How do I know if the pre amp on the back of my power acoustik 500w subwoofer is working? its old school round housing

• Smart Control enables select Mobile 8 models to communicate with the media player of most Smartphones and tablets
• Smart Control sends playback commands by the AUX cable connected to the headphone output of your smart device
• Control track selection, play/pause, and even answer incoming calls. AUX cable included. Variable Subwoofer Pre-Amp Output
• Play audio, video, and picture files through Mobile 8 from DVD, CD, or 32GB SD/USB flash drive. Supports MP3 & WAV audio files & MP4 video files, and JPG pictures.
• Safely make and receive hands-free phone calls, scroll contacts lists, and stream MP3's via A2DP from your enabled Smartphone. Most Bluetooth enabled Smartphones seamlessly pair

you can do it but that bass cannon will not power the sub well at all. They put out maybe 40 watts RMS. best to find a cheep receiver and do it that way a lot less hassle. better sound. If you dont understand give me a shout.

Sub-woofers work on a low hertz as per audio. You have a built-in amp that has a crossover that separates frequencies under 100 Hz. Typical Hertz range is between 20-60. Since you have a built-in amp the black rectangle is a heat sink which helps to dissipate heat away from the internal components and also seconds as a cover to keep debris and other foreign objects from getting to the amp and burning it out.

Hope this helps.

set gain low. the other is your filtering frequency as at what hertz you want to listen at switch threw them for your best sound.

yes, but you will need a significant 12 volt power inverter to support 500 watts

the shown photo is a bit confusing too me , clearly this is an automotive speaker , but in the photo there is clearly a home power cord shown , is this power cord connected anywhere on this speaker ? as if it is , id be afraid that amp has received home power and not car power , as the two are not the same and have tremendous differences and would be quite damaging to this amp possibly unrepairable damage

Question makes no sense.

you want to use a car amplfier indoors in the house

yeah that can be done very easily
just wire it like you would inside a car but you need to purchase a 12v DC adapter
i would go for one with at least 3A output (the bigger the better it depends on how much u wanna spend) from personal expericance 1.5A works but when it gets loud the amp stops and restarts

try using an ipod or mp3 and hook it up directly to the amp input section-if its lit up and you get sound then youre not getting signal from your deck and youll have to track that problem down at the deck-if you still dont get any sound by connecting directly into the amp inputs then you may want to check all amp settings and be sure that your set up right and if it has external fuses make sure that they are all good and if it still wont give you any sound than take it in and get it checked out-hopefully its just not getting any signal cuz if its the amp then sorry to hear it-but good luck