Twin Towers BUILD LOG - Page 7 - AVS Forum
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DIY Speakers and Subs > Twin Towers BUILD LOG
kryptonitewhite's Avatar kryptonitewhite 03:08 PM 03-27-2010
Quote:
Originally Posted by Erich H View Post

Normally with the knob/tube wiring that you have they recommended not going over a 15 amp fuse. Yours look like someone installed 20 amp fuses which might not be the best idea.

Back when that wiring was installed, they didn't figure on the types of electrical needs we use today and that can cause issues.

The more power you pull through those lines, the hotter they get. Their insulation is not very good either. The reason you see 'most' of the wiring separated was to cut down on heat issues. It was recommended that they stay at least 3" apart at all times until those wires entered the fixture. And many times they came into the fixture at opposite ends of the fixture as well.


Going by past photos, it looked like the previous owners may have done some "handy man" type of fixes with the wiring and THAT'S where the main worry comes in. Any spicing must be put into junction boxes. If you ever do any insulating work to cut down on noise, you should NOT put insulation around those wires because they weren't designed to be covered up, which keeps the heat held inside. It's a significant fire hazard, especially if there's been bad splicing, wrong fuse upgrades, or the old insulation is in bad shape (which is almost always is).

One of your photos in this thread shows 2 wires touching and going through the floor. That's not the best thing, especially if you start pulling some decent power through those wires and they heat up.

I really hope you don't put both those amps on the same line. Also, if the 20 amp fuse blows, remember that it really should only be a 15 to start with. So please don't just get a larger fuse to keep it from blowing, that can be dangerous with that type of wiring. Your best bet (until you do some decent electric work) is to make sure your amps are on totally different lines. Going by the wiring, that's still not ideal, but certainly better.



And I know you don't want to hear this, but I really am trying to help. Please, please, please look very close for plaster cracks in the ceiling or walls on a regular basis. I have a 100 yr old home with the same type of plaster/lathe work. I would never subject it to extreme bass without some serious worries. My audio stuff is all in my basement, which was completely redone with double drywall and new electric.

That type of plaster work is simply not going to withstand the vibrations of serious bass. It's design just won't allow for constant vibrations. The plaster WILL separate from the lathe board. Maybe not immediately, but eventually it will fail.


I don't want to worry you, I just want to make sure you know this because I'm worried. About 8 yrs ago one of my buddies had a brother out of work. He was a painter and needed some money, so I let him do some odds and end painting in my home just to help him out. I was gone for the weekend and he was going to paint a bedroom. I noticed a crack in the ceiling plaster and a very slight sag. I told him to skip painting the ceiling because I wanted to go over it with drywall.

I get home and he didn't listen and tried painting that ceiling! He'd been standing on the floor pushing a roller back and forth on the 9' ceilings. Obviously that light sag and tiny crack were being pushed up and down as he went over it with the roller. Yeh, a 6'x6' section came crashing down. He said he was very lucky to move back towards the door way as it fell. He broke a finger and the plaster crushed his tiny step ladder and his tools. He apologized for trying to do the work and said he was lucky not to be standing directly under it.

So please keep this in mind, that plaster is VERY heavy. Picture someone dropping the equivalent weight of maybe 1.5 inches of mdf board on your head from 9' up. I see the kids in your pictures and it really does worry me.

Seriously man, I don't want to sound like I'm pissing in your bowl of Wheaties here, I'm not. Just know that I'd worry if you put two 15" subwoffers in that house, let alone what you're doing. And I'm not talking about just that room you're in, but the entire house. It might be cool to brag that the subwoofers brought down the house, but not if there's a person sitting underneath when it comes down ya know.

Either way, good luck.

and while I wait for my PC to self destruct, I will climb up my bed and begin crying

thank you for the info!

notnyt's Avatar notnyt 03:14 PM 03-27-2010
Quote:
Originally Posted by Erich H View Post

And I know you don't want to hear this, but I really am trying to help. Please, please, please look very close for plaster cracks in the ceiling or walls on a regular basis. I have a 100 yr old home with the same type of plaster/lathe work. I would never subject it to extreme bass without some serious worries.
....
So please keep this in mind, that plaster is VERY heavy. Picture someone dropping the equivalent weight of maybe 1.5 inches of mdf board on your head from 9' up. I see the kids in your pictures and it really does worry me.

He can easily solve this problem by framing a canopy over his ... "bleachers" ?

