| Author |
Thread: Just more questions...... |
    
Bronze Member Username: Schinner
Post Number: 37
Registered: May-07
|
| Posted on Friday, May 18, 2007 - 07:20 pm: |
|
so what voltage am i looking for when setting the gain the dmm way???
amp = 750 rms 1 channel
subs take 300 rms each |
|
|
|
Platinum Member Username: James1115
Use a simple...
Post Number: 10095
Registered: Dec-04
|
| Posted on Friday, May 18, 2007 - 07:52 pm: |
|
it depends on what your headunits rms voltage is. |
Bronze Member Username: Schinner
Post Number: 40
Registered: May-07
|
| Posted on Friday, May 18, 2007 - 07:54 pm: |
|
hu = 17 rms
why does that matter for the amp gain? |
Silver Member Username: Imalik
SD2.5......ED9.1=Boom,
New Jersey
Audioque...N...
Post Number: 322
Registered: May-06
|
| Posted on Friday, May 18, 2007 - 08:05 pm: |
|
This should help you
http://www.subwoofertools.com/forum/setgain.asp |
Platinum Member Username: James1115
Use a simple...
Post Number: 10097
Registered: Dec-04
|
| Posted on Friday, May 18, 2007 - 08:10 pm: |
|
you are not looking at your headunits power output you need to know your headunits rca voltage output. what kind of HU do you have? |
Bronze Member Username: Schinner
Post Number: 41
Registered: May-07
|
| Posted on Friday, May 18, 2007 - 08:49 pm: |
|
o....sry i dont know the rca power output....old jvc hu, can i measure the output with a dmm?
and with the subwoofertools it says 34.6 or so volts.....if i set it at that i get clipping so idk what to set it to |
Platinum Member Username: James1115
Use a simple...
Post Number: 10100
Registered: Dec-04
|
| Posted on Friday, May 18, 2007 - 09:03 pm: |
|
a old jvc is prob 2 volt rms output what model jvc is it? |
Bronze Member Username: Schinner
Post Number: 43
Registered: May-07
|
| Posted on Friday, May 18, 2007 - 09:08 pm: |
|
per manual....for hu
line-out/level output: 2.0volt/2kohm load (full scale)
is that what you were looking for? |
Bronze Member Username: Schinner
Post Number: 45
Registered: May-07
|
| Posted on Friday, May 18, 2007 - 09:10 pm: |
|
shoot i could go get model number if that will help....just let me know |
Gold Member Username: Nd4spd18
Southeast PA
Post Number: 2528
Registered: Jul-06
|
| Posted on Friday, May 18, 2007 - 10:13 pm: |
|
WTF are you people talking about. You do not need to know anything about the HU preout voltage.
Kyle:
http://www.subwoofertools.com/forum/setgain.asp
http://mobile.jlaudio.com/support_pages.php?page_id=143
Use those links to set your gain. All you need to know is the RMS power rating of your amplifier at the impedance (ohms) that you are running it. |
Bronze Member Username: Schinner
Post Number: 46
Registered: May-07
|
| Posted on Saturday, May 19, 2007 - 01:44 am: |
|
okay...but the subs arent rated to handle all of that power so should i use the rms power rating of the subs....300 x 2 = 600watts rms?? |
Gold Member Username: Nd4spd18
Southeast PA
Post Number: 2542
Registered: Jul-06
|
| Posted on Saturday, May 19, 2007 - 06:00 pm: |
|
Yes, in that case you would use the power handling of the subs |
Silver Member Username: Jkidder
Spring hill,
Florida
Usa
Post Number: 612
Registered: Nov-05
|
| Posted on Saturday, May 19, 2007 - 08:36 pm: |
|
exactly^ i was wondering wat the hu preamp voltage had to do w/ gain???? |
Gold Member Username: Th3pwn3r
Post Number:...
Post Number: 2706
Registered: Jul-06
|
| Posted on Saturday, May 19, 2007 - 11:52 pm: |
|
"exactly^ i was wondering wat the hu preamp voltage had to do w/ gain????"
It has a lot but things posted in this thread didn't make sense. |
New member Username: Brado6
Post Number: 2
Registered: May-07
|
| Posted on Monday, May 21, 2007 - 07:01 am: |
|
atm i run 1 subwoofer in my car. with one amp. i want to run 2 subwoofers now that are both 1300 watts each instead of having 2 amps is there one amp that will power them both n how much are they n where they from ? as i cba wireing up 2 amps as ive been told that its hard work. and halfords wont do it for me |
Gold Member Username: Juliob
Santo Domingo
Dominican Re...
Post Number: 4629
Registered: Dec-05
|
| Posted on Monday, May 21, 2007 - 01:53 pm: |
|
"1300 watts each" RMS or PEak. Peak isn't useful at all. Post your budget, your subs, DVC of the subs |
