04-17-2008, 07:40 AM
Car: VW Golf III (55Hz)
Amp. Helix SPXL 1000 1750@1 ohm
Sub. 1 12" Helix SPXL 1500 @ 1ohm
Maximum box should be about 90X60X40 cm
08-19-2008, 05:21 PM
You could go for more power with this speaker. We did a 143.8 @ 38 Hz in a Ford Focus (MKI, 2 doors), one Helix SPXL 12" with aprox. 3KW, one 0AWG cable and a Optima Yellow Top (55 Ah). Measured with the new TermLab, by dB Drag rules. We are going to try a bigger number in a few weeks, this time around 44-45Hz..
Good luck! This is a good speaker, capable of loud MUSIC. ;)