Tem o link dele?

Это определенно шедевр Д-класса! :-) Пойдем, поищем класс А :-)

@@DmitriNesterov qudoqq

Please don't say qudoqq my friend. It frightens the animals. @@RamilOmon

Same

Quanto é a potência desses alto-falantes

@@ezequiasdossantos3701 Os que eu utilizo em casa são (1 Tweeter Ultravox de 150rms; 1 Woofer Eros de 10 polegadas de 300rms e 1 sub Eastech de 250rms)... OBS: os falantes são mais potentes, mas desde que vc respeite a impedância... Vai tocar muito. Para meu uso está excelente.

@@rodrigoamorim5537 Sim, eu testei colocar a impedância abaixo de 4ohms pra testar o sistema de proteção, quando aumenta muito o volume, ele desliga para proteger o sistema, muito bom esse amplificador.

@@ezequiasdossantos3701 Eu tenho um apesar no manual diz 2 falantes de 50w cada e um sbwoofer de 100w porém eu uso caixas mais fortes que isso no talo a unica coisa que venho reclamar é dos vizinhos que vem bater na minha porta pedindo para abaixar o som kkkkkkkkkk

There are some reviews on UKposts for this, but maybe one day I'll make my own.

Yes it's the same with this one. They all use the same jieli Bluetooth/aux chip. It is just how A2DP Bluetooth works, it takes a while for the chip to start the output after periods of silence because when there is no signal on the Bluetooth audio it mutes the output to reduce the hiss, it takes a while for it to realise there is music playing and to unmute it.

Being a cheap device it definitely won't be audiophile levels of quality, but for non professional stuff I think it would be fine. Beware though that the 3.5mm input seems to have issues with these devices.

What impedance is the subwoofer? this amplifier is only designed for 4-8 ohms. Also I suggest using a small fan to keep the heatsink cool when using it at high power.

You can use a 800w subwoofer, but this amplifier will not drive it at its full potential. Also, if you are going to use the amplifier at full power for a long time, make sure you keep the amplifier chip cool with a fan on the heatsink.

Yes that's right.

I'm using 2ohm on subwoofer side without any heat problem

​@@kartiksharmakartiksharma4399its still a bit unsafe , find two subwoofer of 2ohm connect both in series bring it to 4 ohms then no problems at all. It will run longer , i have build a system with one mono mini 200watt amplifier for sub and a 2.0 150+150 watt amplifier for 4 home theater stand speaker , thats mean one speaker is 75 watt 8ohms , i connect two in parallel i manage to get 150watt 4ohms for one channel in the amplifier and the other channel i connect the other 2, the only problem is i couldn't run the system at full potential because of my power supply, i was a bit hurry for the build and i didn't have enough money for the power supply so i bought a 24v 15a lighting power supply instead of 24v 20a which will give me around 480 watt that mean near the full potential of the whole system, but even with the 360 watt power the system is very loud, for the sub amplifier is too powerful for my subwoofer, my sub is 100watt so i only run the mono amplifier at half volume only , so the 360 watt is not a problem at all . i manage to run this combination for around 3 years , now im looking to extend it with another 2.0 amplifier + plus one mono amplifier and another 24v 20a power supply, to be honest ok let me send the item link in the comment you will see all things i bought online

​@kartiksharmakartiksharma4399 so that amplifier requires any ohms

Is 8 ohm work great with this amp?

When pushing a lot of power through it you will absolutely need a fan

Agreed, but the small one is impressive with the right power source, I'm running a power source with 24v @ 3amp and it makes the amp run solo good

Dayton audio TCP115-8, 4" 40w RMS 8Ω

Probably but it might not drive it with very much power

For output filtering or input?

I have been using it with aux mode and have not experienced this, however the connector is very fussy with what cable I use. Some cables do not give a good connection and only work at specific angles while others work perfectly.

You could use a software based equaliser for bluetooth (like wavelet) or you could pass an analogue signal through a physical equaliser into the aux input of the amplifier, but the aux input isn't great on this amplifier and the normal L and R channels have a high pass filter for some reason so you won't get much bass through them

I have had some issues with the 3.5mm input where I'd have to hold the connector a specific way to make it work, but it hasn't been an issue for me since I am using it almost exclusively with Bluetooth. As for the noises, I think that's just part of the experience with cheap Bluetooth devices. I haven't noticed it much because I don't use it at very high volumes.

​@@scellysspeakers thanks! my dilemma if I should return mine. I also resorted to Bluetooth but it is not too reliable under Windows PC once I started touching settings, on top of the tiny latency. The small amp is indeed powerful but I did a lot of tweaks to enhance low bass/subwoofer channel while reducing the rest of frequencies. now I'm around 80% volume. I slightly made the noise less noticeable by using smaller weaker main speakers and reducing treble on device and equalizer. anyways you say it is normal so it won't make sense to return mine and buy a more powerful one like the Zk-HT21. I'll probably reuse this amp for a DIY bluetooth speaker in the future. thanks again, subbed!

