| Random files - DIY Audio Projects |
Bottlehead-Seduction-Phono-Preamp-Top.jpgFinished Bottlehead Seduction Tube Phono Preamp3804 viewsA finished view of the Bottlehead Seduction Tube Phono Preamp kit.
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DIY-Three-Way-Tower-HiVi-Loudspeakers.JPGDIY Three Way Tower HiVi Loudspeakers6844 viewsThese are David's version of the DIY 3-Way HiVi Tower Loudspeakers by Adam. Each of the three-way tower loudspeakers uses one HiVi F8 woofer, two HiVi F5 mid-woofers and a HiVi RT1C-A Planar Isodynamic Tweeter. The tower loudspeakers follow the plans for Adam's build with the exception that a HiVi Research RT1C-A is used in place of the HiVi SD1.1A.
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12AX7-Tube-Preamp-Kti-Enclosure.jpg12AX7 Tube Preamplifier Kit2797 viewsA finished photos of the 12AX7 Tube Preamplifier Kit. The volume control is an Alps pot salvaged from an old Sony amp. I added a second input and switch to allow multiple inputs. There is also a second out for a subwoofer.
The preamp is dead quiet and the sound is far more than I had hoped for. My spouse was skeptical, shall we say. But when she heard familiar music she was hearing things never heard before and the bass was thicker and richer. I heard a much bigger sound stage, sparkling highs. Very impressive. Thanks to Bruce Heran for all his help with this project.
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K_16LS_Tube_Amp_Kit_with_PL_Preamp_Kit.jpgK-16LS Tube Amp Kit with PL Tube Preamp6968 viewsAfter months of looking I finally decided on the S-5 Electronics K-16LS stereo tube amplifier kit together with its sister PL tube preamplifier kit. The Stereo Integrated Tube Amplifier produces up to 16W and utilizes 5670 triode and 6005 pentode tubes. The PL tube preamp kit uses a 5670 triode tube.
I ditched the supplied wood board for a larger board to accommodate the preamp. Using my IPod and a set of Celestion floorstanders (90dB) I sat back to listen. WOW - seriously loud. Bass is fantastic, treble is sharp. Mid range seems to be missing a bit but after trying different tracks I am putting this down to poor quality source MP3 via the IPod. There is a reasonable amount of hum when you take the volume up but nothing annoying.
Next step is to attempt the mods for the K-12 kits.
David - UK
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| Last additions - DIY Audio Projects |
DIY-6AS7-Tube-Headphone-Amplifier.jpgDIY 6AS7 Tube Headphone Amplifier4279 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 amplifier3328 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 Amplifiers3417 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 Amplifier2801 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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