Thanks for posting. No instructions came with the device. I was shipped 8 black screws and only 3 gold spacer screws. Had to measure and order another spacer screw.
Does it have short circuit protection on the speaker output? I'm just curious because i accidentally shorted the speaker output of this amplifier while it sounds😢
Any idea to help me out? I tried with mid range speakers L/R and a small 30w 4ohm ayima 3inch subwoofer. I used first 12v power supply and then tried 20v. both times midrange works great but subwoofer doesn't work right it sounds weird and warms up really quickly and with the 20v it blew little smoke also... Is the amp bad or what could be the problem?
@@soiamthemax6805 I use Bluetooth to connect a subwoofer at 4 ohms, the center channel works fine. But the subwoofer is not working. Currently contacting a merchant from China, but the merchant doesn't seem interested.
@@phusit4364 is in the warrant date yet? if yes you probably need a replacement, try use another speaker in the sub channel for test, also see if there is no metalic chips in the amplifier board causing short-circuit.
@@soiamthemax6805 yes i tried and same No foreign objects or buckwheat metal sticking together. But see glue stains on the circuit board like old things made new not produced from the factory Wait for the verdict within 2 days. From now on, I will have to be more careful when buying things from China.
Thanks. It helped!
Thanks for posting. No instructions came with the device. I was shipped 8 black screws and only 3 gold spacer screws. Had to measure and order another spacer screw.
nice, thanks
Gracias
Does it have short circuit protection on the speaker output? I'm just curious because i accidentally shorted the speaker output of this amplifier while it sounds😢
Any idea to help me out? I tried with mid range speakers L/R and a small 30w 4ohm ayima 3inch subwoofer. I used first 12v power supply and then tried 20v. both times midrange works great but subwoofer doesn't work right it sounds weird and warms up really quickly and with the 20v it blew little smoke also... Is the amp bad or what could be the problem?
My subwoofer has pulsating electric shocks and sounds like a fire leak. and no music Is this normal?
not normal, are impedance of subwoofer ok? the minimum is 4 ohms.
are you using p2 input or Bluetooth?
@@soiamthemax6805 I use Bluetooth to connect a subwoofer at 4 ohms, the center channel works fine. But the subwoofer is not working. Currently contacting a merchant from China, but the merchant doesn't seem interested.
@@phusit4364 is in the warrant date yet? if yes you probably need a replacement, try use another speaker in the sub channel for test, also see if there is no metalic chips in the amplifier board causing short-circuit.
@@soiamthemax6805 yes i tried and same No foreign objects or buckwheat metal sticking together. But see glue stains on the circuit board like old things made new not produced from the factory Wait for the verdict within 2 days. From now on, I will have to be more careful when buying things from China.
check the heatsink of chip, if overtight can cause this too, just enough pression to touch the chip.
Bluetooth ?
Ambos tem bluetooth, tanto o zk-mt21 quanto o Zk-tb21