PAM8406 5V Amplifier Review 3W Vs. 5W

[@francisli8807]

I just got and tested the right-side one. It is PAM8406 running in Class-AB mode (pin 9 is connected to ground). Thus its sound is warm so is the chip (comparing to the PAM8610 board also received today). 3W into 4ohm as said by the datasheet.

[@surfiero74]

Hey Francis, how did you manage to switch from class AB to class D? Thanks

[@ackunkun]

I think left side one is "PAM8403".

[@198407ankur]

Yeah you are right

[@dr.bharatbapodara3223]

Gf1002 is using if PAM8403 not PAM8406...
Little correction...
Nice informative video.....👍👌

[@MrBrymstond]

The 3 watt version is a PAM8403 and you can always use a half worn triple A battery to figure out what your polarity is by connecting the battery for a split second, if the speaker sucks in, that's negative and if it pushes out, it's positive... If this doesn't work on a large speaker, you need to use a 9v battery, that easy.

[@kittikajorns1811]

No! don't use 9v battery. Max voltage for this tiny amp is 5.5V.

[@electrodeyt3491]

He means the Speaker, not the Amp.

[@surfiero74]

PAM 8406 is the improvement of the PAM 8403!

[@reparalcd]

PAM8406 Datasheet says: 5 watts at 2 Ohms - 3 Watts at 4 Ohms

[@acpadhi]

I have different experience, the PAM8403 amps sound butter smooth, while the PAM8406 sounds distorted.
Also, the 8406 can only throw 5 watts into loads of 2 Ohms and that too when its mode is set to Class D. 8406 supports class AB mode as well as class D mode, so you never know what mode the board is operating on until you use a scope. Also I think, the 8406 mode may be set to Class A/B mode which could be the reason for the Heat. Anyone who buys the 8406 for expecting 5W with 4 ohms Speakers, better buy the 8403, which at least in my case are extremely clean on Audio.

[@TheArachnoBot]

Did you even read the datasheet? Pin 9 for D or A/B mode selection.

[@MrBrymstond]

If you want the battery to draw zero mA, add a two way switch to the positive on the battery

[@yeshansawanapriya2504]

Bro how to best I 🇱🇰

[@AhmedAli-fd3my]

Bro which is better for portable speaker with clear sound and bass

[@hugore293]

But pam8406 offers 5w with 2omh speakers not 4 omh. In 4omh it have same power output than 8403 :(

[@dehrk9024]

Tanks very help full.. :)

[@barneymiller844]

How do you wire up a on off switch on a pam8403 amp board

[@DanSohan]

Barney Miller same way you would with most things. Break the positive supply lead and solder a switch in series

[@barneymiller844]

Dan Sohan thanks

[@MD_Builds]

is your 8406 running in D or AB mode?

[@Aman-cf9iz]

Which capacitor you have used??

[@arjunpm1068]

Wich one is best??

[@oceanradiostation3146]

Thanks for that, video, thats really give a picture of this little amps. I want to build nice low voltage amplifying system for street performing :)

[@UnpluggedAnalog]

Nice information i have purchase but same issue , using 5w 4omhs speaker and input 5v 1 speaker work perfectly other 2nd speaker sound drop down , please suggest how can work perfectly , and you have using same capacitor on this video ,

[@DanSohan]

If you swap the speaker around does the same speaker still sound low? Maybe the speaker is damaged?

[@UnpluggedAnalog]

@@DanSohan but 2nd speaker sound is very low and volume up 20/% speaker sound is cracking

[@gopalrajpoot4835]

There are 2 potentiometer on board adjust them

[@hamishwoyka5599]

hi, what are the plastic bits that connect the wires to the amplifier called? thanks

[@ESTD3]

female to male breadboard connector wires or smth like that

[@ArvinG]

Does the speaker needs to be greater/eqaul for the amp or lessthan/equal?

