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Single sheet TH challenge
Single sheet TH challenge
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Old 18th April 2018, 05:47 AM   #2191
Vizi0n is offline Vizi0n  United States
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Where are most people placing handles on these cabs? Would using parts express' pocket handle underneath the 8" panel cause any problems? They are pretty deep handles and it seems like they'd cause a disturbance being so far into the path.

Parts Express Plastic Pocket Speaker Cabinet Handle 4-Sided

Thanks!
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Old 19th April 2018, 02:44 AM   #2192
LORDSANSUI is offline LORDSANSUI  Brazil
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I placed mine "unusual handles" in the cab side, taking advantage of the space lost in the folding.
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Old 19th April 2018, 03:41 AM   #2193
Vizi0n is offline Vizi0n  United States
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Hmm. I might duplicate that.
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Old 17th July 2018, 07:21 AM   #2194
klampykixx is offline klampykixx  Australia
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Quote:
Originally Posted by Lunchietey View Post
Hey Klampy, what's your long term opinion on the JB1500s? Having now owned them for a few years in these boxes are they holding up well?

In this box, do you think they'd make a good general purpose PA bass bin in place of say double 15 or 18" boxes?

Any failed drivers/surrounds etc and how hard to you push them?

Cheers for any input
sorry for the super delayed response.

i love these subs. as far as in place of a double 18... it would depend on location, (indoor/outdoor) as these dont go super dooper low ~40hz but they go to 40 with proper grunt.

i came in looking for the Hornresp data as im getting ready to build two more for a total of 8. so yes i love them enough to build more after these years of owning them.

the FS Audio drivers i use are NLA which is massively disappointing. so now im chasing a driver that matches the JB1500 ive been using closely enough that i can use them together.

going to be costly to replace the 6 i have now if i have to.

NOT HAPPY JAN....
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Old 17th July 2018, 02:37 PM   #2195
mwmkravchenko is offline mwmkravchenko  Canada
Mark Kravchenko
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Single sheet TH challenge
Quote:
Originally Posted by AndrewT View Post
15mm birch ply is strong.
The weak links are the joints.
Design your joints to be robust and airtight.

15mm has half the stiffness of 18mm (stiffness varies with the fourth power of thickness ratio - or is it the third power?).
Thus you need to design in sufficient bracing to reduce flexure.
Pocket hole jig if you inventive. Every 35 mm or so in the high pressure areas and every 60 to 75 mm in other areas.

Makes for a lot of drilling and screwing of the cabinet. But a strong cabinet you will achieve without to much fancy joinery.

The best trick to understand is to back off the position of the pocket until it is at leas 30mm away from the edge of your panel so that there is a good amount of plies to bear the holding pressure of your screws.

Another tip is to get particle board screws, or deep root screws. These have an aggressive thread profile, as in much fewer threads per linear length than normal wood screws such as a standard sheet metal screw or drywall screw. Again talking screw type if you can all of the above with a partially thread free shank you are in the best shape as this will allow proper tightening of the boards together without thread binding in the piece where the screw is started.

Hope this is clearer than mud!
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Old 29th July 2018, 01:31 PM   #2196
randyfcc is offline randyfcc
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Default SS15 bracing?

which part of the sub we should put the bracing which it dont affect the tuning or spl level?
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Old 30th July 2018, 01:24 PM   #2197
randyfcc is offline randyfcc
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Default handle

Quote:
Originally Posted by LORDSANSUI View Post
I placed mine "unusual handles" in the cab side, taking advantage of the space lost in the folding.
that might be a little harder to carry the sub since its not straight,
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Old 20th August 2018, 10:50 PM   #2198
jbell is offline jbell  United States
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Old 20th August 2018, 11:12 PM   #2199
klampykixx is offline klampykixx  Australia
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I'm. about to build two more yay
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Old 20th August 2018, 11:28 PM   #2200
weltersys is offline weltersys  United States
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Quote:
Originally Posted by jbell View Post
This thread is still going?
Yes, just not very well without you ;^).

Good to see you are still alive!

Art
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