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Help!!!!

Attack of the acronyms!

Watch out buddy, I have a horn and I know how to use it!
 

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Discussion Starter #143
Ya. I still can't figure that one out. Back on subject...my horn is working awesome. Thundering, and what really gets me is the low volume response. It's incredible! It blows all my friends away too. It's so fun. I had someone over the other day who hasn't experienced it yet. Or seem it. And with the lights low, and the box painted the same as the walls...lets just say he was surprised. Then I explain the driver, the cost, and the amp. No one believes me.
I do wonder what it would be like under the influence of a "real" sub amp...maybe 300 watts of clean low end power.
 

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Hey sorry for bothering you i'm trying to duplicate the trio 12 loaded design with my own 12 inch jl audio subwooer
was wondering if you can help me with the design?
 

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Hey sorry for bothering you i'm trying to duplicate the trio 12 loaded design with my own 12 inch jl audio subwooer
was wondering if you can help me with the design?
Well I'll tell you what I can do.

If you post the model number, I can look up the Thiele/Small parameters and see if you have a winner or not.

I can run a simulation to determine what the output of your subwoofer might be.
 

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Thank you so much for the quick reply and for helping me!
i have 2 choices: jl audio 12W3v2-D4 i have only one driver
second choice: polk audio db1240 i have 4 drivers of these and a yamaha p3500s amplifier with 900 watt bridged to power any of them.
i don t mind using several drivers and have around 300 cm height, 50 cm width, 50 cm depth to fit the sub. Lowest frequency is a priority.
Thanks again!
 

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What is your lowest frequency you are looking to reproduce?

Second problem, and it is really big one.

The Ultimate subwoofer is 44.5 cm tall x 81 x 234 cm.

It is efficient, goes down to 14 hertz but will have zero chance of fitting into the space you are asking for.

Pus this thread is for an existing completed design. Not for a redesign. For that you would have to contact me off of this website on my own website.

Generally speaking a driver well suited for a front loaded horn is light, high BL greater than 20 and high efficiency.

The majority of car audio drivers do not fit that description. But there are exceptions.

I will do the calculations and you will be able to see what your two driver suggestions will accomplish.
 

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So this is the JL Audio driver.

JL versus Dayton One watt.png

JL in Black Dayton PA310-8 in grey. 1 watt input for each.

Most of the deep troughs clear up as you have this in a room.

The frequency response gets the marketing approved seal of plus or minus 3 db.

I'd say that this JL Audio driver is a pretty good choice.

Here is maximum output before you loose X-max:

JL Max SPL 125 watts.png

125 watts

JL Max SPL 125 watts Displacement.png
 

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Polk Audio db1240:

One watt input:

Polk One watt.png

Compared to JL Audio driver:

Polk versus JL One watt.png

JL in grey Polk in black.

Maximum Output before X-max:

Polk Max SPL 50 watts.png

This is with 50 watts input.

Polk Audio Max SPL displacement 50 watts.png

Maximum Displacement. Again 50 watts input.

Polk Audio Versus Dayton PA310-8 1 watt input.png

Polk Audio driver versus the recommended driver. One watt input for each.
 

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14 hz is pretty good for me
and i'll try finding a place for the sub,make it fit,it's pretty well worth it!
and was there supposed to be any pictures or graphs? i don t see anything..
is the jl more suitable?
 

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Fixed my missing graphs.
 

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Many thanks :smile:
unfortunately i live in lebanon and it's almost impossible do get other kind of subs including the dayton one.
i take it the JL is a good substitute right?
i've tried reading the hornresp information you included before, still having problems explaining them and translating them into some wood dimensions
i'd really appreciate it if you can help me out with that :smile:
 

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The JL will work.

Much deeper areas where the response is not so good. But if you have a home similar to some of my Lebanese friends, it is either cement block or stone. The response will be much better in that type of a home.

If you want the plans send me a private message.
 
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