Chipamp, Gainclone, T-Amp and Opamp Projects
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Nanoo-LM3875-Gainclone.jpgNanoo - LM3875 Gainclone1891 viewsVery compact LM3875 chipamp with external power supply.
See the Nanoo LM3875 Gainclone Project page for more information.
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LM3875-Monoblock-Amps.JPGLM3875 Chip Amp Monoblock Amplifiers2614 viewsChip amp monoblock amplifiers based on a retro look and the LM3875 chip.
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LM3875-Chipamp-Enclosure.jpgLM3875 Chipamp Enclosure2418 viewsThis is my LM3875 DIY Chipamp / Gainclone . Please see the other pictures for more details.
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LM3875-Gainclone-Breadboard.jpgLM3875 Gainclone on Breadboard2470 viewsLM3875 Gainclone. The circuit is the same as Mark's LM3875 Gainclone. Most of the parts are from Dick Smith which can also be found at Radio Shack.
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Finished-LM3875-Gainclone.jpgFinished LM3875 Gainclone Enclosure2184 viewsThe finished enclosure for my LM3875 Gainclone. The enclosure is from Jaycar and was $15. See the other pictures for more info.
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LM3875-Gainclone-Protoboard.jpgDIY LM3875 Gainclone on Protoboard3272 viewsAnother view of the LM3875 Gainclone on a Protoboard. The schematic is the same as Mark's DIY LM3875 Gainclone project. All of the parts (except the chip) are from Dick Smith and can also be found at Radio Shack in the US.
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LM3875-Gainclone-Enclosure.jpgLM3875 Gainclone Enclosure4094 viewsFinal shot of my DIY Gainclone project.
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Finished-AMP6-T-Amp-Front.jpgAMP6 T-Amp (Class-T) - Front2532 viewsFront view of finished DIY AMP6 T-Amp kit.
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AMP6-T-Amp-PCB.jpgClass T Amplifier PCB (AMP6)4239 viewsAmpilifer module of Class T AMP6. More details are available at the AMP6 T-Amp page.
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AMP6-T-Amp-Kit-Parts.jpgAMP6 Kit from 41hz.com3716 viewsThe AMP6 kit from 41hz.com. See the project page for my experience with the DIY AMP6 kit.
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Underside-AMP6-Tripath.jpgUnderside View of Finished T-Amp Kit 3631 viewsHere is a view from the underside. The large transformer was salvaged from a dead computer UPS. For more details, see the DIY T-Amp project page.
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Finished-AMP6-T-Amp-Back.jpgRear View - DIY Class-T (T-Amp) Kit2479 viewsHere is a rear view of the DIY AMP6 T-Amp kit.
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PreAmp.JPGOPA2134 based preamp with balance control.3118 viewsWith the case work complete it will not be long before this OP based preamp is singing along. The case is small about 115 X 85 and cast aluminum. Gain is 3 dB and a balance control has been included. Full details for this project are available at: DIY OPA2134 Preamplifier Project.
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SV100870.JPGOP Amp Preamp - from the rear2431 viewsFrom the rear of the case you can see the power connection (for 18V 1.2A regulated wall wart) gold output and input connections. More information for this diy audio project is available at the DIY OPA2134 Preamp Project page.
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FinishedInide.JPGOP Amp Preamp - inside the case2863 viewsOn the test bench for a short run-in period. The lids off waiting for smoke. No smoke but on the first start there was a minor fault. I have been listening to the preamp for two hours now and found it adds nothing to the sound (as a preamp should) and extends control with volume and balance adjustment. The yellow caps are 0.47 uF polypropylene metal film. Full details are available for this project at: DIY Op Amp based Preamplifier Project.
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00097.jpgEI Trans and rectifier1914 viewsStill in the building process, the EI transformer (24VCT @ 6amps) and the rectifiers (MUR860 diodes) and two 10000uF caps.
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00095.jpgMaking the chassis, rear view1722 viewsPutting together the plastic and the metal, rear view.
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00094.jpgRectifier capacitors1722 viewsWired with the resistors, smaller caps and a cooper cable extension to make easier the soldering and assembly.
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00003.jpgCustom PCB1693 viewsI know... its not a printed circuit board... because its not printed... but i made it with love.
You can see the rear of the LM3886 and the power cables.
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00002.jpgCustom PCB1536 viewsFront of the LM3886 and power cables, the rest of the cables needed to make a star ground where much more thinner (single wire).
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