Question about Pyle PLMRA420 Car Audio Amplifier

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Power light comes on my amp but no sound comes out

Hi, i have a Pheonix Gas 250 watt amp that was given to me with 2 12" Rockford Forgate Punches. I live in New Orleans and had the subs in my house and they got flooded and partially disenagrated. But the amp did not get flooded. When it was given to me the gentleman said that he had it all hooked up in his car and never had a problem until he let his brother use the car and when he got it back the thermal overload light was on so he disconected everything. Then he gave it to me. I hooked the amp up in my car and to some 6x9 speakers just to test if it worked and the green power light came on but no sound. I'm pretty mechanically inclined, but not totally electronics master when it comes to diodes and all that...I took the cover of and looked at the fuse and it was fine. Any suggestions????

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Re: Power light comes on my amp but no sound comes out

If the amp overheated, u could have transistors or other parts damaged that may look fine to the naked eye.

Posted on Jul 18, 2008

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Hi,I have two 250w speakers at 8ohms ,could someone tell me if I need to get a amp with higher watts than the speakers?k

Speakers are rated either at RMS (root mean square) average power or Peak Power. An RMS of about 125 watt is equivalent to 250 watt peak. To match the radio and speakers they both need to be consistent. Also do not be confused with total radio power out vs per channel.

So if the speakers are 250 watt peak power then a radio with 125 watt per channel or 250 watt peak per channel would be a good match.
If the speakers are RMS 250 watt then the radio would be 250 RMS/channel and usually with a four channel radio a total of 1000W RMS
With that much power the neighbors should hear you coming!

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Change the gain and the frequency settings

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This amp is rated at 500 watts into a 4 ohm load bridged mono or 250 watts x 2 into 2 ohm load stereo. Do not go below that impedance in either case. The amp was meant to dissipate a certain amount of power, driving it to hard will lead to damage. Your speakers look like they are dual voice coils @ 4 ohms each. To get the max power while still saving your subs would be to parallel the voice coils on each woofer then run them in stereo with your amp. Stereo 2 ohm is 250 watts per speaker.

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Amp makes noise. I am purchaseing a new amp

Hello termite440,

A mono amp will generally provide more power for subs. And for those Audiobahn's, you'll want something that will provide a minimum of 500-600 watts RMS to each, a least a 1000 watt amp. At the low end, something like the Alpine MRP-M1000 or the Orion HCCA-D2400 will provide 1000-1200 watts. I'd recommend the Alpine. For more power, and another $100, look at the Alpine M2000, or for another $250, the Rockford-Fosgate T1500-1bd.

Hope this helps.

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1 Answer

Is it enough to power to 12 volge=ahagen 12oowatss dual 4 ohms

your Volfenhag 12" subs are rated at 1200 watts they are only 600 watts rms and the Rockford punch p4004 is only 200 watts rms so the answer is yes it will work but if you get a amplifier that pushes out 500 - 600 watts rms you will love the sound from subs
there is nothing wrong with the Rockford amp it just wont pound out the bass as hard but the good news is you will never blow the subs with it
when buying amps or subs make sure to look at rms rating that is the true power they actually have ie. (sub box says 1200 watt you think powerful but if you divide it in 1/2 you actually get 600 watts rms) don't get me wrong that's a nice rating. for a sub but you will want to match that number with the amps rms rating or lower. The RMS is what makes the car pound the higher the RMS the better
hope this helps

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Rockford Fosgate Punch 401s starts then smokes

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I have a rockford fosgate p250.2 amp hooked up to two 12' subs but the amp is not powering on... instead the protect light is on and im not sure if its because its so cold outside... please help and thank...

Remove the load from the amplifier (subs) and the RCAs
If the light stays on, there are internal problems with the amplifier, and it needs to be serviced.
If the amplifier works normally, attach the RCA's and power on again.
If it remains on, connect one sub, and then the other.
Your amplifier is a 2 channel amplifier rated at
60 Watt - 4 Ohm - 2 channel(s)
125 Watt - 2 Ohm - 2 channel(s)
250 Watt - 4 Ohm - 1 channel(s)
Your amplifier is not rated for a 2 ohm mono load.
If you have Single voicecoil subs wired in parallel, you have a 2 ohm mono load - your amplifier will eventually fail.

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You shouldn't have the power wire connected to the amp without having the amp's ground terminal connected to a good ground. With some amps, it will damage the head unit.

Does the amp power up normally if you connect power and ground and then apply remote voltage (turn the head unit on)?

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that amp should work fine with those speakers,just make sure that they(speakers)are wired for 2 500-600watts coming from amp, you should be getting 250-300 watts per speaker,just dont crank your gain too high on the amp.

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