help please pg xenon 1200.1 and 2 12" pg rsdc

Post by **AVICJR** » Sat Mar 20, 2010 12:47 pm

Are you playing the 50 or 60 Hz test tone/sine wave?

http://phoenixphorum.com/gain-setting-w ... vt280.html

gbody805 · Post by **gbody805** » Sat Mar 20, 2010 1:25 pm

Do you have the owners manual.
Gives you all the filter setting values.
http://download.phoenixphorum.com/Manua ... manual.pdf

Just in case you don't.

waynehead · Post by **waynehead** » Sun Mar 21, 2010 8:21 am

yeah check out that manual and it will tell you how many clicks it takes to get the values you want out of your subsonic and crossover. Dude for real right now I have this amp in my "Lester the Molester" van on a single 12 and it freaks people out. I have no reason to believe that your 2 12's aren't as loud as my single 12. Something must be out of wack here. My shit damn near hits the brown note if you know what im saying.

freshskater · Post by **freshskater** » Sun Mar 21, 2010 2:27 pm

yeah i dont have the manual for the amp, and i was using a 50hz sine wave @ 0db. i think it was at 0db anyway.

and thanks for the patience guys. Im really trying to read and figure this stuff out. please be patient

freshskater · Post by **freshskater** » Sun Mar 21, 2010 3:40 pm

ok so i figured it out. u have to have the subs disconnected to read the voltage. the highest 4/4 read something like 134 and the level i set mine at was 74. i assume my amp puts out around 1400 rms. i hear thats not irregular for the xenons.

i put the LPF at 80
and the sub at 20

still doesnt seem all that awesome. yes its loud, but it doesnt seem as hard as my sonys hit.

I have a ford focus SVT hatch with the subs facing forward. no rear seat.

Post by **Bfowler** » Sun Mar 21, 2010 3:53 pm

keep in mind that sonys are made to sound loud. the 60zhz region is what our ears perceive as louder, so they center their output around that.

rsdc's actually get louder as they approach 20hz, further more, it takes twice as much energy to produce a tone 1 octave lower.

so a 30hz tone takes twice as much energy as a 60hz tone.

also your ears perceive distortion as "loudness"

if you still dont think the rsdc's are louder then the sonys, try turning up the sub sonic filter.

even if you set it at 20hz, thats only a 24db per octave slope, which means at 10hz, its only 24db attenuated.

try turning your SS filter to about 35

freshskater · Post by **freshskater** » Sun Mar 21, 2010 3:57 pm

what should i have my sub pass on the headunit to?

i can choose from 50 60 70 80 90 100...etc

i would think I need to have it at 50, and then just use the amp to control it? maybe ill go buy a couple bags of polyfill and see if it helps. i dont know if its a pre-fab or if somebody built it. its a good solid vent ported box tho.

Post by **Bfowler** » Sun Mar 21, 2010 4:49 pm

whats the db per octave on your headunit? a octave is 1/2 below or twice as high as the the number

so if you have a 18db per octave crossover on your headunit and you set it at 50, then it will attenuate the signal 18db at a gradual slope by 100hz. thats pretty low. you might try 70 and and work down if you need

Post by **ttocs** » Sun Mar 21, 2010 4:58 pm

wow...

freshskater · Post by **freshskater** » Sun Mar 21, 2010 5:51 pm

whats the "wow" for? Dont be an elitist. what are forums for? to ask questions and discuss things. If you don't like what I'm posting or what you're reading, I suggest you click that red x at the top right. there is no need for being rude.

and to the people that have been helping me, I thank. sorry for not being as experienced as some of you elites, but atleast im open to learning.and im not sure where to find what db/ the crossover is on the deck. cant seem to find kenwood excelon x493 specs that cover that

this is all i could find on my deck
Front and Rear High-Pass Filter
The KDC-X493 features an independent High-Pass Crossover for the front and rear channels when your front and rear speakers are connected by the unit's speaker-outputs or preamp-outputs. You can adjust the high-pass crossover from "Through", 40, 60, 80, 100, 120, 150, or 180, 220Hz. The "Through" selection is a full-range setting. This feature is very helpful when you have smaller-type speakers in the front and larger-type speakers installed in the rear of the vehicle.

