SiluroMx

I installed Helix 10" Subwoofer enclosure that powered by MATCH 2.1 amp along with my current Helix V Eight amp. This enclosure fit very well in the small trunk space.

Worth it? I dont know yet, still experimenting with tuning, I crossed the sub HP 37 hz LP 55 hz. Because I have Helix 8" woofers in the doors and to avoid localization.

The problem with those cars are the road and engine noise, it drops the calrity of the sub , but so far its cleaner than playing two doors woofers only. But the question: is it worth spending around $1000 to play frequency range from 37 to 55 hz ?

and for those whom they have subs in their cars, what are the crossover frequency points in their system that produce the best bass frequency?

Cayman Ed

I set my Erisin ES8559C unit sub frequency to 50 Hz max and my Alpine V amp LPF to 63 Hz powering 2 JL Audio CP106LG-W3V3 ported micro subwoofers, one behind passenger seat and one in the trunk. I played test tones and the JL Audio can go as low as 30 Hz without distortion and losing too much volume.

SiluroMx

Interesting! You havd 2 subs instead of one. I am sure they sound and perform better than one 10" ported sub which I have. I am trying to experiment with different LP, HP, filters, slopes etc. because I haven't owned a sub before...trying to achive decent lows without road and engine noise interference, I dont know if this can be done with my setup or not.

I should try test tune to see how low it can go, its a good idea

What are your front woofer speakers ? and did you set their HP to 50 hz ?

Cayman Ed

still have the stock door woofers coming from basic CDR31 only. I set HP at 80 Hz. The Erisin sounds a lot better than OEM and has equalizer to fine tune your musical liking. Agree that 2 subs in 2 different locations are better than a single sub.
My set up gives me the flexibility to partially use the trunk or fully if needed as I can move the sub behind the driver seat.
I also use a frequency analyzer app to help me tune it.

SiluroMx

Thank you for sharing your setup and experience

Cayman Ed

Typo mistake on HP filter to door woofers. Should be 60 Hz and not 80.

SiluroMx

some people suggest HP 25 hz , I am not sure if that will damage the sub or not.

Cayman Ed

Depending on cone size, design and quality, Subwoofers can handle 25 Hz but not for door woofers that is why I set my high pass to 80Hz (will play 80 Hz and above only) on my door woofers to be safe & lower distortion.