Nanoo Chip Amplifier (LM3875 Gainclone)

Here is another one of Mark's projects which has been added to DIY Audio Projects website. His latest creation is the compact DIY Nanoo Chip Amplifier (LM3875 Gainclone).

The enclosure for the amplifier is a tiny aluminum box that measures 119 X 94 X 34 mm. The amplifier is based around the popular LM3875 chip using point-to-point wiring. Power to the amplifier is provided via an external power supply which is also housed in an aluminum enclosure.

See the project page for more pictures and information about the Nanoo Chip Amplifier (LM3875 Gainclone) Project.

Related Projects:

• Bruce's LM3875 DIY Chip Amplifier (Gainclone) Kit
• Mark's LM3875 Gainclone Chip Amplifier in a Roasting Pan
• Gio's LM3886 DIY Chipamp Project Kit
  
• Mark's Point to Point LM3875 Gainclone / ChipAmp instructions
• Thomas' TDA2050 Hi-Fi Chip Amplifier (chipamp)

What's Playing: The Church - Metropolis

Class A MOSFET Amplifier

Another one of Mark's projects has been added to the DIY Audio Projects web site. This time, Mark has put together a very simple MOSFET amplifier that he has fashioned after a single-ended (SE) tube amplifier.


The amplifier uses a single MOSFET and the results are a very simple Class A SE amplifier with a low parts count. As with all of Mark's projects, the enclosure work is top notch.


For more information and photographs about this project, see Mark's DIY 2SK1058 Single Ended MOSFET Amplifier Project page.

Related Projects:

• Jochem's DIY 2SK2221 Class A MOSFET Amplifier Project
• Pictures of Michael Edwards DIY Class A Amplifier Project
  
• Pictures of John's DIY Class A Mosfet Amplifier Project
  

What's Playing: Red Rider - Walking the Fine Line

Alex's build of the Fostex FE127E Sealed Bipole

A while back I finished up a DIY Sealed Tower Loudspeaker project using the Fostex FE127E driver. A short time later, I was contacted by Alex in the Philippines who told me that he was constructing this project.


The above picture is Alex's build of the DIY Sealed Bipole Speaker Project using the Fostex FE127E. Alex did a great job constructing the enclosure using MDF for the baffles and solid Narra for the sides. I was very pleased when Alex sent me pictures of his finished project and his positive comments regarding how nice these speakers sound.

For more pictures, see Alex's build log of the DIY Fostex FE127E Sealed Bipole Speaker Project.

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Related DIY Audio Projects:

• Fostex FE127E Sealed Bipole Speaker Project
  
• DIY Fostex FE127E Bass Reflex Bookshelf Speakers
• Zigmahornet Speakers with Fostex FE103E

What's Playing: George Harrison - Cloud Nine

A Case for the K-12M Tube Amplifier

This is Mark's build of the inexpensive and popular S-5 Electronics K-12M Tube Amplifier Kit.

Actually, Mark has built three of these fantastic sounding tube amplifier kits! Mark has experimented quite a bit with these kits and his modifications include snubbers, a beefed up power supply, an upgraded power transformers and Hammond output transformers. I am always impressed with Mark's enclosure skills and look forward to seeing more of his diy audio projects.

For more information about these inexpensive tube amplifier kits, see: S-5 Electronics Tube Amplifier Kits.

Other S-5 Electronics Tube Amplifier Kits:

• S-5 Electronics K-8LS Tube Amplifier Kit
• More Modifications for the K-12M Tube Amplifier Kit
• S-5 Electronics K-12M Tube Amplifier Kit

What's Playing: The Velvet Underground - Sweet Jane