I want and need to figure out all these electrical measurements

[raptorforme93]

Right now my sub amp is set up ok but it needs to be fine tuned and I need to learn all of the specifics sooner or later so I was hoping for a little help from the masters! First of all I have 2 JL Audio 12w6v2's hooked up to an Atomic 1000.1 (bench tests at 1200w of continuous power). How do I measure how many Ohm's I have? How do I measure where do I set the gain and LPF at? What about the phase setting? Doesnt the phase control the timing of the subs so you can adjust them to match the music? Any help is greatly appreciated! I would like to learn how to tune it myself instead of paying someone else and not learning anything.

 

[blueflamed03]

honestly, best advice is go to a dealer that will help you, and show you live. Anything we can advise on, wecant measure voltage, or current draw on your truck.

 

[raptorforme93]

Alright thanks anyways though! Im sure its not hard when someone shows you but its very hard to learn by myself when just reading off the computer. Thanks!

---------- Post added at 05:57 PM ---------- Previous post was at 05:54 PM ----------

Also if anyone on this forum lives in the Tampa area and knows car stereos, Im more than happy to drive over and pay you for your help if you're willing to help me out. It will probably be easier than finding a shop that will show me. Haha. Thanks

 

[SunlitComet]

Are you talking ohmage of speaker setup in it it's current wiring scheme? You a multi or ohm meter set on ohms your speaker wire end to it just as if it was the amp itself and what the meter sees is what the amp sees when it is hooked up in the same wiring scheme. Is that what you are asking?

Are both subs dual voice coils like these ?
http://mobile.jlaudio.com/products_subs.php?series_id=4

Is your amp this Class D unit? Class-D 1000.1

http://www.atomicspeakers.com/?pg=amp_class_d_1000

If so your amp is capable of 1- ohm load pushing 1000w rms

so you would want this wiring scheme

two 4 ohm dvc speakers = 1 ohm load on this page: http://www.the12volt.com/caraudio/woofer_configurations.asp~Q~2~I~42

This is very dependent on how your amp outputs are built as well I coul not find a specific output picture of the 1000.1. Perhaps you can snap a photo to see if I can match it up somehow. One output or A-B output?


more to come.....

---------- Post added at 06:24 PM ---------- Previous post was at 06:14 PM ----------

Set your sensitivity to to the output voltage that match your head unit output. So if your pioneer has 5v outputs your turn your amp sensitivity adjustment to match.......

---------- Post added at 06:45 PM ---------- Previous post was at 06:24 PM ----------

LPF is set at the what frequency that you you want to be ignored by the amp when it sees any frequency above that. So if you want the amp to push anythings at 200hz or below set it as such. Any thing above 200hz basically is ignored by the amp. if you have sub outputs on your head unit set it at about the a few hertz higher then what your H/U crossover is at for your sub output. If you are using y-cables from your H/U because it may not have a sub output you set it the same way at which frequency you want the sub amp crossed at.....

---------- Post added at 06:58 PM ---------- Previous post was at 06:45 PM ----------

for phase play some music with some tight bass like dance, latin or country and while listening from your listening position set your phase to what ever make the bass seem fuller or louder leaving all other setting otherwise alone which would indicate you phasing of speakers is matched.

Read the part about wiring scheme again I edited something.

Good enough?

 

[raptorforme93]

Yes thats everything I need thank you so much man!! I have a multimeter that I can use to measure the ohms. All I have to do is set it to measure resistance and then connect it to my sub leads? Both of my subs are the dual voice coils and yes that is the amp that I have. The amp has two sets out sub outputs, so both of the subs are wired directly to the amp and not wired together. So I guess thats called A-B output? I can snap a pic if thats confusing.

---------- Post added at 12:31 PM ---------- Previous post was at 12:28 PM ----------

How do I know the output voltage of my headunit? It is this model http://www.pioneerelectronics.com/PUSA/Car/CD-Receivers/DEH-P7200HD and has three sets of outputs on the back. I have a 4 channel RCA cable running to my voice amp and from there I have a short 2 channel RCA running to my sub amp. Should I get another 2 channel RCA cable to run my sub amp directly to the head unit or is my current set up ok??

---------- Post added at 12:34 PM ---------- Previous post was at 12:31 PM ----------

Right now the LPF is set too high but Im not sure how to match it with the head unit since my sub amp is linked to my voice amp. Ill just turn it down for the time being. The phase is definitely do-able though Thank you so much man!!

---------- Post added at 12:46 PM ---------- Previous post was at 12:34 PM ----------

Nevermind It looks like my H/U preouts are 4v so Ill set my amp to match. Which knob controls the sensitivity? They are labeled: Gain, LPF, Phase, And subsonic... But then again my amps are linked together... Do I still set it to match the H/U? To avoid confusion this whole thread is about my sub amp, NOT the voice amp

 

[quietfly]

Gain is the setting that controls your amp sensitivity. however i Second you going to a good shop and having them show you what you want to learn. obviously you'll pay them for it, but the knowledge is well worth it. also using the SUB out of your head unit will allow you to do some other tuning that you can't do now. ( like lowering the level of bass in certain instances)

 

[raptorforme93]

I will probably just go to the shop. I know them pretty well and Im sure they can help me out. But I know what you mean by going straight to the SUB out on the H/U. Thats how I used to have it and I was nice being able to control the subs better without affecting the voice amp. Thank you guys!

 

[SunlitComet]

Run separate channels all from head unit(3 rca sets). No tapping of another amp. Let the H/U do the sound crossover processing. Preouts are 4v. Set with gain/level on All amps to match. Start on page 15 of manual and redo the audio adjustments and match to the gain and filter settings on amps with what adjustments are available.

AS far as speakers wiring goes I looked at the manual for the 500.1 with the same output type so for a 1ohm power output wire each dub like so:

and verify you see at least 2.0 ohms on the single +- pair to the left and then wire that pair from each one to its own output on the amp. Your amp will see it as a 1-ohm total load. If each rewired sub shows less the 2.0 ohm then we'll have to rewire again for this:

when hooked up your amp will see it as a total load of 4-ohms


I think the second route would be safer just so you stay away from the risk of burning out your amp. it should put out about 400w rms continuously and your speakers should be safe too.

 

[blueflamed03]

wiring is easy, but setting the gains to the HU, you really need the vehilce and a DMM. each car varies, there is no general rule of thumb when making adjustments on sound systems.

Wiring to get a final impedance stays the same though.

 

[raptorforme93]

A lot of stuff that sunlitcomet said makes sense but I know the gain can be tricky so Ill probably just see if the shop can help me out. They are real good guys and do some awesome work. I dont want to mess up my amp or subs so I will have them set it up and show me the first time and when I upgrade or something later Ill know how to do it myself. Im hoping to go to the shop on Saturday so Ill let you guys know how that goes!

---------- Post added at 07:33 PM ---------- Previous post was at 06:27 PM ----------

Where can I buy a good set of RCA cable that block out interference? The local shop only sells JL Audio and Stinger but the JL Audio is stupid expensive and their Stinger wires dont block interference.