I think I got it sounding better. Thank you to Brian, who commented on the previous video with his suggestion on how this can be made to sound some-what decent. Appriciated.
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https://www.youtube.com/watch?v=OufUD2n38J8
Project no. 10 in the Jaycar Short Circuits 2 series: a two station intercom.
Kit: https://www.jaycar.com.au/short-circuits-two-project-beam-me-up-scotty-simple-intercom/p/KJ8218?pos=2&queryId=549bd635951609e5d972c230f83016e4
Short Circuits 2 eBook PDF: https://www.jaycar.com.au/medias/sys_master/root/hb7/h46/8884452786206/BJ8504-ShortCircuits-2-310316.pdf
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https://www.youtube.com/watch?v=ERxD2HhAs5w
In this video, I go through the steps to safely test a built/rebuilt/problematic amplifier without blowing stuff up.
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https://www.youtube.com/watch?v=sPUFcQ_8uDA
In this video, I open up the Belcat 25B bass amp and take a peek inside it.
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https://www.youtube.com/watch?v=nPqLrwJhaho
Well, I found the real issue, and it's kind of a bad one. It turns out this is a Class-G amplifier, as it uses power rail switching. The TA2030 is a switching and comparator IC which switches the TA2040 output IC between two sets of output transistors, one on the +/-34V rails, and another on the +/-65V rails. Class-G just improves efficiency in power consumption with their Class-AB counterparts.
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https://www.youtube.com/watch?v=0q88U-6mbak
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https://www.youtube.com/watch?v=sWwrWxcJfGg
I think the user manual for this on its specifications lies. Or, I'm confused. You be the judge. If the engineer of this thing sees this video, please, feel free to explain how your circuit is supposed to work.
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https://www.youtube.com/watch?v=fROdP5l3Lvc
This one was kind of a disaster. An important component was missing, the 32.768kHz crystal and a PCB corner was broken (probably in transit). However, I did get it to work... to a point.
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https://www.youtube.com/watch?v=EKHOSpW1eko
The brand-new PCBs have turned up. Let's assemble it!
Link to the PCB: https://www.pcbway.com/project/shareproject/_15V_12V_Regulated_Power_Supply_40896b53.html
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https://www.youtube.com/watch?v=buCCGII_CdA