Can the proffieboard run 2 Philips BT3900 speakers?

Proffieboards
1

My proffieboard is used like a “Micom” and only for playing sounds. I have a 18650 battery 3500mah running the board.

My question is: Can I run 2 Philips BT3900 (they have their own batterys) a long time or will the speakers drain battery from the Board?

Speaker specs:

Rated output
power (Amplifier)
4W RMS ≤ 1% THD
Acoustic frequency response 95-20000 Hz
Speaker driver 1 x 2” full range, 4 Ω
Built-in battery Li-polymer battery (3.7 V, 780 mAh)

2

You’re connecting to wireless portable speakers?
Are you using a BlueTooth transmitter with the Proffieboard?
The batteries are unrelated, you’re just sending signal to the speakers.

3

No I am using cables from board to the speakers.

4

Ok so you are sending speaker level signal into a line level input on the powered speakers.
I would think this requires less power since you’re not actually driving a speaker physically, but at minimum I would venture to say there’s not going to be any additional battery drain on the board.

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5

Assuming this works (because Proffieboards have class D amplifiers on the “out”, which is meant to be hooked up to a speaker, not audio-in.) I would expect the proffieboard to run for quite a while. It might draw ~100mA or so while on in a configuration like is. So ~30h on a 3000mAh battery.

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6

Thanks, this information helps alot.

Thanks thanks thanks thanks

:slight_smile:

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