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| 614 files in 8 albums and 1 categories with 5 comments viewed 3,693,345 times |
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DIY-2SK1058-Mosfet-Amp-Inside.JPG2SK1058 Mosfet Amplifier - Inside10481 viewsSergiy Makharchuk build of Mark's simple DIY Class A 2SK1058 Mosfet Amp Project. Here Sergiy has used light bulbs in place of the load resistor. The enclosure is recycled from an old piece of physiotherapy equipment.
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K-16LS-Tube-Amplifier-Kit-Hammond-OPT.jpgK-16LS Tube Amp Kit with Hammond OPT7642 viewsAndy's son put also together a K-16LS Tube amplifier kit with the additional tone control preamp section. He used Hammond Output Transformers in place of the ones which came with the kit. See see his Andy's webpage for more photos and information.
Also, additional information about the S-5 kits is available at the Tube Amplifier Kit page.
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Single-Ended-300B-Tube-Amp-MockupIIs.jpgSingle-Ended 300B Tube Amplifier - Mockup IIs3389 viewsThis is my first 300B tube amplifier. The power supply will be separate from the amp. The tubes are $1200 rrp TJ Full Music 300B/SE carbon plates. The 6SN7 is a 50 year Treasure. The audio output transformers are 30W Hammonds. The base is Mirbeau and the top and bottom plates are 2mm thick aluminum. Signal wiring is 0.7mm pure silver wire and super heavy gold plated speaker binding posts.
For the design information see the 300B SET Design Project thread on the forum.
Mark Houston (Australia) - retro-thermionic
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S-5-Electronics-K-16LS-kit-enclosure.jpg4390 viewsI'm running this stock apart from the Alps Blue volume pot which I upgraded after the original sprang a leak. I'm using quite a few components bought from: http://www.mafaudio.com/pro/propage.aspx.
There are seven LED's that light up the feet and fronts of the brushed aluminum transformer cases. The LED's are powered from a 12v mains transformer bought from Maplin in the UK. The VU meters also run from the extra transformer. The chassis is made from wood bought from the local yard. To cut the VU meter holes I used a 32mm Spade bit then used a file to open the hole up to just under 34mm. The main volume control area was drilled using a 50mm Forstner bit and the tone controls a 30mm Forstner bit. It's coated in about 5-6 coats of clear varnish and involved an awful amount of sanding.
There are more photos available in my photo library.
Luke Collings,
Wiltshire, UK
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DIY-6AS7-Tube-Headphone-Amplifier.jpgDIY 6AS7 Tube Headphone Amplifier6672 viewsMy name is Laurie. I have been building and DIYing for 45 years now and happily will never stop. This tube headphone amp is from a thread in the Form.
The power connecting cable comes from a European Travel Iron I bought for $1.00 at junk shop. (220v/6A) They will be shortened when I find a perch for the amp and me. The sound is better than my ears have ever heard so I will be keeping this one for my retirement entertainment should such a time ever come. Wink It has worked from day one and continues to please me every time it is turned on. The tubes are JJ ECC88 / 6AS7 with a 5V4 rectifier tube. To spite it's small size the parts are quite easily accessed. I over built most components so it will outlast me I fear. The only change I anticipate may be the 6AS7 to a bottle neck glass to match the rectifier tube. I do have and use a 6080 tube, but i can tell no difference in sound. It will take more then a few hours of listening to get my ears better tuned.Feb 28, 2017
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4-channel-400W-amplifier.jpg 4 channel, 400 W amplifier5321 viewsThis 4-channel 400 W amplifier uses Hypex UcD400HG modules together with the corresponding power supply.
The whole is mounted inside a Galaxy 330 x 230 x 80 case.
For building instructions, have a look at this project's wiki.
Two such amplifiers has been working for over 2 years in my lounge, driving Linn Komponent 110 loudspeakers which each have 4 speaker inputs.
Francois Corthay - Switzerland
Project Page: 4 channel 400 W amplifier using Hypex UcD400HG modules Dec 20, 2015
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E88CC-SV83-SET-Amplifiers.jpgDual SV83 SET Amplifiers5490 viewsA mirrored pair of SET amplifiers, presently being used in bridged mode. All P2P construction using silver solder. I included a "Hazen grid" capacitor and input tube bias change switch. The single mA meter displays individual output tube bias current with a Left/Right switch. Edcor XPRW178 power transformer and GXSE10-6-8K output transformers. Upgraded caps to Jantzen Audio 1200V Z-Superior. Upgraded resistors to PRP PR9372 Audio for metal film and TAKMAN REX for carbon film. ALPS Blue 100K attenuator. The power supply uses a RCA 5U4GB rectifier and Hammond 156R choke. Matched pairs of Svetlana SV83 for power and JJ E88CC for the input tube.
Billy Whiten - Georgia, USADec 20, 2015
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6V6-Push-Pull-Amplifier.jpgPush-Pull (PP) 6V6GT Tube Amplifier4515 viewsThis 6V6 amp was built following the DIY Push-Pull (PP) 6V6 / 6V6GT Tube Amplifier Schematic. Power Supply transformer and Output transformers are handmade in Argentina by NavasBaccino. I'd like to thank Brad S. for the help. The sound is amazing and clear, free of distortion.
Gabriel Rofrano, ARGENTINA
Video link
Dec 20, 2015
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