BT is off on my device when aux is connected

Dayton TCP115-8

Yes this amplifier is described as being able to output 200w, but I'm not driving it even close to that in this video because I do not have any speakers even remotely capable of it. It's more of an unboxing/building/simple test video.

No, there isn't any way which frustrated me a lot. From what I read online, the only way to fix it is to reflash the jieli MCU on the board with a firmware that prioritises AUX over bluetooth.

good for you, on my device if I plug in aux it turns off BT completely :/

Dayton Audio TCP115-8

Muchas gracias !!!!!!!!!!

i've searched these matters before.. as long as you use 12-24v with at least 5a, example 12v 5a or 19v 5a, you can power it up but the speakers might be distorted on higher volume, if you're not using 24v.. but amps must be sure to match or higher.. do not get anything past 24v for this

@@TanJianWei92 It is recommended to use 24v 5A, but I have a 24v 6A power supply.

Нужен 25в , 8-10 ампер

You can as long as it is 4Ω or more but you'd probably want a bigger amplifier for something like that

For constant use I suggest you use a small fan on the heatsink to keep it cool, it will get hot if you use it at high power continuously.

@@scellysspeakers thanks my broo... i've been subscribe to you 👌

£22 from amazon

All songs are in the description

Yes it bottoms out, it's only designed for around 40w RMS

www.amazon.co.uk/TCP115-8-Treated-Paper-Cone-Woofer/dp/B07C7MY2D5 This is where I bought my one

TCP115-8

Depends on the impedance, but it should be able to run at a full 100w for 4 ohm speakers with the amplifier running on 24v. Although for high power like that I suggest adding some sort of active cooling to the amplifier.

No there is a delay from it turning on and the speaker output being enabled

@@scellysspeakers thank you 😊. I have a problem with the Tpa3116d2 amplifier. It does that start-up thumbing.

@@Geniusinventor I personally have not experienced it, you can see in the video when I power it on with the speakers connected that it's silent until the Bluetooth sound plays.

@@scellysspeakers how is the sound quality on it? Does it have distortion on higher volumes?

@@Geniusinventor Sound quality is generally good, there is distortion at high volumes if you use a power supply less than 19v.

This can do 50w RMS @ 4ohms on the subwoofer, so only 25wrms on your 8ohm sub. Also 50wrms for left+right channels.

18- 20 ватт rms ,будет выдавать ваш сабвуфер при данном питании ,слишком много 8 Ом ,нужно 2 Ом

The lower the ohms are the more power they pull,which in all actuality gives you more from your amp

Yes that's common with the jieli microcontrollers on them, they can be flashed with firmware that gives aux priority over Bluetooth so you can't connect to it when aux is connected. I so far have not found any way to do this though. There are some forum threads online that discuss it but don't have any success.

if only you could show us how to cut the bluetooth output to the preamp section.... or perhapas any idea to mix the signal from bluetooth with some signals from microphone preamp?

I have this exact amp I bought 2 years ago and have abused it daily and it still works perfectly. However at some point the Bluetooth range went from a dismal 10' range new to about 12"! I literally had to leave my phone on top of the amp to get clear reception (have another 100wx2 amp that does this too). I bought a cheap Bluetooth antenna from parts express($5) and cut the PCB antenna about 5mm in and soldered the tiny antenna wires to it and now my range is about 20 feet! The antenna is a chassis mount and the antenna can unscrew from the mount. I drilled a hole to mount it in the top cover and when the antenna is attached lays almost flat with the cover. Antenna and cover are parallel to each other.

@@KGrasso89 thanks for the feedback as im planing to buy buy one to reuse some old stereo speakers.

@@voodooyam I've been very happy with the performance of the amps I own with exception to the Bluetooth range. I have no idea how the range can deteriorate like it did. I use one to power 2 old Polk speakers and an 8" subwoofer hooked to my TV. Another is used to push 4 8" ceiling mounted speakers(2 on each channel in parallel to make 4ohm load) in my enclosed porch.

What power supply did you use? It will distort heavily at high volumes if you use anything under 24v with at least 4 amps of current capacity.

El woofer es de Dayton Audio, TCP115-8 y los parlantes más pequeños son de un televisor JVC, no tienen un número de modelo específico.

Well speaker are speakers

Any amplifier can in theory be connected to a car, but this one is not designed for that purpose. It doesn't use the connectors and wire harnesses that are for cars. You create your own custom harness for your car to connect to it and power it from the car's battery, but you will have to make these adapters and harnesses yourself.

Yes, the amplifier in the video is a genuine one. You can tell because the fakes have glossy PCB top covers and do not have small SMD components around the chokes.

Где заказал по такой цене?

Здравствуйте! Скажите пожалуйста где заказали такой усилитель по такой цене?

На озоне, была распродажа, открывалась на 5 часов. Была по 900 рублей, + бонусы списал. Сейчас уже дороже, от 1400.. Эх надо было 2 брать..

@@Denisaviches спасибо за ответ! Не подскажете в чем отличие этого усилителя от zk-mt21?

​@@Denisavichesспасибо! Можно ссылку прислать сюда где заказывали?

It supports 4-8 ohm speaker drivers according to the datasheet for the amplifier chips used.

