Alternate 10" driver options for Auto Tuba

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commander_dan
Posts: 461
Joined: Sun Feb 16, 2014 7:19 pm
Location: Perth, Western Australia

Alternate 10" driver options for Auto Tuba

#1 Post by commander_dan » Fri Jan 04, 2019 4:36 pm

Hi all,

Been a while. I'm considering building a couple of auto tubas and am keen to get the best bang for effort. I can get a pair of the Dayton 10" recommended drivers into Australia for $AUD339 delivered. Can the new KL3010LF-8 be used in this design? It's pushing the limits on a couple of the specs:

Fs 44.8hz (28-40 recommended)
Vas 47.33 (15-45 recommended)

Not sure if I would drop the coin on a pair of them as that would double the price for me, but am interested to know if they are an option.
Built:
6 T30 (24", 3012LF)
2 OT12 (MA, 3012HO)
2 T24 (18", 3010LF)

Running:
DCX2496
XTi 2002
XTi 4002
TRAKTOR Z2
TECHNICS 1210 Mk5's

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Bill Fitzmaurice
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Posts: 27327
Joined: Tue May 02, 2006 5:59 pm

Re: Alternate 10" driver options for Auto Tuba

#2 Post by Bill Fitzmaurice » Fri Jan 04, 2019 5:17 pm

The 3010LF is a pro-sound driver, not what you want to use in the AutoTuba. I imagine it would be well worth your while searching out drivers that you don't have to import from the US.

commander_dan
Posts: 461
Joined: Sun Feb 16, 2014 7:19 pm
Location: Perth, Western Australia

Re: Alternate 10" driver options for Auto Tuba

#3 Post by commander_dan » Sat Jan 05, 2019 4:13 am

Roger. Sounds like a tedious task but I'll see how I go. Aus seems to have plenty of places that stock drivers with no accompanying specs. Any aussies in the know who can point me in the right direction? *looks at Grant*
:D
Built:
6 T30 (24", 3012LF)
2 OT12 (MA, 3012HO)
2 T24 (18", 3010LF)

Running:
DCX2496
XTi 2002
XTi 4002
TRAKTOR Z2
TECHNICS 1210 Mk5's

Grant Bunter
Posts: 6447
Joined: Mon Nov 28, 2011 11:12 am
Location: Ilfracombe Queensland Australia
Contact:

Re: Alternate 10" driver options for Auto Tuba

#4 Post by Grant Bunter » Sat Jan 05, 2019 4:24 pm

commander_dan wrote:
Sat Jan 05, 2019 4:13 am
Roger. Sounds like a tedious task but I'll see how I go. Aus seems to have plenty of places that stock drivers with no accompanying specs. Any aussies in the know who can point me in the right direction? *looks at Grant*
:D
Hehehehe onya.

Talk to Keryn O'Shea about what he used in his AT. IIRC it was out of spec but the 8" he got performs well enough.

When I go looking for drivers, the usual suspects are: Cannon sound, JD's Sound and lighting, Swamp.net, VFM audio, DJ city.
You'll find drivers, but most of them lack the Xmax required.
Specs are often lacking, but a few of the above will either supply specs if you contact them, or tell you there are none (obviously, leave those drivers alone).
When that fails, Aussie ebay.

There was some listed drivers in the Aussie suppliers thread, don't know if that's still current.

Turns out WES components and The Loudspeaker Kit are both Dayton stockists in Australia, so maybe they could get in what you want too.

Darcher Audio look to have got away from Tang Band.

Good luck. If you find stuff that gets a nod, put it up in the Aussie suppliers thread please...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" BP102 , 2 x 28" 3012lf.
WH8: x 3 with melded array.
Bunter's Audio and Lighting "like"s would be most appreciated...

commander_dan
Posts: 461
Joined: Sun Feb 16, 2014 7:19 pm
Location: Perth, Western Australia

Re: Alternate 10" driver options for Auto Tuba

#5 Post by commander_dan » Sun Jan 06, 2019 9:59 am

Thanks for the clues Grant.

Quick comparison of these two drivers, which would give me more output?

1. DCS255-4 10" Classic Subwoofer 4 Ohm
Nominal Diameter 10"
Power Handling (RMS) 200 watts
Power Handling (max) 400 watts
Continuous Program Power --
Impedance 4 ohms
Sensitivity 91 dB @ 2.83V/1m
Frequency Response 31 - 200 Hz
Voice Coil Diameter 49.5 mm
Magnet Weight --
DC Resistance (Re) 3.45 ohms
Voice Coil Inductance (Le) 1.8 mH @ 1 kHz
Resonant Frequency (Fs) 37.7 Hz
Mechanical Q (Qms) 7.42
Electromagnetic Q (Qes) 0.50
Total Q (Qts) 0.46
Diaphragm Mass Inc. Airload (Mms) 95.5g
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) 0.19 mm/N
Surface Area Of Cone (Sd) 346.4 cm²
Volume of Displacement (Vd) 287.5 cm³
BL Product (BL) 12.6 Tm
Compliance Equivalent Volume (Vas) 32.1 liters
Maximum Linear Excursion (Xmax) 8.3 mm




