Rock the Garage!

**Alien_Shore** · February 10th, 2013, 03:56 PM

Originally Posted by cradeldorf

PCD Is the Bomb!! I'm running the crossovers I did in it. Nice work Buddy.

Do they sound good? Or have you not built them yet?

Thanks CD. Yeah, I have one channel built, still tweaking and deciding how I want the "finished model" to look. It sounds very good. The last change I will make tonight is to put in a variable resistor for R1 in the notch filter to be able to dial in the upper mids. And yes, I've very glad you put me onto PCD!! I'm very pleased with this software!!

**hemicuda** · February 10th, 2013, 10:44 PM

If you don't mind me asking, what is PCD? I'm assuming it's a schematic software... Where do I get it? Thanks!

Originally Posted by Alien_Shore

Thanks CD. Yeah, I have one channel built, still tweaking and deciding how I want the "finished model" to look. It sounds very good. The last change I will make tonight is to put in a variable resistor for R1 in the notch filter to be able to dial in the upper mids. And yes, I've very glad you put me onto PCD!! I'm very pleased with this software!!

**Altec Best** · February 11th, 2013, 01:52 PM

Originally Posted by hemicuda

If you don't mind me asking, what is PCD? I'm assuming it's a schematic software... Where do I get it? Thanks!

It's Jeff Bagby's software "Passive Crossover Designer"

jbagby

**oface1** · February 13th, 2013, 05:06 PM

Makes me want to set up my last pair of 817's loaded with 921-8a's and the sapre 811's, all I need are some drivers!

Nice work....

**Alien_Shore** · February 24th, 2013, 06:07 PM

OK, I've gotten my "production" parts assembled in the final XO design.

This thing sounds great! I did an A/B compare today with the new passive XO on the right channel and the active XO on the left channel. Surprisingly, on the best mono recording I have (Nat King Cole After Midnight), the passive actually sounds just a tad bit better than the active. Woot. I consider that to be a smashing sonic success. The big 14 gauge perfect lay inductors in the HF section sound clearly better than the prototype inductors, and I replaced the 12 ohm resistor in the RLC notch filter with a pot so I can adjust the attenuation.

**Bobabode** · February 24th, 2013, 06:16 PM

Love the novel use of perf board! ;^)

**cradeldorf** · February 24th, 2013, 06:19 PM

That's awesome Mike!!! Glad to hear it worked for you.

**Alien_Shore** · November 22nd, 2013, 12:06 AM

Just wanted to post a quick update on this.
As some of you may have noticed, I upgraded the garage woofers with new GPA 416s. I also modified the crossovers to accommodate the differences in the woofers electrical behavior. After a few months of break-in, I have to say that the GPA 416s are phenomenal. Their sound is so full, so musical (its that lovely mid-bass sound), and clean. I may try to get a quick video with my HD camera and see if it can come close to conveying the awesomeness of the sound I enjoy in my garage...

pe8

**mattvandyke** · March 18th, 2014, 06:55 PM

I'm thinking of building the same crossover as I have some 802-8g's and a 416b. I've done the Z19's but want something simply for this project as they are out in the garage.

Question, my LF is 8 ohm - your LF design is 16 ohm. What would I need to change on the LF circuit for this design to work on a 8 ohm LF 416?

**Alien_Shore** · March 19th, 2014, 11:19 PM

Originally Posted by mattvandyke

I'm thinking of building the same crossover as I have some 802-8g's and a 416b. I've done the Z19's but want something simply for this project as they are out in the garage.

Question, my LF is 8 ohm - your LF design is 16 ohm. What would I need to change on the LF circuit for this design to work on a 8 ohm LF 416?

Here's the revised schematic for the 416:
Garage 1000 XO.jpg