Guys as the title says i need specs for the box. I have tried a lot of software but I'm not able to get the best tuning frequency. The box will be going into my cousins mehran :P. The woofer in question is JBL GT-5 and the amplifier is solid audio F-47. I don't know the best frequency but I guess he likes punchy bass. Waiting for experts reply.
Regards,
Abdullah