Help with wattage and ohms please!

[mahosky85 10+ year member]

The only one of those thats on the amp is the low pass filter, which is set to on ( 80Hz)

 

[bubbagumper6 5,000+ posts]

The only one of those thats on the amp is the low pass filter, which is set to on ( 80Hz)

wow, that's interesting...well I guess all you need to do is set your gain properly. Here's a good tutorial: JL Audio - Car Audio Systems

The voltage you'll need is 40V.

voltage = sqrt(power * impedance) = sqrt(400 * 4) = sqrt (1600) = 40

Make sure you put the DMM probes in the same terminals your sub connects to, they need to be bridged (one on each channel).

 

[sacsking916 5,000+ posts]

Take the sub out of the box and check the wiring or take pics.

 

[Fiendstolemyamp 10+ year member]

I'm sure it's wired in series, for a 4 ohm load. Pre-loaded enclosures like that don't come wired to 1 ohm.

 

[sacsking916 5,000+ posts]

I'm sure it's wired parallel, for a 4 ohm load. Pre-loaded enclosures like that don't come wired to 1 ohm.

You mean series?

 

[Fiendstolemyamp 10+ year member]

You mean series?

Yes, thanks, i'll fix my post

 

[LosIsATool 5,000+ posts]

Is it to late to get a refund

$432.26 from Amazon with shipping!

Thats everything you have with a better box

 

[mahosky85 10+ year member]

Alright just read to enclosure paperwork and it says it's either wired for a 2 or 4 ohm load, but where the speaker wire terminals are it says 2 ohm. Just got done setting to 40v

 

[bubbagumper6 5,000+ posts]

Alright just read to enclosure paperwork and it says it's either wired for a 2 or 4 ohm load, but where the speaker wire terminals are it says 2 ohm. Just got done setting to 40v

That's not so good. That 40V is useless now because it's calculated using 4 ohms as your nominal impedance and 400w as your power output (which was your amps rated value at 4 ohms). I'm surprised it even runs at 2 ohm.

 

[mahosky85 10+ year member]

Sooo... now what lol Get a diff amp?

 

[LosIsATool 5,000+ posts]

Take it all back and use your $700 to get better gear.. Everything you bought can be had brand new shipped to you for $430 bucks

 

[bubbagumper6 5,000+ posts]

No, you need to pull that sub out of the box and verify the wiring. If it's truly a dual 2 ohm sub there's no possible way for it to be wired to a 2 ohm load. I'm 90% sure it's already wired to 4 ohm but if you want to be absolutely sure you need to pull it out. You could try to read the final impedance from the terminals on the box but I've had mixed results with that in the past. You could give it a shot though. Put your DMM in resistance mode (the one with the Omega symbol) and put the leads on the terminals on your box. Make sure to disconnect the wires going to your amp. Tell us what it reads.

 

[LosIsATool 5,000+ posts]

You paid $100 for a $30 install kit, $250 for a $150 Sub. The best Dual deck(not saying much) with Ipod hookup was $60

 

[bubbagumper6 5,000+ posts]

You paid $100 for a $30 install kit, $250 for a $150 Sub. The best Dual deck(not saying much) with Ipod hookup was $60

Dude, just stop, we get it, he paid too much. If returning his equipment was an option I'm sure he would have said so by now. Your just rubbing salt in the wound and it's not necessary so GTFO.

 

[LosIsATool 5,000+ posts]

What, you have a problem trying to save somebody $300 bucks and a ton of trouble when he gets tired of the sub par equipment. If he just got the stuff it might be a option for him but he is so stoked to get it hooked up hes not thinking about that right right now! I've been there

 

---------- Post added at 08:42 PM ---------- Previous post was at 08:41 PM ----------

 

I'm sure I'm helping more then you are!

 

---------- Post added at 08:43 PM ---------- Previous post was at 08:42 PM ----------

 

Where here to help not promote the long term fail. So you sir can GTFO