I'm running a JL 300/4 to four Infinity Perfect 6.1 components and a JL 500/1 to a Infinity Perfect 10.1d. I have somewhere between little and no idea what to turn all the little ***** to to make it sound good. Here are links to what I'm using to give specs or whatever. Any help is greatly appreciated!!!

Infinity Sub
Infinity Components
http://www.jlaudio.com/amps/5001.html
http://www.jlaudio.com/amps/3004.html

 

Nice choice of speakers I nearly went with those exact same amps too.

Also be aware that many of the headends will do active crossovers for you. Most will have the ability to drive your subwoofer amplifier and block (HPF) your components so that they don't suffer trying to reproduce the bass.

Assuming that your headend only has three sets of outputs you would send the front and rears to your four channel amplifer. I would try a 12 dB slope filter and set the filter to HP (high pass) and the filter frequency to 85-90 Hz. This is one area that you can "play" with - I like the sound of a nice gentle 12 dB slope, others will want the 24 dB - I think the Kappa 6.1's have a bunch of bass to them and the kinder 12 dB slope will introduce less issues.

The 2-channel/4-channel switch goes to 4-channel.

On your 500 watt mono amp I would use the Infrasonic filter and set the frequency to 25-27 Hz - you didn't mention the Qas of your subwoofer/box but that's a pretty safe area to start at - this guy will protect your woofers and save power for where you can hear the sound better. Play with this guy to raise it as high as you can without impacting the music.

I would start with the bass EQ set to flat and tweak it only after about 40-50 hours of music though your woofers as they tend to need a bit of "break in" before they settle into their sound.

The low pass filter is going to be the same as your high pass filter of your four channel amplifier. Again I would set it at 90-95 Hz and play with it up or down a bit. Again I like the 12 dB per octave slope vice the harsher 24 dB one.

If you got the Infinity 10.1dVQ let me know as you can do major tweaks to the box/subwoofer interface/sound with those little Q inserts. Those are the guys I went with BTW.

Setting the high pass and low pass filters is a requirement - matching the crossover point (in Hz), and the slopes (in dB) is pretty much standard but where that crossover point is is your choice - your ears, your music, your box, your listening level - your choice.

If the woofer sounds too harsh - too loud - you can tweak its response with the built-in parametric equalizer of the 500/1. The Q sets how wide the bass is that you're changing, the center frequency chooses which area you're changing, and of course the gain chooses how much you're going to boost the signal. Be really careful as this thing can boost the signal 15 dB (3 dB is a doubling of the power) which can really distort the sound, run the amplifier into clipping (dead to speakers), and over drive your subwoofer while probably blowing your ear drums along the way.

 

Wow, thanks for the writeup... I don't know what Qas is, but my box is about .65ft3 3/4" mdf... and I'm using the regular 10.1d sub I've had for about a year now, not the 10.1dvq...

I can't wait to get my new RCAs in to see how everything will sound together

 

Sounds close to the Zenclosures "e-bay" box which I calculated out to be 0.75 cu.ft. which is going to make that Kappa 10.1d sound really good with a Qas of about .75 (perfect would be .707!) and a -3 dB lower frequency of 51 Hz. You're going to have better/flatter response than 95% of the subwoofer boxes out there.