Scaling way back! Lots of questions
Re: Scaling way back! Lots of questions
Thought I'd mention that, for no good reason, I am a fan of 8" drivers. I'd love for you to build a pair of OT8's!
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
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
Re: Scaling way back! Lots of questions
I agree.Grant Bunter wrote: ↑Mon Jul 27, 2020 4:19 pm I reckon you should remove the Jacks from the decision.
Hi Grant
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
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
Re: Scaling way back! Lots of questions
I should note that I’m ok with the weight penalty if I’m gaining storage space and or performance.
Thanks Seth
Well I sure do love my DR200s and those just have the beta 8.
I saw one guy in the build threads that put together a pair of Otop8s and T48s ... raves about em. I messaged him to see if he had anything else to say about his set up, but it sure sounds promising. He used the beta 8s as well so I really wonder what bi amped premium drivers would do?
Shoot, now we just need to build them to compare! It’s for the best of the group
Thanks Seth
Well I sure do love my DR200s and those just have the beta 8.
I saw one guy in the build threads that put together a pair of Otop8s and T48s ... raves about em. I messaged him to see if he had anything else to say about his set up, but it sure sounds promising. He used the beta 8s as well so I really wonder what bi amped premium drivers would do?
Shoot, now we just need to build them to compare! It’s for the best of the group
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Scaling way back! Lots of questions
Bi amping will just add complexity and unneeded amp channels to the system, no benefit in doing so... that's what Bill always says anyway. However, I understand the urge to do it anyway. Because, sometimes, we just want to. Won't hurt the sound. Just more setup and kit to haul.
I like the idea of the ultra premium driver option
Last edited by Seth on Mon Jul 27, 2020 5:02 pm, edited 2 times in total.
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
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
Re: Scaling way back! Lots of questions
Ahhh I’m already there. I’m bi amping my DR200s, not that I need to power, I like to turn down the gain on the highs. I know it’s overkill but whatevs
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Scaling way back! Lots of questions
Exactly. What ever tickles your fancy, I say. This is DIY audio after all.
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
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
- Bill Fitzmaurice
- Site Admin
- Posts: 28646
- Joined: Tue May 02, 2006 5:59 pm
Re: Scaling way back! Lots of questions
SPL is SPL, the source doesn't matter. Sensitivity and driver displacement matter. Just don't screw it up like the guy in that OTop 8 thread where he used totally out of spec drivers that weren't even suitable for a ported box, let alone a horn.
Re: Scaling way back! Lots of questions
Roger that sir!
I’m in the aviation field, doing it right the 1st time is pretty important
I’m in the aviation field, doing it right the 1st time is pretty important
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
Re: Scaling way back! Lots of questions
Is the off axis coverage between the OT8 & OT12 for all intents and purposes close enough to not be concerned with?Bill Fitzmaurice wrote: ↑Mon Jul 27, 2020 5:20 pmSPL is SPL, the source doesn't matter. Sensitivity and driver displacement matter. Just don't screw it up like the guy in that OTop 8 thread where he used totally out of spec drivers that weren't even suitable for a ported box, let alone a horn.
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
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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- Posts: 8325
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Scaling way back! Lots of questions
Melded array is melded array.....flat it flat.....CD horn is CD horn. The box in this case won't change that.SethRocksYou wrote: ↑Mon Jul 27, 2020 5:45 pmIs the off axis coverage between the OT8 & OT12 for all intents and purposes close enough to not be concerned with?Bill Fitzmaurice wrote: ↑Mon Jul 27, 2020 5:20 pmSPL is SPL, the source doesn't matter. Sensitivity and driver displacement matter. Just don't screw it up like the guy in that OTop 8 thread where he used totally out of spec drivers that weren't even suitable for a ported box, let alone a horn.
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."
Re: Scaling way back! Lots of questions
I get that with the tweeter section. Makes all the sense in the world.Bruce Weldy wrote: ↑Mon Jul 27, 2020 6:11 pm
Melded array is melded array.....flat it flat.....CD horn is CD horn. The box in this case won't change that.
More specifically, the dispersion angle of the mid range. Enclosure width wouldn't matter? I don't know, that's why I ask. Joe's question raised the curiosity for me, if that would change anything one way or another... or not at all. I know driver size in direct radiator tops effects dispersion angle, but I think that may be an effect of the cone angle, or something to that effect. But, again, I don't know for sure.
Hi Bruce
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
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
-
- Posts: 8325
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Scaling way back! Lots of questions
The lower the frequency, the wider the dispersion. Everything below the tweeter section should be as wide or wider than the tweeters.SethRocksYou wrote: ↑Mon Jul 27, 2020 7:06 pmI get that with the tweeter section. Makes all the sense in the world.Bruce Weldy wrote: ↑Mon Jul 27, 2020 6:11 pm
Melded array is melded array.....flat it flat.....CD horn is CD horn. The box in this case won't change that.
More specifically, the dispersion angle of the mid range. Enclosure width wouldn't matter? I don't know, that's why I ask. Joe's question raised the curiosity for me, if that would change anything one way or another... or not at all. I know driver size in direct radiator tops effects dispersion angle, but I think that may be an effect of the cone angle, or something to that effect. But, again, I don't know for sure.
Hi Bruce
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."
-
- Posts: 8325
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Scaling way back! Lots of questions
Howdy Young Fella....
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."
- Bill Fitzmaurice
- Site Admin
- Posts: 28646
- Joined: Tue May 02, 2006 5:59 pm
Re: Scaling way back! Lots of questions
It does. The narrower the enclosure the wider the dispersion. This applies down to the frequency where the enclosure width is one wavelength. At that point dispersion is 180 degrees. Below that you lose axial output, because the dispersion is wider than 180 degrees, so this sword has two edges.SethRocksYou wrote: ↑Mon Jul 27, 2020 7:06 pm More specifically, the dispersion angle of the mid range. Enclosure width wouldn't matter?
Re: Scaling way back! Lots of questions
That's super interesting. Thank you Bill.Bill Fitzmaurice wrote: ↑Mon Jul 27, 2020 9:11 pmIt does. The narrower the enclosure the wider the dispersion. This applies down to the frequency where the enclosure width is one wavelength. At that point dispersion is 180 degrees. Below that you lose axial output, because the dispersion is wider than 180 degrees, so this sword has two edges.SethRocksYou wrote: ↑Mon Jul 27, 2020 7:06 pm More specifically, the dispersion angle of the mid range. Enclosure width wouldn't matter?
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
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