just curious what those stand for and what changing them do. i havea pioneer 50x4 deck with sub preouts (and im using them)

also perhaps the SLA

 

HPF = High pass filter (Sets the maximum frequency in which the speakers/sub produce)
LPF = Low pass filter (Sets the minimum frequency in which the speakers/sub produce)

HPF is generally used for subwoofers to cut out the higher frequency in the signal, normally set to no higher than 80 hertz

LPF is generally used for tweeters to cut out the lower frequency that would cause them to overextend and get damaged, normally set no lower than something like 8 khz (8,000 hertz)

 

good explanation...except it's backwards. HPF is used for midbass, midrange and tweeters and LPF is used for subs.

SLA - Source Level Adjustment:
Allows you to adjust the volumes coming from different sources. For example, AM radio may be softer than FM radio, so the SLA of AM can be turned up to prevent any huge change in sound levels when switching between sources. All radio is normally louder than music, so to prevent being blasted by the radio when you turn it on, it's SLA can be turned down. SLA for each source can vary from (+4) to (-4). I have also found that SLA can make a difference when subs are hooked up. If you have extremely loud subs that swamp out all of your highs, you can turn the SLA on the CD source up to make up for it. What it does is it raises the volume of the speakers without turning up the level of bass from the subwoofers.

 

thanks guys.

so i guess this means i want my sub amp to be set to LPF to filter out the high end......

(if read everytyhing correctly)

 

Yep, set the sub amp to LPF. The frequency you set it at is where it will cut out the highs. Just remember that it's a slope so it won't cut out at exactly that frequency. Depending on your amp it could let a lot more highs through or cut them out fairly rapidly.

 

i have an amp with a bass boost type switch and then a bunch of other knobs for tuning it. i think i have them all right. what do you recommend me setting the frequency for optimum performance? I am running 300 watt RMS 10" infinties (2) in an open box. They are model 1030w peak. The amp is a 600x4 with a cross to make it either x2 or x3 (suprisingly.....) its a jensen. thanks

 

for the crossover point setting, you'll most likely want to be in the 90Hz to 100Hz range, based on what your ears tell you. as far as the other knobs (bass boost etc.) base that completely on your preference. for the gain, match that to your head unit's output voltage. if you don't know your hu's output voltage: first, turn the gain down on the sub amp. next, turn the volume up to the max comfort level for your front stage/rear fill...by that i mean, don't crank it as loud as it will possibly go...you are just introducing distortion at that point. now, gradually turn up the sub amp's gain until either it blends well with the front stage or (if you are just wanting max performance out of your 10s) until the 10s sound like they are on the verge of over-excursion...then back off the gain just a bit. **just a side note...if you adjust the gain to max out the subs' performance, then decide to use the bass boost, you may need to readjust the gain so your subs aren't hating life.

good luck w/ everything

 

thanks dude