The way it looks you should be able to do 156s in your car when you run the dd amps am i correct.

would be nice but who knows. not really going for any specific numbers just yet, just tryin out the subs. but a number like that is a combination of things, not just a matter of more power. i find that after 154.5 or so it becomes really hard to gain more in a typical street class application. There are like only 3 St. class cars in Canada that broke 155 officially, and all 3 were Street C. But there were many more at 154.X and down.

hey Tom i have the answer to your question about more cone vs. less cone when power is kept the same.

double cone area is usually about 2.8 - 3.0 db increase in efficiency so long as power compression is very low.

and by the way allthough I'm a little sceptical about the specs on the 10's and12's I'm seriously considering plunking 4 of the tfone 15's into a honda crv for this summer's spl's. I haven't seen anything that performs as efficiently on paper as the tfone 15 since the old c-v stroker 15.

Really i dont think any sub can be as efficient as a old Stroker. The burnt in specs for a 18" cv stroker was 98db1w1m and the bl was 41. But i really like the TF1 subs and Yuli is getting great results from them.

did another test today.

although the boxes were not the same, TF1's appeared to be 0.9 db louder than Kicker SoloX. This is pair of 10's vs. pair of 10's.

test was done in the same car with the same amp. slightly different boxes. about 2500 watts.

yeah the TF1 subs are amazing, I pulled out my soloXs and dropped in the TF1s and gained 0.7db right away. That was with one amp at 0.35 on the solos and 0.425 on the TF1s...the best part was that the solos don't have as much impedance rise so my amps would shut off when I strapped them, the TF1s have a nicer rise so I ran both of my XX Cyclops amps strapped on the pair of TF1s and they handled it with no problem and did an even better score

more results...

2 10" TF1's on a Z1 @ 0.25 152.7db so far... couldnt turn it up anymore cause the deck skips :o time for a changer

That's 1 amp, 1 battery and 1 Yaris.