JBL BP1200.1 for two Sundown SA-12's

[essque]

Whats up, I picked up a pristine JBL BP1200.1 last summer and I'm about to put it good use on two SA-12's. I understand that the amp is 1 ohm stable but I also read that it puts out the same power at 2 ohms as it does at 1 ohm (which I find somewhat bewildering). I was wondering if someone wiser than myself could tell me if I should get the dual 4 ohm SA-12's and run them at 1 ohm or get the dual 2 ohm subs and run it at 2 ohm's? In other words, wouldn't it put less strain on the amp at 2 ohms instead of 1? Or does it not make much of a difference? Any thoughts would be appreciated and if it sounds like I don't know what I'm talking about, it's probably because I don't.

[dolarbilz]

I'm not to familiar with that amp.i always thought they were 2ohm stable.if same power at 1,2 ohm I would go 1ohm for reason if that amps breaks and i need a replacement its easier to find 1ohm stable amps.but at 2ohm you'll probably be more efficient.you should stick with 2ohms.

[essque]

ahh yes, that is a good point if the amp dies. the dilemma is will i make it die a fast death running the hell out of it at 1 ohm lol

[essque]

Test Performed @ Laboratory Measurements by Ken C. Polhmann Senior Technician, Hammer Labs

14.4 Volt Power:
(max output w/ 1% THD)
841.1 Watts x 1 @ 4 ohms
1,378.1 Watts X 1 @ 2 ohms

12- Volt Power:
(max output w/ 1% THD)
683.8 watts x 1 @ 4ohms
1,039.7 Watts x 1 @ 2ohms

Input Sensitivity:
(for 1 watt output): 19 to 290mv

THD Plus Noise (at 1 watt) 0.2%

S/N ratio:
At max gain, 72.8 db
At min gain, 76.8 db

Freq. Resp.:
@ 20Hz, -0.37 db
@ 300 Hz, -3.65 db

[dolarbilz]

ahh yes, that is a good point if the amp dies. the dilemma is will i make it die a fast death running the hell out of it at 1 ohm lol

Going say this I have ran two different brand 2ohm stable amps at 1ohm they did get hot faster and protect.after a year and half one smoked.really don't think that jbl is a true 1ohm amp.

Get the dual 2ohm for whatever reason if need replace the amp you can always a buy a bigger 1ohm amp like a 2000 watt amp and run at 2ohm to archive the power you need.

[Terra Rysing]

That amp is from the late 90's. Two ohms is what I would run it at.

[SMF93]

Test Performed @ Laboratory Measurements by Ken C. Polhmann Senior Technician, Hammer Labs

14.4 Volt Power:

(max output w/ 1% THD)

841.1 Watts x 1 @ 4 ohms

1,378.1 Watts X 1 @ 2 ohms

12- Volt Power:

(max output w/ 1% THD)

683.8 watts x 1 @ 4ohms

1,039.7 Watts x 1 @ 2ohms

Input Sensitivity:

(for 1 watt output): 19 to 290mv

THD Plus Noise (at 1 watt) 0.2%

S/N ratio:

At max gain, 72.8 db

At min gain, 76.8 db

Freq. Resp.:

@ 20Hz, -0.37 db

@ 300 Hz, -3.65 db

If these are the specs on the amp it isn't 1 ohm stable it 2 ohms stable.

[essque]

Oh it's definitely 1 ohm stable, it's just a mystery whether or not how stable it actually is at that load lol

http://www.manualslib.com/manual/79391/Jbl-Bp1200-1.html

I appreciate the advice thought, its better to be safe than sorry especially with the age of this type of equipment

[essque]

Hooked it up and it was working well for about an hour until the fuses blew. It takes three 40A fuses. Going to put some fresh one's in and see how it does.