These little PAM modules of all different types are making it real convenient to get and audio output for your small projects. Thanks for the vid
@CaribbeanGTR7 жыл бұрын
The sound quality through the speakers can be discerned quite well, so we do appreciate you playing the music. I can even hear the hiss.
@audiotechlabs46507 жыл бұрын
Great new post John. I use PE for parts(not a paid endorsement) and I found this review valuable because I have not ordered one of their amp modules and this gives me a good idea of the quality of them. I value your assessments of electronics, so this helps me make decisions. Thankz
@HillsWorkbench7 жыл бұрын
Check out his older videos, he has reviewed a several items from them.
@KuntalGhosh5 жыл бұрын
Please also include efficiency numbers in your benchmark ! Its a tiny addition but good to know , some amplifiers are more efficient...!!
@Sayan_here5 жыл бұрын
I'm making a Bluetooth speaker, my drivers are 4ohm (20w max), they produce really good bass if paired with passive radiator. What amplifier should i use? Power supply 12.6v battery pack. Thanks.
@jakubfila57697 жыл бұрын
Hi! I'm planning to buy one of these in not too distant future. I want to use 8ohm speakers and want to get something around 2x15 watt output. Can you recommend me the best amp board in terms of sound quality/price? I like your videos btw. Cool stuff :)
@FonsecaNathan6 жыл бұрын
How do you think the performance would be if you used a solar panel that supplied 7.2 volts at 200mA for two 8 ohm speakers with this amp?
@iceberg7897 жыл бұрын
these class D o/p wires practically function as antenna and give out a lot of em radiation, with those high frequency sampling. some people i read, have suggested using ferrite bead or chokes at the outputs.
@kevinlivingston95637 жыл бұрын
Why play a music sample? Why does a TV chef taste the food in their videos? It's called presentation. Let the man do his thing y'all! Plus it would be like speaker porn without the money shot😕
@JohnAudioTech7 жыл бұрын
The chef analogy is great!
@rich10514145 жыл бұрын
Seems to be reliant on the power supply to be able to provide enough power without sagging or rippling. I have a feeling this little amp would be really bad with a cheap power supply at higher volumes.
@JohnAudioTech5 жыл бұрын
Yes, the power supply is quite important to amplifier performance.
@MrBrymstond7 жыл бұрын
To add a heatsink add 5mm copper shims or the exact dimensions of the amp chip then add a heatsink.
@rajpootyogendra4 жыл бұрын
please suggest a amplifier board for 4ohm 5W stereo speaker
@ALE-wj8oi4 жыл бұрын
kzbin.info/www/bejne/fJPQkoyvlMt4oM0
@nogheelucido95185 жыл бұрын
hello??? how much does the module cost about peso???
@xaenon7 жыл бұрын
I'm curious about how much current this little amp pulls from its power source when it's being driven hard. I'd expect at least 16W draw based on 8W/channel, it's bound to be higher due to overhead and heat dissipation. It looks like an ideal solution for a project I'm thinking about.
@JohnAudioTech7 жыл бұрын
At the measured output of 8.5 w/ch, I'd estimate 19w given an efficiency of around 90%. With 14v supply, current would be 1.36amp. Of course that is with the continuous sine wave. Typical music would only require and average of a couple hundred milliamps or so. YMMV.
@xaenon7 жыл бұрын
John, thank you for that information. It looks like this amp is perfect for what I have in mind. It'll be battery-powered, so high efficiency is a must.
@teohchiawei6 жыл бұрын
Great video... I learn a lot from all your video... just curious, how are we reduce the "hisss" sound?
@michaelpimentel30026 жыл бұрын
The data sheet recommends 2 ferrite chokes around the N-Output and P-Output wire of each channel and two 220pf in series with a center tap ground in parallel with the N and P Input of each speaker. So, 4 ferrite chokes EMI/RFI. range and 4 220pf caps.
