Tuba 60 Largest setup.

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virginiavenom
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Re: Tuba 60 Largest setup.

#16 Post by virginiavenom » Thu Oct 31, 2019 7:03 am

Bill I've been told to look into yamaha Concert Series Dual 18s vs a BFM. can you give me an honest comparison, I could swallow the cost of 4 of those without much difficulty

EDIT: specifically this model CW218V

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Bill Fitzmaurice
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Re: Tuba 60 Largest setup.

#17 Post by Bill Fitzmaurice » Thu Oct 31, 2019 7:16 am

Compare them yourself, using the SPL charts and voltage limiter settings for both. The Yamaha SPL chart is in the manual, according to that it would take two SW218v to equal the output of one 2x12 T60 with the same input. Yamaha doesn't list the displacement limited voltage, so that's anyone's guess.

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Re: Tuba 60 Largest setup.

#18 Post by SethRocksYou » Thu Oct 31, 2019 10:53 am

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Re: Tuba 60 Largest setup.

#19 Post by SethRocksYou » Thu Oct 31, 2019 11:11 am

At 25 to 35 hz it looks to me that it would take nearly 4:1, four of them to match what you already have.

Wait a sec, is their chart @ 1 watt/2 volt? Hmmm

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Chris_Allen
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Re: Tuba 60 Largest setup.

#20 Post by Chris_Allen » Fri Nov 01, 2019 4:50 am

The manual states the sensitivity as 98dB 1W/1m.
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6xDR200, 2xT39, 2xT48, 2xJack110, 1xOmni10.5, 1xAutotuba, 1xT18, 1xSLA Pro, 1xW8, 1xW10

Rich4349
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Re: Tuba 60 Largest setup.

#21 Post by Rich4349 » Fri Nov 01, 2019 2:50 pm

Why does their chart display up to 1khz? To make it look nice and plump and "full of sound"? Or do they realize many of *their* customers don't use limiters / crossovers? :wink:

If they ended it at 200 hz, it sure would look kinda lopsided, half empty.
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!

AcousticScience
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Re: Tuba 60 Largest setup.

#22 Post by AcousticScience » Mon Nov 04, 2019 3:00 pm

could I build a quad 15 cabinet and using the top of the bottom double for the bottom of the top double....if that makes sense..
I'm just picturing this monster roughly 5 foot cube now!
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virginiavenom
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Re: Tuba 60 Largest setup.

#23 Post by virginiavenom » Tue Nov 05, 2019 1:28 pm

a little crude, but yeah, that's the idea essentially.

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Strange Kevin
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Re: Tuba 60 Largest setup.

#24 Post by Strange Kevin » Wed Nov 06, 2019 6:53 am

So, I was thinking about your Quad Cab Monster Sub, and I like the idea, (if you have a big enough truck).
Although, if it were me, I'd keep the 4 individual subs and just strap them all to the same cart to keep the versatility of having separate subs.
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Bill Fitzmaurice
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Re: Tuba 60 Largest setup.

#25 Post by Bill Fitzmaurice » Wed Nov 06, 2019 8:03 am

Whether you have what's essentially four subs contained in the same box or in four separate boxes the whole will be equal to the sum of the parts, so I don't see the point.

88h88
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Re: Tuba 60 Largest setup.

#26 Post by 88h88 » Tue Nov 12, 2019 9:12 am

I don't even want to think about the logistics of getting to the inner drivers of a giant 4 cab, 8 driver beast in the event of one of them letting go...
4xOT12s, 2xT39s@22", TTLS@18", 2xT60@18"

AcousticScience
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Re: Tuba 60 Largest setup.

