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How can you connect new BT 4.2 WTS audio receiver module with TPA3118 mono noiseless
How can you connect new BT 4.2 WTS audio receiver module with TPA3118 mono noiseless
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Old 12th July 2018, 09:14 AM   #11
IVX is offline IVX  Ukraine
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For your IC external DAC only, in my case of 100% digital amp(TAS5558+TAS5624) I2S is no problem. I using cheap BTM625 modules $4 with I2S and TWS. BTM625/CSRA64215??4.2??????I2S??/TWS/aptx-ll-???
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Old 12th July 2018, 09:46 AM   #12
oxl is offline oxl  Denmark
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I like the BT module you use, but the DA is too big. Size is critical and I need a 50w mono DA with very small dimensions (it does not have to be TPA3118).

Is there such a small, compact 50w mono DA with I2S ?

Then, how do you connect the BT to that DA ?

I found this: The new TWS has a bluetooth hifi amplifier for bluetooth CSR4.2 amplifier-in FM Transmitters from Automobiles & Motorcycles on Aliexpress.com | Alibaba Group

But even this is too big, only 2x25w and I don't need stereo board

Last edited by oxl; 12th July 2018 at 09:50 AM.
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Old 12th July 2018, 04:47 PM   #13
IVX is offline IVX  Ukraine
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haha, it is funny, I proud that my HiFi-TOY(complete Amp+SMPS 115Wx2ch@20Hz@THD=1%, USB Hi-res input, BT stream input, IOS/Android application DSP control, PCB 127x100mm) is the smallest amp ever but you need even smaller? )) STA350BW is the I2S input amp but the sound quality, in my opinion, is 100% shameful.
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Last edited by IVX; 12th July 2018 at 04:53 PM.
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Old 13th July 2018, 02:36 PM   #14
oxl is offline oxl  Denmark
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OK, so I2S is not possible in my case. How would you then connect your BTM625 to mono TPA3118 ? Do you use any breakout board for the BTM625 ?
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Old 13th July 2018, 03:38 PM   #15
oxl is offline oxl  Denmark
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Values in this example ?
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Old 14th July 2018, 03:55 AM   #16
IVX is offline IVX  Ukraine
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To connect your BTM625 to mono TPA3118 I would use something like CS4344.
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Old 14th July 2018, 08:08 PM   #17
oxl is offline oxl  Denmark
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Quote:
Originally Posted by IVX View Post
To connect your BTM625 to mono TPA3118 I would use something like CS4344.
How ?
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Old 14th July 2018, 10:32 PM   #18
doctormord is offline doctormord  Germany
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The CSR64A215 does have DACs integrated and can function as a I2S-DAC bridge even with samplerate conversion. But you’ll need to have a programmer for configuration. Maybe it’s better to get something like:

Aiyima CSRA64215 4.0 4.2 Bluetooth APTXLL Amplifier Board 2x30W TPA3118 Audio Amplifier Board For 8Ohm Speaker-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group
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Old 15th July 2018, 03:08 AM   #19
IVX is offline IVX  Ukraine
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Quote:
Originally Posted by oxl View Post
How ?
It's is very simple, actually. Just tie all I2S wires accordingly, and add oscillator, see my schematic above. However, if such things are difficult to you, better buy something as doctormord recommended
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Old 15th July 2018, 07:07 PM   #20
oxl is offline oxl  Denmark
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But the Sanwu TPA3118 PBTL 60w mono does not have I2S ?
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