Vrx Bass Tube Built in amplifier

Hi Joshyinoman, your subwoofer, is active, that is, it has its own amplifier, just take the bass audio signal from your Pioneer
Check if it is properly plugged into the power outlet, if the signal cable is properly and correctly connected to the Subwoofer Out of the Pioneer
If all this is well, then you have a problem with the internal amplifier, if so, look for a specialized technical service
I hope you can solve the problem
Regards Franco Dosil

Hola Joshyinoman, tu subwoofer, es activo, es decir tiene amplificador propio, solo toma la se?al de audio de graves de tu Pioneer
Controla si esta bien enchufado al toma corriente, si el cable de se?al, esta bien y correctamente conectado en la salida Subwoofer Out, del Pioneer
si todo esto esta bien, entonces tienes un problema con el amplificador interno, si es asi, busca un servicio tecnico especializado
Espero puedas resolver el problema
Saludos Franco Dosil
https://www.pioneerelectronics.com/ephox/StaticFiles/PUSA/Files/VSX-818V-K.pdf

http://www.pioneer-latin.com/downloads/vsx-918-k%20-%20spanish.pdf

As a 40 year guitarist and repair technician I had to laugh at this until I thought about my younger days of starting out. What I see here is that you made a momentary trigger out of a stomp box that apparently had problems, that you think you can build an electronic bass drum to play it with. Is this correct? See, the amp only gives a bass drum sound ONLY if a bass drum sound goes through it. Amps only provide audio power to the input signal. Where to get you bass drum sound is what you need to find. I believe you are thinking of a sample. A sample is an actual recorded sound of a bass drum that you could actually trigger by stepping on that button. You could find this on most cheaper casio, yamaha, emerson, radioshack, keyboards or drumpads or any of those amateur toys. Most of them allow a trigger pedal to be plugged into it and operational. Now, after you find something with a bass drum sample that you can trigger with your pedal, that device should allow you to plug it into an amp to amplify it. I hope I didn't confuse you much and had a close perspective of what you tried to describe. Please let me know if I can help further.

Chances are you are using the WRONG adapter or the battery is dead. Try new battery. Also measure the voltage out of the adapter. It should be 9 volts DC.

It sounds to me like it has the wrong scan coils fitted to the replacement tube and there is no fix for that. You will need to fit the correct tube or have the old tube re built.

the red light is for power in protect mode it should be orange and it will not emmit sound if you think you should have better sounding bass or more bass you can try to play with the gains on the amp or possibly if you have the negative or positive hooked up wrong from a speaker to the amp this will cause the bass to be lower and somewhat distorted double check your positive and negative wires from the speaker to the amp and make sure they are correct

relatively simple 2 leg pot. fix.
Under $50 to repair.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Have you checked all circuit boards for good solder connections.
Also if the boards had been wet from anything, you might clean the boards and resolder all connections specially in the power supply and audio section.

Let me know.

the amp is going into protect mode due to something wrong in the amp or some thing in the wiring to it ooh yea if you are getting 18v power to the amp that is way to high it should not be higher then 15v if the amp is in protect mode it will not play at all.

It probably has shorted output transistors. To eliminate other possible causes, read through the following page.

Amplifier in Protect Mode - Troubleshooting

Let me know if you have any other questions.

If the subs are pushed to their limits straight out and remain there as long as the amp is on, the amplifier probably has shorted output transistors. If the speakers are moving in and out like they would be on a bass note, there may be something wrong with the shield ground of the head unit.