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DIY For Audio
Autona AL125 pcb layout
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<blockquote data-quote="Den123" data-source="post: 1087420" data-attributes="member: 13454"><p>I?ve said it before on this forum: Those AL125 modules were astonishing value for money. Put a big enough PSU in place and they really delivered. Oh. Btw, you do need a good heat sink. I actually modified the duty somewhat. A different concept completely. Outputs were cap coupled being a single rail supply, right? So, cap couple a second cap and speaker to the positive rail. Yes. Weird. I did this while still at school. Keep note of the speaker phasing and cap polarity, double the output stage duty, and the psu capacity, and you could double the power. Hell of a switch on thump though, as the two caps in series with the two speakers charged themselves. </p><p><img class="smilie smilie--emoji" loading="lazy" alt="😊" title="Smiling face with smiling eyes :blush:" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f60a.png" data-shortname=":blush:" /> we had fun. Not bad for a school kid I thought.</p></blockquote><p></p>
[QUOTE="Den123, post: 1087420, member: 13454"] I?ve said it before on this forum: Those AL125 modules were astonishing value for money. Put a big enough PSU in place and they really delivered. Oh. Btw, you do need a good heat sink. I actually modified the duty somewhat. A different concept completely. Outputs were cap coupled being a single rail supply, right? So, cap couple a second cap and speaker to the positive rail. Yes. Weird. I did this while still at school. Keep note of the speaker phasing and cap polarity, double the output stage duty, and the psu capacity, and you could double the power. Hell of a switch on thump though, as the two caps in series with the two speakers charged themselves. 😊 we had fun. Not bad for a school kid I thought. [/QUOTE]
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DIY & Tutorials
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Autona AL125 pcb layout
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