But then they wouldn't be bleachers since they have a canopy. Then again, bleachers are supposed to be outdoors =]
kryptonitewhite's Avatar kryptonitewhite 07:05 PM 03-27-2010
Quote:
Originally Posted by notnyt View Post

He can easily solve this problem by framing a canopy over his ... "bleachers" ?

But then they wouldn't be bleachers since they have a canopy. Then again, bleachers are supposed to be outdoors =]

ah that made me laugh!

BTW it was F10! Thanks guys!

So ya, i have a 100ft extention cord with EVERYTHING hooked to it..it's all I've got for now..and I'll have to run it to a better looking outlet. I'll look at the wire runs downstairs to see the least worst one.
Kanaris's Avatar Kanaris 08:01 PM 03-27-2010
Make sure that 100 ft extension cord is 12 g.
PassingInterest's Avatar PassingInterest 10:55 PM 03-27-2010
Um, wow.
I'm outta here.
dbldare's Avatar dbldare 07:00 AM 03-28-2010
Quote:
Originally Posted by kryptonitewhite View Post


BTW it was F10! Thanks guys!

Sweet!

Quote:
Originally Posted by kryptonitewhite View Post

So ya, i have a 100ft extention cord with EVERYTHING hooked to it..it's all I've got for now..and I'll have to run it to a better looking outlet. I'll look at the wire runs downstairs to see the least worst one.

You may wanna look to see if you neighbor has an outdoor socket you can plug into. LOL!


BE CAREFUL MAN! You're literally playing with fire.

dbl
kryptonitewhite's Avatar kryptonitewhite 07:41 AM 03-28-2010
I'll go get the largest gauge electrical wire I can get if I can get a little help setting up a breaker for it.
Erich H's Avatar Erich H 07:54 AM 03-28-2010
I was trying to look back at your past photos of the basement to see if I could find an easier way to add to your current fuse box, but the photos aren't showing up anymore. It says they had exceeded the bandwidth. Same with some of the photos at the beginning of this thread. Is there any access to those basement photos?
kryptonitewhite's Avatar kryptonitewhite 08:02 AM 03-28-2010
Ill take more..I had to create a new photobucket...they wont show the ones off the old account for 28 days
kryptonitewhite's Avatar kryptonitewhite 05:24 PM 03-29-2010









Kanaris's Avatar Kanaris 05:50 PM 03-29-2010
That there is speaker porn....
kryptonitewhite's Avatar kryptonitewhite 09:57 PM 03-29-2010
Quote:
Originally Posted by Kanaris View Post

That there is speaker porn....

And with all my porn, i like to start with pics till I'm bored..then step up to:

http://www.youtube.com/watch?v=dYpHR3jaXrk

http://www.youtube.com/watch?v=80rMXWDGjKU

http://www.youtube.com/watch?v=9znmJge5D7w
notnyt's Avatar notnyt 11:27 PM 03-29-2010
the videos are great and all (if you like getting motion sickness), but how about some measurements?
kryptonitewhite's Avatar kryptonitewhite 12:11 AM 03-30-2010
Quote:
Originally Posted by notnyt View Post

the videos are great and all (if you like getting motion sickness), but how about some measurements?

I just put the speakers in tonight.

I don't even have everything tweaked yet.

I dont have testing equipment.

I might test.

If I test, it won't be any time soon. I love how it sounds. (camera does terrible justice) So IDK if i'll measure anything.
kryptonitewhite's Avatar kryptonitewhite 08:13 AM 03-30-2010
Kanaris's Avatar Kanaris 09:36 AM 03-30-2010
Thats a whole lotta of bass..

Tell me one thing why do you leave the ports extended outta of the box?

They would look a lot better if they were flush.....
kryptonitewhite's Avatar kryptonitewhite 11:31 AM 03-30-2010
Quote:
Originally Posted by Kanaris View Post

Thats a whole lotta of bass..

Tell me one thing why do you leave the ports extended outta of the box?

