Best technique to install crossover inside cabinet? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st September 2005, 02:33 PM   #1
BobPM is offline BobPM  United States
diyAudio Member
 
Join Date: Aug 2005
Default Best technique to install crossover inside cabinet?

I am building the Zaph L18 design and after searching the forums, I have not seen a good discussion on how to install and secure the crossover inside the speaker cabinet.

Some guides, (partsexpress and speakerbuilder.net) suggest just using hot glue or silicone to secure the crossover board in the box. My concern, however, is that the better quality (read heavy) inductors that I am using will be too much weight for the glue if the cabinet is moved or turned on its side. Would it be better to screw the crossover to the base of the box?

I have also read in this forum that there is a benefit to isolating the crossover. Does this mean building a box within a box or just using isolating material (such as the glue) to absorb some of the internal resonance that might impact the performance of the crossover parts.

I would appreciate any suggestions or experiences of forum participants regarding the securing of their crossovers inside the cabinet. If a missed a thread on this topic in my search, please point me in the right direction.

Thanks for any suggestions.

BobPM
  Reply With Quote
Old 1st September 2005, 03:42 PM   #2
Ron E is offline Ron E  United States
diyAudio Member
 
Ron E's Avatar
 
Join Date: Jun 2002
Location: USA, MN
I use pegboard and tie-wrap large inductors. I hot glue everything else to the board. Velcro is nice way of mounting the crossover to the walls that is not subject to rattles, like loose screws or standoffs. I usually put the XO on the bottom of the cabinet.

Mounting outside the box is more of a convenience issue while a design is in the tweaking stage, IMO. While capacitors and inductors can be slightly microphonic, it is way down in the noise floor - microphonics are more of an issue with active electronics, where they are being amplified along with the signal.
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. Aldous Huxley
  Reply With Quote
Old 1st September 2005, 05:25 PM   #3
BobPM is offline BobPM  United States
diyAudio Member
 
Join Date: Aug 2005
I am using ties and hot glue to attach the inductors and capacitors to 1/4 inch plywood as a base.

Can you tell me if the velcro is strong enough to keep the crossover in place when the cabinet is moved? Also, if you wanted to mount the tweeter portion of the crossover higher in the cabinet, how would you secure it to the sides?

Thanks for your comment.

BobPM
  Reply With Quote
Old 1st September 2005, 06:20 PM   #4
diyAudio Member
 
JC Fardo's Avatar
 
Join Date: Jun 2002
Location: Sao Paulo - Brazil
Hi

No problem using velcro since you put the xo board in the bottom of cabinet and of coarse youll move your precious speaker VERY carefully as I should. For vertical instalation Id use short wood screws.

JC
  Reply With Quote
Old 2nd September 2005, 03:01 AM   #5
Ron E is offline Ron E  United States
diyAudio Member
 
Ron E's Avatar
 
Join Date: Jun 2002
Location: USA, MN
I haven't used velcro for side wall mounting. No worries about the velcro coming loose if you use enough, but the glue could fail. I suppose for insurance you could staple the velcro. With Velcro you can pull the XO out without using tools in a cramped box.

If you shipped your speakers UPS and they dropped them off a conveyor, it might shake something loose, but it also might bend your driver frames or break off a magnet....

Planning on multiple transcontinental trips with speakers?
__________________
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works. --Carl Sagan
Armaments, universal debt, and planned obsolescence--those are the three pillars of Western prosperity. Aldous Huxley
  Reply With Quote
Old 2nd September 2005, 07:08 AM   #6
Coolin is offline Coolin  Netherlands
diyAudio Member
 
Coolin's Avatar
 
Join Date: Apr 2003
Location: Holland
Dont use too much hot glue.

As a dialectric its not very good soundwize.

If you can hear differences in cables, this has the same effect.
  Reply With Quote
Old 2nd September 2005, 07:20 AM   #7
BobPM is offline BobPM  United States
diyAudio Member
 
Join Date: Aug 2005
I appreciate the velcro suggestion, but after spending hundreds of dollars on speaker and crossover parts, i'm a little reluctant to just velcro the crossover. Is this just not an important part of speaker construction?

I expect that these may eventually end up in my son's dorm room and could be moved around fairly regularly.

Is there a better or more secure way to secure the crossover than velcro or glue?

Is there a downside to screwing the crossover board into the cabinet itself? If you do attach it with screws should you put any type of resonance absorbing material between the crossover and cabinet?

Thanks for taking the time to discuss.

BobPM
  Reply With Quote
Old 2nd September 2005, 07:32 AM   #8
Ap is offline Ap
diyAudio Member
 
Ap's Avatar
 
Join Date: May 2002
Location: Sydney, Australia
Heres what I do.
Cut two identical boards - 1 for the xover & 1 to go in the box.
Drill holes in both for bolts, on the one that goes in the box mount the bolts. Screw/glue 1 in the box (with bolts & nuts).
Now you can just slip your xover board onto the installed one over the bolts, tighten down nuts - done!
Now you can easily remove your xover, tweak & re-mount.
I dont recommend hot glue - if you want to change components its a pain, I use cable-ties for all components.
  Reply With Quote
Old 2nd September 2005, 12:26 PM   #9
soongsc is offline soongsc  Taiwan
diyAudio Member
 
soongsc's Avatar
 
Join Date: Mar 2005
Location: Taiwan
Quote:
Originally posted by BobPM
I appreciate the velcro suggestion, but after spending hundreds of dollars on speaker and crossover parts, i'm a little reluctant to just velcro the crossover. Is this just not an important part of speaker construction?

I expect that these may eventually end up in my son's dorm room and could be moved around fairly regularly.

Is there a better or more secure way to secure the crossover than velcro or glue?

Is there a downside to screwing the crossover board into the cabinet itself? If you do attach it with screws should you put any type of resonance absorbing material between the crossover and cabinet?

Thanks for taking the time to discuss.

BobPM
One way of doing it is to use piece of MDF about 12mm thick, counter bore a hole to bolt the inductor to the board, us a staple gun to staple straps to the board and tie the caps and resistors on it, then glue the board to the enclosure and ad a few nails with a nail gun if you like.
__________________
Hear the real thing!
  Reply With Quote
Old 2nd September 2005, 06:44 PM   #10
BobPM is offline BobPM  United States
diyAudio Member
 
Join Date: Aug 2005
Ap:

On the board that you permanantly mount, how do you connect it to the cabinet?

Would it work to use both a small amount of glue and short screws to attach the base as solidly as possible to the cabinet to effectively make it part of the cabinet structure.

Also, is the glue for the countersunk bolts sufficient to keep them from spinning when you apply torque to the nut, or do you countersink with at least two flat edges so the bolt won't turn?

This technique seems like and elegant and very secure approach to creating solid removable crossover installation.

Thanks for the suggestion.
BobPM
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cabinet Building Technique of the Fanatics mikee55 Subwoofers 64 23rd April 2007 06:20 PM
Designed my first crossover, tell me what you think, graphs inside pjpoes Multi-Way 7 8th March 2007 11:09 AM
Crossover inside or outside? Audist Multi-Way 4 25th December 2006 07:39 PM
crossover mounting inside box? ALFIrE Multi-Way 3 24th October 2004 06:06 PM


New To Site? Need Help?

All times are GMT. The time now is 07:58 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2