[PV Audio 5,000+ posts]

Okay, I just did some localized testing on the x-over. The power is fine at the tweeter terminal. The power is lessened at the first inductor, and then is almost non-existent at the second inductor. What the hell is causing this? Is it because the inductors are too close or what?

 

[thylantyr 10+ year member]

Oh, and I hand drew the etches with a sharpie, should I use something else next time?

Try ink resist pen.

1.5 hrs. with agitation is suspect. I'm thinking maybe 30 minutes tops. Maybe

the etchant from radio shack is watered down, lol ...

 

[thylantyr 10+ year member]

Sanity check. Use a DMM and see if the traces are zero ohm.

Post a crossover schematic pic.

 

[thylantyr 10+ year member]

Use a DMM and see if you get zero ohms between input ground terminal

and tweeter ground terminal on the other side of the board, looks weird.

 

[PV Audio 5,000+ posts]

Lemme go get my DMM, here's the schematic:

 

[PV Audio 5,000+ posts]

Use a DMM and see if you get zero ohms between input ground terminaland tweeter ground terminal on the other side of the board, looks weird.

Okay, you're going to have to explain that more because I don't know what you're asking. I measured the traces, and they measure out at .4 ohms...is that bad? The thing is, it's the same for all of them, not just the tweeter.

 

[req 5,000+ posts]

yup. didnt read anything in this thread.

cool lemons. i suppose?

so any more pics of the thing you actually built in your house?

 

[PV Audio 5,000+ posts]

Nah, no more pics sorry. I had to rehost most of my pics and those guys were only stored on my CF card....which I cleared //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[thylantyr 10+ year member]

PCB: Does the tweeter negative terminal connect to the other gnd terminal where

you connect the amp ? ie, the big coil, I don't see it connected to input ground.