All Questions
8 questions
0
votes
1
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Rebuilding an Old Transistor Radio into a Bluetooth Speaker
I recently acquired an old transistor radio and I'm interested in transforming it into a Bluetooth speaker. I'm considering using a stereo amplifier kit that includes built-in Bluetooth, such as this ...
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1
vote
2
answers
2k
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Combining two speaker channels (left + and -, right + and -) into a TRS style cable (left, right, common/ground)
I'm currently building a portable stereo speaker and have run into some issues.
The speaker is based on a set of broken Jabra Move headphones (used as bluetooth receiver) and a XH-A232 amplifier board....
0
votes
2
answers
2k
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DIY portable bluetooth speaker; charging/battery question
I'm new to this and i'm doing my first real build for a friend. What I got so far:
Amp: ZK-TB21 Here
BMS 3s 40A balance Here
18 18650 battery on 3S pack
2 x 25W generic speaker and 1x30w tangband ...
- 1
0
votes
0
answers
47
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Making subwoofer for car, without amplifier
So, I have these two things and I want to achive a good subwoofer for my car: an 5.1 home theater system with a 20-30w 4ohm subwoofer and a radio player in my car with 4x45w 4ohm output for speakers.
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0
votes
1
answer
3k
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Identify these components for bluetooth speaker [closed]
I am wanting to make my own DIY bluetooth speaker (first time electronics project) and I have found several good Youtube videos on the topic. However when it comes to finding the actual parts, I am ...
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1
vote
4
answers
11k
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Is there any formula to get number of windings for a 50W voice coil of a speaker?
Is there any formula to calculate number of windings to get a 50 Watts voice coil of a speaker?
let's say, I want to wind a 20mm diameter voice coil for a speaker. And my coil is made out of copper ...
1
vote
3
answers
10k
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50W Amp for 15W Speaker
I am building a portable speaker and I am looking for a decent amp for my two 15W Phillips speakers. It is tough to find an amp that is efficient and cheap so I was wondering if there is something ...
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3
votes
3
answers
19k
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How do I check polarity on loudspeaker?
How do I check the polarity on a loudspeaker?
I have an 8 ohm 2 inch speaker with no wires soldered into it and the terminals have no markings.
How do I know which of the two terminals is positive ...
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