damn damn DAMNNNNN...

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djtrumptight
Posts: 809
Joined: Tue Dec 15, 2009 6:08 pm
Location: Detroit,Michigan

damn damn DAMNNNNN...

#1 Post by djtrumptight » Mon Mar 16, 2020 2:04 pm

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Soooo,I have wasted a lot of time and 2 1/2 sheets of Baltic Birch and I still can’t figure out how and where.After applying the top and bottom for a new set of DR250’s, the baffle extends 1/4 inch too far into the driver chamber so instead of the baffle and “about half” of the first flange extending over the access opening I have the baffle and a whole flange extending over the opening,which also leaves the baffle too wide and extending outside of the arc lines.At this point I can only take the loss and start all over.Im sure someone is curious,the reason I’m doing the old plans is I have 4 of the old style and I wanna keep everything uniform,I don’t wanna appear to have 3 different speakers when I use them all together.Grrrrrrr.....
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's

djtrumptight
Posts: 809
Joined: Tue Dec 15, 2009 6:08 pm
Location: Detroit,Michigan

Re: damn damn DAMNNNNN...

#2 Post by djtrumptight » Mon Mar 16, 2020 2:08 pm

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The total waste :horse: :owned:
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's

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Bill Fitzmaurice
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Posts: 27220
Joined: Tue May 02, 2006 5:59 pm

Re: damn damn DAMNNNNN...

#3 Post by Bill Fitzmaurice » Mon Mar 16, 2020 2:14 pm

I'd just redraw the curve of the horn sheath. That much deviation isn't going to bother anything.

djtrumptight
Posts: 809
Joined: Tue Dec 15, 2009 6:08 pm
Location: Detroit,Michigan

Re: damn damn DAMNNNNN...

#4 Post by djtrumptight » Mon Mar 16, 2020 3:15 pm

Yes !!! :hyper: :cowboy: :clap: :loler: :loler:
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's

User avatar
Bill Fitzmaurice
Site Admin
Posts: 27220
Joined: Tue May 02, 2006 5:59 pm

Re: damn damn DAMNNNNN...

#5 Post by Bill Fitzmaurice » Mon Mar 16, 2020 4:09 pm

FWIW the taper of the horn isn't critical. Of far more importance are the throat and mouth areas and the horn length. You could draw a straight line from the throat horn supports to the tweeter array opening and it wouldn't affect response all that much. But it would make the baffle too narrow to fit the driver, and you'd lose the strength benefit inherent in having the horn sheaths bent.

djtrumptight
Posts: 809
Joined: Tue Dec 15, 2009 6:08 pm
Location: Detroit,Michigan

Re: damn damn DAMNNNNN...

#6 Post by djtrumptight » Tue Mar 17, 2020 1:40 am

ok,thanks,i have moved on with the build but i had to stop,i dont have any 1/4" plywood to finish the access hole cover flange or 1/8" plywood for the butt cheeks and i havent built the tweeter arrays yet so i will be going to Toledo Ohio to get the wood tomorrow.Its funny that i can drive an hour to Toledo to buy wood and even adding in the gas its still alot cheaper than buying it here in Detroit,the one place that i know that sells BB actually buys it from the place im going to in Ohio and sells it for double the price.With the money i'll save by taking that drive i can actually buy enough 1/2" BB to build my Table Tuba for my SLA HT thats been sitting collecting dust.Thanks again for the help Bill.
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's

User avatar
Bill Fitzmaurice
Site Admin
Posts: 27220
Joined: Tue May 02, 2006 5:59 pm

Re: damn damn DAMNNNNN...

#7 Post by Bill Fitzmaurice » Tue Mar 17, 2020 7:30 am

That's nuts. I've never had a problem finding BB. My local lumber yard has it, in a town with a population of 17,000.

djtrumptight
Posts: 809
Joined: Tue Dec 15, 2009 6:08 pm
Location: Detroit,Michigan

Re: damn damn DAMNNNNN...

#8 Post by djtrumptight » Tue Mar 17, 2020 11:54 am

Its actually been awhile since i have tried to research any new places,this may be a good time to do so.
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's

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