Other DIY Audio Projects |
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K-12M Tube Amp - First Listen1361 viewsThis is my first listen with a K-12M Tube Amp Kit. The source is a NAD C542 cd player, with 3 way 12" 92dB efficient speakers and Transparent 200 interconnect cables. A cool way to get into valve amps. I lost 1000 hours here!
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Two inexpensive Velleman kits1360 viewsA preamp & amplifier kit that I'm going to combine to make a small integrated amp.
The preamp has volume and separate bass & treble controls.
The amplifier uses a TDA1521 IC.
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Gio's Two Channel Hi-Fi Setup1543 viewsThis is my current 2-channel setup. NAD C521 CD player, NAD C162 preamp, DIY 50EH5 Tube Amp which drives Radio Shack 40-1310 Super Tweeters) and LM3886 Chip Amplifier (Gainclone) which drives a pair of BD-Pipes with Radio Shack 40-1197 drivers. The small box on the bottom right is a Slim Devices Squeezebox.
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Lundahl transformer step-up project for MM cartridge.1617 viewsI recently upgraded my Raga Planar 3 with a Grado wood bodied Platinum reference cartridge. But output was low from the Pro-Ject SE phono preamp. LL1550 trannies supplied by K & K Audio and printed circuit boards allowed me to build a step-up kit in the wooden box the Grado cartridge came in. Compact and beautiful! For more information, see DIY Lundahl MM Phono Step-Up Transformers.
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Inside the Step-up tranni box for MM cartridge1693 viewsThe inside of the box is lined with sticky bituminised-aluminum foil and speaker dampening vinyl. Pure silver wire, gold connectors and silver solder are used throughout. Velcro pads hold the transformers in place. The step-up transformers are wired for 6 dB gain. For more information, see my project write-up on the DIY Lundahl Moving Magnet Phono Step-Up Transformers.
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Melbourne Audio Club - Preamp Comparison Night1860 viewsAt the May GM of the Club we did a blind A/B comparison between my 12AX7 Tube Preamp and OP Amp Preamp while the rest of the gear remained unchanged. No member knew whether he was listing to the valve or chip preamp, just A or B. Two similar tracks was played from a wide range of music styles the first track on one preamp and the second track on the other. The members voted 60/40 in favor of the chip preamp.
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DIY Loudspeaker Feet Instructions1907 viewsHere are DIY instructions to construct feet for returning loudspeakers to the exact same position. Here is a link to a photograph of the finished DIY Loudspeaker Feet.
Much regards,
Guus Das.
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DIY Phono Turntable2196 viewsDo-It-Yourself (DIY) phono turntable. I used MDF filled with concrete / latex added to mix then veneered with Quilted Maple. The bearing is High grade SS and the cup is made of Oilite. The spikes are 2 piece with a rubber damper inside. The Motor is powered by a UPS battery enclosed in the small matching box.
Doug M
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DIY Turntable Project1791 viewsDIY turntable project. I used MDF filled with concrete / latex added to mix then veneered with Quilted Maple. The bearing is High grade SS and the cup is made of Oilite. The spikes are 2 piece with a rubber damper inside. The Motor is powered by a UPS battery enclosed in the small matching box.
Doug M
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DIY Phono Turntable Project1944 viewsI used MDF filled with concrete / latex added to mix then veneered with Quilted Maple. The bearing is High grade SS and the cup is made of Oilite. The spikes are 2 piece with a rubber damper inside. The Motor is powered by a UPS battery enclosed in the small matching box.
Doug M
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Sansui AU-X11 (rare)1304 viewsThe Melbourne Audio Club Australia has many talented members. Some sell commercially, all over the world, there own brands others DIY for themselves while still others take it on themselves to restore "better" commercial units. This member has restored this (I'm told) rare Sansui AU-X11. It certainly looks impressive.
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DIY Loudspeaker Feet583 viewsThis is a photo of my loudspeaker feet project. For instructions on how to build the loudspeaker feet, see the DIY Loudspeaker Feet Instructions in PDF.
Much regards,
Guus Das.
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