[Ken Matsudaira]

Hi.
I am a new user from Japan.
I need some information about car audio and home audio.
Thanks.

[Ken Matsudaira]

I am a car audio user and want to learn about audio knowledge from home audio.
I bought a new car (BMW i3) and it is very silent car.
So I start car audio DIY by myself.
I came here to learn about audio knowledge.
Thank you.

[FullRangeMan]

Hi.
I am a new user from Japan.
I need some information about car audio and home audio.
Thanks.

Welcome to AC 
What info do you need?
Some Circles of interest:
The Fullrange Driver Circle:
https://www.audiocircle.com/index.php?board=128.0
The Open Baffle Circle:
https://www.audiocircle.com/index.php?board=90.0
The Tube Amps Circle>
https://www.audiocircle.com/index.php?board=144.0

DIY project from a member Eminence Alpha15A + 4.7mH + Visaton B200:

Decware OB with the Lii Audio F15 driver:

If one have a woodworker is possible try the Lii Audio F15($399/Pair) 97dB/8Ω and benign impedance curve suited to OB or Bass Reflex box or the F18($540/pair), no Crossover, no Tweeter beaming, no Phase rotation, no driver sensitivity loss, no Harmonics loss, no Retail price.
http://www.glowinthedarkaudio.com/lii-audio-f18.html