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What you just said there made a lot of sense - even thought I am half retarded to this stuff it made sense.
I have figured out that it might be a too big project for me to learn - so I will find a company that can make a solution :) Thanks a lot everyone for the help so far :)
Have a great new...
Well the sound is good now - not sure where the mistake was made, maybe just because I didn't connect a mic and turned up the volume and activated all 3 channels.
Well now I have tested the TL071 and the NE5534, and it do change the sound quality a bit, since I can hear it with my own ears. It...
That's almost impossible for me to get, cause it's different material on the internet, that has been put together :/
I am just not satisfied with how the sound is anymore. I want it to be crystal clear(almost at least). I want a system like now; a microphone on which you can specify what...
Thanks. The power supply is this one(see attached image). It should be able to deliver more than enough power? The volt i currently set to 16 volt.
The voltage regulator is this one: UA7812CKCS (Texas Instruments)
It is supposed to amplify "crying babies / baby noises" and to be totally...
The powersupply is a switch mode (see attached image). I have experienced before that other power supplies made some noise and the I choose this one, cause it seemed like it didn't cause such noise problems.
The speaker unit it self is a small 2.5w.
I got no idea how all that filtering is...
The mic is just attached the circuit with the pre-attached wires on the mic. Maybe I should just change to a better mic, but can you recommend a good mic? :)
Well, I believe that noise is very loud, even thought the mic is not attached. When I attach the mic the noises do not get louder, they...
Hi Klaus,
Can you give me some specific recommendations regarding the audio type electrolytic capacitors and for the non polarized aswell?
Again, can you recommend some specific HF RC Filters? (A brand or something). Thanks a lot for your help :)
That sounds good I will try that then and return with the results. I believe I can have the components on the 5th - so stay tuned :D
I have read that WIMA 100nf capacitors are good for audio is that true? Then I order some of them at same time.
NE5534AP or NE5534P - which one is best?
I want to change anything, that can make the sound better - also the cost of the components doesn't matter much. Well I don't have money for some NASA components :D
There should be room for minor heat sinks.
If it can help out anything I am using this power supply(I experienced that some power...
If I do not connect a microphone, but just turn up the volume on the speaker unit, then the noise appear aswell and everytime I activate 1 more channel the noise gets a lot louder. It's like it is catching some kind of a radio channel sometimes I have a recording, where I can hear a radio...
Thanks a lot for the answer.
I am a 100% sure it is not acoustical feedback, but that do happens, when the microphone is too close to the speaker.
Can you recommend a change for the LM380? Then I will just change the circuit board - I believe that is possible? :)
I am not sure which kind of...
Hi Vbase,
Well it is noisy when 1 channel is active, but it gets 3x worse when all 3 are active at same time. So I believe changing from LM741 to NE5534 will change a lot? But I take any advice, that can improve the sound.
The grounding / earthing is done correctly, but the hum/noisy is still...
Seems like my last message wasen't sent.
Well I would like to change any component to the best ones to achieve the best possible sound quality.
If you can help me and I find the results good I will personally reward you. Send me your email in a private message if you believe you can help me...
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