#27 Post by AcousticScience » Fri Nov 15, 2019 9:18 am

Well anyone know of any high power (1500-2000 w) high excursion (17-20 mm) drivers with similar spec to a Lab 12. This would enable more SPL out of the two cabs. Anyone with JTR Growlers from Jeff Permanian tried out the drivers in a T60? Or some crazy car audio 12 checking thiele small parameters. DC Audio Level XL 12 drivers look pretty good spec wise for anger blasting, apart from the Fs at 38 Hz but should still drive the horn well http://skyhighcaraudio.com/dc-audio-level-xl-12. Make sure you use the 4 ohm version or wire in series the voice coils and drivers if using the dual 1.0 ohm or 1.7 ohm. Other than that Wayne Parham's cooling plugs increase thermal power handling by more than twice if you're running heavy dubstep. I suspect the T60 uses up driver displacement more quickly than a Lab Sub but has more thermal handling.

Other than that, the only option is more cabs and boundary loading.

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Jason Stromberg
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Re: Tuba 60 Largest setup.

#28 Post by Jason Stromberg » Sat Nov 16, 2019 11:21 pm

AcousticScience wrote:
Fri Nov 15, 2019 9:18 am
Well anyone know of any high power (1500-2000 w) high excursion (17-20 mm) drivers with similar spec to a Lab 12. This would enable more SPL out of the two cabs. Anyone with JTR Growlers from Jeff Permanian tried out the drivers in a T60? Or some crazy car audio 12 checking thiele small parameters. DC Audio Level XL 12 drivers look pretty good spec wise for anger blasting, apart from the Fs at 38 Hz but should still drive the horn well http://skyhighcaraudio.com/dc-audio-level-xl-12. Make sure you use the 4 ohm version or wire in series the voice coils and drivers if using the dual 1.0 ohm or 1.7 ohm. Other than that Wayne Parham's cooling plugs increase thermal power handling by more than twice if you're running heavy dubstep. I suspect the T60 uses up driver displacement more quickly than a Lab Sub but has more thermal handling.

Other than that, the only option is more cabs and boundary loading.
Use the recommended driver and add more cabinets if needed.

Car audio drivers are not recommended, just follow the plans for best results.

AcousticScience
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Re: Tuba 60 Largest setup.

#29 Post by AcousticScience » Sun Nov 17, 2019 7:10 am

It's a tradeoff between "louder" and flatter frequency response. Drivers with thiele small parameters similar to recommended should work well. I checked moving mass and BL product vs DC resistance. Other than Thermal Power Handling = as much as possible and Xmax = as much as possible. The DC Audio drivers have 26mm of Xmax and 2000 watts of power handling, therefore should give around 6dB maximum SPL over a Lab 12 if "louder" is what OP wants.

If OP is going to be using Lab 12 in anger I'd recommend Wayne Parham's cooling plugs. No cooling plug = 40V RMS 50% duty cycle will eventually kill a Lab 12 after 2 hours
Cooling plug = Continuous power at 60V RMS possible, with some power compression that recedes after 10 seconds of continuous use. Tests were done with the magnet in open air so there was no sealed chamber to store heat. The centre pole piece inside the coil heats up with continuous heavy use and the voice coil doesn't cool as well.

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Jason Stromberg
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Re: Tuba 60 Largest setup.

#30 Post by Jason Stromberg » Sun Nov 17, 2019 8:07 am

AcousticScience wrote:
Sun Nov 17, 2019 7:10 am
It's a tradeoff between "louder" and flatter frequency response. Drivers with thiele small parameters similar to recommended should work well. I checked moving mass and BL product vs DC resistance. Other than Thermal Power Handling = as much as possible and Xmax = as much as possible. The DC Audio drivers have 26mm of Xmax and 2000 watts of power handling, therefore should give around 6dB maximum SPL over a Lab 12 if "louder" is what OP wants.

If OP is going to be using Lab 12 in anger I'd recommend Wayne Parham's cooling plugs. No cooling plug = 40V RMS 50% duty cycle will eventually kill a Lab 12 after 2 hours
Cooling plug = Continuous power at 60V RMS possible, with some power compression that recedes after 10 seconds of continuous use. Tests were done with the magnet in open air so there was no sealed chamber to store heat. The centre pole piece inside the coil heats up with continuous heavy use and the voice coil doesn't cool as well.
If it was your cabinet by all means do as you wish but giving bad advise to another forum member is not the correct thing to do. :slap:

Follow the plans.

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