Is it kosher to discuss the crossovers?

Helpful hints on how to build 'em, and where to get the stuff you need.
Message
Author
User avatar
DrDoug018
Posts: 222
Joined: Fri Jun 30, 2006 11:51 am
Location: Dublin, OH

Re: Is it kosher to discuss the crossovers?

#31 Post by DrDoug018 »

mpm32 wrote:Is Doug's drawing correct?

The pics are nice, and I like Harley's but it's hard to see the connections in the pics.


Thanks
I'd like to know that too :-)

FWIW, the cabs sound great and the EQ curves I got from the RTA seemed to be reasonable (I need to post those).

I also edited my earlier post with the diagram to include a photo of the actual crossover. I probably should have used something more secure than hot melt to attach the components to the board. I'll go back in this summer and add some straps or something.

Doug

2 DR250
2 T39 (20" 3012LF)
2 Jack 10
1 Omni 10

mpm32
Posts: 155
Joined: Wed Oct 01, 2008 10:16 am

Re: Is it kosher to discuss the crossovers?

#32 Post by mpm32 »

Well, if they work and everything sounds good, I'm going to use your diagram.

Thanks.
https://www.facebook.com/CharlieDontSurfCT/

2-DR250
2-Wedgehorn 8
2-16" T39

bzb
Posts: 1567
Joined: Mon Oct 05, 2009 4:16 pm
Location: Atlanta, GA

Re: Is it kosher to discuss the crossovers?

#33 Post by bzb »

I think Doug's tweeters are reversed. But in the plans (and in this thread) it says to check polarity afterward, so I'm not sure.
Bobby Shively
Purveyor of fine aged hip hop
Traktor S4 - Vestax VCI-100 - TTX - MOTU Ultralite - Yamaha 01V

Built:
T39 13" BP102, 24" 3012LF - AT - OT12 2512 - SLA Pro - T24 - Jack 10
Powered by XTi 1000 & 2000

User avatar
gnemonic
Posts: 5
Joined: Thu Feb 24, 2011 4:04 pm
Location: Puerto Rico
Contact:

Jack 10 crossover problems. Please help

#34 Post by gnemonic »

Hi. I made a crossover using the compression driver for the hights and low pass for 1-10. 2Kh 8omh. Place everything in the same board. It sounds great but when I turn the volume up the, sound compresses and a weird noise comes out. Could the coils be talking to each other? I forgot to place the big low pass one at 90 deg. I followed the intructions but I could be missing something.
This is my first crossover project so I'm a little lost.
Thanks in advance for any help. :noob:

User avatar
LelandCrooks
Posts: 7242
Joined: Thu May 04, 2006 9:36 am
Location: Midwest/Kansas/Speaker Nirvana
Contact:

Re: Is it kosher to discuss the crossovers?

#35 Post by LelandCrooks »

Pic please.

I had my first bad one a while back. Squealed like a stuck hog when the customer cranked the cab. Never made a peep when I tested it before shipping the cab.
If it's too loud, you're even older than me! Like me.
http://www.speakerhardware.com

User avatar
Kirk Baptista
Posts: 27
Joined: Mon Feb 28, 2011 4:57 pm

Re: Is it kosher to discuss the crossovers?

#36 Post by Kirk Baptista »

Just finished my first one, thought it came out OK.

Have no idea how it sounds yet, but soon!
Attachments
crossover.JPG
Custom Fender 5 string PBass
Ibanez SD 530 4 string
Gallien Krueger MB Fusion
2 Jack Stack, Kappalite 3012HO

yeahforbes
Posts: 24
Joined: Thu Jul 29, 2010 1:29 pm
Location: New Jersey
Contact:

Re: Is it kosher to discuss the crossovers?

#37 Post by yeahforbes »

What's an easy way to mount a crossover into a Wedgehorn? Putting it on the access panel would be simple, but I'd prefer not to have wires connecting it to the rest of the cab. The side panel with the jackplate would be ideal, but the proximity of the horn side makes driving screws just about impossible. I'm a bit scared to PL it there, in the interest of repair access.

User avatar
N.Webber
Posts: 244
Joined: Wed Nov 22, 2006 1:17 pm
Location: ISRAEL
Contact:

Re: Is it kosher to discuss the crossovers?

#38 Post by N.Webber »

yeahforbes wrote:What's an easy way to mount a crossover into a Wedgehorn?
Image

:)
Authorized Builder
- 6 DR290
- Omni10.5
- AT, TAT
- Tuba 48
- 2 WH10
- Truck Tuba
http://www.boniton.co.il
http://www.bt-12.com Balanced Tilting Sounds Better...

yeahforbes
Posts: 24
Joined: Thu Jul 29, 2010 1:29 pm
Location: New Jersey
Contact:

Re: Is it kosher to discuss the crossovers?

#39 Post by yeahforbes »

Nice! If only I hadn't already strapped down my parts in a layout an inch wider than the plate... haha. I managed to get it on the side where I wanted it... couple screws on the close side, right by the large coil, and it's way more sturdy than I thought it would be.

Bruce Weldy
Posts: 8539
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: Is it kosher to discuss the crossovers?

#40 Post by Bruce Weldy »

I just drilled a hole in 'em and put 'em on top of the mattress topper using a wood screw (not drywall) in two places. Screw 'em in by hand slowly. You can get plenty of grip in 1/2in. ply without going through.
WH10 Build 083 small.JPG

6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

User avatar
LelandCrooks
Posts: 7242
Joined: Thu May 04, 2006 9:36 am
Location: Midwest/Kansas/Speaker Nirvana
Contact:

Re: Is it kosher to discuss the crossovers?

#41 Post by LelandCrooks »

Pull the mattress topper out from under it. Use spacers of some kind. I have some 3/8 nylon ones I supply with prebuilt xovers. If there was ever a problem, the resistors can get hot. Mattress topper burns very nicely.
If it's too loud, you're even older than me! Like me.
http://www.speakerhardware.com

Bruce Weldy
Posts: 8539
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: Is it kosher to discuss the crossovers?

#42 Post by Bruce Weldy »

LelandCrooks wrote:Pull the mattress topper out from under it. Use spacers of some kind. I have some 3/8 nylon ones I supply with prebuilt xovers. If there was ever a problem, the resistors can get hot. Mattress topper burns very nicely.
Can it get hot enough to burn through the 1/4" plywood it's glued to?

6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

User avatar
LelandCrooks
Posts: 7242
Joined: Thu May 04, 2006 9:36 am
Location: Midwest/Kansas/Speaker Nirvana
Contact:

Re: Is it kosher to discuss the crossovers?

#43 Post by LelandCrooks »

No, but the ply will transfer the heat.
If it's too loud, you're even older than me! Like me.
http://www.speakerhardware.com

User avatar
DJPhatman
Posts: 5411
Joined: Mon Aug 14, 2006 5:08 am
Location: Warren, MI
Contact:

Re: Is it kosher to discuss the crossovers?

#44 Post by DJPhatman »

Bruce Weldy wrote:Can it get hot enough to burn through the 1/4" plywood it's glued to?
It can also get hot enough to cause the glue to soften and release its' bond. Run some zip strips over the resisters and through the 1/4" ply.
I know money often seals the deal, but seriously, quality is an investment, not an expense... Grant Bunter
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice

Post Reply