DR build questions

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Keryn O'Shea
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Re: DR build questions

#76 Post by Keryn O'Shea »

Pretty happy with the way that turned out
20240120_151548.jpg
Using lockwire in three spots to attach the diffuser worked well
20240120_150105.jpg
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FLat, J12 Flat, OT12 Flat, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 Mld'd, XF210. Next J10L

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Tom Smit
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Re: DR build questions

#77 Post by Tom Smit »

Looking sharp.
TomS

Keryn O'Shea
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Re: DR build questions

#78 Post by Keryn O'Shea »

Thank you very much mate, seeing them take shape is wicked
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20240120_172355.jpg
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FLat, J12 Flat, OT12 Flat, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 Mld'd, XF210. Next J10L

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AntonZ
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Re: DR build questions

#79 Post by AntonZ »

Tom Smit wrote: Sat Jan 20, 2024 1:28 am Looking sharp.
Agreed. And if I may add to that, I think it is an understatement.

Clever use of lock wire. I wasn't sure how you intended to go about. The way you did it makes the wire completely invisible from the war end of your cab. In this incarnation of the DR plans the tweeter array does not need to be airtight IIRC so the holes for wire will do no harm. Well done.

Keryn O'Shea
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Re: DR build questions

#80 Post by Keryn O'Shea »

AntonZ wrote: Sat Jan 20, 2024 7:22 am Agreed. And if I may add to that, I think it is an understatement.
Thank you for your kind words mate!

Slow progress is better than none..
20240211_122248.jpg
T48 no.4 is underway 😀
20240215_194331.jpg
If by chance l'd like more midrange, could a DR280 and 250 be used together? (A pair of each per side) I ask as an XF210 made its way back to me last week and l remembered it was loaded with these woofers
20240216_172930.jpg
20240216_172956.jpg
They're another obsolete "FS" brand 10inch, rated at 280w.
I'd like to build all 3 of the DR series, just wondering if they can be combined in any way? I guess there'd be no point to a 280/200 stack..?
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FLat, J12 Flat, OT12 Flat, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 Mld'd, XF210. Next J10L

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Bill Fitzmaurice
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Re: DR build questions

#81 Post by Bill Fitzmaurice »

Combining tops with different frequency and phase responses is a can of worms you don't want to open. Besides, if the XF210 was correctly done those are guitar drivers.

Keryn O'Shea
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Re: DR build questions

#82 Post by Keryn O'Shea »

Bill Fitzmaurice wrote: Fri Feb 16, 2024 7:56 am Combining tops with different frequency and phase responses is a can of worms you don't want to open.
Ok thank you Bill
Bill Fitzmaurice wrote: Fri Feb 16, 2024 7:56 am if the XF210 was correctly done those are guitar drivers.
The cab is to XF specification, these drivers are not, l'm sourcing correct ones atm. l know better these days not to use an out of spec driver :slap:
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FLat, J12 Flat, OT12 Flat, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 Mld'd, XF210. Next J10L

Keryn O'Shea
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Re: DR build questions

#83 Post by Keryn O'Shea »

The speaker fairy has delivered 4x used 2510s :)
The front gaskets have been ground off and one needs a new dust cap, which l was aware of before purchase.
A pair will be loaded into DR250s, the other pair J10 Lites, will l need to purchase recone kits to restore the front gaskets, or can l use gasket tape when the time comes? The original gaskets are level with the frame
20240226_160715.jpg
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FLat, J12 Flat, OT12 Flat, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 Mld'd, XF210. Next J10L

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Seth
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Re: DR build questions

#84 Post by Seth »

I wouldn't hesitate to use gasket tape, myself. I might not even fix the dust cap. Or I might try sucking the dent out of it, if I could get my lips to seal.
Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded

Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421

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Bill Fitzmaurice
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Re: DR build questions

#85 Post by Bill Fitzmaurice »

Use a hand held vacuum cleaner.

Keryn O'Shea
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Re: DR build questions

#86 Post by Keryn O'Shea »

Seth wrote: Mon Feb 26, 2024 5:02 am ..Or I might try sucking the dent out of it, if I could get my lips to seal.
😄
Bill Fitzmaurice wrote: Mon Feb 26, 2024 7:37 am Use a hand held vacuum cleaner.
Yes, that would usually work, however there's three pinholes in the cover, and it's a little mangled from a previous attempt, it looks weak.
20240227_065326.jpg
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FLat, J12 Flat, OT12 Flat, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 Mld'd, XF210. Next J10L

Bruce Weldy
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Re: DR build questions

#87 Post by Bruce Weldy »

Keryn O'Shea wrote: Mon Feb 26, 2024 4:03 pm it looks weak.
20240227_065326.jpg
Doesn't matter....it doesn't do anything except keep out the dust. The problem is when the edge comes loose and rattles. The holes and dents won't hurt anything. But, doesn't hurt to run a little bead of superglue around the edge of the dust cover to ensure it doesn't come loose.

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."

Keryn O'Shea
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Re: DR build questions

#88 Post by Keryn O'Shea »

Bruce Weldy wrote: Mon Feb 26, 2024 8:06 pm Doesn't matter...
Ok, l was caught up thinking the pinholes would contribute to an air leak, so l could reinforce any suspect spots with Starbond (rubberised CA glue) and confidently load the driver into a DR? How comparable are the pressures/forces on the driver cone inside a DR throat, to the horn path of a Titan or Tuba?
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FLat, J12 Flat, OT12 Flat, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 Mld'd, XF210. Next J10L

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Seth
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Re: DR build questions

#89 Post by Seth »

The dust cap seals drivers with vented backing plates or "vented pole piece". It appears the 2510's are vented. Still, I'd think a little of the rubberized CA glue would do just fine.

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Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded

Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421

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Bill Fitzmaurice
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Re: DR build questions

#90 Post by Bill Fitzmaurice »

Dust covers are easily replaced. Removing the old cover is a delicate job, you don't want to cut the cone, but it doesn't have to be 100% removed.

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