@teohchiawei6 жыл бұрын
I am so sorry, i don't understand the explanation about the capacitor placement. Is it the input from each channel of the source or the input to the speaker?
@michaelpimentel30026 жыл бұрын
At the speaker input, there is a + terminal and a - terminal. Take two 220pf capacitors and join them in series so there are now 3 points of connection, the two poles and a center. The center needs to go to ground on the Amplifier circuit. One of the two poles need to go to the t terminal, the other goes to the - terminal. Avoid electrolytic capacitors due to size but if you must solder negative to negative to make it a non-polarized electrolytic. Basically, it's a first order low pass filter to remove the hiss from EMI and RFI which would be about 100Mhz. And so in theory, the capacitors could be connected across the amplifier P Output and N Output. .
@teohchiawei6 жыл бұрын
pm? teohchiawei@gmail.com?
@michaelpimentel30026 жыл бұрын
PM the datasheet check page 13. That will get rid of the RFI/EMI.
@BBXFX7 жыл бұрын
18650 3S 1P fully charged would provide 12.6 volts. do you see any problem with that as a supply? Can you please suggest a cheap Bluetooth receiver, instead of using the 3.5 mm input. I've seen them all over eBay but never tried one yet.
@johncoops68977 жыл бұрын
Buy a PAM8610 with Bluetooth receiver. They are easy to buy on ebay.
@patrickd3087 жыл бұрын
Man, where did you get the transformer behind your tv? I have the same one, but ain't got any clue about the pinout. If you can help me that would be very helpful man. Thanks...
@JohnAudioTech7 жыл бұрын
It came out of an old mini stereo. They can look identical but have different winding configurations. You may be able to see the wires where they connect to the pins. The thicker wires are for the main amplifier. The thinner wires are for the tuner, preamp and such. You have to put a volt meter on them to sort them out.
@patrickd3087 жыл бұрын
JohnAudioTech Mine came from old Aiwa stereo. Mine got 17 pins. Unfortunately, mine were soldered right to the pcb (with large traces), and the pcb is lost somewhere. I'm just curious if i can trace the pin with the bulb load? (that bulb that go to the mains and to your circuit etc) Thanks man
@williamstaten81027 жыл бұрын
Cool, I may get one. Had head phones on, seemed like it had a lot of bass.
@jainvibhore19977 жыл бұрын
I had a cheap 4ohm speaker burnt by this amp at 12 volts!! The chip does get hot as hell without heat sink...
@sputnik42164 жыл бұрын
Luv that Hack Shack calculator!
@ALE-wj8oi4 жыл бұрын
kzbin.info/www/bejne/fJPQkoyvlMt4oM0
@MrBrymstond7 жыл бұрын
Is that a smoothing capacitor I see behind the power jack? I would bet it's a knock off clone, but I wouldn't hesitate to change that for the sake of the community viewership.
@MrBrymstond7 жыл бұрын
I can see it has some ripple so I would replace that cap
@jonnyrocker79195 жыл бұрын
Hahaha! Love the blooper at the end, it sounded genuine! Lol
@ALE-wj8oi4 жыл бұрын
kzbin.info/www/bejne/fJPQkoyvlMt4oM0
@jeffm27873 жыл бұрын
I've got a few of these PAM8610 based boards, they are all RF nightmares. Much prefer the TPA31xxD2 based boards.
