did you want to know about SPL or SQ? ...

 

both are similar as they both have categories for sound quality and both have sound pressure. but both have different ways to clasify competitors and different ways to measure your vehicle. depending where you are in Canada . you might not have one or the other available to you.There are certain provinces that are more towards one sanction than another. considering that you are in ontario...you might only have iasca there and db drags. but westec would be able to inform you of what uasci there might be ONT. Moe would be able to help you with iasca.


which one is better.....that is question best left for the gods.

here is a link for you to research.

www.soundoff.org for usaci and
www.iasca.com for iasca and just in casue you needed it
www.termlab.com for db drags.

you tell us which one you like better.