quote:Originally posted by Sassmaster: actually, 85 dB can damage your hearing after long intervals, (8 hours) and for every 5 dB you go up, the general rule is that the amount of time to permenantly damage your hearing is cut in half, so 85 dB = 8 hours 90 dB = 4 hours 95 dB = 2 hours 100 dB = 1 hour 105 dB = 1/2 hour 110 dB = 15 minutes 115 dB = 7.5 minutes 120 dB = 3.25 minutes 125 dB = 97.5 seconds 130 dB = 49 seconds 135 dB = 24.5 seconds 140 dB = 12 seconds
most hearing protection gives you a maximum of 29-31 dB of attenuation, and earmuff style generally tend to be lowe than that. also, they're not even tested up into the 160 dB range, so we don't even know whether or not they'd be effective at that SPL.
wish you would post at what freq thats done at. More than likely its at 1Khz or 4Khz and your ears are very sensitive to those freqs.
here is some reading material for everyone its basic stuff but could help some people.
car audio people seem to think that everything depends on the exact frequency played. this is a general rule, based on the effects of the damage caused by a standard music program. your hearing takes damage at all frequencies.
-------------------- What do you get when you argue with a moron?
posted
so when you see a chart that says your ear brum will rupture at 150db do you belive it??
Freq has alot to do with how much damage can occur. Turn off your subs and do a pressure check using pink noise and see how close you get to any of those #s you posted.
freq is very important and knowing that list is skewed is very important.
oh well this is off topic
back to how can a remote thats not wireless be incorporated into the rules or a burp button thats that could be done tastefully.
-------------------- ---Member of Team Gates---
Don't knock it, if you know nothing about it. Posts: 3071 | From: Okla USA | Registered: May 1999
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posted
I do not like the idea of external wired "burp" buttons, in the street class, but if they were allowed then I think they should be limited to the remote turn-on terminal of the amplifier(s). This way, they can be easily verified (that they are not controlling a hidden device) and can be installed and removed with little effort. Just disconnect the remote wire from the amplifier(s) and connect a toggle switch inline between the source unit and amplifier. Like I stated, I am not in favor of this idea. But, at the same time, I would like to entertain the thought that it (external wired remote control) is a possibility.
quote:Originally posted by Navidriver: The way i look at is none of the classes are cheap to be in. If you cant afford to buy a headunit with wireless remote probably not gonna be all too serious of a competitor anyway.
This is very true.
-------------------- In Loving Memory, David Alfaro
2008 U.S.Top Cert.Street C 158,4 2007 U.S.Top Cert. in street A,B,and C 2007 0-24 No-wall NSPL World Champion,World Record 157.9 2005 Db Drag Street A World Champion 2004 Db Drag U.S. record 642 points 2003 Db Drag Points World Champion http://www.maxxsonics.com/
Back in 02 my girlfriend said I had to make a choice between her and DB Drag....I told that b-tch I've made harder decisions at the Coke machine. Posts: 4013 | From: Suitland,MD USA | Registered: Sep 2001
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quote:Originally posted by Navidriver: The way i look at is none of the classes are cheap to be in. If you cant afford to buy a headunit with wireless remote probably not gonna be all too serious of a competitor anyway.
This is very true.
In EUROPE:
cheap RCA cable + ISO connector = 5 USD
HU that support remote + CD changer = 500 USD
Ok, there are also used HU's etc, but I also have used RCA for free at home Posts: 1820 | From: Ljubljana, Slovenia | Registered: Jan 2000
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posted
Sid thats all iam supporting at this time is a simple remote to the remote turn-on wire to the amp(s). Nothing more just to allow people not to have to buy a new HU or not have to jump for a 30sec enduro.
another thing that might work is a 5-10 sec track with a freq burp. I might post that on a different thread.
-------------------- ---Member of Team Gates---
Don't knock it, if you know nothing about it. Posts: 3071 | From: Okla USA | Registered: May 1999
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quote:Originally posted by Team Bio Meade916: im ok with protection, no matter the sound level........im just saying with those earmuffs on i can barely hear anything and im sure it would take more than 150db to be painful to the ear WHILE wearing them.
Its called liability!!! If someone can sue McD for spilling coffee on themselves, then Wayne has made right decision in not allowing people in car at 140 db.
ya, liablility........140db WITH hearing protection? thats like you sueing McD for spilling warm coffee, not hot. If 140db hurts your ears with ear protection on, you are in the wrong game here.
-------------------- Rockford Fosgate FiCarAudio Team PowerMaster
posted
Where it says that anybody needs new HU if wires outside car is allowed? People with wireles remote can still use them, people with wired FM modulator can use wired remote outside car, people that jumped out can still do that,
With only turn off/on, you cant change track. Many newbies don't know right frequency, so they can do couple of tests in 30 seconds if HU or remote is outside the car.
Posts: 1820 | From: Ljubljana, Slovenia | Registered: Jan 2000
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quote:Originally posted by Sassmaster: actually, 85 dB can damage your hearing after long intervals, (8 hours) and for every 5 dB you go up, the general rule is that the amount of time to permenantly damage your hearing is cut in half, so 85 dB = 8 hours 90 dB = 4 hours 95 dB = 2 hours 100 dB = 1 hour 105 dB = 1/2 hour 110 dB = 15 minutes 115 dB = 7.5 minutes 120 dB = 3.25 minutes 125 dB = 97.5 seconds 130 dB = 49 seconds 135 dB = 24.5 seconds 140 dB = 12 seconds
most hearing protection gives you a maximum of 29-31 dB of attenuation, and earmuff style generally tend to be lowe than that. also, they're not even tested up into the 160 dB range, so we don't even know whether or not they'd be effective at that SPL.
wish you would post at what freq thats done at. More than likely its at 1Khz or 4Khz and your ears are very sensitive to those freqs.
here is some reading material for everyone its basic stuff but could help some people.
ya i would agree with this........heres an example. When im installing an alarm and it trips while im next to the siren (during testing or something) i cant keep my face near it for longer than a few seconds........and what are most standard sirens, 125db? But i can listen to my system all day long - and have been for years. If your chart was accurate, i would be deaf a long time ago. Hell, i have the best hearing in my house and im the only nut who can stand my system for longer than a few seconds.
sorry to hijack........i forgot the original topic.........
ya ya, i have a wireless remote but i dont use it, i would rather be in the car.
-------------------- Rockford Fosgate FiCarAudio Team PowerMaster
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