160db, realistic?
03-30-2007, 02:15 PM
#1
50 Watt CAFz'r
Thread Starter
Join Date: Mar 2007
Posts: 51
160db, realistic?
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!
03-30-2007, 02:31 PM
#7
0 Watt CAFz'r
Join Date: Mar 2007
Posts: 40
I'm thinkin 160 is a little high. you're going to have to reinforce the sh*t out of that cabin. my suggestion, pour a 1/2" to 3/4" concrete floor, lexan windows, and roof... MDF? not too mention batteries and alternator. if you've hit 148 though you probly know what you're doing.
that way 160dB can probably be achieved
good luck
that way 160dB can probably be achieved
good luck
03-30-2007, 02:31 PM
#8
Originally Posted by tg989
I saw a guy in a pulsar with two w12gti's on a bpx1100 do 154 so I don't think its impossible.
a huge SUV with 4 w15's on a 3000gti amp does 160ish so a 2 seater with the same power/space should be close no?
a huge SUV with 4 w15's on a 3000gti amp does 160ish so a 2 seater with the same power/space should be close no?
I can pretty much guarantee that neither of those scores were on the dash with a TermLab.
It's just not that easy to break a 150, let alone a 160.
03-30-2007, 02:42 PM
#10
50 Watt CAFz'r
Thread Starter
Join Date: Mar 2007
Posts: 51
Originally Posted by NTOXKTD
I have a meter in Barrie that goes up to 190db.