or

2. RSS210HO-4 8" Reference HO Subwoofer 4 Ohm
Nominal Diameter 8"
Power Handling (RMS) 300 watts
Power Handling (max) 600 watts
Continuous Program Power --
Impedance 4 ohms
Sensitivity 85.7 dB @ 2.83V/1m
Frequency Response 30 - 1,500 Hz
Voice Coil Diameter 50.1 mm
Magnet Weight --
DC Resistance (Re) 3.6 ohms
Voice Coil Inductance (Le) 0.99 mH @ 1 kHz
Resonant Frequency (Fs) 29.6 Hz
Mechanical Q (Qms) 3.33
Electromagnetic Q (Qes) 0.46
Total Q (Qts) 0.40
Diaphragm Mass Inc. Airload (Mms) 99.3g
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) 0.29 mm/N
Surface Area Of Cone (Sd) 213.8 cm²
Volume of Displacement (Vd) 235.2 cm³
BL Product (BL) 12 Tm
Compliance Equivalent Volume (Vas) 18.7 liters
Maximum Linear Excursion (Xmax) 11 mm


My guess would be driver #1 due to higher vd, despite having less power handling and xmax.

The search continues..
Built:
6 T30 (24", 3012LF)
2 OT12 (MA, 3012HO)
2 T24 (18", 3010LF)

Running:
DCX2496
XTi 2002
XTi 4002
TRAKTOR Z2
TECHNICS 1210 Mk5's

User avatar
Bill Fitzmaurice
Site Admin
Posts: 27327
Joined: Tue May 02, 2006 5:59 pm

Re: Alternate 10" driver options for Auto Tuba

#6 Post by Bill Fitzmaurice » Sun Jan 06, 2019 4:54 pm

The difference between the two is slight. I'd get whichever is the less expensive.

commander_dan
Posts: 461
Joined: Sun Feb 16, 2014 7:19 pm
Location: Perth, Western Australia

Re: Alternate 10" driver options for Auto Tuba

#7 Post by commander_dan » Mon Jan 07, 2019 1:57 pm

Thanks Bill, DCS255-4 10" it is. Funnily enough, it's more expensive here in Australia than it is importing from the US. So my original costing stands. Next question, what size amp would I be best running off for this driver, and can you please give me a ballpark voltage limit? I'm guess somewhere around the 20-25V mark...
Built:
6 T30 (24", 3012LF)
2 OT12 (MA, 3012HO)
2 T24 (18", 3010LF)

Running:
DCX2496
XTi 2002
XTi 4002
TRAKTOR Z2
TECHNICS 1210 Mk5's

User avatar
Bill Fitzmaurice
Site Admin
Posts: 27327
Joined: Tue May 02, 2006 5:59 pm

Re: Alternate 10" driver options for Auto Tuba

#8 Post by Bill Fitzmaurice » Mon Jan 07, 2019 2:05 pm

It will take 200w/28v when high passed at 40Hz.

commander_dan
Posts: 461
Joined: Sun Feb 16, 2014 7:19 pm
Location: Perth, Western Australia

Re: Alternate 10" driver options for Auto Tuba

#9 Post by commander_dan » Mon Jan 07, 2019 5:24 pm

Great, thanks. Now to begin amp research..
Built:
6 T30 (24", 3012LF)
2 OT12 (MA, 3012HO)
2 T24 (18", 3010LF)

Running:
DCX2496
XTi 2002
XTi 4002
TRAKTOR Z2
TECHNICS 1210 Mk5's

Rayadh
Posts: 3
Joined: Wed Mar 06, 2019 5:19 pm

Re: Alternate 10" driver options for Auto Tuba

#10 Post by Rayadh » Wed Mar 06, 2019 7:40 pm

Hi all,
Does any here know if the "Kicker 8" CompC 4 Ohm SVC" Driver can be used in the AUTO TUBA?
The only spec off is the Qts (its a bit over the recommended)

Just wanna know if anyone used it before?
Please.
Thanks

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Bill Fitzmaurice
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Re: Alternate 10" driver options for Auto Tuba

#11 Post by Bill Fitzmaurice » Wed Mar 06, 2019 9:39 pm

How high? Subs made for auto sound tend to have high Qts, which is better for sealed subs, not so good for ported or horn loaded.

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Tom Smit
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Location: Sarnia, Ont. Canada

Re: Alternate 10" driver options for Auto Tuba

#12 Post by Tom Smit » Wed Mar 06, 2019 10:32 pm

The Qts of the CompC8 is .540, whereas the highest for the AT should be .33.
TomS

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Bill Fitzmaurice
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Re: Alternate 10" driver options for Auto Tuba

#13 Post by Bill Fitzmaurice » Thu Mar 07, 2019 7:42 am

The maximum recommended Qts for the AT is 0.50, so it's not out of the question. But the best results will be had when the specs are in the middle of the spec range, not at the extreme, let alone beyond that.

Rayadh
Posts: 3
Joined: Wed Mar 06, 2019 5:19 pm

Re: Alternate 10" driver options for Auto Tuba

#14 Post by Rayadh » Thu Mar 07, 2019 7:50 am

@Tom Smit ,The recommended Qts for the AT is .30 to .50.
the CompC8 is .540 as you said
@Bill , Would that be a big difference in sound?

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Bill Fitzmaurice
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Re: Alternate 10" driver options for Auto Tuba

#15 Post by Bill Fitzmaurice » Thu Mar 07, 2019 8:53 am

The main effect would be slightly lower sensitivity.

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