Yes it will but you won't get the maximum power from it. For highest power output you will want something like a 24v 5a power supply.

Да

@@user-dk4cu6ue5w thanx

You'd expect probably around 70ish watts maximum power output from the subwoofer channel at that voltage.

@@scellysspeakers 70 watts but how much resistance do you think the subwoofer should have?

@@nguyenhoangduykhai4303 4 ohms ideally

@@scellysspeakers 3 ohms usable and can you tell me what effect the ohms spec has on the speaker

@@nguyenhoangduykhai4303 The lower the impedance (ohms), the more current the speaker will draw from the amplifier at a given RMS voltage. If you use a speaker below 4 ohms you are drawing more current from the amplifier than it is designed to and this can cause overheating of the amplifier. This is why in car audio subwoofers have very low impedances but other scenarios like home theatres have higher impedances, because in car audio systems the voltage used is lower (12v) so therefore a lower impedance is needed to get more power.

JVC TV speakers and a Dayton Audio woofer

​@@scellysspeakers❤❤❤

I bought it individually from amazon

@@scellysspeakers May I ask for a link to purchase the subwoofer?

www.amazon.co.uk/TCP115-8-Treated-Paper-Cone-Woofer/dp/B07C7MY2D5@@zaft4517

@@scellysspeakers Too bad the product is no longer available 🤦

@@zaft4517 Here in the UK there are 14 left in stock

www.amazon.co.uk/TCP115-8-Treated-Paper-Cone-Woofer/dp/B07C7MY2D5

मुझे यकीन नहीं है कि क्या आप इसे अपने बाजार में पा सकते हैं। इसकी कीमत £26 GBP है

It can be bought for around £11 GBP on aliexpress, but I bought it for £25 GBP on amazon because shipping is faster.

You would want to use a 24v power supply of at least 5 amps current capacity to get the most out of it, if you use anything under 18v it will distort heavily at high volumes.

@@scellysspeakers but 10A.

@@emesacolney2756 That bit is fine but you won't get the full power out of it unless it's a 24v input, no matter how big the current capacity is you will still get distortion at high volumes if it's under 18v

@@scellysspeakers thanks, ...... I ordered on amazon and almost arrive, ZK TB21

@@emesacolney2756 I hope you enjoy it when it arrives!

I don't have one, that small woofer was all I had to test with.

£25.99

The 200w most likely is just peak power, i'd expect continuous RMS power to be closer to 150ish watts (37w+37w+75w) since the amplifier is rated for maximum 24v and a bit over 5a.

There, these capacities are almost two times less than those declared as usual by marketing ...

Depending on what power supply and amperage, remove from this RMC 25% and you will get pure power without distortion of the real one in the measurement standard DIN What is real and not RMS for beautiful ciphers

He’s running at half power at 7.83 watts, it’s a scam device with fake lettering. In reality it’s a 20w amp. Having djd for 30 years with a commercial 150 watt amp it would tear those little speakers apart.

Did you connect a very low impedance subwoofer to the amplifier or use it at full volume for a long time? These amplifiers are known to overheat if used at high power for a long time so I suggest using a small fan to keep the heatsink cool.

​@@scellysspeakers slightly, it is a 3 ohm sub. My use will not overheat as only the subwoofer channel is driven hard and most bass songs don't have constant load. I think my fault of mine is using 26 volt power, I used it because it is the max recommended of the Chipstar cs8673e datasheet but it is likely that the board is designed to max at 24volts.😢 It was a slow death as the bass drops, it sounds distorted or electronic and weak until it complete disappeared in 30 seconds.😔 I want to fix it but still can't find the faulty component. I finally made the Line/AUX In in the Aiyima 2.1 amp TPA3116D2 to work. No more issues unlike the ZK-Wuzhi amps! It is more efficient or puts out more sound for the same power, maybe 20-40% more efficient. I was also able to find a PC Equalizer so that bass gets low like the Wuzhi amps. It feels I don't I need to upgrade the 20V, 4.5A power adapter I currently use. It is only $6.68 more expensive than Zk-tb21.

@@zodiacfml Still you ran the device out of spec, that would definitely be the reason. Even if it is only the subwoofer channel, there is an entire chip dedicated to it that will easily burn out if ran improperly. For 3 ohms I would've suggested never going above around 70% volume for the subwoofer channel, which is the point at which the AC current would match the peak of what you'd get at 4 ohms.

​@@scellysspeakers true. it is hard to maintain a safe power output because I listen to youtuber bass music which has all sorts of bass frequencies and gain. I hope to fix the Zk-Tb21 someday though- I will check again once I'm done with other tasks. the subwoofer chip looks fine and the pin resistances seems similar to the other chip. thanks for the replies!🤩🤩

Make sure you use a power supply with very little DC ripple

@@scellysspeakers can u suggest? what kind ?

@@impopio4987 The best case scenario for clean DC power is an appropriately protected battery pack of the correct voltage, but almost any normal power supply of at least 20v should be fine.

TB21 uses genuine Texas Instruments TPA3116D2 amplifier chips and has more filtering circuitry, MT21 uses a Chinese chip and has less filtering.