Need help figuring out where the knob should be for SSF on a saz 3500d with an enclosure tuned to 32hz..Pictures would be nice too.

Start at the halfway marker and work your way down until it seems like your subs are reaching or going past there excursion limits. Once you get to that point, turn it up a little bit.

Rule of thumb is 4-5 Hz under tuning.

Rule of thumb is 4-5 Hz under tuning.

That's what I keep reading but then some people are saying a tone at 1hz under tuning at full power could cause over excursion and all that nasty stuff? The subs are under powered so I would think it wouldn't matter anyway..

Would it beideal to get a 28hz test tone and setting it that way?

Load your subwoofers, enclosure and power level into an enclosure modeling program and look at the excursion plot...it will give you a rough idea of where your excursion (and excursion troubles) are going to be. Ideally you would want to keep the excursion below Xmax. Generally you're going to be okay for around a half-octave below tuning. Setting it exactly at tuning is a little conservative, probably a little too conservative and with some disadvantages. Keep in mind a SSF is nothing more than a highpass filter. If the manufacturer follows standard crossover terminology, then the frequency the SSF is set to will be the -3db point of the signal. So setting it at your tuning frequency could potentially (and unnecessarily) result in a loss of output within the useable bandwidth.

This is of course all subject to different circumstances.

man i just went thru this shit with my saz1500 cause i've never had a nice enough amp to have ssf until now. download some test tones play a few tones below what ur tuned at. start with ssf bout halfway up crank the test tone to ur normal listenin level and ease the ssf down until u think its gonna hurt ur subs if u go any lower. then turn it back up just a smigden so it sounds safe. it took me forever to figure it out.