Loudest 12" SPL sub for 1600W RMS

[Timmy13091 10+ year member]

amp is 1.2k at 2 ohms bruh

I highly doubt your seeing that

 

[jrdnhsnbrg 10+ year member]

yea that sub will take more then the 1k easlily. i would get another amp and strap it. After box rise and voltage drop the sub will probly still be fine IMO. As of right now the amp is """rated"""" at 1200 rms @ 2ohm. after rise and voltage drop you probly seeing more like 600 watts RMS, especially since its daily for music so the power is going to flux. so my vote would be getting another amp and strapping it

What do you mean after box rise? And my voltage even at full tilt never gets below 13.4V, the fuse block just to the right of the amp is also a voltmeter. Before I add more amps I wanna get a HO alt and do a full Big 3, currently I just added 2 more runs of 4ga CCA wire to my front battery grounds. 1 to the strut tower, another to the engine block. Upgrading alternator positive is a lot more work than I care to do right now, the wire runs through some ****-near impossible places to get to.

 

[jrdnhsnbrg 10+ year member]

You've got a mid level sub in a ported enclosure. Without a total overhaul your more or less at your limits, switching subs without switching boxes or upping power is going to be a very modest gain at best. If your looking to gain on a meter that could be possible, gain to your ears, doubt it, best case scenario you gain a little bass in one area and lose a similar amount somewhere else, which you may or may not find "louder".

Thank you, this is the type of input I was looking for.

 

[bgowdy 5,000+ posts]

Hdc3 and xfl are pretty much the same woofer

this is true..... from my exp with hdc3's which i run now, they will take WAY more then 1k rms... im working on a build that i will be putting about 3600rms to 1 hdc3 18

 

[bgowdy 5,000+ posts]

What do you mean after box rise? And my voltage even at full tilt never gets below 13.4V, the fuse block just to the right of the amp is also a voltmeter.

the amp is rated at 14.4v so anything below that will reduce the power alittle. Well even though you "wire" to 2 ohms, after there is a load in progress your 2ohm Impendence will go up, in other words "rise" to what ever. so even though you wire to 2ohm you possible could be rising to 4ohms or more will playing

 

[jrdnhsnbrg 10+ year member]

the amp is rated at 14.4v so anything below that will reduce the power alittle. Well even though you "wire" to 2 ohms, after there is a load in progress your 2ohm Impendence will go up, in other words "rise" to what ever. so even though you wire to 2ohm you possible could be rising to 4ohms or more will playing

Just took the speaker wire out of the amp and it read 2.1 ohms. Like I said earlier, it never dips below 13.4 on full tilt. I think you're lowballing the amp a bit.

 

[bgowdy 5,000+ posts]

[quote name='jrdnhsnbrg']Just took the speaker wire out of the amp and it read 2.1 ohms. Like I said earlier, it never dips below 13.4 on full tilt. I think you're lowballing the amp a bit.[/QUOTE]

no im not trying to low ball the amp. im being serious. read up on what IMP rise is and you will understand where im coming from, the only way to find out what your rise is, is to clamp the amps power output. no matter what everyone has IMP rise, and can only be tested while the subs are hitting with a clamp meter.

@Timmy13091; help me out here with explaining IMP rise

 

[Timmy13091 10+ year member]

Just took the speaker wire out of the amp and it read 2.1 ohms. Like I said earlier, it never dips below 13.4 on full tilt. I think you're lowballing the amp a bit.

That's not playing .. Subs playing music is a whole diff story ... I suggest you read up there's some good threads on here

 

[DRS0105]

Do some reading. That 2 ohms is NOMINAL. The impedance will change with the different frequencies.

 

[Timmy13091 10+ year member]

[quote name='bgowdy31']no im not trying to low ball the amp. im being serious. read up on what IMP rise is and you will understand where im coming from, the only way to find out what your rise is, is to clamp the amps power output. no matter what everyone has IMP rise, and can only be tested while the subs are hitting with a clamp meter.

@Timmy13091; help me out here with explaining IMP rise[/QUOTE]

So so much to get into .. I'm not even 100 percent on how it all exactly works ... It gets complicated .. But it's there and in a daily setup wiring a tad lower is the best way around it .. Or a amp with some headroom .. Also enclosure plays a big part

 

[bgowdy 5,000+ posts]

Do some reading. That 2 ohms is NOMINAL. The impedance will change with the different frequencies.

i guess i could have said this instead of trying to really explain it lol

 

[jrdnhsnbrg 10+ year member]

Now I gotta try and figure out how that works. It's gonna bother me if I don't... What do you estimate I would get for wattage if I switched to a dual 2 ohm sub? The amp is 1600W RMS@1 ohm.

 

[Timmy13091 10+ year member]

Hdc3 and xfl are pretty much the same woofer

Now I gotta try and figure out how that works. It's gonna bother me if I don't... What do you estimate I would get for wattage if I switched to a dual 2 ohm sub? The amp is 1600W RMS@1 ohm.

Prolly between 1000/1200 clean after rise and voltage drop

 

[bgowdy 5,000+ posts]

Now I gotta try and figure out how that works. It's gonna bother me if I don't... What do you estimate I would get for wattage if I switched to a dual 2 ohm sub? The amp is 1600W RMS@1 ohm.

i would estimate probly about 800-1000 @ 1ohm, because when you lower the impendence on an the efficiency goes down. Also on "SOME" notes/hz lvls not all, yes you might actually touch the 1600 watt rating but not all but i think it would average out to be around 800-1000

 

---------- Post added at 11:17 PM ---------- Previous post was at 11:16 PM ----------

 

Prolly between 1000/1200 clean after rise and voltage drop

hm, we were thinking about the same, i said 800 - 1000 on average

 

[jrdnhsnbrg 10+ year member]

Alright, thanks for the help guys! I appreciate it. This is an awesome forum.