Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

PA Systems A forum for discussion of all parts of a sound reinforcement or DJ system: loudspeakers, mixers (desks) etc.

This diy basically,
This diy basically,
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 7th October 2019, 06:03 PM   #1
djlivex is offline djlivex  United States
diyAudio Member
 
Join Date: Jan 2010
Location: Tampa, FL
Default This diy basically,

Anyone here remove the screws after the glue has dried? I am using polyurethane construction glue on the joints and screwed, but I have removed the screws to keep the cabinet lighter for PA sub duties (double JBL ferrite 15" 2226H). I also plan on using battens 1"x2" farring strips L shape for additional ruggedness, screwed then I will remove them since no Dado joints just butt joints all through out. Thanks
  Reply With Quote
Old 7th October 2019, 06:08 PM   #2
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Location: Waterloo, ON or Herefordshire UK
This diy basically,
wow, you think the weight of the screws is going to be a problem ? how many of 'em did you use ?
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 8th October 2019, 12:21 AM   #3
djlivex is offline djlivex  United States
diyAudio Member
 
Join Date: Jan 2010
Location: Tampa, FL
Every 5 " but the furring strips all through out the cab joints. 2 cabs 41"x23"x22.5" I've removed plenty already, I know I am using ferrite woofers but every little ounce counts. I am a 1 man or 2 man band at times, DJ. Thanks
  Reply With Quote
Old 9th October 2019, 02:07 PM   #4
1audiohack is offline 1audiohack  United States
diyAudio Member
 
1audiohack's Avatar
 
Join Date: Dec 2010
Location: Las Vegas Nevada
Thatís just like leaving the seat belt out of a cement truck!!

Less safe, insignificant weight savings.

Barry.
  Reply With Quote
Old 14th October 2019, 02:06 PM   #5
Damo s is offline Damo s  United Kingdom
diyAudio Member
 
Join Date: Oct 2018
Location: Cambridge, UK
Agreed. leave them in. I doubt you'd notice the 39.9 kg box being any lighter than the 40
  Reply With Quote
Old 14th October 2019, 02:51 PM   #6
mortron is offline mortron  Canada
diyAudio Member
 
Join Date: Aug 2011
Location: Town
Lightweight starts with the supplies. There's a bass cab maker who takes EPS, fiberglasses it and makes big bass cabs that weigh next to nothing. Genius IMO.

A box of screws is probably not near as heavy as the weight savings of going with a neo woofer. I love JBL, but ferrite woofers are a backs worst enemy on the road. And replacing a JBL with something else is not always an easy feat.

When shopping for an 8x10 bass cabinet, I settled on a 6x10 because neo was still kind of new at the time. It had similar output with a big weight savings and to this day is still one of my better purchases I've ever made. The idea of a 4x12 guitar cab was cool at 16, but as I age, stacked 2x12s make more sense... Or do what I used to do... Ask the strongest guy in the band to carry my cab up stairs, and take all the little stuff LOL.

For future reference, this is where a little pre planning would get you a long way. A good dado joint is great. Not always easy to do, but if you take the time then, it pays off in end. Makes one man glue ups easier too IME.

Screws aren't holding anything together anymore. The glue in a joint will be the strong bond if it was glued properly. The screws were just temporary clamps.

Hopefully you have a hand truck and take care of your back... Wheels are your friend when it comes to moving weight.
  Reply With Quote
Old 16th October 2019, 03:20 PM   #7
djlivex is offline djlivex  United States
diyAudio Member
 
Join Date: Jan 2010
Location: Tampa, FL
Yes mortron and others thanks for that. I picked up a box of drywall screws with 1.5" long and weighed around 5.5 lbs planning on putting two metal handles on the back top side and casters with metal housing and these cabs are going to be heavy. But if I angled this cab and not have to be picked up I guess I will be ok, back wise. I am estimating with 2 x JBL 2226 15" woofers and 3/4" ply will weigh around 130 lbs per sub. Thanks for all replies.
  Reply With Quote
Old 16th October 2019, 03:39 PM   #8
ndcraig is offline ndcraig  United States
diyAudio Member
 
Join Date: Apr 2013
Location: Mon-Dak
Quote:
Originally Posted by djlivex View Post
Anyone here remove the screws after the glue has dried? I am using polyurethane construction glue on the joints and screwed, but I have removed the screws to keep the cabinet lighter for PA sub duties (double JBL ferrite 15" 2226H). I also plan on using battens 1"x2" farring strips L shape for additional ruggedness, screwed then I will remove them since no Dado joints just butt joints all through out. Thanks
Maybe split the difference a bit and leave the ones closest to the ends of each batten near corners?


Another consideration is make pocket handles in the plywood by cutting out sections then putting a plastic handle cups behind inside the box to eliminate the air-leak. You'll loose what bit of weight from removing the plywood holes and the plastic handle-cup is far lighter than the steel ones you were probably going to use.


Like you I am a one-man operation and because bass is the easiest to sum the outputs of multiple cabinets without comb filtering I use multiples of small light bass cabinets that stack together to equal a large heavy cabinet.
Smaller cabinets can use thinner material too and that offers a significant weight savings.
Neo drivers are the best way, but I tend to use ones I already have or acquire through hand-me-downs or trade so less desirable heavy ferrite ones I can actually afford. (and since mid/high and top cabs always have to get lifted higher or put on stands, I will try to spend the extra for neo drivers for them!)

Last edited by ndcraig; 16th October 2019 at 03:49 PM.
  Reply With Quote
Old 16th October 2019, 05:05 PM   #9
Mark Tillotson is offline Mark Tillotson
diyAudio Member
 
Join Date: May 2018
Location: Cambridge UK
If you don't want screws, don't use them in the first place, just get some frame clamps.
  Reply With Quote

Reply


This diy basically,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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
MJ21194 vs. MJ21196 Devices Basically The Same Mark Allen Parts 4 22nd January 2017 07:08 AM
FS: Jordan JX92s, basically new Sarchi Swap Meet 4 2nd January 2015 04:54 PM
FS: Raal 70-10D ribbon tweeters, basically new sfdoddsy Swap Meet 4 1st February 2014 07:30 AM
Ehm...basically just wanted a nice DAC.. Olombo Digital Source 3 16th August 2012 11:08 PM
Are they basically Borbely hybrid circuitry? Tubenstein Tubes / Valves 0 19th August 2011 09:06 AM


New To Site? Need Help?

All times are GMT. The time now is 08:50 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki