Originally Posted by Darin
Not really... they need to be adjusted by feel. I used the meter just to see what kind of effect it was having on my sub's output, and which way to wire them to prevent them from cancelling out my sub's response. But you can't really count on a meter to have completely accurate response at such low frequencies, you can't expect a microphone sitting on a vibrating object to be an accurate way to measure those vibrations, and there's really no reference to calibrate it to. Your butt is a much better tool for the job.
hey i just got my bka 300.
UPDATE: found better way to more accurately set the buttkicker.
You need an SPL meter to give you the db values.
unhook your subwoofer first. Now set spl meter to slow c-weight.
You can either lay spl meter on the base plate or on the spot where you will sit.
turn on your receiver's subwoofer test tone.
adjust volume level of the buttkicker amp until spl meter reaches 63 db
(SPL meter on the base plate) or 60db
(on the spot on couch where you will sit). These are my values I got from my receiver's test tone after I calibrated with AVIA's test tones at 70 db.
try my values first and watch movies/music that ususally bottom out the buttkicker.
if the buttkicker still bottoms out, lower the volume level of the buttkicker amp until it doesnt bottom out, turn on the subwoofer test tone, lay the SPL meter on the transducers base plate or on the couch, and take note of the db value. This will be the db value you will use for the buttkicker.
Don't forget to plug back the subwoofer.
On my subwoofer test tone, 60 db is what i use to calibrate the buttkicker. if i set it higher than 60 db it will bottom out, so i set the buttikicker to 60 db everytime i adjust the volume level of my receiver. I'm not sure about test tones on other receivers so you can try 60 db first and then adjust, and take note of the db using the spl meter.