Tag Archives: power

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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Construction Starts

Construction of the first Bluetooth Portable HiFi has started.  I am working on the power supply build. The photos above show the banks of power supply capacitors, one for the positive rail and the other for the negative.  They are … Continue reading

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PCB Tested and Working

Amplifier PCB tested and working. Continue reading

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Amp Testing & Bias Setting

The amplifier is now being tested and the bias set from the driver stage.  I am using an LM4702B to drive the 2SK1058 / 2SJ162 MOSFET output stage.  These devices will have a bias of 115mA to take them just into … Continue reading

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A Henry Audio DAC is on its way!

Well, I just bit the bullet and ordered a Henry Audio DAC from http://www.henryaudio.com/. The review from HiFi+ can be found here: http://www.hifiplus.com/articles/henry-audio-usb-128-mk-ii-dac/ With so much over-priced snake-oil (or bollocks – to use the english term) on the market, it … Continue reading

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The Ripple Effect Continues

The schematic for the Amplifier Board, using the application Kicad, is now finished. It’s a complicated collection of applications, one to layout the circuit, another to layout the PCB, another to create the Gerber files – whatever they are, I’m … Continue reading

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Creating a Stock Control System

In preparation for building the Lab Power Supply Unit I need to know what components to order. So I am currently creating a Stock Control System. That has meant updating all my circuit diagrams and component listings. Just in case … Continue reading

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