Low-Pass Filter
The receiver features a built-in Low Pass Filter control for the unit's subwoofer preamp output. You can select from 50, 60, 80, 100,120Hz or "Through". The "Through" setting allows your external amplifier's crossover network to do all the filtering for your subwoofer.

thats why i was asking if i should set the sub pass to through, and let the amp take care of it

Post by **AVICJR** » Sun Mar 21, 2010 6:40 pm

No worries freshskater..........ask as many questions as you need until you get your system to your liking. This isn't an "elitist" forum and someone will always answer your questions no matter how simple or even complicated it may be.

Post by **Bfowler** » Sun Mar 21, 2010 8:09 pm

the 493 is a pretty all around capable deck. dont worry about the hp crossovers for now, those ar eyour interior speakers.

the lp is what we are worrying about now. the manual doesnt say but im pretty sure the kenwood has 18db crossovers. (the older excelons did)

thats a good slope (other slopes are 24 and 12 which are steeper and shallower respectively)

since it sounds like you like your bass loud, i would set the lp as high as 80hz or so. the sub naturally has a roll off (which is like a crossover but a natural one the sub just "has" as part of its design.

let us know how your doing on the box and we should be able to get you sqaured away.

i honesty bet they are as loud as your sonys. they just sound cleaner so it doesnt seem like it. do you have the sonys still? play something around 35hz and see which sounds better.

oldskoolmseriesfan · Post by **oldskoolmseriesfan** » Sun Mar 21, 2010 8:30 pm

Im also reading that you have the subs facing forward aswell, make better use of your hatch glass and face the subs either back towards the back of the hatch, or face them firing straight up against the glass and you should get 3-6 decibels louder.

waynehead · Post by **waynehead** » Sun Mar 21, 2010 10:09 pm

Yeah bro, definitely want your speakers facing back or firing into the hatch. Both will yield more cabin gain. I dont know if this has been touched yet, but what size is the box you are running. The box I am currently using is quite a bit bigger than recommended and it greatly effects my frequency response. I have a hard rolloff above about 45 Hz and by 80 it is pretty much gone. I cross mine over at 65 anyways so it works for me. If you are wanting maximum spl try a smaller box tuned alittle high or maybe try a ported box tuned for spl. From what I hear the rsdc's are decently flat and favor the low end so get someone on here to do some math for you and build a box that is going to give you the most increase. Im not sure what your musical tastes because that can kinda give us a better idea of what your main goal is. it seems to be mostly spl. A bandpass box can give you great gains but im not sure the rsdc would excel in one. Im pretty anal about sound quality so they arent for me because they have a very peaky response. But with either a port or bandpass enclosure you could raise your subsonic to right below the tuned frequency and free up all that power the low notes are robbing from your.

waynehead · Post by **waynehead** » Sun Mar 21, 2010 10:16 pm

I meen, if you really arent happy with your subs ill trade you my Idmax 12 for them.

ive been wanting to hear a pair of them.

Post by **ttocs** » Mon Mar 22, 2010 6:26 am

the wow comment was more for the phorum then for you. I feel they throw that tutorial at anyone that comes on here asking about gains with out first finding out if the person and equipment used is up to the task. This was a perfect example where they either needed ask some more questions to figure out if you were ready to do this yet or should have been more clear in what they instructed. You didn't do anything wrong you just asked for help and followed their instructions to the best of your ability.... hopefully no other damage was done to any equipment but if it was I would not blame you.

let the flaming begin.....

oldskoolmseriesfan · Post by **oldskoolmseriesfan** » Mon Mar 22, 2010 6:29 am

ttocs wrote:the wow comment was more for the phorum then for you. I feel they throw that tutorial at anyone that comes on here asking about gains with out first finding out if the person and equipment used is up to the task. This was a perfect example where they either needed ask some more questions to figure out if you were ready to do this yet or should have been more clear in what they instructed. You didn't do anything wrong you just asked for help and followed their instructions to the best of your ability.... hopefully no other damage was done to any equipment but if it was I would not blame you.

let the flaming begin.....

go back to floor sweeping ya hack

Post by **ttocs** » Mon Mar 22, 2010 6:31 am

can do!

I will go polish my ears

waynehead · Post by **waynehead** » Mon Mar 22, 2010 8:04 am

heres a tutorial for ya.
http://coachtran.wordpress.com/2009/01/ ... asy-steps/

waynehead · Post by **waynehead** » Mon Mar 22, 2010 8:04 am

jk by the way. Sorry for the hijack. Let us know how things are coming. And if you dont mind gimme some input on what kinda music ya dig.