| Random files - DIY Audio Projects |
12AX7-Golden-Dragon-Valve-PreAmp.jpgTube Preamp with Golden Dragon 12AX73125 viewsThis is a 12AX7 Tube preamp kit with many upgraded components. The tube is a Golden Dragon 12AX7. The capacitors are Sprague "Orange Drops".
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K-8LS-Tube-Amplifier-Schematic.pngS-5 Electronics K-8LS Tube Amplifier Kit Schematic4176 viewsSchematic for S-5 Electronics K-8LS Tube Amplifier Kit.
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KT88-Single-Ended-Tube-Amp.jpgKT88 Single Ended Tube Amp - Inside View1483 viewsInside view of my KT88 Single Ended Tube Amplifier projct. The circuit is just like Mikael Abdellah's Single Ended (SE) KT88 Tube Amplifier.
For the power supply I used some UF5408 diodes for the B+ and 6A10 for the heaters (they are on a heat sink as they dissipate a lot of power). Bypass capacitors for the driver stage are Rubycon ZL and for the power stage Nichicon. The B+ is lower to improve tube life.
More information and pictures are available on my build log: SE KT88 Tube Amp.
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KT88-Push-Pull-Tube-Amplifier-Cover.jpgKT88 Push-Pull Tube Amplifier (monoblock)933 viewsThe third of the "OddWatt" tube amp projects. This one is the Odd Blocks which will work with a number of octal tubes (KT77, 6CA7, EL34, 6L6GC, KT88, KT90, 6550). The driver stage is an SRPP using a 12SL7 tube. For the amp shown above, the output stage is a Class A UL SIPP using Gold Lion KT88 vacuum tubes. LM317 Regulators are used to provide the cathode CCS.
For more information, see the 12SL7 SRPP / KT88 Push-Pull DIY Tube Amp project page.
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| Last additions - DIY Audio Projects |
PinotAssembleIISS.jpg6AS7 SET amplifier with JAN 5R4 rectifier tube10 viewsThis compact amp is based on an 6AS7 (dual triode), JAN 5R4 (both coke bottle) and 12AX7 driver tube. The top plated is sprayed to match the Edcor OPTs (1.7k/8ohm). The base is solid Mirbeu. Power transformer is Hammond and so is the choke. Component-2-component wiring with no PCB. Silver wire connects gold RCAs to the driver tube. Jensen (0.22uf 630V) copper paper and oil caps join the driver and power stages. The 6AS7 are pushed to 13W dissipation. Bass is heavy and extended, mids and treble highly detailed and sound stage very deep and defined. An extremely good looking and great sounding amp.
Additional information is available in the 6AS7 tube amp from layout to listening forum thread.Jul 26, 2010
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tube_amplifier.jpg5692 / 8417 SE Tube Amplifier50 viewsThis amplifier was built to reproduce music playback with high fidelity. The sound is light and natural. One doesn't get tired of listening to it for many hours. The voice sounds softly and naturally without tension. The amplifier has great microdynamics. The preamp is built based on tube 5692. The power amplifier uses tubes 8417. The tubes can be replaced with different ones: 6L6, 6L6GC, KT88, 6V6 and alike. In this case, the current of the output tubes can be tuned. The output transformers are Hashimoto HC-507U 5K. For more pictures, please visit http://alexkap.comJul 17, 2010
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ZCA_1~1.jpgRadoslav's ZCA (SE class-A mosfet amp)60 viewsRadoslav's ZCA. It has a massive PS with nearly 68,000uf of filtering and a twin secondary tranni.
Schematic and details are availabe from the project page: DIY Class-A 2SK1058 MOSFET Amplifier.Jul 11, 2010
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ZCA_2.jpgRadoslav's ZCA (SE class-A mosfet amp) 76 viewsRadoslav has made a very professional looking build of the ZCA.
See the project page, DIY Class-A 2SK1058 MOSFET Amplifier for the schematic.Jul 11, 2010
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