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Lexus IS-F - 6th order Isobaric Clamshell Bandpass (video page 5)


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like i said in the beginning, this is experimental. Todays woofers are not like the woofers of the past and i don't know that they like being "clamshelled" like that.

very good observation

the high xmax of todays subs causes linearity issues when mounted isobaric

Blues car audio did something that may help in this situation though

keep the woofers in phase, just one behind the other, and enclose the cone of the back woofer and basket of the front woofer.

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ok i tried it in a brand new Audi hatchback. The verdict is, it sounds pretty damn good!! It does NOT sound aweful...but i need to make the ports bigger, seal every panel as if i am going to keep the box, and then try again. A leaky bandpass box is a shitty bandpass box and this thing is leaking everywhere lol - but it STILL sounded good. So i will experiment all week this week with it and decide by next weekend if i will keep it or not.

why a bandpass you ask? why not ported? i would LOVE to just do a ported box but getting the bass into the cabin is a problem with this car. I don't want to settle with just aiming the box backward. A proper bandpass will allow me to port up into the deck with just a few holes. That is already more then i want to do to my brand new car. (still new to me!). I usually save the butchering for after i have the pink-slip in my hand lol.

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like i said in the beginning, this is experimental. Todays woofers are not like the woofers of the past and i don't know that they like being "clamshelled" like that.

very good observation

the high xmax of todays subs causes linearity issues when mounted isobaric

Blues car audio did something that may help in this situation though

keep the woofers in phase, just one behind the other, and enclose the cone of the back woofer and basket of the front woofer.

leanne_isokit.jpg

thats really just another version of what i just did. Thanks though, glad to see other people searching this out after i brought it from the dead LOL :D Anyway, if i FAIL, at least i tried......and i have been wanting to try this for a while, but with 18's LOL!!

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Steve, you are making me feel old Bro. I used to design and built a lot of boxes back in the day of this style using Blaubox lol

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David said:

audio is a lifestyle, not a hobby

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anyone wanna see a video of the speakers getting busy in push/pull? :D i will upload a little of it tonight, even though its not finalized at all. Still looks interesting. :)

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anyone wanna see a video of the speakers getting busy in push/pull? :D i will upload a little of it tonight, even though its not finalized at all. Still looks interesting. :)

Oh yes indeed.

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On 6/6/2012 at 6:32 PM, 'LZTYBRN' said:

3. Don't put speakers outside the car unless you are the ice cream man.

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anyone wanna see a video of the speakers getting busy in push/pull? :D i will upload a little of it tonight, even though its not finalized at all. Still looks interesting. :)

Duh !!!

Awaiting vid :popcorn:

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