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| 607 files in 8 albums and 1 categories with 5 comments viewed 2,507,052 times |
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6SN7-6L6-Tube-Amp-3.jpg6SN7 / 6L6 Tube Amp6198 viewsWilliamson front end and phase splitter, with ultralinear output stage. 6SN7, followed by another 6SN7 driving a pair of 6L6.
Tube Amp Schematics: Williamson 6SN7 - 6L6 (KT66) Tube Amplifier
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IMG_1875.JPGriverrat373's K-502 Tube Amplifier Kit - Side3805 viewsSide view of the K-502 Tube Amp Kit.
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Fostex-FE126E-Rear-Loaded-Horn-Speaker.jpgRear Loaded Horn Speaker with Fostex FE126E6936 viewsThis is a diy rear loaded horn (back loaded horn - BLH) speaker that uses the Fostex FE126E fullrange speaker driver.
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BBAmpS.jpgBBAmp (BeBamp) bread board tube amp with no driver stage.1911 viewsI wanted to see if I could drive a SE UL tube power stage from a two stage tube preamp. This bread board amp (BBAmp - BeBamp) was constructed to test the theory. Most bread board amps have the wiring exposed. I wanted this to look and sound excellent so all wiring is underneath the bread board. There are lots of exposed components e.g. rectifier components, but all wiring is hidden. The bread board is Australian pine, sanded and treated with Australian beeswax. Edcor OPTs are enclosed in the aluminum case (back right) which provides a back plate for speaker posts and input RCAs. The amp is absolutely dead quiet and extremely transparent. The amp will produce the sonic signature of your preamp. A high gain preamp and very sensitive speakers are required. This can be shipped as a modular bread board kit amp. The tubes are JJ Blue Glass KT88.
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Class-D-SureElectronics-Amp.jpgClass-D Sure-Electronics Amplifier170 viewsThis is my first DIY Class-D amplifier. The amp is based on a $30 Sure-electronics module. The amplifier modules requires only a 30VDC high current power supply because into 4 ohm it can produce 100Wpc. The enclosure is an off the shelf 2U 19” rack mount type. The power supply has an 18-0-18V, 9A toroidal transformer. A 10A rec bridge, some snubbing caps and 30,000 uF of stage caps make up the power supply. Two selectable inputs provide direct connection to the amp module or connection via an Alp pot and 4 Oz brass knob. Very crisp sounding with good detail... See the forum thread Class D 100W power amp for more information.
Mark Houston – retro-thermionicDec 15, 2014
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Class-D-SureElectronics-Amp-Inside.jpgClass-D Sure-Electronics Amplifier (Inside)177 viewsThis is my first DIY Class-D amplifier. The amp is based on a $30 Sure-electronics module. The amplifier modules requires only a 30VDC high current power supply because into 4 ohm it can produce 100Wpc. The enclosure is an off the shelf 2U 19” rack mount type. The power supply has an 18-0-18V, 9A toroidal transformer. A 10A rec bridge, some snubbing caps and 30,000 uF of stage caps make up the power supply. Two selectable inputs provide direct connection to the amp module or connection via an Alp pot and 4 Oz brass knob. Very crisp sounding with good detail... See the forum thread Class D 100W power amp for more information.
Mark Houston – retro-thermionicDec 15, 2014
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SE-6V6-Amplifier-after-Lacewood.jpgCopy of Matt's SE 6V6 Lacewood amplifier391 viewsHello,
This is my copy of Matt’s (Suncalc) single-ended 6V6 Lacewood amplifier which is actually made from Sri-Lankan Satinwood, Padauk and brass.
Keith Graham Cheltenham, UK.
Oct 03, 2014
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Beyma-12XA30Nd-Speaker.jpgBeyma 12XA30Nd Speaker579 viewsThese are the most expensive speakers I have made. Drivers are Beyma 12” with a titanium\polyester concentric 2” dome – 12XA30Nd. Efficiency is 98db\1W\1M for the woofer section and 105db for the tweeter. The drivers can handle 700W! Box is 33ltr and heavily braced with 4” rear port. Finish is heavily stippled and applied with a roller. Xover is at 2KHz. Bass is not super low and requires a subwoofer for better bass. Speakers work extremely well with my 0.5W 1920s tubed amp. See the forum thread Beyma, a Spanish coaxial driver for more information.
Mark Houston – retro-thermionicSep 25, 2014
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