Need Newbee Help

[bdjacks 10+ year member]

I looked at the stickers on the back of the amp for the firs time and I have some questions, mostly regarding the different numbers regarding wattage. There are some higher numbers in the sticker than what's in the manual and I am wndering if they mean that the amp is stable to 2 ohms bridged or what?

I have the following amplifier;

(Now, these are the specs that I just cut out of the manual.)

Pioneer GM-X962

GM-X962

Power source ... 14.4 V DC (10.8 — 15.1 V allowable)

Grounding system ............................... Negative type

Current consumption .. 25.0 A (at continuous power, 4 Ω)

Average current drawn* ..... 9.6 A (4 Ω for two channels)

17.3 A (4 Ω for one channel)

Fuse ................................................................. 25 A × 2

Dimensions ................... 279 (W) × 61 (H) × 324 (D) mm

[11 (W) × 2-3/8 (H) × 12-3/4 (D) in]

Weight ... 5.0 kg (11.0 lbs) (Leads for wiring not included)

Maximum power output .............. 250 W × 2 / 760 W × 1

Continuous power output ... 125 W × 2 (at 14.4 V, 4 Ω, 20 — 20,000 Hz, 0.08% THD)

380 W × 1 (at 14.4 V, 4 Ω, 20 — 20,000 Hz, 0.8% THD)

190 W × 2 (at 14.4 V, 2 Ω, 20 — 20,000 Hz, 0.8% THD)

Load impedance ........................ 4 Ω (2 — 8 Ω allowable)

(Bridge connection: 4 — 8 Ω allowable)

Frequency response ........ 10 — 50,000 Hz (+0 dB, –1 dB)

Signal-to-noise ratio ................... 100 dB (IHF–A network)

Distortion ...................................... 0.008% (10 W, 1 kHz)

Separation ................................................ 65 dB (1 kHz)

Low pass filter .......................... Cut off frequency: 80 Hz

Cut off slope: –12 dB/oct

Maximum input level/impedance .. RCA: 6.5 V/22 kΩ (0.2 — 6.5 V)

THEN You'll have to go to my Cardomain profile to see the photo of the sticker. (its at the bottom of the page)

Here's the link http://www.cardomain.com/ride/2927954

So, my number one question is, is this amp stable to two ohms and I should re-wire everything from it's current 4 ohm setup ...or... does this just mean that I will get the extra 150 watts if I provide a constant 14.4 v power source and how would I do that? Does the cap take care of that?

Should I get a new amp? I mean is this a must? Am I doing harm to these subs withour one? would a punch 150 be too much power (25 to... series)?

Thanks a lot for your time and help.

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[civictech 10+ year member]

it is saying- only 4 ohm stable when in bridged(mono) mode and can do 2 ohm min in stereo(2ch)

 

[bdjacks 10+ year member]

The confusing part is that there are 2 different 4 ohm mono rms outputs that I see. The 380 figure and the 530 figure that only appears on the sticker on the amp itself.

So what makes the difference here? is it the higher power going to the amp? (14.4 vs the 12) Is that the difference in power output? An extra 150 watts from 2 more volts?

And lets say that the amp is only stable to 4 ohms bridged. What's the real risk in trying to run it at 2? Will it do dammage to the subs or just the amp or neither? Will it start clipping?

And if that 530 figure does represent only 4 ohms with a higher power source then if I ran it stereo and wired the subs at 2 ohms that is normally rated for 190 rms each then woulldn't my higher power source boost the 2 ohm stereo load substantially? Say up to 265 each? Therefore taking away the need to risk it by running it bridged at 2 ohms? Would that end result be the same? And would that risk cliping?