Reddit reviews AOSHIKE 8-25V 100W TPA3116 Subwoofer Digital Power Amplifier Board TPA3116D2 Amplifiers NE5532 subwoofer Plate Amplifier
We found 3 Reddit comments about AOSHIKE 8-25V 100W TPA3116 Subwoofer Digital Power Amplifier Board TPA3116D2 Amplifiers NE5532 subwoofer Plate Amplifier. Here are the top ones, ranked by their Reddit score.
Power Range: 8-25V;Power connector is a standard 5.5MM power jack,you can use your laptop power, Other input is Aux input,it is 3.5mm portMaximum output power: 50W (left channel) + 50W (Right channel), dual- channel output, efficiency up to 90 percentAdopt Tpa3116 high-performance amplifier chip as the core, DC single power supply, wide operating Voltage range 8-25V.Can use the switching power supply, laptop switching power supply, battery and vehicle power supply(Make sure the power supply is adequate,and 12-24V,About 3A.The audio input is sufficient,And the Power voltage/current is sufficient,in this case ,there will be enough output power.) Here is the 19V power link:https://amzn.to/2Pu87Gv(Not included))PCB size: 75X60MM (Any problem with it,pls contact us:https://www.amazon.com/sp?seller=A3BG62S1F23IH5)
I don't know about robust, but I'm using one of these under $15 board only amps right now, on a 12VDC power supply:
https://www.amazon.com/gp/product/B01N0PXEN4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I'm feeding an Aurasound transducer with it, from the dedicated center channel output on my motherboard, so I didn't need a separate crossover: https://www.amazon.com/gp/product/B0002ZPTBI/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Turned up to about 6/10 it seems to give me pretty good feedback. I don't know about how "crisp" it is TBH. [That's highly dependent on how you have a transducer mounted to transfer impulses to some other structure, which might have some resonance or flex/absorption, depending.] The amp is rated 100W into 8ohms, but it would deliver better output into a 4ohm transducer if I had it on a higher voltage supply (input can be up to 24V and they recommend 19V e.g. laptop type chargers).
Anyway, it's an option at least. So far been functioning for about 6 months of irregular use.
https://www.amazon.com/gp/product/B01N0PXEN4
It's working pretty decently. Having a nice power supply helps drive it.
That's a cool effect. The key is that the speaker is driven with a 30 Hz tone and the camera is running at 30 fps. To keep the clarity, the camera shutter is set to a very short value, like 1/500 to 1/1000 second. I have done similar effects to show speakers moving, just not with the non-Newtonian fluid.
Understand that the effect won't look like the video to the naked eye because the short shutter speed is freezing the action. To get a similar visual effect, you would need to illuminate the speaker with a strobe light running at the same frequency as the tone driving the speaker.
From the looks of the video, you will need a 6 to 8-inch speaker with at least 50-watt power handling capacity. This one might be a good choice. Don't worry about the specs of the speaker for audio quality. You don't need good frequency response or low distortion for this purpose.
A 4-ohm speaker will get a little more power from the amplifier. Remember that speakers are not designed to handle a single tone at full power for more than a few seconds, so don't run it any louder than you have to because you may overheat the speaker. If you plan to run this very long, keep your nose alerted because you can smell the glue overheating if sniff around close to the speaker.
To drive the speaker sufficiently, you will need at least a 10-watt amplifier with good low-frequency response. More (up to 50 watts) would be better. [A cheap board amplifier like this] (https://smile.amazon.com/Aoshike-Subwoofer-Amplifier-TPA3116D2-Amplifiers/dp/B01N0PXEN4/ref=sr_1_15?ie=UTF8&qid=1539029251&sr=8-15&keywords=board+amplifier) will do a great job. You'll also need a power supply like this one or similar.
You can get the tone from your phone with a simple tone generator app.
Hope this helps. Ask questions if you want.