Driver choices for a Tuba 24.

[unkycraig]

Yep! Thanks!

[Fungtion]

Thoughts on using the newer Faital Pro woofer for the Tuba 24? Faital Pro 10RS430
Xmax of 13.5 seems huge for a pro audio driver. Nice low Fs of 32 Hz as well. 50w less power handling than the KL3010LF but I'm sure the extra 5mm of Xmax would make up for that? (Qts is .28)
What do you guys think?

https://www.parts-express.com/FaitalPRO ... quantity=1

[Bill Fitzmaurice]

Looks good, but not exactly a bargain price. The LaVoce SSF 102.50 comes very close in output at half the price.

[technicalfox]

I bought plans for the T24, and I'm at the driver selection stage. Ideally I would like to build the cab up to 20" wide - I have plenty of power and a DSP to run it. Application will be in an outdoor camping setup, run from a large lithium bank in my car. It basically won't be used inside as far as I can forsee.

Most of the charts I've seen posted here are using the S2010 or the BP102, but I'd like to get the most output I can from the single cab. I was primarily considering the SSF102.50L, currently $129. I also saw in another thread that Bill suggests the LS10-44 (Currently $135) for the AutoTuba/TruckTuba/TableTuba.

Is it possible for anyone to roughly compare the maximum output (either by experience or simulating) a single ssf102.50 in a 20" cab, a single ls10-44 in a 20" cab, or 2x ssf102.50 in a 24" cab vs 2x ls10-44 in a 24" cab?

Are there other drivers I might be missing for highest output from a single t24, either single driver @ 20" width or 2 drivers at 24" width?

Is there a point where 2x high output/high xmax drivers in a 24" cab would be inappropriate for the design?

Thanks!

[Bruce Weldy]

This is what's in mine.

https://eminence.com/collections/neodym ... ifications

[Bill Fitzmaurice]

From the plans, page 1: Power handling is determined by the driver xmax, not the thermal wattage rating, so don’t fall for high power ratings with skimpy xmax. The 11.5mm xmax of the SSF 102.50 gives almost the same output as two BP102, so while it’s expensive it may be worth it if you have more cash than pack space.

[Seth]

I bought plans for the T24...

If you have the ability to stow and transport a T39, I'd recommend it over the T24. Otherwise, the T24 is great in it's size category. Good luck with the build and feel free to ask as many questions as you like.

[technicalfox]

From the plans, page 1:

Thanks - I have read the plans top to bottom several times, searched this forum and others, and done plenty of auxiliary reading. I'm looking for more information than what is in them, or than the few frequency response graphs posted in this forum as well. I'm very experienced in the SQ car audio side of things, and I'm used to spending a lot of time with winisd to model a variety of subwoofer drivers and enclosure alignments for specific vehicles and use cases.

That's why I'm asking the specific questions that I did, which haven't been answered. I would model them myself if I had the experience to be confident with hornresp, but I haven't invested the time yet.

I'll also gently point out that the SSF102.50L actually doesn't fit into the recommended driver specs from the T24 plans with a VAS of 25L, but yet it's one of the top recommendations, so I'm just trying to get some feedback from those more experienced.

And unfortunately I don't have more space, the T24 at 20" width is actually pushing it in my application.

[Seth]

Is it possible for anyone to roughly compare the maximum output (either by experience or simulating) a single ssf102.50 in a 20" cab, a single ls10-44 in a 20" cab, or 2x ssf102.50 in a 24" cab vs 2x ls10-44 in a 24" cab?

While it is possible, it's rare for someone to invest the time and thought it takes to model and post results for a project they're not personally involved in or otherwise enthused about. I've been in your shoes and I know it's frustrating wanting to make informed decisions and the information I want seems like it should be readily available, and it's not.

Given your experience, I'm sure you're aware every driver will have a slightly different response in the cab. However, for the most part, the cabs overall audible sonic signature won't sound too different from one driver to the next even though it may measure slightly different. The best basic advice is buy the highest Vd driver you can find that's within the specs if you want the highest possible maximum output potential... that and build the cab as wide as you can possibly manage. Wider is free output, essentially.

Are there other drivers I might be missing for highest output from a single t24, either single driver @ 20" width or 2 drivers at 24" width?

I'm sure there are a good bunch of drivers within spec that aren't listed in the plans. While I encourage you to flex all the DIY freedom you can and see what you can scrounge up on the web, the tried, true, and usually available drivers in the plans are a no-lose safe option.

Is there a point where 2x high output/high xmax drivers in a 24" cab would be inappropriate for the design?

Whether you go single or double, if you can transport a 24" wide cab, I recommend you build a 24" wide cab. As far as there being a point where there's too much driver, yes it exists. Too much Vd can potentially produce chuffing, which isn't really that big of a problem most of the time. If you run into chuffing that's audible while playing music, just limit the voltage and know in your heart you're getting the absolute maximum output the cab has to offer. My guess is it probably wouldn't be a problem with the longer Xmax drivers similar to those listed in the plans. A little more likely if you found some sort of frankenstein 20mm Xmax driver and put two of them in.

I think it's important to note that a double loaded cab won't have the same response as the single loaded cab of the same width. Wider single loaded cabs typically have a little more extension and more sensitivity throughout the usable frequency range, where a dual loaded cab will have the response curve of two cabs of half the width, which will not have the same additional extension and sensitivity additional cab width provides. Using multiple cabs does benefit extension, so it will benefit a little there. The only reason to build a double loaded cab is when you need to use multiple drivers to manipulate the cab's overall impedance with series wired drivers. Otherwise, it's always advisable to build 2 half width cabs instead of a double loaded wider cab.