Where can i get a 40 hz test tone??

 

Silver Member
Username: Holt_champ

Htown, MI

Post Number: 685
Registered: Oct-06
i need to set my gains but i dont know where to get a test tone to do it. thanks
 

Gold Member
Username: Oglejust

Post Number: 1608
Registered: Aug-06
use a 50hz tone.... and i use a tone generator called "nch tone generator" or u could go to realm of excursion and download 1
 

Silver Member
Username: Solo67042

KANSAS

Post Number: 169
Registered: Apr-07
http://www.realmofexcursion.com/

downloads tab
 

Gold Member
Username: The_image_dynamic

San Diego

Post Number: 1266
Registered: Dec-06
http://www.realmofexcursion.com/audio/testtones/40Hz.mp3
 

Gold Member
Username: The_image_dynamic

San Diego

Post Number: 1268
Registered: Dec-06
http://www.realmofexcursion.com/audio/50hz.mp3
 

Gold Member
Username: Matt12490

California USA

Post Number: 2355
Registered: May-05
Does anyone have that tutorial for setting gains? It has full details on using the DMM and test tones.
 

Silver Member
Username: Holt_champ

Htown, MI

Post Number: 686
Registered: Oct-06
how do i download it...it just pops up in my player when i click it?
 

Gold Member
Username: Oglejust

Post Number: 1610
Registered: Aug-06
u right click and hit save as
 

Gold Member
Username: Nd4spd18

Southeast PA

Post Number: 2270
Registered: Jul-06
Tutorial:

http://mobile.jlaudio.com/support_pages.php?page_id=143


Voltage calculator:

http://www.subwoofertools.com/forum/setgain.asp



Test tone, use this one:

http://www.realmofexcursion.com/jmac/audio/0dB_wav_test_tones/50%20Hz.wav

That test tone is 0 db WAV, thats what you want.
 

Gold Member
Username: Oglejust

Post Number: 1611
Registered: Aug-06
matt r u talking about the jl 1?
 

Gold Member
Username: Matt12490

California USA

Post Number: 2360
Registered: May-05
I was talking about the one from the eD forum, but this works. Thanks M.S.
 

Gold Member
Username: Oglejust

Post Number: 1612
Registered: Aug-06
dammit ms ya got to it b4 me lol
 

Silver Member
Username: Holt_champ

Htown, MI

Post Number: 687
Registered: Oct-06
what is slash series amp?? would i have the input on low or high voltage??
 

Silver Member
Username: Holt_champ

Htown, MI

Post Number: 688
Registered: Oct-06
and a little off topic would i hear any differece if i used 1" opposed to 3/4" when i build my box? thanks everyone!
 

Gold Member
Username: Nd4spd18

Southeast PA

Post Number: 2277
Registered: Jul-06
Slash series are JL's amplifiers. Your amp most likely won't have a high/low switch.


We use that tutorial because it explains how to set the gain very well, just ignore the part where JL gives a table of voltages for their amps. Instead use that calculator I posted to find the voltage to use for your amp.
 

Gold Member
Username: Oleg

Santa Monica, CA USA

Post Number: 1344
Registered: Nov-04
Hey M.S., I've got a question for ya...

I was setting my friend's gain today with my DMM. What should the sub out on the HU be set to when doing this? It's a subwoofer amp. Also, my DMM displayed a reading with 1 tens digit with 4 digits after the decimal point. Target voltage was 24.5V (600W into 1ohm) and I was able to adjust it for DMM to show 0.0024 and when the gain was all the way down, the reading was 0.0007. Do these numbers look right and why didn't it just show 24.5V when/if it got there? The measurement was set to AC voltage. Thanks!
 

Silver Member
Username: Holt_champ

Htown, MI

Post Number: 691
Registered: Oct-06
oh ok...does anyone have anything to say about

"and a little off topic would i hear any differece if i used 1" opposed to 3/4" when i build my box?"
 

Gold Member
Username: Nd4spd18

Southeast PA

Post Number: 2278
Registered: Jul-06
What do you mean by "What should the sub out on the HU be set to"? If you mean the sub level, it should be all the way up. Everything else on the HU turned off or at 0.


Is your meter auto-ranging? If not, you had it on the wrong range probably. If it is, something else is wrong......
 

Gold Member
Username: Nd4spd18

Southeast PA

Post Number: 2279
Registered: Jul-06
phillp:

I'm no expert box builder, I probably not. Most people use 3/4 for their boxes.
 

Gold Member
Username: Oleg

Santa Monica, CA USA

Post Number: 1346
Registered: Nov-04
Yeah, I went the sub level. Ok, maybe that's what I did wrong - I set it to "negative infinity" lol Yes, my DMM is auto-ranging, but has manual override if I need it. I'll check again to make sure it's not in override mode. Thanks, M.S....life saver.
 

Silver Member
Username: Holt_champ

Htown, MI

Post Number: 692
Registered: Oct-06
yea i know they use 3/4 but i was wondering if 1" would be better for like flexing and stuff. im not sure but i will prolly end up usin 3/4"
 

Silver Member
Username: Holt_champ

Htown, MI

Post Number: 694
Registered: Oct-06
yea i know they use 3/4 but i was wondering if 1" would be better for like flexing and stuff. im not sure but i will prolly end up usin 3/4"
 

Gold Member
Username: The_image_dynamic

San Diego

Post Number: 1272
Registered: Dec-06
If you can afford 1" go with it. I use 1 1/4" MDF for all of my boxes.
 

Gold Member
Username: Matt12490

California USA

Post Number: 2365
Registered: May-05
What sub/s do you have philip? If they're powerful, you should use 1" if it is available.
Jump to: Home Audio Forum | Home Video Forum | Home Theater Forum | Car Audio Forum