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7Hz for 7minutes over 100dB

post #1 of 8
Thread Starter 
7Hz for 7minutes over 100dB
1000 cubic feet, 20"x18"x22" port for a 5.24Hz tuning
(4) Fi IB3 18's
(2) Behringer EP4000s
1 very old house with the nastiest wiring you ever saw run off an antique 15A fuse box that can't properly and fully support 1 EP4000 let alone 2 plus the rest of this 1/2 of the household.

http://www.youtube.com/watch?v=QbrFENilHGY
post #2 of 8
Still impressive.

Refresh my memory on how the amps are powered,...are they sharing one circuit, different circuits,..or what? Distance to panel, and gauge? What do you mean, "15amp fuse box"?


Thanks
post #3 of 8
Thread Starter 
Hey FOH! Unfortunately things got worse with the new build and addition of the BFD.... the amps were going through a 15' cord each now they are back on the power strip. It is good because I don't want to buy fuses anymore and I feel a little more protected this way, though I almost never push it hard anymore. I dont have the BFD hooked up, both amps are on 1 power strip with a breaker (the bottleneck) and simply plugged into the outlet in the room, same circuit as the lights. The basment panel is probably 30' away give or take a bit and it is the old wires run separate with the glass knobs holding them to the joists. It's a normal fuse box with the screw in fuses. It's bad!
post #4 of 8
Thread Starter 
It's 20A

watch at your own risk my nasty basement and even worse electrical

http://www.youtube.com/watch?v=GhSeTyyCLc0


am I going to get an I told you so of sorts from not? 7Hz fail. I was wrong!
post #5 of 8
There's really nothing nasty about that old wiring as long as you don't screw it up badly or mess around with it too much. Gobs of houses still have it. They just update it as they work through the house.

But with some of yours being so easy to access, why not upgrade it? It would cost less than the spray foam you put in the van. Hard to believe you don't know any friends that can help you upgrade that stuff. It's not very expensive. If I lived closer, I'd stop by and help.
post #6 of 8
Thread Starter 
TBH I have been pretty broke for a while now, thats my only hang up. I'd grab a spool and fasteners and start laying if I could afford to... but as you said, I spent almost $300 last summer on Great Stuff alone! lol
post #7 of 8
Quote:
Originally Posted by Erich H View Post
There's really nothing nasty about that old wiring as long as you don't screw it up badly or mess around with it too much. Gobs of houses still have it.
+1

Knob and tube wiring was the gold standard for a long time. Yes, it will last virtually forever, as long as it's not messed with. With age, brittleness sets in, and once you begin disturbing it, issues arise. Knob and Tube in open air, it's thermal properties are better as it dissipates heat easier.



Quote:
But with some of yours being so easy to access, why not upgrade it?
It's not very expensive. If I lived closer, I'd stop by and help.
It is nice and accessible, that's huge when approaching something like this. Don't dig into it if you're not familiar with what you're doing.

WRT your service, typically one of your pull out fuse holders is your main, and the other perhaps another big load. Then there's the 4 20amp fuses, and the 30 amp tail panel off to the side. In a perfect world, you could use (2) 20 amp circuits to your amps. But I'd bet you could get by with one 20 amp circuit, as long as nothing else was combined with them. 10awg wire would be ideal, but 12awg would suffice.

Have you ever blown a fuse with the amplifiers, or do you merely trip the power strip breaker?
post #8 of 8
Thread Starter 
Thanks for both your offers guys, thats pretty cool of you both! For the 1st year we all know I ran the snot out of this hosues electrical. I managed to trip the breakers on the backs of the EPs once when I was running them strait off the wall socket. I blew 4 or 5 fuses around that same time as well, there spawned someone's signature " My fuse box is my HP - KW" or something to that effect. When i first built it everything bottleknecked at the power strip. I had the 2 EPs, the TV, receiver, and Bluray all on the strip. When I pushed it or a heavy scene came up, the EPs sucked too much power from the TV and/or receiver so the TV screen would go blank but the power light stayed on, and the receiver would flash... the auto detection flash... and so you would miss part of the movie. I left it like this for a long time but when Brandy got the black lights she got three 15' extention cords as well, 1 per EP to go strait to 1 wall socket, and the 3rd cord replaced the 35' extention cord I had the entire thing on that ran to another outlet. So I went from everything all on 1 power strip, power strip on a 35' cord all to 1 outlet.... to the TV, receiver, and blueray on 1 outlet on one circuit 15' cord and the 2 EPs on 2 15' cords on a separate circuit. When i did this it got much louder. So i started playing again to find the new limits, and it would blow a fuse killing the lights but not the tv receiver and blue ray... so thats when i learned they were on their own circuit as well. I left it like that until i tore the towers down. After 4 fuses I had my fill and just stopped pushing it so hard, and around that time was when my neighbor mentioned "wow thats loud!".
After I tore the towers down I became worried about my neighbor. He always said it was never an issue, he is never home, he just happened to hear it once as he was popping in and out. But ever since then I stopped playing loud at all. I didn't enjoy it when it got loud cuz I worried it would bother him. Jim sent me the BFD and I experimented with EQ, got to know the sound I wanted, then realized that no BFD and setting the crossover to 40Hz was cherry for my tastes. Even at a good volume it never gets overly loud. The 30hz on down does but it doesnt travel outside... its the 40Hz on up that goes outside for some reason. When I first put the 2 amps in the spare room I put them on 1 socket, but when i added the BFD I had to put the strip back in for 3 plugs. When I took the BFD back out I left them on the strip just to be safe. I have tripped the breaker a couple times on music but that was showing it off, not normal listening.
I dont think I have to worry unless I try to do 3Hz for 3 minutes :-P
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