Sealed 3.9ft^3 Tumult Project - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 65 Old 08-02-06, 01:03 AM
Bob
 
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Re: Sealed 3.5ft^3 Tumult Project

After hearing my sealed sub go with sealed enclosure for sure.

The fact that you can raise the Q if you wanted to tighten and boost the 35-70Hz range for music. I ended with a Q around .78-.79 and the result is stunning for guitar and percusion work. I get reasonable SPL to 15Hz so Its all gravy.

~Bob
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post #22 of 65 Old 08-02-06, 11:22 AM
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Re: Sealed 3.5ft^3 Tumult Project

Quote:
Exocer wrote:
I wear size 13
Dang ...

I guess I'm using my sub project to make up for my own personal ... shortcomings. lol

Jim
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post #23 of 65 Old 08-02-06, 12:51 PM
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Re: Sealed 3.5ft^3 Tumult Project

Quote:
khellandros66 wrote:
After hearing my sealed sub go with sealed enclosure for sure.

The fact that you can raise the Q if you wanted to tighten and boost the 35-70Hz range for music.
The lower the 'Q', the more the output is damped by the alignment = tight.

The higher the 'Q', the lower the amount of damping from the alignment = less tight
 
post #24 of 65 Old 08-02-06, 01:08 PM Thread Starter
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Re: Sealed 3.5ft^3 Tumult Project

Jim...LOL. Hey you what they say about guys with big feet?....they wear big socks

I plan on having my Q nice and LOW for an almost critically (high) damped allignment.I still haven't decided what to do as far as amps. This thing is a beast....I couldn't have imagined it to be so heavy. It is roughly 3 times the weight of that Rythmik driver. The suspension is incredibly stiffer on the Tumult as well.

khellandros66, I'd almost feel comfortable saying your final Q of .78-.79 doesn't yield the flattest response and is a little underdamped for my liking. My sealed Rythmik, without interaction from EQ/Servo, has a natural Qtc lower than .707 (.707 yields the flattest response) which is possibly why its so tight. The Tumult should be even tighter assuming its T/S parameters are close to spec which may be a mystery for a while as I don't plan on buying the Dayton woofer tester any time soon...

If you don't have a BFD for your sub, get one fast!
If you don't have REW, get it now!
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post #25 of 65 Old 08-03-06, 04:14 PM Thread Starter
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Re: Sealed 3.5ft^3 Tumult Project

Well I honestly thought steve was sending me a heavy tan colored box...boy was I wrong! Nothing special but definitely exponentially better than a tan MDF box.

If you don't have a BFD for your sub, get one fast!
If you don't have REW, get it now!
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post #26 of 65 Old 08-03-06, 04:45 PM
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Re: Sealed 3.5ft^3 Tumult Project

Oh you just SUCK! All you have to do is drop it in and go. Very cool!

Well, fire that thing up and tell us how it is. Do you have an amp to run it until you get the 2500?

Jim
Houston, TX

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post #27 of 65 Old 08-03-06, 05:33 PM Thread Starter
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Re: Sealed 3.5ft^3 Tumult Project

Quote:
FlashJim wrote:
Oh you just SUCK! All you have to do is drop it in and go. Very cool!

Well, fire that thing up and tell us how it is. Do you have an amp to run it until you get the 2500?
Nope...no amp till the 2500. Maybe i'll unhook the Rythmik just to play around

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post #28 of 65 Old 08-03-06, 06:40 PM
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Re: Sealed 3.5ft^3 Tumult Project

Quote:
ThomasW wrote:
The lower the 'Q', the more the output is damped by the alignment = tight.

The higher the 'Q', the lower the amount of damping from the alignment = less tight
Thomas, the new enclosure (I built) has an internal volume of around 33 liters (12.5in x 13.25in x 13.25in). The only dampening I used was a 12.5in x 24in long sheet wrapped around the crossbrace. I don't know the exact weight of the batting in there. IMO the bass is very clean and tight, more so then most of commercially built sealed subs I have heared.

BTW: I am using the following

Dayton RSS315-HF
PE 500w RMS Bash

~Bob
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post #29 of 65 Old 08-07-06, 01:25 PM Thread Starter
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Re: Sealed 3.5ft^3 Tumult Project

Quote:
khellandros66 wrote:
Thomas, the new enclosure (I built) has an internal volume of around 33 liters (12.5in x 13.25in x 13.25in). The only dampening I used was a 12.5in x 24in long sheet wrapped around the crossbrace. I don't know the exact weight of the batting in there. IMO the bass is very clean and tight, more so then most of commercially built sealed subs I have heared.

BTW: I am using the following

Dayton RSS315-HF
PE 500w RMS Bash

~Bob
Nice setup there. If i were looking for something smaller for music only use i'd go that route.

Box should be arriving soon!

If you don't have a BFD for your sub, get one fast!
If you don't have REW, get it now!
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post #30 of 65 Old 08-07-06, 01:41 PM
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Re: Sealed 3.5ft^3 Tumult Project

I thought you had already received the box. I was hoping to hear that you've been listening to it all weekend.

Jim
Houston, TX

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