DR 250 in France...

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Kranku68
Posts: 52
Joined: Fri Jun 20, 2014 3:15 pm

DR 250 in France...

#1 Post by Kranku68 »

so c'm'on let's go...
first build for me: a pair of DR 250 (3010 and melded array...)
the big challenge: having 'em finished at the end of august.
Attachments
in the beginning...horn threat
in the beginning...horn threat
2 DR250 powered by a L-Acoustics LA24
2 Jack 112
2 tuba 30
2 Tuba 18
4 SLA Pro Top
2 Otop 8

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DJPhatman
Posts: 5411
Joined: Mon Aug 14, 2006 5:08 am
Location: Warren, MI
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Re: DR 250 in France...

#2 Post by DJPhatman »

Kranku68, I hope you are not using that Tite-Bond wood glue instead of an expanding polyurathane adhesive, such as Loctite brand PL Premium. Tite-Bond does not have the expanding, gap-filling capabilities of PL Premium, and this is a must for air tight finish.

Google translate to French:

Kranku68, j'espère que vous ne l'utilisez que Tite-Bond colle à bois à la place d'un adhésif de polyurethane expansion, comme la marque Loctite PL Premium. Tite-Bond n'a pas les capacités d'expansion, de combler les écarts de PL Premium, et c'est un must pour l'air arrivée serrée.
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

Frederic Gelinas
Posts: 566
Joined: Wed Jul 23, 2008 10:03 am
Location: Saint-Pie, Quebec, Canada

Re: DR 250 in France...

#3 Post by Frederic Gelinas »

DjPhatman is right (although the Google translate is a bit confusing...)

Tu dois absoluement utiliser la colle PL Premium. Elle prend une légère expansion ce qui permet de faire des joints parfaitement étanches.
Frédéric Gélinas, HF Audio
Authorized Builder
HFAudio.ca
Free tone Generator
Saint-Hyacinthe, Québec, Canada

Kranku68
Posts: 52
Joined: Fri Jun 20, 2014 3:15 pm

Re: DR 250 in France...

#4 Post by Kranku68 »

Yes !
Don't worry...the tite bond bottle was there cause I was glueing a fretboard at the same time and assembling some pieces of plywood to cut some new parts of the throat horn :)... No tite bond for the dr 250, I've read some of the posts and it's written in the plans !,,,
But Thanks for the advice anyway 8)
2 DR250 powered by a L-Acoustics LA24
2 Jack 112
2 tuba 30
2 Tuba 18
4 SLA Pro Top
2 Otop 8

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escapemcp
Posts: 1219
Joined: Thu Feb 07, 2013 8:57 pm
Location: Bristol, UK

Re: DR 250 in France...

#5 Post by escapemcp »

:loler: :loler: Did you put the titebond in the picture just for a laugh??

If so, then you want to include a picture of some crappy chinese ply or a non-standard driver in your next post - should get a similar response :lol: :loler:

Kranku68
Posts: 52
Joined: Fri Jun 20, 2014 3:15 pm

Re: DR 250 in France...

#6 Post by Kranku68 »

ok after a little trip in spain i'm back at work !
i've ordered and received this week all the stuff i was missing:
40 x 1016 and filter caps, resistors etc...Super fast shipping from parts-express, really impressive !
and finally i went to 2510 deltalite II for this first build...Thanks Thomann...
some progress in the construction have been done, i'll put some pictures this evening :)
2 DR250 powered by a L-Acoustics LA24
2 Jack 112
2 tuba 30
2 Tuba 18
4 SLA Pro Top
2 Otop 8

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Chris_Allen
Posts: 3358
Joined: Wed Jul 11, 2007 2:43 pm
Location: Huddersfield, UK

Re: DR 250 in France...

#7 Post by Chris_Allen »

Two good companies you you've used there.