They would look a lot better if they were flush.....

as you can see, looks are at the bottom of the list. I put a lot of effort into my Aztek ports... painted black once and chrome another, worked real hard each time to make it smooth into the box... but now I am into "2 free ends" so that both ends are equal and suspended into air...no working off the face of the box

I know my whole setup is UGLY but it sounds spectacular!
kryptonitewhite's Avatar kryptonitewhite 11:33 AM 03-30-2010
DragonSarc's Avatar DragonSarc 04:32 PM 03-30-2010
thats 2 insane bad @$$ subs there Krypt, way 2 thumbs up!!!!! awesome build cant wait for more
kryptonitewhite's Avatar kryptonitewhite 07:05 PM 03-30-2010
Quote:
Originally Posted by DragonSarc View Post

thats 2 insane bad @$$ subs there Krypt, way 2 thumbs up!!!!! awesome build cant wait for more

Thanks man! I'm lovin them, I was scared to do movies...takin things slow... WOTW's and DTS ain't no joke! But i got some star trek today, I get cable internet tomorrow..this wireless is terrible..takes me hours for 4 vids!

I can't wait till the 22's are done!
kryptonitewhite's Avatar kryptonitewhite 08:02 PM 03-30-2010













kryptonitewhite's Avatar kryptonitewhite 08:05 PM 03-30-2010
tsloms's Avatar tsloms 08:19 PM 03-30-2010
I think that your front speakers may be just a touch unbalanced to your subs now!!!!
mynym's Avatar mynym 08:21 PM 03-30-2010
Who is the lucky person who gets to sleep in the bass cavern?
mynym's Avatar mynym 08:31 PM 03-30-2010
How's it sound tuned higher now (after you cut the ports down)
kryptonitewhite's Avatar kryptonitewhite 08:48 PM 03-30-2010
Quote:
Originally Posted by tsloms View Post

I think that your front speakers may be just a touch unbalanced to your subs now!!!!

actually not really! For movies I have to keep the subs down, they reach high excursion pretty easy..but they sound amazing! For music I keep it down too but because I draw a ton more power and I want to go easy till I upgrade my electrical... I have a lot of firewood! hehehe


Quote:
Originally Posted by mynym View Post

Who is the lucky person who gets to sleep in the bass cavern?

I do! I love it! It really is a cavern, just jumping up to the platform then walking up the bleechers...nose bleed section... the whole setup all fits together. it's ... hard to explain really...but its neat!


Quote:
Originally Posted by mynym View Post

How's it sound tuned higher now (after you cut the ports down)

Much better...I didnt watch any movies with the 6.5Hz tuning... I was afraid to do movies because they peak and vary so much. WOTWs set to DTS I have the sub set to -10 with the volume on -16 to -13, Star Trek sub -3 volume -10, but music sub +12 volume no higher than -15.... the center channel gets strained on music when set to any 5 channel music option... or L and R get strained on stereo... and the lights dim when i turn it up too much with music.

But it sounds so awesome... every time I do another build, I build bigger and tune lower. There just really is more sub 30hz content than I think people realize, and, having the wider/flatter/lower responce curve just sounds so much better to me. With the port cut, I've been playing a lot of Gucci Mane... weird rap stuff but it's the lowest stuff I've found... the sound is HUGE. I don't mean as in loud and powerful, but it has a big sound to it...the highs are tight, crisp, punchy... the mid bass isn't over powering, and the lows are there at low volume...you don't have to crank it up and get more punch than you want in order to get the lows. I turned her down to -35 for a while, nice and low, and just layed there... and the real low stuff still rattled the windows and shook the bleechers..and i could hear the lows.

I love it!
kryptonitewhite's Avatar kryptonitewhite 07:08 AM 03-31-2010
I GOTTA YELL CUZ THIS IS SICK! first vid 11Hz sine wave at a pretty moderate level, shakes the whole house and rattles windows in the opposite end of the house a little louder than the old box used to...but the old box did it at 18Hz, this is 11!

http://www.youtube.com/watch?v=iRRkrYzLufY

So then I do it again, but part way in I turn it up to at least 2.5" p-p maybe even 3"... they still have room to go... but my clip indicators are solid... no clipping... I was barely even pushing the amps... and the subs had zero complaints!

http://www.youtube.com/watch?v=2lfEKsLCUCM
kryptonitewhite's Avatar kryptonitewhite 09:05 AM 03-31-2010
dhgilmer's Avatar dhgilmer 09:40 AM 03-31-2010
You know it is a big ole' box to make 18's look small in them
kryptonitewhite's Avatar kryptonitewhite 10:33 AM 03-31-2010
Quote:
Originally Posted by dhgilmer View Post

You know it is a big ole' box to make 18's look small in them

the 22's otta fix that problem
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