[@DanSohan]

The speaker should be equal or greater than the wattage of the amp

[@ArvinG]

Dan Sohan thx 👍

[@AaronJohnProduction]

bro what is the max amp of Li-ion battery can i use here
im planning to use a 5v 2.1a using my power bank or 3.7v 4.5Amperes
thanks

[@DanSohan]

Aaron John Dela Cruz plenty. 3.7 volt might be a little low. But 5v from power bank should be perfect and safer

[@AaronJohnProduction]

Dan Sohan tnx bro i will order it soon from lazada

[@babunaidu2562]

Can we connect up to 20 W speaker? of 1500watts subwoofer

[@DanSohan]

babu naidu you can if you want to burn it out

[@babunaidu2562]

lol yes i can

[@babunaidu2562]

but i connected 10w, 4ohms, 4 inch speaker from intex speaker

[@DanSohan]

babu naidu if you amp is a 1000w. You'll be able to run the speaker at 100th full power. If you turn it up the amp power your 10w speaker will smoke and burn

[@DanSohan]

I check out the video. Yes it makes sound, but I wouldn't call that powerful bass! A TDA2030 module would be better. 30W I believe

[@MD_Builds]

White strip is positive

[@DanSohan]

the white strip is what i choose it to be, there is no law on it here in UK, just conformity and good practice. Some times I'm bad!

[@luisgeraldes32]

Hello, can you please test these amps to see which one behaviors best on 5V 500mA only?
I will use them frequently on a USB port from a computer which can only deliver 500mA@5V so, I don't really know which is better under these circumstances.
Thanks in advance! :)

[@DanSohan]

luisgeraldes32 The FC-99 sounds better. That's what I would go for. The amplifier will take as many mA as it needs for the volume. as you increase volume the mA demand increases. therefore your 500mA limit would only cause some distortion or overload the USB socket when the volume is increased above a certain level. (you could reduce the on-board volume controls to prevent this occurring)

[@luisgeraldes32]

Thank you very much. I would go for the 8406 then.
Regards :)

[@DanSohan]

luisgeraldes32 they are sometimes listed as a "TE418"

[@luisgeraldes32]

Only need to search as PAM8406 on eBay. :)

[@dehrk9024]

Whats the name of the test song? :)

[@SimpIeC]

PAM8403 vs PAM8406

[@JulioChavezjfcho]

error..!! is PAM8403..!!

[@MatthiasDiro]

??? "3+3W" and "5+5W" How did you calculate that?
PAM8406 a TOTAL of 5W and NOT 5+5W
Please proof the datasheet.

[@DanSohan]

Ok thanks for pointing that out. Based on sellers data. Will pull the video down shortly once confirmed

[@DanSohan]

You are semi correct - datasheet shows absolute max it 6000mW total into 2 ohm, seems a common error with many sellers listing the item and data as a 5+5W - sorry you found the video unhelpful

[@MatthiasDiro]

@@DanSohan I didn't found the video NOT (!) helpful (thumbed it up) , but I stunned about that everybody is copying the sellers description.

[@MatthiasDiro]

@@DanSohan Where did you got 6000mW?
5W Output at 10% THD with a 2Ω Load and 5V Power Supply
at Class-D Mode
 3W Output at 10% THD with a 4Ω Load and 5V Power Supply
Using 2Ω with 6V VCC would be out of the specs
I'm referring to this www.mouser.at/datasheet/2/115/PAM8406-247303.pdf.
I see on page 8, diagram 17: 6V, but as I wrote above: Out of specs... (and too much distortion :) )

[@DanSohan]

Ok thanks. There is graphic data showing 6w at 5.5v

[@1stUniqueName]

Do I get a beer if I tell you why you have such weird measurements with no input signal????? Because YOU had a signal all the time! You had noise collected by the input wires! This is because you forgot to shortcut the input!!!!! This is how you measure the amplifier "without input signal".

[@DanSohan]

Merula Alba I'm pretty sure the amps were correctly biased, but this could be true

[@1stUniqueName]

it is not about bias. it is about the signal you put into the amps. if both amps are 100.0000% identical but one of them has a longer/thicker input wire then you put more signal in its input.
CONCLUSION:
you ALWAYS need to shortcut the input before do such measurement!

[@DanSohan]

The point is the test was implemented exactly how I wanted to test them. They were to be used in a scinario where the inputs would be left open circuit without an input always connected. I needed to see how much current they draw in this setup. So 100.000% sucesful test for me.

[@harzfier]

It's a well made video but hardly to enjoy with this terrible music in it.