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Old 5th October 2009, 08:12 AM   #1
FlipC is offline FlipC  United States
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Default Infrasonic Addiction ...

Quote:
Infrasonic vibrations, though harmful, can be pleasantly stimulating in mild levels. The effects of brief, mild exposure can give a feeling of invigoration for hours. While a person may FEEL invigorated and euphoric, his body is being subjected to an elevated heart rate, elevated blood pressure, a release of endorphins, and the "fight or flight" adrenaline response. Feeling the effects of high-intensity/low-frequency sound can actually become an addiction, partially due to the release of endorphins in the body.
Now I know why I am junkie
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Old 6th October 2009, 12:11 AM   #2
jbell is offline jbell  United States
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The effects of brief, mild exposure can give a...


who said anything about mild?????
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Old 6th October 2009, 01:40 AM   #3
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Guess I need a little "fix".....

I'm with you Jim - what is this word "mild"????
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Old 6th October 2009, 02:43 AM   #4
FlipC is offline FlipC  United States
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I'm with you Jim - what is this word "mild"????
130 + Db 20-125 hz !

Nothing like having your testicles jump around in their sack all happy!
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Old 6th October 2009, 04:53 AM   #5
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Nearly there...for home theater at least.....

Already did a quad-driver home theater TH that makes over 126 dB in the room (my Rat Shack only goes to 126, and the horn had more left in it).

Got the response to 20 Hz part figured out. Since I trust my Rat Shack Meter, my Woofer Tester II and Hornresp implicitly, I've pretty sure that I've got drivers that will be able to get it done within x-max limits (for home theater use...). If not - there are other affordable options that will work nearly as well. I've got (more than) the half-kilowatt of honest power it will take me to get there, only three parts left to figure out.

A set of Mains/Center/Surrounds that will keep up (105 dB @ 1W or better, and handle the 100+ watts of power to get to 125+), sound GOOD with minimal EQ, yet still have reasonable spousal acceptance. I've got some good ideas here, but the size is getting troublesome.

How to fit two cabinets of 8 cubic feet each into my living room.
(not too hard - already have a pair of 6 cubic foot boxes in there THAT SUCK)

And how to fold 18 feet of horn into said 8 cubic feet.....
......unfortunately - this is the easiest of the three.
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Old 6th October 2009, 01:55 PM   #6
jbell is offline jbell  United States
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Originally Posted by FlipC View Post
130 + Db 20-125 hz !

Nothing like having your testicles jump around in their sack all happy!
ahh... so that's your definition of 'mild' ok... I accept that.


mike, 125 from your mains? really? I'm usually happy if my subs are outrunning my tops by about 10db... you sure you need your tops to keep up with your sub? (think equal loudness curve here...)

My brother's 7.1 is a big corner loaded horn and eight b2031's all driven by NAD power. (dual cabinet center channel) They are only good for 113 according to label, but HP at 85hz, and they can take a little more. I've found b2031p's to be fairly acceptable for HT, and usually find I can't build anything better for less money... at least for something that doesn't require eq... Funny thing is, you build grills for them, remove the behringer label... and it's amazing how much better others think they sound !!!

Last edited by jbell; 6th October 2009 at 02:01 PM.
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Old 6th October 2009, 04:35 PM   #7
FlipC is offline FlipC  United States
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Funny thing is, you build grills for them, remove the behringer label... and it's amazing how much better others think they sound !!!


How true.
Of pretty much anything at this point in time. After purchasing the Berry EP4K and having a look inside. This thing is built better than my Crown XLS. AND it cost less money even though it puts out more power.
I have a feeling that the big 3 audio are about to
go the way of the big 3 auto manufacturer's. Way of the dinosaur.
The Corpocracy is biting the hand that feeds ...

I haven't heard any of the Berry
speakers. I will have to give them a listen.


130-135 Db is the mild euphoric zone
135-140 Db is the pleasure zone.
140-145 Db is "how long can I take it" zone
145 + Db is F! this **** is LOUD and my head is starting to hurt zone.
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Old 6th October 2009, 05:13 PM   #8
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Quote:
Originally Posted by jbell View Post
ahh... so that's your definition of 'mild' ok... I accept that.


mike, 125 from your mains? really? I'm usually happy if my subs are outrunning my tops by about 10db... you sure you need your tops to keep up with your sub? (think equal loudness curve here...)
Well, that makes it a bit easier, I am almost there with what I have.

Color me a bit sheepish.

Anyhow - the options I am working through are falling in the 95 to 100 dB 1W range. All will handle 100 W (100 Hz and up) without breaking a sweat. Now I just need to find the time to cobble up some prototypes and see which ones I prefer (and which ones survive SWMBO's review).
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Old 6th October 2009, 05:34 PM   #9
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Quote:
Originally Posted by FlipC View Post


How true.
Of pretty much anything at this point in time. After purchasing the Berry EP4K and having a look inside. This thing is built better than my Crown XLS. AND it cost less money even though it puts out more power.
I have a feeling that the big 3 audio are about to
go the way of the big 3 auto manufacturer's. Way of the dinosaur.
The Corpocracy is biting the hand that feeds ...

I haven't heard any of the Berry
speakers. I will have to give them a listen.


130-135 Db is the mild euphoric zone
135-140 Db is the pleasure zone.
140-145 Db is "how long can I take it" zone
145 + Db is F! this **** is LOUD and my head is starting to hurt zone.
So - you're saying that life begins at 130 dB???

My EP2500 is built like a freakin' tank for what it cost me. My old QSC looks to be even better built, but it is an old school amp. As far as real power output - both push the meter firmly into stupid (defined as 2X overkill). I can only open up the big amps in the shop - my house does not have adequate power wiring (yet). Boom, boom, out go the lights....
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Old 6th October 2009, 06:14 PM   #10
wg_ski is online now wg_ski  United States
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Quote:
Originally Posted by littlemike View Post

My EP2500 is built like a freakin' tank for what it cost me. My old QSC looks to be even better built, but it is an old school amp. As far as real power output - both push the meter firmly into stupid (defined as 2X overkill). I can only open up the big amps in the shop - my house does not have adequate power wiring (yet). Boom, boom, out go the lights....

If you want an amp that can push the meter firmly into the stupid, try a CA18. That will show you the difference between a cheap amp and a not so cheap one. Oh yeah - and you'll need a 30 amp circuit if you're using pushing more load than 8 ohms stereo.
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