Fosi Audio BT30D - TPA3116D2 2.1 Channel Amplifier (Active & Passive Sub output) 

Hey I've got the same unit, in fact it arrived today..But could you help this newby... do you have to splice the cable, then put them in the banana plugs, or did you just bought the cables connected with the plugs already

@@RobertSpiller I connected the unit to speakers with standard speakers cable directly (without banana plug).

For banana cable which mm i should buy can you tell pls

Will this unit handle 4ohm speakers?

@@1mrdems yes but anything under the amp will get really warm, and on 2 ohms will go into protect

I've tried 2x 6 ohm speakers in parallel. The amp does start to get warm.

@@roberthindle5146 thanks for confirmation. I am really a big fan of these mini amps especially this model

mines running on twwo ohms as the manual says 2ohm-8ohm and it runs cool

Has it arrived? And how'd it go?

@@swingking08 I bought one of these on ebay today, new, from the fosi store: $60

@@jackfrosterton4135 Sweet!!

How's the sound difference with the Dayton Audio? I currently have a DTA-2.1 and I was looking at that Fosi, but it seems like a sidegrade. I understand that you wanted the sub out, but do you find any difference in sound quality between the 2 amps?

@@12chrisrob Sorry about the delayed reply, I apparently don't check my RU-vid notifications often enough. 🙂 There is definitely a sound improvement, the Dayton worked fine, but did not have as much power which I think is noticeable with sound clarity. My DTA1 also started having some issues, I think only one speaker was working. I can probably fix it if I tear it apart and take a look, but for inexpensive as it was, it really wasn't a big deal to replace it.

Are you happy with the result and does it sound good with your speakers?

Hi, i wonder your results

@@AdamSmith-fe9jf i entirely forgot about this comment sorry. i am very impressed and two months after i got it i got a full surround sound av receiver from family and this thing sounded pretty much just as good as a yamaha rx-v530 so yes i am very supprised

dude if it is not; it's name wouldn't be "Master Volume" 😅

@@TheSkysolid Wish it was that simple bud, there is some amps that dont control both volumes when you turn master volume down ive had them.

@@Kings-vs7om master volume does control speakers and sub, the sub volume is to balance the sub volume with the speakers volume.

Is it any good?

Lies

Bluetooth audio quality is mediocre. Power declares is without any indication of impedance so guess what? Probably you will get 50% of specs. Also, it's true device is small, but power supply is a brick 2 times the size of amplifier. I ordered in Amazon and sent it back the next day. I don't recommend this Fosi amplifiers.

@@TIPER2K typically the 3116 amplifier chips output around 18 watts per channel of clean power. The 50 watts claimed is at 10% distortion which is unlistenable. But 18 watts is decent for regular listening. Not quite enough for a party environment.

Yeah man

Yes

no

4 ohms a 8 ohms

How it go?

Yes, it is.

Yes. Tested and confirmed.

@@roberthindle5146 do both units respond to the leftmost dials?

@@hide3reptiles365 Yes they do. I suspect one is just a pre-amped version of the other.

@@roberthindle5146 super.

yes, mine does that.

Turn the volume dial to 0 before turning on.

I buy passive subwoofers from thrift stores for $5-10. They sound great with bookshelf speakers. The extra bass punch makes a huge difference, even if the sub has only a 6" driver. I prefer 8-10" sub drivers, though. They are very common in thrift stores.

@@DanLimbach I think he’s asking about the frequency range of the two speaker outputs. Maybe it only outputs above a certain range. For example above 50Hz

I think that amp would kill the sound of your bookshelf speakers with a sub connected...that review demonstrated a silly weak sound when he turned the sub volume down.

3.5mm to RCA inputs

You need to buy a 3.5 mm to rca cable. It's what I use on this amp.

Me too. And there no any password to connect. Only becouse of this I'm bought Fosi Audio BT20C. There is an similar device "AIYIMA TPA3116" with BT/AUX switch on front panel - unlike in BT20C and other Fosi Audio. Suppose, there is a way to manually solder physical switch on front panel to disable BT.

@@RustamVID the way it's designed, there's no room maybe on the back.

@@TheLukemcdaniel , agree. They must improve their product line with this switch (with reviewing of the case dimensions or composition). Switch on the front panel is preferable.

@@RustamVID I'd be okay with having the volume knob include a button that switched between. Maybe use that for pairing if you hold it down. They make rotary encoders like that

Good variant, there is cheap little chinese amps with it (also built on TPA3116D2, with funny design, but with horrible cases/sizes).

i wonder this aswell

You can do this if your avr has pre outs

Yes bro

no, all outputs are already bridge outputs.

It doesnt

The master volume DOES control the level of the subwoofer!

I have a BT30D and the sub volume IS certainly proportional to the other channels on the main volume.

You have master volume, it adjusts all speakers including sub. The sub volume is to balance the sub volume to you main speaker volume.

