Passive to Active Subwoofer using a TPA3116D2 Amplifier - Simple DIY Project

welcome back to another diy episode of arctic in this video we're going to convert this sony system's passive subwoofer into an active subwoofer using a tp831162 amplifier circuit from ink ocean i'm going to use this amp to drive the subwoofer with another set of bookshelves let's get right into the project [Music] so i got this on amazon this is a d2 subwoofer digital power amplifier with about 100 watts of rms power this can be powered via a 5 or a 25 volt power supply anything between that is also fine this module comes with a texas instrument chipset which is called the tpa3116d2 apparently it's a class d amplifier board yes these are supposed to be very efficient i am no expert but i saw it on the texas instruments website and the circuit is present there with some instructions this board comes without a casing just by circuit makes sense to place it inside a subwoofer in the box you do have a small volume knob there's a 3.5 mm input jack as well as a 5.5 mm power supply jack for this circuit board it looks quite well soldered honestly this volume control knob also fits well [Music] and it's quite smooth in operation if you turn it extremely towards the left it will switch off the power supply so it's a power button as well [Music] this is an led power indicator three capacitors and it looks like they're really good quality i'm not sure if any one of you recognize this please do let me know in the comments below [Music] there is a nice prominent heatsink red in color which protects the ti chip underneath this green connector there's a green connector at the back i think that's the output to the subwoofer it uses a normal screw mechanism it's not a plug-in place system so you'll need a screwdriver to fasten this to your speakers and you'd see next to the chipset there's a small piece of thermal conductor popping out i think that's uh really weird but i think that's uh that's the only thing spoiling the look of this whole circuit but other than that this looks really nice good quality stuff [Music] overall this is really missing a nice casing they don't provide you with a nice small box for this i think it would have been a good package together so there's a small plastic bag with a few fasteners basically these are these are nuts and bolts that you can use to secure the 3.5 mm jack and the volume control jack if you have a good case or inside the subwoofer itself i found this whole laptop power supply so this is about 19 volts and about 2 amps this can run this circuit can run anywhere between five to 25 volts so it's recommended using a switching power supply to avoid hissing sounds and at least 19 volts is supposed to be ideal for this circuit and this jack fits perfectly this 5.5 mm jack i mean thank god i mean i don't have to do any modifications powering it on and red light glows so no problems here i think it can support 19 volts easily your laptop power supply is good enough now um the thing that you need along with this is also a 3.5 mm input connector which is coming from your source to the subwoofer so now this woofer which i have is a sony subwoofer it can handle about 140 watts rms it's a passive subwoofer looking at the model number it's uh i think it's a ssws 72 speaker system three ohms i really don't know how this uh works in terms of calculation because there's no jargon mentioned on the amplifier as well please do read the instructions on your speakers before you connect one of these don't blow up your speakers and play me for it this is a very old subwoofer it's got a six inch woofer on it technically 6.2 on the website but i would say six inches it's a small subwoofer but good enough for this project and we'll do some testing to find out how powerful it is right uh just to also remind you that this amplifier can handle much bigger woofers 8 to 15 inches i've seen some comments on amazon that you know people have connected 12 inch subwoofers 15 inch subwoofers and they do provide good sound for the casing i just picked up some old boxes just to see if this fits in i really like this sub circular box i mean i think it it kind of fits really well if i just make two you know options to bring out these two jacks it will work nicely but then it's circular so i just felt that you know this will be rolling around the ideal thing which we need for this is a nice you know rectangular box so lucky for me i had one close by and this was much more delicate but i think it will do the job if i just keep it carefully also this box is quite soft for a paper knife to cut the grooves as compared to the circular box so i chose this one it's a little big though so the volume knob will not kind of come out so i'm going to use the 3.5 mm jack and the power supply to be on the outside i'll keep the volume knob inside so i'm going to use this box probably keeping it open so i made the necessary mark hangs on it [Music] and it was quite easy to cut those grooves out [Music] this is a very raw way of doing this whole thing i'm sure you guys have much better boxes and can improvise with much better designs for this amplifier box so this is just a pet project so hope you guys do a better job you can link videos in the comments below my initial thought was to use a cable tie between the box and the circuit right in the middle to secure it i didn't realize that you know