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I'm not sure what you mean by 'wide open voltage'. If it's over 17v, the supply may have multiple problems. I don't have the 52kx schematic but other Pyramid supplies have over-voltage protection. There is an SCR that is triggered when the voltage gets to ~17v. This should clamp the output and trigger a shutdown. You should check the 16v Zener diode and the SCR. If the SCR or the Zener is defective, that would prevent the over-voltage from clamping the voltage. Also confirm that the SCR has a solid connection to the ground terminal of the supply. If it's open, that could prevent the clamp from shutting down the supply.

If the voltage is going high, measure the DC voltage from pin 4 to pin 5 of the LM723. It should remain the same at all times. Also measure the voltage from pin 5 to the ground terminal of the supply. That should also remain constant at all times.

Pyramid - PS21KX... | Answered on Jan 12, 2017


Running mixer to receiver??? does the mixer have rca (red & white) audio outputs? if so you can run it that way and hookup to whatever input you want on back of stereo. If it doesn't then you can buy a 1/8" stereo jack to rca and run out of headphone out. (will need a 1/4" headphone adapter though).

Pyramid Music | Answered on Jun 06, 2016


Hi Linda, It's called a pyramid because it starts with one person putting money into a fund, Say it's a guy, He then invite as many people as he can(say 10) to do the same and then those 10 people invite as many as they can(say 10 each x10=100) and so on100x10=1,000) and on(1,000x10=10,000)... see how it grows... And what happens is the 1st guy gets a percentage of the money from the 10 people he invites plus a percentage from the 100 people they invited and it goes on and on, , the people he invited get a percentage of the people they invite plus a percentage from the people they invited and so on and on and it just keeps going and going and the higher on the list you are the more money you get but the lower on the list you are the more you struggle as it gets harder and harder to make money because everybody above you on the list are all getting a percentage from people all down the list until eventually everybody on the bottom of the list looses all their money and that's why it's *******......DO NOT DO IT, If you make any money from this scheme just know it's from people loosing theirs, Take care.........

Pyramid Car... | Answered on May 01, 2016


The volume is one third the product of the area of the base times the height or (1/3)B*h

Pyramid... | Answered on Apr 01, 2016


you will only be able to control 1 pair of speakers, you can try an inline converter. always buy a stereo with 3 preouts especially if you plan on using equalizers/amps ect

Pyramid 801... | Answered on Dec 09, 2015


You probably have a switching power supply which requires a load connected to it before it is turned on.

Pyramid... | Answered on Jul 29, 2015


Quiero un Pyramid SE403-VL-LED Graphic Equalizer deseo que melo vendan buen estado

Pyramid Car... | Answered on Feb 21, 2015


Have you set it up properly ? Consult instruction book. If you are certain it is defective, get a refund under the warranty (if it's new it should still be under guarantee)
18.January.2015.

Pyramid PS52KX... | Answered on Jan 18, 2015


if the amp is shutting down and the protect light is coming on you just have to let it cool down because it is getting to hot, sounds like you are pulling to many OHMS for the amp. if you are running your speakers bridged you can try running them unbridged (parallel) and that will drop the OHMS letting it run cooler. or you might have to try a different speaker/amp combination speakers might be to many ohms for the amp.

Pyramid PB1000... | Answered on Dec 20, 2014

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