We'll wait for an update on the surgery and the promp recovery of the lost bass :bigsmile: . :T
About to go into sub surgery.
5
Thought I would start a thread about my sub's upcoming surgery. I ordered two 15" pr's from DIY Cable so they will show up middle of next week. The sealed 12" TC2K in the 3.1 ft cabinet is not cutting it for me anymore. Dunno, maybe it's the ep 2500 slowly beating it into submission?
Here is the cabinet that is about 12 years old:
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It is really over built, weighs about 150 lbs. A 3/4" vault of MDF with a double front baffle, to complete internal braces, and wrapped in 3/4" oak plywood. Not looking forward to cutting it open!
It is powered by the ep 2500 and eq'd with a bassis lt.
The plan is to cut it open, clear out some of the bracing, (and a few big handful's of stuffing!)and add a pair of these:
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To come up with this:
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As it is modeled, you can see much more thump down low, where it will be appreciated since it is mostly HT use. I will probably dump the Bassis and just use a clean box I have lying around. I'll keep the bassis and build a sealed maelstrom if things don't go well!
Anyway, this sub lives in a corner of my modest HT, and the footprint is close to max WAF. It is bounded by a wall on PR, and a tower speaker on the other PR. I can keep about 5" around the three sides. The room itself is an acoustical nightmare, but ya gots to work with what ya gots.
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That cabinet has already gone through 2 NHT 1259's before it got the TC upgrade.
Really, hoping this works. :bigsmile:
Here is the cabinet that is about 12 years old:
It is really over built, weighs about 150 lbs. A 3/4" vault of MDF with a double front baffle, to complete internal braces, and wrapped in 3/4" oak plywood. Not looking forward to cutting it open!
It is powered by the ep 2500 and eq'd with a bassis lt.
The plan is to cut it open, clear out some of the bracing, (and a few big handful's of stuffing!)and add a pair of these:
To come up with this:
As it is modeled, you can see much more thump down low, where it will be appreciated since it is mostly HT use. I will probably dump the Bassis and just use a clean box I have lying around. I'll keep the bassis and build a sealed maelstrom if things don't go well!
Anyway, this sub lives in a corner of my modest HT, and the footprint is close to max WAF. It is bounded by a wall on PR, and a tower speaker on the other PR. I can keep about 5" around the three sides. The room itself is an acoustical nightmare, but ya gots to work with what ya gots.
That cabinet has already gone through 2 NHT 1259's before it got the TC upgrade.
Really, hoping this works. :bigsmile:
1 - 16 of 16 Posts
Made a new file.
Orange is with one PR, 800 grams added, tuning is 18.6 hz. You are limited to 350 watts input power as that will cause the PR to reach its maximum excursion. It's still an 11 db gain at 20 hz compared to sealed.
![Text Oscilloscope Line Slope Plot]()
Orange is with one PR, 800 grams added, tuning is 18.6 hz. You are limited to 350 watts input power as that will cause the PR to reach its maximum excursion. It's still an 11 db gain at 20 hz compared to sealed.
Yellow - 12" TC-2000 in 3.1 cu.ft., 650 watts input power, Xmax reached at 20 hz.
Pink - Maelstrom in 6 cu.ft. sealed, 1500 watts input power, Xmax reached at 8 hz.
![Text Line Slope Parallel Pattern]()
Pink - Maelstrom in 6 cu.ft. sealed, 1500 watts input power, Xmax reached at 8 hz.
So I would no longer have to employ the 20 hz filter, correct?
I have left it on the tc sub, because as you can see in the pictures, it is starting to bend the cone a bit when it got left off. Not sure which movie, but it once in while, it made some bad noises. The expensive kind of bad... Sounds fine now, and I keep the 20 hz filter on.
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Since there has to be very little in dvds that low, it would be safe to just watch a movie at normal to moderate volumes, and have head room galore? (My ultimate goal)
I have left it on the tc sub, because as you can see in the pictures, it is starting to bend the cone a bit when it got left off. Not sure which movie, but it once in while, it made some bad noises. The expensive kind of bad... Sounds fine now, and I keep the 20 hz filter on.
Since there has to be very little in dvds that low, it would be safe to just watch a movie at normal to moderate volumes, and have head room galore? (My ultimate goal)
1 - 16 of 16 Posts
