DIY Audio Projects Photo Gallery
 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

DIY Audio Projects Photo Gallery


[ Gallery Home | Upload Photo | Recent Uploads | Most Viewed | Search ]

Click to view full size image

Twinings Tea Box 12AX7 Tube Preamp with External 5Y3 Power Supply

In this build I used the Jensen copper, paper and oil caps for the input, output and inter-stage coupling and Solen Teflon for the feedback capacitor. The preamp is a two stage triode (12AX7s AWA-Australian) with global feedback and is the original Silicon Chip design with some modifications. They are bigger caps all round and no printed cct. brd. Construction of brds. was component-2-component wiring which means there is NO additional wire used on the brd. construction. At the brd. level this is better than point-2-point wiring. This cuts down on soldered connections/junctions and cct. length. All 99.999% pure silver wire with heat shrink insulation is used in the signal path to connect brds. to RCAs and Alps blue velvet pot etc. Medium gauge OFC hook-up wire brings power to the brds. Heavy bituminised Al foil lines the light timber case to provide a ground plain and RFI/EMI shielding. The remote PS employs a 5Y3 rec. tube (Australian made in this case) Hammond 370X power tranni 193B 12H choke.

TeaBoxRearSmall.jpg TeaBoxPreampSmall~0.jpg TeaBoxInsideSmall.jpg JJ-Tesla-Blue-Glass-KT88-Vacuum-Tubes.jpg 2SK1058-SE-Mosfet-Amp.jpg
File information
Filename:TeaBoxInsideSmall.jpg
Album name:Vacuum Tube (Valve) Audio Projects
Filesize:188 KiB
Date added:Aug 10, 2009
Dimensions:640 x 480 pixels
Displayed:2347 times
URL:http://diyaudioprojects.com/Gallery/displayimage.php?pid=445
Favorites:Add to Favorites

DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Opamp Projects :: DIY Phono Projects :: DIY Cable Projects :: HI-Fi Audio Schematics
© diyAudioProjects.com - Terms of Service - Privacy Policy