Monthly Archives: February 2017

Dry Solder Joints

Some parts in a power amp stage get very hot.  The output transistors of course but also some of the resistors in the output stage.  After years and decades of getting very hot and then cooling and running through this … Continue reading

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Pioneer SX-5580 Power Amp Module

Here are some photos of the power amplifier module.  As you can see, it’s big.  But then it would be at 120 watts per channel RMS. This is before cleaning and changing of the electrolytic capacitors.  Given heat, electricity (generating … Continue reading

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Pioneer SX-5580 Receiver Refurb

Here is what I’m working on at the moment, a Pioneer SX-5580 monster receiver (amplifier with built in tuner).  As far as I’m aware, it is identical to the SX-1050 but is in black instead of all aluminium. This photo … Continue reading

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High Resolution Audio, MQA and Others

Not sure where to start with this post. I suppose I should just ramble on… CD audio was a little short of musical quality and has been bemoaned ever since its introduction pretty much. By anyone who likes quality above … Continue reading

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DXF v SVG files – What he said!

I had problems with exporting files so the laser cutter company can understand them and they are accurate.  The reason behind it is me using the free, open source software Inkpad (and my lack of knowledge in this area).  It’s a … Continue reading

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Connections Conundrum

I spoke in my last post about needing to find connectors to link the wires between the amp PCB and the outputs.  I just spent the whole day looking at the web sites of RS Components, Farnell, Maplin and eBay. … Continue reading

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Dimension Number Crunching

Dimensions for laser cutting. Continue reading

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