SPL Metre Question
I think you might still be bumped to extreme, because it says that you can't have any mods done in front of the B-pillars.
But I bet if you are just a local competitor and it's not a 2X or 3X show your judge might not care, and let it slide.
But I bet if you are just a local competitor and it's not a 2X or 3X show your judge might not care, and let it slide.
to answer the original question... having a pair of subs in the trunk and a 3rd in a centre console ...generally would cause you to hit lower SPL #'s unless properly phase alligned with the subs in the trunk or vise versa as to allow the sound waves to arrive at the measurement device at the same time...common practice when competing is to make sure all other speakers in the vehicle are shut off to help prevent sound waves to be reproduced from different areas of the vehicle other than from the subs to reduce "out of phase" wave cancellation
Originally posted by Aaronski Bored-manovich:
As well...If I read the rule book correctly(feel free to correst me if I am mistaken),that any mods to the OE centre console will be an automatic bump into Extreme....I know someone who was going to build a custom centre console for a SS vehicle, but nixed it when we showed him the rule book.
As well...If I read the rule book correctly(feel free to correst me if I am mistaken),that any mods to the OE centre console will be an automatic bump into Extreme....I know someone who was going to build a custom centre console for a SS vehicle, but nixed it when we showed him the rule book.
You are allowed to add any commercially available center console for the street class.
Rule 6-7g: Commercially available center consoles are acceptable provided they displace less than 2 cubic feet of air. “Custom” or homemade center consoles are prohibited.
6-9c: Center consoles that displace less than 2 cubic feet of air space are acceptable. (Both commercially available and custom or homemade consoles are acceptable.)
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4000 Watt CAFz'r
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Originally posted by MTA:
to answer the original question... having a pair of subs in the trunk and a 3rd in a centre console ...generally would cause you to hit lower SPL #'s unless properly phase alligned with the subs in the trunk or vise versa as to allow the sound waves to arrive at the measurement device at the same time...common practice when competing is to make sure all other speakers in the vehicle are shut off to help prevent sound waves to be reproduced from different areas of the vehicle other than from the subs to reduce "out of phase" wave cancellation
to answer the original question... having a pair of subs in the trunk and a 3rd in a centre console ...generally would cause you to hit lower SPL #'s unless properly phase alligned with the subs in the trunk or vise versa as to allow the sound waves to arrive at the measurement device at the same time...common practice when competing is to make sure all other speakers in the vehicle are shut off to help prevent sound waves to be reproduced from different areas of the vehicle other than from the subs to reduce "out of phase" wave cancellation
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