Sadly,due to interest rates, Thomann is as cheap as it used to be :(
Built:
6xDR200, 2xT39, 2xT48, 2xJack110, 1xOmni10.5, 1xAutotuba, 1xT18, 1xSLA Pro, 1xW8, 1xW10

Kranku68
Posts: 52
Joined: Fri Jun 20, 2014 3:15 pm

Re: DR 250 in France...

#8 Post by Kranku68 »

ok the main parts are done...i'm beginning with the tricky phase now...
Attachments
back
back
front
front
2 DR250 powered by a L-Acoustics LA24
2 Jack 112
2 tuba 30
2 Tuba 18
4 SLA Pro Top
2 Otop 8

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DJPhatman
Posts: 5411
Joined: Mon Aug 14, 2006 5:08 am
Location: Warren, MI
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Re: DR 250 in France...

#9 Post by DJPhatman »

I'm sorry, Kranku68, but you installed the T-nuts on the wrong side of the woofer baffle. If they are not glued in, it's not a big problem. Pull them, drill all the way through the woofer baffle, then install hardwood dowel to fill in the holes. Use "Kreg jig" style screws to attach the woofer, and leave the T-nuts out.

Other than that, good looking build!
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

Kranku68
Posts: 52
Joined: Fri Jun 20, 2014 3:15 pm

Re: DR 250 in France...

#10 Post by Kranku68 »

Yeah and i knew that but i had to make a choice...in fact i ordered too shorts screws !
So to be able to mount my speakers that was the only way...so i've glued the nuts and i'll probably have to install a joint for the speakers :cry:
2 DR250 powered by a L-Acoustics LA24
2 Jack 112
2 tuba 30
2 Tuba 18
4 SLA Pro Top
2 Otop 8

Bruce Weldy
Posts: 8585
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: DR 250 in France...

#11 Post by Bruce Weldy »

Kranku68 wrote:Yeah and i knew that but i had to make a choice...in fact i ordered too shorts screws !
So to be able to mount my speakers that was the only way...so i've glued the nuts and i'll probably have to install a joint for the speakers :cry:
As you tighten the bolts, you will pull the t-nuts out...even with glue. If you don't tighten it enough, you'll get leaks around the speaker gasket.

You really have to re-do this.

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."

Kranku68
Posts: 52
Joined: Fri Jun 20, 2014 3:15 pm

Re: DR 250 in France...

#12 Post by Kranku68 »

Damned...you're just f####### right...how could i have been so stupid :confused:
So let's re-do that part...
2 DR250 powered by a L-Acoustics LA24
2 Jack 112
2 tuba 30
2 Tuba 18
4 SLA Pro Top
2 Otop 8

Bruce Weldy
Posts: 8585
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: DR 250 in France...

#13 Post by Bruce Weldy »

Kranku68 wrote:Damned...you're just f####### right...how could i have been so stupid :confused:
So let's re-do that part...

You aren't stupid :fruit: ....if you were, you'd ignore the advice and just keep going. :bash:

You just proved that you are smart. :clap:

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."

Kranku68
Posts: 52
Joined: Fri Jun 20, 2014 3:15 pm

Re: DR 250 in France...

#14 Post by Kranku68 »

ok some progress...
so i've followed the advices and taken away the t-nuts from the wrong side and put'em on the correct side.
an afternoon making some dust and the sheath cleats have been cut and glued...
the back braces are now cut and i'm beginning the glueing process...
Attachments
it's beginning to look like a DR
it's beginning to look like a DR
glueing the back braces
glueing the back braces
2 DR250 powered by a L-Acoustics LA24
2 Jack 112
2 tuba 30
2 Tuba 18
4 SLA Pro Top
2 Otop 8

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Tom Smit
Posts: 7595
Joined: Sat Jan 05, 2008 1:24 pm
Location: Sarnia, Ont. Canada

Re: DR 250 in France...

#15 Post by Tom Smit »

Is that white silicone at the joints? May I suggest that you use a knife/chisel to trim it out? The horn sheaths have to go tight to the cleats, and those beads may impede that to happen and you risk having the cab not be air-tight..
TomS

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