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Review 1 of 50
Price Paid:
$130.00
from EBAY Year / Model Reviewed: 2000 Audiobahn Alum12 Strengths: Extremely Strong Cone
More than honest power rating when vented(1000WRMS)
Makes insane sound at low frequencies with a very small box.
Motor, and assembly is damn tight and well made. Weaknesses: I just wish they offered it in dual 4 and dual 2ohm configurations. Summary: I earlier left a review saying that this sub was a power hungry monster and that it wasn't really all the hard hitting with even it's rated maximum power. I'd have to correct myself.
I've done a lot of experimenting with it, and learned a lot more about box building(vent tuning was easy, but for the longest time I didn't understand nuetralizing air speeds). Since then I've grown to absolutely love this sub. It is still housed in it's original 1.6 cuft. net box but with 31HZ tuning from 10SQ inches of port(11inch of portdepth) on the face of the cube shaped box. Before tuning it peak at an unacceptable 35HZ when sealed but after tuning it was more like 40HZ with a wider extended powerband.
The differences between 1.6sealed and 1.6w/31HZtuning is amazing. Sealed it only started to become "loud" at around 45HZ, and when it finnally peaked at 35HZ it was merely good for a 12. I carried a note down to 25HZ and then signed off and still did "OK". Vented, the sub actually does it justice. It starts getting loud at around 55HZ and becomes amazing right around 45HZ. It sounds equally loud from 45HZ down to almost 30HZ and is the definition of clean bass. It signs off at the same level it used to but I believe even at 20HZ it is louder because of how much louder it was up high and then the volume drops just as much when it starts to sign off. The sub still peaks a bit low but tuning it higher isn't accessible without increasing the airspeed and lowing SPL with my current port setup.
The box is still too large at 1.6cuft. to be vented to only 31HZ. More ideally would be 1.2cuft(I know that seems damn small for a 12 but these subs are insanely space effecient) with about 30HZ tuning to make it peak just shy of 50HZ, and sacrifice the extreme low for a lot of extra SPL in a more usable region that is played in normal day to day music.
The bigger box I have now punches amazingly accurate and would be less accurate in the 1.2cuft. box I plan on building but I expect it to still do excellent.
The sub is mounted right now in a 1991 Nissan 240SX fastback facing the rear in it's 16X16X16 cube just 8 inches from the back wall. It will meter an honest 142-144 on a new termlab meter with 1270WRMS(the amp makes 1270@2ohms and it'd be my best estimate to say the sub is getting at least 1100W when I run it at 3ohm parrallel) at right around 40HZ. The sub will get hot and eventually burn up at this wattage if left WIDEOPEN(meaning non stop signal tones, about 1min of wide open signal makes the sub start to warm up on the rear and starts barely giving off that burning odor) but with my experience it would take a very very bass heavy song and a long period of running to burn up on regular music.
I expect the single sub should reach SPL numbers in excess of 146DB(more like 150dB on the year or more ago meters) with the new box w/ 1270WRMS, I'll try to keep everyone posted. I just purchesed a audiobahn ALUM15X also and will review any differences between these subs in the near future. Similar Products Used: Infinity Perfect 12
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