ThomasG
5,000+ posts
CarAudio.com Veteran
I did not write this but i agree with it.
First off, JBL knows theirstuff. James Brown Lansing (JBL) invented the first loudspeaker so the lineage is definately there. The W15GTi is a monster. I currently am running 2 of them in a 8cu ft slot-vented box tuned for 48 hz and running off of a JBL A3000GTi amp.
It hits higher than our meter at the shop can read (160db max DBr on the meter). The entire system is installed in a neon (ya i know, the system is more than the car, yada yada yada) and the front windshield blew out while we were configuring the system for the first time (they weren't even up all the way! they were still in the working-in phase). As it is now, we have to keep the door windows down to keep the spl down a bit in the car when listening to it outside of the spl competition scene. This doesn't prevent the windscreen wipers from bouncing off the windscreen 2" but it does keep the windscreen intact. Aside from sick spl, the sound q is very very clean for a huge sub and its tighter than alot of 12" subs on the market due to the kevlar impregnated paper cone (I listen to alot of trance and drum & bass, so this is extremely important).
I've also seen these subs running off of two seperate amps, which works fine, but the amp runs at 3 ohms (dual 6 ohm voice coils hooked up in paralell) per sub, instead of having them both bridged in paralell individually and then together, which results in 1.5 ohms, giving any 1-ohm stable amplifier (most of the jbl lineup) the ability to put out its maximum RMS without damaging components. The subs can take everything the A3000GTi can push at them (way over the rated 3149wrms @ 1.5 ohms) all day long, provided your box is both tuned to the right frequency and vented properly to keep the air cool inside (tip: arrange your vent or vents so they end near the motor structure to keep airflow directly on it) and allow the massive motor structure on the sub to function properly as a heatsink.
Anyways, if you don't have an amp capable of putting out atleast 800w RMS then don't bother with this sub, you wont be doing it or yourself justice.
Next to his little brother w12GTI
First off, JBL knows theirstuff. James Brown Lansing (JBL) invented the first loudspeaker so the lineage is definately there. The W15GTi is a monster. I currently am running 2 of them in a 8cu ft slot-vented box tuned for 48 hz and running off of a JBL A3000GTi amp.
It hits higher than our meter at the shop can read (160db max DBr on the meter). The entire system is installed in a neon (ya i know, the system is more than the car, yada yada yada) and the front windshield blew out while we were configuring the system for the first time (they weren't even up all the way! they were still in the working-in phase). As it is now, we have to keep the door windows down to keep the spl down a bit in the car when listening to it outside of the spl competition scene. This doesn't prevent the windscreen wipers from bouncing off the windscreen 2" but it does keep the windscreen intact. Aside from sick spl, the sound q is very very clean for a huge sub and its tighter than alot of 12" subs on the market due to the kevlar impregnated paper cone (I listen to alot of trance and drum & bass, so this is extremely important).
I've also seen these subs running off of two seperate amps, which works fine, but the amp runs at 3 ohms (dual 6 ohm voice coils hooked up in paralell) per sub, instead of having them both bridged in paralell individually and then together, which results in 1.5 ohms, giving any 1-ohm stable amplifier (most of the jbl lineup) the ability to put out its maximum RMS without damaging components. The subs can take everything the A3000GTi can push at them (way over the rated 3149wrms @ 1.5 ohms) all day long, provided your box is both tuned to the right frequency and vented properly to keep the air cool inside (tip: arrange your vent or vents so they end near the motor structure to keep airflow directly on it) and allow the massive motor structure on the sub to function properly as a heatsink.
Anyways, if you don't have an amp capable of putting out atleast 800w RMS then don't bother with this sub, you wont be doing it or yourself justice.
Next to his little brother w12GTI