Depende del consumo de tus parlantes, este ampli llega a dar 50w por cada salida con una resistencia de 4 homs con 8 ha de dar unos 35

At 1:23 you can see that the aux RCA input is split into a red R in and a white L in. I see no reason why these should get artificially merged in the amplifier, the 3 channels are there and ready.

@@hide3reptiles365 i bought other brand amplifier, which using Bluetooth and 3.5mm aux jack as an input. when i use Bluetooth as the connection, the sound produced by the amplifier will be stereo. but when i use the 3.5mm aux as the connection (with the same sound source), the sound that produced by the amplifier will be mono. the right and the left channels produced the same sound. exactly the same. actually after posting the previous question on the comment section, i bought aiyima A03 with the same chipset with my previous amplifier, but it has same built with this fosi audio. it went good. its RCA input and bluetooth went very good.

oops wrong tab!

I don’t think so but I’m currently waiting to receive a model from them called BL20C which has more wattage per channel and an active sub out only. Might be more what you need.

Yes, I got the BL20C and use with a powered sub which has its own volume and frequency controls. This thing is driving 2 x Jamo E680 speakers with 2x8” woofers, a 3.5” mid and 1” tweeter per speaker. Loads of volume and the bass and treble controls work very nicely.

@@johnpfeffer3933 yep, now that I have mine I can also confirm its a beast. 👍

yes

@@jackwaau I ended up buying a Pyle amp, it has both Bluetooth and cable connectors, so it works with most devises. And those old speakers sound great!

@@estuchedepeluche2212 I assume the Pyle in an op amp model. You may be able to swap out the op amp IC. It's a common upgrade for op amps and worth looking into.

What do you mean it needs a preamp? The volume control is the preamp. It's an integrated amplifier, not a power amp, so it will work with and adjust the amplification level of any line level source such as your phone or CD player. Vinyl is the one exception, you would need a phono preamp if your turntable does not have one built in. If you really want a preamp though, Fosi has options at fosiaudio.com/collections/preamplifier.

@@masonwilde1464 Hi Mr Wild You asked, "What do you mean it needs a preamp?". Well, I was thinking that since this amp only has one set of RCA inputs then connecting a preamp to it, that has three additional RCA input including one for a turntable, would be a good idea. So, that's what I meant by attaching a preamp.

I believe Fosi do have a pre-amp in their range. I'm not sure what market that would fit into though. This product is very good but is really aimed at Spotify/iTunes users rather than a HiFi separates setup. That said, most turntables and other playback devices send pre-amped line-out anyway. Be aware that this only has one line-in.

its not connected on rca.. this sub works on amped subwoofer output. You can't connect a pasive sub on RCA port.. RCA out is for active sub.

@@als-techreview hey, does sub vol and freq change the freq and vol of rca output too, or only the freq and vol of the amp output? I was planning to buy a bt30d and a bt20a, so i would have the 50w x2 for my high efficiency bookshelf stereo on my desk at my pc wich gets really loud even at 5w of power sp 50w would be deafening, and the 100w sub output set at mid-high freq to a speaker/subwoofer i put under a table wich creates high frequency bass of around 60-130hz, which resonates at the corner of the room where my pc setup is really loudly at 5 watts, that thing was insane, and if i play 100hz which is my room resonance frequency it was like 150db and painful way too loud , and put my 250w rms jbl sub in my closet wich creates loud deep bass of around 20-60hz wich id going to be powered by the bt20a bridged creating 200w max, i actually found out by playing with my other speaker/subwoofer which i powered with a 5w bluetooth amplifier and it sounded like a 500w rms car audio, so... , and the speaker/subwoofer is a 30w rms 190w max 5 inch car speaker, all because i put it in my closet lol, the second i open my closet, boom gone, no bass at all. But i have to be able to make it so that the subwoofer under the table is high freq and thr sub low freq, but since im hooking up the bt20a to the bt30d with rca, i need to know if changing the freq options on bt30d will affect the rca output going to the bt30a aswell not just the output of the bt30d, if yes what can i do? Also im kinda new to this stuff so does changing freq change like a range? Like for example 30-60hz to 60-90hz, or does it change like 0hz-30hz, to 0-60hz, which means i could actually use it the way i intended it to by making the bt30d sub high freq going to the speaker under the table and the rca going to the bt20a which i would put a low pass on, or is there something else i could do, like for example instead of the bt20a use an actual subwoofer amp thats 300w rms, but i dont know which one, which is probably what im going to do, but i again need to know if changing the freq to higher will remove the low freqs or just allow higher freq, i could use a splitter but then chaning volume on the bt30d wont affect the sub amp, so help what do i do? Is there something you can buy like a volume/gain knob which splits the cable going into the inouts of the amps? So that way i could control both amps? If yes i might be saved.