HELP! PG zpa 0.5

[DWancha 10+ year member]

Yesterday i bought a PG zpa 0.5 off craigslist. I know the amp isnt bad because it powers on with green lights. i can feel power going through the sub, but it's barely moving, and barely even making sound. I'm using 4awg power wire and using an oem factory integration system.(dont know the brand, shop installed it for me) and after the oem thing, i have a pyle crossover/bass booster/processor. I can turn the sensitivity on the amp all the way up and still nothing. Ive reversed the polarity and done everything i can think of. even triple checked all my connections. The only thing i can think of is the amp isnt getting enough voltage, but then again i dont think that can be the case because my oem adapter thing has sensitivity knobs, so does the pyle processor, and the amp, so i would think that enough voltage could be attained with them up enough. Another thing that comes to mind is im using a 12w7 thats 3 ohms, but this amp is designed to run at 4 or 1 bridged only, but before i bought the amp i took this into consideration and came to the conclusion that with box rise it would be close enough to 4 that it wouldnt matter. If anyone has any suggestions please help. Thanks in advance.

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[dkguitarist 5,000+ posts]

whip out ypur dmm and start measuring your voltage everywhere and check the ohm load of the sub at your speaker wires

 

[thehardknoxlife 10+ year member]

Well I'd say you aren't getting more than 500 watts hooked up at 3 ohms on that amp...Please sell it to me..............

 

[DWancha 10+ year member]

I just found this on the PG manual website and i cant find it on my amp anywhere.

ftp://208.187.38.55/Phoenix_Gold/Manuals/Amplifiers/ZPA/zpa2chan.pdf

Number 8, the grounded/floating switch. can anyone explain what this is, and if its not on my amp doesnt that mean i have to get it serviced?

 

[DWancha 10+ year member]

wanna trade it for your xenon? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[DWancha 10+ year member]

what makes you say i wouldnt be getting more than 500 watts? It has a regulated power supply thats suppose to put out at least 1000 at 4 or 1.

 

[thehardknoxlife 10+ year member]

wanna trade it for your xenon? //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Errrr....which one? Thats very tempting

 

[dkguitarist 5,000+ posts]

taken off the phoenix gold website:

http://www.phoenixgold.com/webfaq/ZPA.htm

Output Power:

4 ohm stereo @ 12/13.8 VDC

150/300 WRMS x 2

2 ohm stereo @ 13.8 VDC

500 WRMS x 2

4 or 1 ohm bridged @ 13.8 VDC

1000 WRMS x 1

Frequency Response

+/-1dB from 20Hz to 20kHz

Signal to Noise Ratio

>100dB

Input Sensitivity

200 millivolts to 2 volts

Input Impedance

>10k ohms

Input Voltage Range

10.5 volts to 15.0 volts

Typical current draw at idle

750 milliamps

Minimum Impedance

1 ohm bridged/.5 ohm stereo

Dimensions, ZPA 0.3

13.9"L x 13"W x 2.1"H

Dimensions, ZPA 0.5

15.9"L x 13"W x 2.1"H

 

[dkguitarist 5,000+ posts]

so either you're choking your amp's power draw, or your sub is wired wrong.

 

[DWancha 10+ year member]

let me see if i can get it to work for me, if i can't i might get rid of it. I think its either something im doing wrong or it just doesnt work with my oem adapter, because it looks hella good for how old it is, and like i said all the lights power on, all green. If no trade how much would you wanna scoop it up for?

 

[thehardknoxlife 10+ year member]

Ah.....I thought it was 1000x1@1ohm bridged. I didn't remember it putting out that power @ 4 ohms bridged.

 

[thehardknoxlife 10+ year member]

let me see if i can get it to work for me, if i can't i might get rid of it. I think its either something im doing wrong or it just doesnt work with my oem adapter, because it looks hella good for how old it is, and like i said all the lights power on, all green. If no trade how much would you wanna scoop it up for?

It's yours whatcha want for it.I'll give you $50 more than what you paid....unless you paid a rediculous amount. Or I have alot to trade.

 

[DWancha 10+ year member]

I know i didnt wire the sub wrong because its svc and it was hooked to another amp before and i didnt even change anything on the sub, just switched the wire from one amp to the other. As far as choking it of power, thats possible, but even if i was choking it of power i think i would hear/feel the sub a little bit and i dont, my rear 6x9s are about 4 times louder. Before i had a rockford p6002 and it was quite loud and hit hard but i could tell i was clipping the amp a lot and the sub could use more power.

 

[DWancha 10+ year member]

any other suggestions?

 

[thehardknoxlife 10+ year member]

Are you sure you have it bridged?