Subtilis 12

[RAM_Designs 5,000+ posts]

Every model I've done so far makes these woofers look like absolute studs //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif
Quite easy to make flat. Also easy to get a sizable peak at tuning for those who prefer that sort of thing.

I'd really like to try one out, I just don't have the money to swing right now, and too much other crap laying around that I need to sell. I'd love to try one in 2-2.25ft^3 at 25hz though.

 

[Brian_smith06 10+ year member]

Now would be the time to order one or multiples if your really interested. They are doing a pretty nice presale on them.

 

[*SlappinAzz*]

A wall of 4 of them would be cool, But even cooler if they had 15's.

 

[Bumpin' Goalie 10+ year member]

Yeah.

$120ea shipped is an unreal price!

And people, feel free to PM me with any questions on ordering, response curves, etc.

A wall of 4 of them would be cool, But even cooler if they had 15's.

Be patient //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

I'd really like to try one out, I just don't have the money to swing right now, and too much other crap laying around that I need to sell. I'd love to try one in 2-2.25ft^3 at 25hz though.

I want to do something similar. But with a pair //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[sundownz Pro Seller]

Performance is quite good on these drivers... IMO the 1w/1m numbers are fairly irrelevant for a sub-woofer since it is a 1 khz measurement. Any sub-woofer with good low-end extension in a small box will have a low 1w/1m rating (Hoffmans Iron Law) -- and these are the units most desirable for car audio as space is at a premium in a vehicle.

Compare it on a model with a woofer with a 1w/1m, say, 3-6 dB higher (also a 12") in a small box and see which one is louder at 30-35 Hz even on equal power //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[audioholic 5,000+ posts]

sundownz is right on the money. Hoffman's Iron Law tells us many times its actually preferable to have a low efficiency subwoofer.

Also, efficiency is not a good indicator of how well a sub will do with SPL. IOW, low efficiency does not mean it would make a bad SPL driver. SPL subs these days have massive and exrtemely stiff suspension systems, not exactly the recipe for high efficiency. But many people think SPL subs are super efficient simply because they are only considering the peaky response they tend to have (given their installs).

 

[sundownz Pro Seller]

This driver features a heavy duty 50mm WW copper coil with vented 8 mil 2.5" diameter aluminum former, extremely strong cone (as thick as most big boy SPL drivers), and a high quality butyl rubber surround.

Spider is a double layer predominately nomex material unit with flat, tied down leads. For resistance to abuse it features the same tooled triple joint support ring as our SA-12 driver and also our frame spacer to bring x-mech up to 36mm before any rearward collisions (this is beyond x-mech of the spider so it's essentially impossible without stretching the spider material). In prototype testing we found that the driver was capable of reaching 26mm of rearward throw without issue when more than rated power was applied (which is the maximum x-mech with no spacer) so the spacer was added for production to increase the distance from the triple joint ring to the top plate by 10mm to prevent the potential for mechanical damages even when pushed beyond rated power.

It is really not similar at all to the ICON other than in appearance of the tall and relatively narrow stacked motor -- I believe the ICON is a 3" coil unit as well, this driver is a 2.5" coil design.

Since I aided with the design I'm sure some folks are wondering if this is similar to the SA woofer -- the answer is no. The coil of the Subtilis unit is a bit longer, top plate shorter, pole extension higher, cooling different, back plate thinner, magnet stack narrower and taller (totally different motor in nearly every way), cone different, surround different, dust cap different, frame different. Essentially an all new driver save a few custom tooled parts re-used (spacer and triple joint ring).

You can use nearly identical enclosures for the SA-12 and Subtilis 12, though -- they both like compact enclosures with low tuning.

 

[hrtbrk1 5,000+ posts]

whoa that was informative!

 

[SPLaudio 5,000+ posts]

would like to see a freeair test and a pix of the coil. the vid that was taken earlier was of poor quality. just want to see the sub not a car with a lil rearview mirror shake.

do a few burps in the enclosure you can buy with the sub. put it thru its paces please...

 

[audioholic 5,000+ posts]

This driver features a heavy duty 50mm WW copper coil with vented 8 mil 2.5" diameter aluminum former, extremely strong cone (as thick as most big boy SPL drivers), and a high quality butyl rubber surround.
Spider is a double layer predominately nomex material unit with flat, tied down leads. For resistance to abuse it features the same tooled triple joint support ring as our SA-12 driver and also our frame spacer to bring x-mech up to 36mm before any rearward collisions (this is beyond x-mech of the spider so it's essentially impossible without stretching the spider material). In prototype testing we found that the driver was capable of reaching 26mm of rearward throw without issue when more than rated power was applied (which is the maximum x-mech with no spacer) so the spacer was added for production to increase the distance from the triple joint ring to the top plate by 10mm to prevent the potential for mechanical damages even when pushed beyond rated power.

It is really not similar at all to the ICON other than in appearance of the tall and relatively narrow stacked motor -- I believe the ICON is a 3" coil unit as well, this driver is a 2.5" coil design.

Since I aided with the design I'm sure some folks are wondering if this is similar to the SA woofer -- the answer is no. The coil of the Subtilis unit is a bit longer, top plate shorter, pole extension higher, cooling different, back plate thinner, magnet stack narrower and taller (totally different motor in nearly every way), cone different, surround different, dust cap different, frame different. Essentially an all new driver save a few custom tooled parts re-used (spacer and triple joint ring).

You can use nearly identical enclosures for the SA-12 and Subtilis 12, though -- they both like compact enclosures with low tuning.

50mm would be a 2" coil, not 2.5". //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[sundownz Pro Seller]

50mm would be a 2" coil, not 2.5". //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

Everyone misses where I say "WW" after the 50mm part.

It's a 2.5" diameter coil with a "Winding Width" of 50mm (2") -- also referred to as winding height.

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[twistedchild420 5,000+ posts]

What's the most these things can take......might be a nice choice for the wifes car

 

[audioholic 5,000+ posts]

Everyone misses where I say "WW" after the 50mm part.
It's a 2.5" diameter coil with a "Winding Width" of 50mm (2") -- also referred to as winding height.

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

You are right, I didn't see it the first time I read your post. My bad.

 

[pimpolligist16 10+ year member]

i thank i will be buying this sub thanks for all your input on the sub

 

[*SlappinAzz*]

would like to see a freeair test and a pix of the coil. the vid that was taken earlier was of poor quality. just want to see the sub not a car with a lil rearview mirror shake.
do a few burps in the enclosure you can buy with the sub. put it thru its paces please...

I think this is the sub freeairing, not sure.

http://www.youtube.com/watch?v=inte_l2wRgA