Hi there all
My name is James and im new to DIYaudio, i thought id share my first attempt at a kit amplifier on this great forum
I'm a couple newbie when it comes to building audio but have a fair knowledge in hi-end hi-fi (my brother is a buff, runs a pair of Tannoy SR840 monoblocks and Tannoy definition D700 main speakers) in his main system.
I'm an computer aided electrical engineer by day and did a bit of electronics when i was younger.....about 18 years ago.
I decided after seeing all the el-cheapo fleabay amplifier kits to have a go at making my own quad/naim/le monstre clone with a huge power supply, (63v, 15,000mf caps are so cheap on fleabay, ive got 8 now!!!), i let my bro know about my idea and he said you can finish my Velleman K4020 kit i bought 12 years ago first, 2 days later i was the proud owner of an amplifier case, 2 half finished PCB boards, 2 finished power meter boards and a box of bits.
The kit was complete apart from some transistor shims, and a few reservoir caps which i picked up for cheap on the 'bay.
Over the last couple of weeks i have put the amp back together, and to the shock of my brother (and myself!!!) the amp worked first time, apart from a bit of magic smoke from a resistor due to a solder short on one the power meter boards, It even sounds really good and will be plumbed into my home cinema system to drive my main speakers when i get chance.
I'm going to have a go shortly at a none' kit amplifier maybe using the boards off ebay and my own design case and power supply, ive robbed a 3U rack from work so im part way there.
I have all the Velleman diagrams, parts lists and board layouts for the amplifier and power meter circuits if anyone would like scans, (if velleman/board rules dont mind) and my kit was the last revision with all the final modifications.
Thanks for reading
James
My name is James and im new to DIYaudio, i thought id share my first attempt at a kit amplifier on this great forum
I'm a couple newbie when it comes to building audio but have a fair knowledge in hi-end hi-fi (my brother is a buff, runs a pair of Tannoy SR840 monoblocks and Tannoy definition D700 main speakers) in his main system.
I'm an computer aided electrical engineer by day and did a bit of electronics when i was younger.....about 18 years ago.
I decided after seeing all the el-cheapo fleabay amplifier kits to have a go at making my own quad/naim/le monstre clone with a huge power supply, (63v, 15,000mf caps are so cheap on fleabay, ive got 8 now!!!), i let my bro know about my idea and he said you can finish my Velleman K4020 kit i bought 12 years ago first, 2 days later i was the proud owner of an amplifier case, 2 half finished PCB boards, 2 finished power meter boards and a box of bits.
The kit was complete apart from some transistor shims, and a few reservoir caps which i picked up for cheap on the 'bay.
Over the last couple of weeks i have put the amp back together, and to the shock of my brother (and myself!!!) the amp worked first time, apart from a bit of magic smoke from a resistor due to a solder short on one the power meter boards, It even sounds really good and will be plumbed into my home cinema system to drive my main speakers when i get chance.
I'm going to have a go shortly at a none' kit amplifier maybe using the boards off ebay and my own design case and power supply, ive robbed a 3U rack from work so im part way there.
I have all the Velleman diagrams, parts lists and board layouts for the amplifier and power meter circuits if anyone would like scans, (if velleman/board rules dont mind) and my kit was the last revision with all the final modifications.
Thanks for reading
James
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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