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Old 5th September 2019, 03:06 AM   #31
rnbmccain is offline rnbmccain
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Default Keystone?

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Originally Posted by rnbmccain View Post
I've had four back surgeries and I can tell you that two 810 cabs and something that will go down to two ohms to run them, is the holy grail of bass guitar.
Can you give me a link on Keystone?
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Old 5th September 2019, 03:23 AM   #32
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Originally Posted by freddi View Post
fwiw I think a 2/3 scale T18 looks pretty good when 2 cabinets are run

just ~60 liters airspace per box

Click the image to open in full size.
Thank You, Freddi! I will test with the Dayton pa310 12"
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Old 5th September 2019, 03:25 AM   #33
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Originally Posted by Rademakers View Post
I hear he has an e-mail address but he won't respond if you call him a creature
Thank You.
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Old 5th September 2019, 05:29 PM   #34
weltersys is offline weltersys  United States
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Originally Posted by rnbmccain View Post
Can you give me a link on Keystone?
Keystone Sub Using 18, 15, & 12 Inch Speakers

As the designer of the Keystone sub, I can say that it would not be my first choice as a bass guitar speaker unless using it below something that sounds good above 200Hz or so.
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Old 7th September 2019, 09:11 PM   #35
freddi is offline freddi  United States
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EV T18
fwiw PA310 basic sim. It should hold down 40v peaks within its xmax rating. In a Karlson 12 crossing over to a slotted pipe tweeter, its murky as hell compared to Kappa12a - but that may not be the way it sounds with bass guitar. It might have a nice balance.


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Old 15th September 2019, 09:26 PM   #36
rnbmccain is offline rnbmccain
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Originally Posted by weltersys View Post
Keystone Sub Using 18, 15, & 12 Inch Speakers

As the designer of the Keystone sub, I can say that it would not be my first choice as a bass guitar speaker unless using it below something that sounds good above 200Hz or so.
Go on Partsexpress.com and look under ProAudio, they list all the speaker specs., and they will even give tech info on box size and porting. I like parts express.
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Old 15th September 2019, 09:45 PM   #37
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The CUBO 12 is not the same as the T18 internally but I like the box size. I would like a shot at the port like on a T18. That would allow for more definition and projection with a bass guitar. This kind of box does double the duty of a bass reflex box using less power.
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Old 15th September 2019, 09:48 PM   #38
rnbmccain is offline rnbmccain
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My brother is a cabinet maker, He has two T18's in my shed and two more in cutouts. T18's are not for gigging bass players or small club's but a T12 is just the box to handle big and small. How do I get the right numbers for a T12 because the Cubo12 is a bandpass box.
My bad, the CUBO12 is not a bandpass box.
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Old 16th October 2019, 03:40 AM   #39
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Default 212

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Originally Posted by rnbmccain View Post
Thank You, Freddi! I will test with the Dayton pa310 12"
More on that: I have used 2 112 boxes outside with Dayton's pushed as far as I dare. The P.A. guy says that they sound great. Well then, Two midget T18's
should make everything twice as good.
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Old 20th October 2019, 09:36 PM   #40
freddi is offline freddi  United States
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EV T18
if T18 were scaled 0.83X for a 15" it would tune much like the old JBL C40 "Harkness". The Harkness should be stronger around 150Hz but otherwise pretty similar. A little Karlson box tuned ~55Hz (say 27"H x 20"Wx 13.5"D) about 32 liters smaller than the 0.83 scaled T18 would be about as good but probably a more subdued midrange - oh maybe not as the Karlson's on is facing outwards - lol

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Last edited by freddi; 20th October 2019 at 09:54 PM.
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