Question about T39 Handle - urgent :)

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Lustyik
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Question about T39 Handle - urgent :)

#1 Post by Lustyik » Sun Jul 16, 2017 4:51 am

Hi All,

I would like to ask some advice. I am building a pair of T39 with 3012LF driver.
I would like to insert handles to the side panels.
Can I use steel handles that are on the pictures below?

Any advices would be appreciated.
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Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

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LelandCrooks
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Re: Question about T39 Handle - urgent :)

#2 Post by LelandCrooks » Sun Jul 16, 2017 7:33 am

With great difficulty. They have to be AIRTIGHT. Getting that done around the interior panels you have to cut is crazy hard. I'd strongly advise against it.
If it's too loud, you're even older than me! Like me.
http://www.speakerhardware.com

Lustyik
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Re: Question about T39 Handle - urgent :)

#3 Post by Lustyik » Sun Jul 16, 2017 8:19 am

LelandCrooks wrote:With great difficulty. They have to be AIRTIGHT. Getting that done around the interior panels you have to cut is crazy hard. I'd strongly advise against it.
OK, thank you!
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

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Tom Smit
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Re: Question about T39 Handle - urgent :)

#4 Post by Tom Smit » Sun Jul 16, 2017 9:45 pm

Lustyik wrote:
LelandCrooks wrote:With great difficulty. They have to be AIRTIGHT. Getting that done around the interior panels you have to cut is crazy hard. I'd strongly advise against it.
OK, thank you!
I strongly suggest following the ideas, in the plans, about how to install handles. They work well.
TomS

Lustyik
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Re: Question about T39 Handle - urgent :)

#5 Post by Lustyik » Mon Jul 17, 2017 5:27 am

Tom Smit wrote:
Lustyik wrote:
LelandCrooks wrote:With great difficulty. They have to be AIRTIGHT. Getting that done around the interior panels you have to cut is crazy hard. I'd strongly advise against it.
OK, thank you!
I strongly suggest following the ideas, in the plans, about how to install handles. They work well.
Hi Tom,

Thank you!

My theory was to prepare "small boxes" the inner face of the side panels, from plywood. That "boxes" would fully cover the handles and would be fully airtight as well.
I wanted to use screw nuts that are on the pictures below. This screw nuts would not go through on the inner cover boxes.

These “inner boxes” would cause slight decrease of the capacity (volume) of the chamber.
If I could ensure the airtight fixing of handles, would the performance be effected by these small "inner boxes"?
What do you think?
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Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

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whines
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Re: Question about T39 Handle - urgent :)

#6 Post by whines » Mon Jul 17, 2017 7:11 am

Those inner boxes would be taking a chunk out of boards that make up the horn path at a variety of angles on the inside, that sounds like a ton of work...and as noted before, any small leaks would really hurt you.
2xJ15, THT, 4xT39 3012 (2x15", 2x20"), 2xSLA Pro, 2x short SLA Pro (Dayton), W6

Bruce Weldy
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Re: Question about T39 Handle - urgent :)

#7 Post by Bruce Weldy » Mon Jul 17, 2017 7:25 am

Here's a side view of a T39 ..... exactly where would you put a handle like that? It's much easier to roll them than to carry them.
060110 Subs 1.JPG

6 - T39 4-25" 2-22" 3012LF
4 - OT12 2512 Melded/NSD2005
1 - T24
2 - XF210


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dswpro
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Re: Question about T39 Handle - urgent :)

#8 Post by dswpro » Mon Jul 17, 2017 7:33 am

If you want those handles you can put them into the bottom (lower section) of the cabinet sides so they protrude into the large mouth section, and even mount wheels on the back panel of the top section, but honestly I would not bother. The handle cut-outs in the plans are really optimal for wheeling this sub around. Don't change the dimensions of the cabinet interior anywhere near the driver.

Lustyik
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Re: Question about T39 Handle - urgent :)

#9 Post by Lustyik » Mon Jul 17, 2017 8:36 am

Bruce Weldy wrote:Here's a side view of a T39 ..... exactly where would you put a handle like that? It's much easier to roll them than to carry them.
060110 Subs 1.JPG

I like the side-integrated handles in the plan. But it is not an option in case of 3012LF.
I thought it could be useful, because we have to carry our stuff many times on stairs, where casters do not works properly. IMO side handles more comfortable for us.

I wanted to locate the handle as it is described in the plan, when reducers could be used. So in my case, it would hang down to the chamber.
There are smaller handles, like: 6 1/3 x 8 2/3 inches. It would hang down to the chamber ca. 2 1/2 inches (bought side).
I am building 21" wide cab, so I guess there is enough place for them in the chamber - but I did not check it yet. First I wanted to know is it feasible or not.

The other side, if these handles could influence the performance of the cab, than I would not wasting time with that.
Based on the valuable comments here, I am ready to change my direction and use handles as it is on the plan.

I learned the rule, if it could be feasible, it would be in the plan. :cowboy:
Built: 2x OT12 (2512; NSD)
Ongoing: 2x T39 (3012)


PreSonus sl 16.4.2
Driverack PA
Driverack PX
PKN XD2500 (2x650w / 8ohm)
PKN LC4004 (4x500w / 8ohm)

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Tom Smit
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Re: Question about T39 Handle - urgent :)

#10 Post by Tom Smit » Mon Jul 17, 2017 9:02 pm

Lustyik wrote:I learned the rule, if it could be feasible, it would be in the plan. :cowboy:
:clap: :)
TomS

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DJPhatman
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Re: Question about T39 Handle - urgent :)

#11 Post by DJPhatman » Wed Jul 19, 2017 1:50 pm

Lustyik wrote:I thought it could be useful, because we have to carry our stuff many times on stairs, where casters do not works properly. IMO side handles more comfortable for us.
Actually, the cut-out handles at the top rear, as shown in the plans, and recessed casters in the bottom rear, are superb for scaling all but the narrowest flights of stairs. You pull it up behind you, like a hand trolley.

Leland used to carry a type of skateboard rail slider that installed on the back of titans and allowed them to glide up and down stairs. They look like the pic below, and screw on long ways to the lower back of the titan. 1 on each side does the trick!

Image
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LelandCrooks
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Re: Question about T39 Handle - urgent :)

#12 Post by LelandCrooks » Wed Jul 26, 2017 6:52 am

If it's too loud, you're even older than me! Like me.
http://www.speakerhardware.com

byacey
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Re: Question about T39 Handle - urgent :)

#13 Post by byacey » Mon Jul 31, 2017 1:23 am

I used these on my T48:
http://www.tchweb.com/tchstore/product/ ... andle.html

They need about 3/8" depth, so I routed out a pocket for them and liberally applied PL glue to the back of the handle to prevent any buzzing from the thin layer of plywood in behind. I placed them on the sides about 32 inches high.
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