@MrBrymstond7 жыл бұрын
I would use a thick copper shim that fits and raises it above the components so I could use a heatsink
@analogaudiorules17245 жыл бұрын
A few things ive notced messing around with this amplifier over the past 3 years, is the louder you turn the volume regardless of the input volume even if the input volume is low and you crank the gain on the actual amplifier, the cleaner it sounds, if you have the amplifiers volume set to a min but still enough to hear alittle with the input volume from your source turned up it sounds grainy, but not as in it clipping the input grainy, but in a lower power state kind of sound even with the input source partially turnd up, its probably due it being a dc stepped controlled amplifier design. i usually run the amp with the volume up all the way and control the volume with my source which i feel gives me better sound quality, I used one heatsink like this www.ebay.com/itm/Mini-8-8-8-8-5mm-Heat-Sink-Top-Mount-Pack-of-10/301459243369?hash=item46305f0169:g:rYsAAOSwg3FUnlDq i also used this artic silver 2 part thermal epoxy to thermally bond the heat sink to the chip only a pea sized mixed drop of both parts in the center of the chip worked great, making sure not to get it on the ics pins or supporting parts. www.ebay.com/itm/Arctic-Silver-Arctic-Alumina-2-PartThermal-Adhesive-Heatsink-Glue-Epoxy-5-Gram/202604404865?hash=item2f2c29e081:g:gWUAAOSw0q1cbzqH after that i got one of these 4 amp 15v switch mode power supplies www.parts-express.com/15v-4a-dc-power-supply-ac-adapter-with-21-x-55mm-center-positive-(-)-plug--120-057 it handles 4 ohms per channel perfectly, even if you really beat on it, even with that little bit extra cost its well worth it. www.parts-express.com/pam8610-2-x-10w-class-d-audio-amplifier-board--320-604 it seems like they did come out with a version, that already has a heat sink and bigger storage capacitor, buy that and that 15v 4 amp power supply and you will be floored.
@ALE-wj8oi4 жыл бұрын
kzbin.info/www/bejne/fJPQkoyvlMt4oM0
@boonedockjourneyman79796 жыл бұрын
You won’t believe this because it runs against the zeitgeist, but KZbin’s audio algorithm isn’t too bad. I used a TEK AA5001 with an SG505, opt. 1, and it came out WAY better than any of the cheap MP3 (JPEGish) algorithms I checked. Surprised me
@manojmehengiya7345 жыл бұрын
can i use 2*3 watt speaker in this amplifier board
@JohnAudioTech5 жыл бұрын
I'd use 10 watt speakers minimum if you like to crank it up.
@jonathanbelzley28777 жыл бұрын
Thanks, buddy!
@lee26carl7 жыл бұрын
I got two of those. IC are getting hot... and its a bit distorted...
@HillsWorkbench7 жыл бұрын
I wonder if they have some kind of internal overheat protection?
@lee26carl7 жыл бұрын
Hill's Workbench im not sure. but mine? I add heatsink just to make it sure...
@JohnAudioTech7 жыл бұрын
While I didn't check this one, about every audio power IC made since the 70's has thermal and short circuit protection. Running the IC hot but short of tripping the thermal protection limiter can still shorten the life of the IC.
@HillsWorkbench7 жыл бұрын
I guess I'm wondering about the nature of the protection method(S). Protect by shutting off until it cools? Or some kind of limp mode that might result in distortion. This could be a video or part of your test regime, attach an undersized heat sink, and run 50% power till they overheat.
@2davydo7 жыл бұрын
He He He great vid. RU Now adding bluper reels at the end of each now. :-))
@JesemanuelRamirez7 жыл бұрын
a filter-less amp, is bad for audio quality?
@JohnAudioTech7 жыл бұрын
No reason it would be.
@acpadhi6 жыл бұрын
You are doing a great Job at your videos. Love them actually. For this AMP, just adding my few cents here : This Damn Chip is probably the worst of the PAM series. It is a RF monster, and that is why your TV amp is playing the audio there. Its Switching frequency(at least in the boards I have checked with) hit severely the FM Radio's IF frequencies, rendering the FM reception almost useless. But it does not stay there, these chips leak RF into the power lines too very happily. I would actually hate to call them good design by any means. using this amplifier without Filters at output and Solid Bypassing at power lines is like polluting the RF environment.
@williamstaten81027 жыл бұрын
found some on ebay with a bigger cap and heat sink !