you have these fasteners for the 3.5 mm jack so that will hold one part of the circuit and then you know the easier way to go about and finish this whole project faster was just use a glue gun there's also a gap between the circuit and the plastic box which i really like so that you know it doesn't heat up the box so i'm just going to use a few blobs of glue gun and that should hold the whole thing together and this 3.5 mm jack fastener was really nice kind of held the whole circuit itself on its own and the glue gun did the job so um the whole you know box thing finished much faster than i anticipated [Music] so we're all set and all you need to do is just close the box and it looks like a nice diy circuit box and the volume knob also sits inside nicely and i can adjust it comfortably as well well remember just to run this circuit you need a low frequency input or a filtered input for the you know subwoofer frequency sounds via the 3.5 mm jack if you have a system like an edifier 1 8 5 five or the one eight five zero they do have sub sub over outputs which does a good job on the other hand uh you know some of us may not have a subwoofer output and you might want to connect this to let's say a television set directly or a stereo system which has av out i just want to show you how this one this is going to sound if you connect this to a television directly [Music] yeah basically no filters so you'll have some you know low frequency sounds like the vocals a man's voice come out through the speakers because this circuit doesn't filter out you know high frequency sounds [Music] so let's connect this back to our original setup and uh just fastening the wires to make sure they're really secured properly so you'll need a small gap to get the speaker wires in inside this box as well [Music] so once all the connections are done the device is powered on do remember there is a small pop sound from the subwoofer every time you power it on or power it off so that's quite normal for this yep the setup is done so let's quickly do a sound check the amplifier is now on [Music] [Music] is [Music] foreign [Music] so [Music] great it works like a charm [Music] [Music] now uh here's the actual setup i have here it's a professional mic uh subwoofers on the right side of the table the mic is mounted on a shock mount we have a pair of edifier r1855dbs if you want to see the video on that i'll leave a link above here these are already good speakers the is here the amp is kept on it i've added a paper strip to show you subwoofer activity the whole setup is quite simple i shall put up icons on the corner of the screen to show you if the subwoofer is on or off okay for the first test the is actually switched off [Music] so you will get this thud whenever you switch on the amp just remember that so so let's watch a movie trailer with a sub on why am i here yes because it's my military duty only point five percent of the population survived for every one survivor there are a thousand dead for centuries you believed in someone you'd never seen millions just like me will be here soon they will all want the same thing you'll do what you were created for [Music] as we all know something happened 24 days ago and all contact was lost with most of the world everything outside of this circle is in complete darkness as of now we'll make anyone still alive in the quarantine zone attack us they're 160 million of them [Music] last hope do you think they're going to take moscow [Music] the war has begun [Music] here's another test [Music] [Music] hey [Music] [Music] down [Music] me [Music] [Music] so [Music] let's do another one dollars a thousand rupees you're getting this really decent 100 watt class d amplifier that you can use at home use it to drive a subwoofer in your car and thanks to its wide voltage input capabilities 5 volt to 25 volt input capabilities you can use it at home or in the car um you don't get the casing yeah that's i think a slight negative on this one yeah you don't get the casing but i think it's really worth the money if you have good subwoofer speakers and you should definitely try using this to drive uh some of your passive subwoofers as a project you do get this amplifier and variations again with the same chipset to drive stereo speakers with an amp uh for example so you get a two channel with a subwoofer out you can try those i'll leave links in the description below the setup which i have just to show you whatever i can do is not professional but you know just to give an idea how this amplifier is working and the difference it makes i hope you like this video uh please do hit this like button please do hit the like button and consider subscribing for many such videos once again thank you so much for watching our take i'll see you in the next one bye [Music]

Channel: rTech

Views: 41,391

Keywords: subwoofer, sub, subout, TPA3116D2, diy, passive, amp, class d, diy subwoofer, diy active subwoofer, active subwoofer, diy bluetooth subwoofer, subwoofer build, diy home theater subwoofer, homemade subwoofer, how to make a subwoofer, active home theater subwoofer, active diy subwoofer, diy wireless subwoofer, how to build a subwoofer, diy ported subwoofer, diy multimedia subwoofer, diy powered subwoofer, diy speaker, diy down firing subwoofer, diy subwoofer box home theater, rtech

Id: P7jtBBeC--s

Length: 17min 54sec (1074 seconds)

Published: Mon May 03 2021