Question about Pyramid - PS21KX 20 Amp Power Supply Car Audio Amplifier

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I am getting 240volt accross the ground and neutral at the output

110volts outlet after i put in a 220 single phase in a110--220voltsstabliser.due to this fact my back up surge protector wiring fault light comes on.

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Amp heating up


__Amplifier Heating__

Causes:

1-insufficient air circulation to the amplifier where installed
2-incorrect speaker connection (out of phase)
3-overvoltage of amplifier
4-insufficient power to the amp
5-ground cable not contacting properly
6-unbalanced OHM loads (different ohms speakers driven at the same time
Solutions:
1-change location of amplifier
2-connect all (+) and (-) of speakers to their corresponding connection on the amplifier
3-the input sensitivity (gain) of the amplifier is to high in relation with the headunits output voltage. match output of unit to input of amplifier
4-the cable is to thin to provide adequate current to the amplifier or the car battery is on its way out
5-secure ground cable and make sure there is always a clean secure ground to the chasis. ( checking power and ground cables should be done on a monthly basis due to the vibration factor in vehicles
6-use speakers with the same ohm load

Hope this helps. for further help let me know what equipment you r using and how they r connected.
.......andy........

Dec 26, 2013 | Soundstream Car Amplifiers

1 Answer

Movie wont play


The Stereo is looking for a ground signal on the parking brake wire. It's a safety feature so that you are not watching movies while driving. To bypass this you will need to connect the stereo's parking brake to ground.

Sep 03, 2012 | Phase Linear UPA424CS Car Audio Amplifier

1 Answer

After about ten minuites of playing the amp shuts down and goes to protect mode.. I can then wait 2 minuites and turn it back on and it goes for a while again before repeating the sequence. Is it my...


Amps shut down due to, A: Short circuit, B: Overload. C: Over Heating. It is possible that the Output devices inside the Amp. get too hot during use, Are your speaker "Leads" "Big" enough? Is you Power Positive wire the same, Also as you say, Check your Earth. Sometimes a Fan on the output devices helps.

Mar 10, 2010 | Car Amplifiers

1 Answer

What is the wire diagram for the 3way bx35 boss crossover


Hello rew_smith,

The wiring diagram is silk screened right on the top of the unit. If your diagram is missing or obscured, you can get one directly from www.bossaudio.com.

The first 3 pairs of connections for subwoofer, front, and rear inputs coming from your receiver or head unit. Top is left channel, bottom is right channel. The 2nd set of connections are the outputs and matched in function to the first set. These are connected to your amp(s).

To the right of the input/output connectors are the 12V +, remote and ground screw terminals. The 2 switches and 9 controls allow you to set the high-pass frequency and output levels for the front and rear channels, and the crossover frequency, bass boost, phase, and output level for the subwoofer.

Hope this helps.

Aug 23, 2009 | Boss Car Amplifiers

2 Answers

Amp in power protect


Protection Circuit is bad. It needs to be serviced. If all speaker wires are disconnected and it's still in protection, it's got a problem. Hope this helps

Aug 08, 2009 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

Amp Power Protection


sounds like the amp gain is too high, grounded incorrectly, or the amp is bad. the ground wire should be no more than 2 feet long.

Aug 08, 2009 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

T1500-1bd burnt mosfet


First of all is the mosfet your talking about in the output section or in the power supply section? Most car amps use mosfets in the power supply section, some use them in the output section. To test the transistors in your amp, take a digital volt meter and set it to diode check. Then take the leads and put them accross the first and third legs of the transistors. Usally the red test lead on the first leg and black test lead on the third leg of transistor. If you get a reading of 000 then transistor is shorted. If you get a reading below 600 then transistor is on it's way out if not allready or it's next to a shorted transistor that is it's complimentry output transistor. comonly you will have 2 transistors working together, one NPN and one PNP per a channel, or 4 of them in a bridged type output circuit depending on the watts and how man channels your amp has. I was just looking at the specs of this amp and it's got me confused. It says it's a 2 channel but looking at all the info on different pages it says at 4ohm:200wattsx4 and at 2ohms:300wattsx4 and 1 channel mono 600watts into 4ohms. weird for a 2 channel. anyway that is how you test your transistors. Same way for the power supply section but, you will come accross a couple or more switching diodes that look like transistors and you will get a 000 reading when you test those like I specified. They rarely go out and most of the time there is only 2 of them. They will have a diagram like a diode on the front showing you which way the power flows. Let me know what you find out. Your amp should have went to protect mode if you smoked a mosfet.

Feb 08, 2009 | Audiofonics ADF-243 Car Audio Amplifier

2 Answers

Alpine 3523 no instructions or wiring


I know this is a little late but I have one and the hookup is very easy, On the right side of the amp there is a six pin plug. Above it it says BATT REMOTE GND. The two pins below BATT are the battery (V+). The pin below REMOTE is the (V+) switched turn on. The two pins below GND are the ground. The rest is simple. Two RCA inputs. The switch to select MONO(R), STEREO, or MONO(L) works as explained. If you want stereo, put the switch in the middle and supply two inputs and two speakers. The MONO(R) and MONO(L) are to select a single input that will supply a single (bridged) output. Connect two speakers and they will supply the same source or connect one speaker to the outer speaker terminals for higher power output. The variable or fixed switch just bypasses the GAIN CONTROL knobs(used for Alpine's 8 pin DIN plug on unit, for older EQ's and head units.

Jan 15, 2008 | Car Amplifiers

1 Answer

My amp


Does it turn on (are the lights on... and if so is the "protect" light lit)?

Sep 23, 2007 | Phase Linear UPA424CS Car Audio Amplifier

1 Answer

Car amp's stopped working. Putting out a heart beat sound through subs but no bass.


could be low current ,disconnect all power including ground for 20min N.B most amps will seem to be shorted at output but this is normal due to damping ratio.

Jun 11, 2007 | Jl Audio E1200 Car Audio Amplifier

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