Tempest sonosub Port help (Patrick Sun please) (1 Viewer)

[Rudy D]

I am following your plans for your tempest. I have a built in subsonic filter in my amp, but it is at 8 hz. So, I like your idea of the 16.5 hz tunning. My problem is that I cant find 6" pvc. Can I use 4" pvc, or 8" sonotube. And if so, what lengths would these need to be to keep the same tunning? Thanks for all replies.

 

[James Mudler]

I do not know if you have a Lowes anywhere, but they have 6" pvc. 10' for $13 here in AL. Better known as sewer and drain pipe.

 

[Patrick Sun]

You could only go with two 4" wide ports at 17" long if you can't find 6" wide ports (to fit it into the enclosure and not run into overly long ports).

8" wide ports would need to be really long (like 43").

 

[Rudy D]

I will try a few more places for the 6", but so far the home depot, and menards here in the northern suburbs of Chicago dont carry that size. No, there is not a Lowes around here. Thanks

 

[Dustin B]

Look for a sprinkler/irrigation place. They should carry it.

 

[James Mudler]

Rudy,

Home Depot here has it. It is outside in Lawn & Garden. Not the corrigated stuff. Its a blue/green color.

Go figure, the 6" stuff is outside at Lowes and HD NOT in the plumbing section.

As mentioned irrigation supply houses will probably have a short piece laying around vs having to buy 10'.

 

[Rudy D]

Ok, I will try again at the depot. That is one thing a hate about menards and the depot. A lot of people work there who know nothing about the things they deal with.

 

[Mike Strassburg]

Rudy D,

You'll probably have to go to a Commercial Plumbing Supply store. Look them up in the Yellow pages or do an web search.

I've got a piece of 6" PVC left over that's around 20"s long. How far are you from Beach Park? If you want it it's yours, and I'll do a formal measurement to make sure it's what you need. Let me know...Mike

 

[Rudy D]

Hey Mike, I live in Antioch. So, not too far. I need it to be 22.5" though. If you have that much let me know, and maybe we can get in touch. Thanks

 

[Patrick Sun]

Rudy, 20" would be just as good. Don't get too picky.

 

[Dustin B]

You could always make the enclosure a tad larger to compensate.

 

[Rudy D]

Hey Patrick, I didnt know how exact these measurements needed to be. what about the enclosure size? Can I make it smaller than 10cu ft, and if so, what will I sacrifice. It will be 50% HT 50% Audio. I want the best possible sound, so I will make it to what ever size that is. Thanks to all for the info.

 

[Patrick Sun]

If you make it smaller, you'll need a slightly longer port to get down to a tune of 16.5Hz for the enclosure.

If possible, go with my dimensions, or somewhat larger enclosure. If you start going smaller, you start compromising performance.

 

[Mike Strassburg]

Rudy,
Your in luck as there's 23+ inches left. I'll be home Sun/Mon so let me know when you want to stop by. Give me a call...847-774-1736
You might even be able to persuade me to give you a demo of my dual Tempest beast
P.S. Antioch is about 30 minutes away.

 

[Rudy D]

I will be home tommorrow. I will give you a call before noon. I would love to hear it. Thank you very much

 

[Rudy D]

tommorrow being monday

 

[Rudy D]

Thanks Patrick I will keep the 10 cu ft.

 

[Mike Strassburg]

Rudy..er Dave came by and picked up the 6" pipe today, so he's one step closer.
Was very nice to meet you and discuss this hobby (or sickness) of ours. I gave him a killer demo: AC/DC in DTS, U-571 depth charges, Matrix Lobby scene, etc...of my dual Tempest sub. Judging by the grin on his face he should be MIGHTY motivated right about now.
It was nice to get some feedback from someone with an "educated" ear, as family/friends just think it's too loud. He seemed very impressed by the accuracy, sound output, and how low it would go and make the whole house rumble.
He did give me a funny look when I told him I planned on building a second one when I move to a bigger house

 

[Rudy D]

Yeah, Mike did give me a great demo. Let me say I was extremely impressed. I used to work in the audio video industry. I would hook up whole house audio systems, surround sound sytems, and many other things. I have a very good ear as I have heard many different brands of speakers and many different pieces of equipment. Let me say " I HAVE NEVER HEARD ANYTHING LIKE THIS!!! WOW!!! I cant wait for my Tempest to arrive. I have all the pieces I need to build it now. Just anxiously waiting. None of my friends are into a/v the way I am. They all like what I have though. It was nice to meet someone with the same sickness in which we have. Wooohooo

 

[Mike Strassburg]

" I HAVE NEVER HEARD ANYTHING LIKE THIS!!! WOW!!!

Thanks for the kind words! I'm also VERY pleased with the audio portion of my set-up. Just a 3802, a bunch of used Legends & a diy sonosub, but it produces amazing sound with incredible SPL capabilities.

Now if only I could fit a 65" TV into my current spot.....:b