160db, realistic?
04-01-2007, 12:46 AM
#31
Seriously the old TL mic is about 7-10dB louder then the NEW TL sensor. No fooling i have lived through the change. I was crushed at the end of the year i was at 148 myself so my next year goal was 150. LOL then the sensor came out and the first show i was doing high 139s.... LOL boy was i disappointed.
04-01-2007, 08:20 AM
#32
Originally Posted by tg989
My previous setup in a 2000 neon (RIP concrete divider) was 2 jbl 15" w15GTi's running in full paralell off of a single bp1200.1 (1.5ohm) on a 10 fahrad tsunami cap witha pioneer premier 680mp source running things, all in a custom 7.8cu ft ported box tuned for 42hz (spl tune, sounded like crap for music) subs firing backwards and vented forwards (trunk was pooched on day 1) which equated to 148db.
The new setup will be a slightly smaller box (7.2 cu ft) with the same two subs, tuned-port for 32hz (to compliment the 15's ability to hit low) and pushed by a new jbl bpx2200 (~ 2.2kw rms @ 1.5ohm) on the same cap but with a new pioneer 980BT source unit and in a 300zx 2 seater with the subs behind the driver/passenger's heads firing forwards.
The old setup was severely power starved and the subs would only push to 1/2 their suspension limit at all, and thats on a short blast of sine wave -- they were not even getting their rms wattage from the amp before it would clip. The new amp can push the subs out to their suspension limits without breaking a sweat and it'll be wired on 0 guage instead of 4 in my previous setup, so I think I can squeeze another 12 db out of it assuming the airspace being compressed is also about 1/2 of what it was in the neon's cabin and hatch cars somehow always hit higher than a seperated trunk car.
So, anybody think 160 is unrealistic? I'll post some pics of the build-up when its done after easter weekend!
The new setup will be a slightly smaller box (7.2 cu ft) with the same two subs, tuned-port for 32hz (to compliment the 15's ability to hit low) and pushed by a new jbl bpx2200 (~ 2.2kw rms @ 1.5ohm) on the same cap but with a new pioneer 980BT source unit and in a 300zx 2 seater with the subs behind the driver/passenger's heads firing forwards.
The old setup was severely power starved and the subs would only push to 1/2 their suspension limit at all, and thats on a short blast of sine wave -- they were not even getting their rms wattage from the amp before it would clip. The new amp can push the subs out to their suspension limits without breaking a sweat and it'll be wired on 0 guage instead of 4 in my previous setup, so I think I can squeeze another 12 db out of it assuming the airspace being compressed is also about 1/2 of what it was in the neon's cabin and hatch cars somehow always hit higher than a seperated trunk car.
So, anybody think 160 is unrealistic? I'll post some pics of the build-up when its done after easter weekend!
04-01-2007, 12:05 PM
#33
50 Watt CAFz'r
Join Date: Jul 2005
Posts: 119
I say cudo's on the enthusiasm. be it a little unrealistic but hoora on trying. It's people like you that keep the industry interesting, and people that slam you all day long for your efforts that are killing the industry. Good luck
04-01-2007, 12:19 PM
#34
50 Watt CAFz'r
Thread Starter
Join Date: Mar 2007
Posts: 51
Why would they all of the suddon introduce a new standard that varies so much from everything else? Sounds like a marketing scam to me. "Everything else is SO far off and ours is the only one that gives true readings...". Maybe theirs is off and everything else (aka: reference/standards) is on.
Where is all this pro-TL stuff originating from? I haven't competed since early 2006 so i'm not exactly in the loop and seem to have missed this revolutionary new way of underestimating everything that everybody here seems to embrace.
Where is all this pro-TL stuff originating from? I haven't competed since early 2006 so i'm not exactly in the loop and seem to have missed this revolutionary new way of underestimating everything that everybody here seems to embrace.
04-01-2007, 02:27 PM
#35
the termlab is more consistent, microphones can be infuences by fequency and velocity(spike the mike).
it's not to deter people, but to make a level playing ground.
everyone measured lower on the TL, but now you don't need to worry about a 1-3 db difference between lanes and calibration after being in an extreme vehicle.
it removes the errors that are often found with other systems using a microphone.
if you hit a 148 in quebec, than you will most likely hit a 148 any place else.
it's not to deter people, but to make a level playing ground.
everyone measured lower on the TL, but now you don't need to worry about a 1-3 db difference between lanes and calibration after being in an extreme vehicle.
it removes the errors that are often found with other systems using a microphone.
if you hit a 148 in quebec, than you will most likely hit a 148 any place else.
04-01-2007, 07:03 PM
#36
Since the introduction of the termlab pressure sensor it has been the un-official standard, no other mic/metering system has come close to the consistency/accuracy of it. This has been out for several years now (I think it was introduced in 2003?), it's nothing new.
Before the termlab sensor, the "standard" so to speak has been going to a 2x/3x certified event when they constantly calibrate the mic through-out the event to try to keep the accuracy.
Before the termlab sensor, the "standard" so to speak has been going to a 2x/3x certified event when they constantly calibrate the mic through-out the event to try to keep the accuracy.
