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 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

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Fostex-FX120-Bass-Reflex.jpg
Fostex-FX120-Bass-Reflex.jpgFostex FX120 in Bass Reflex Speaker Box11807 viewsThe front baffle is MDF and you can see the deep piano gloss finish on the curved enclosure. The grill is held in place with magnets and is included with the cabinet. See the Fostex FX120 DIY Bass Reflex Bookshelf Speakers page for more information.Jan 01, 2008
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Fostex-FX120-BR.jpgFostex FX120 in Bass Reflex Enclsoure9142 viewsHere is a front and rear view of the finished Fostex FX120 Bass Reflex Bookshelf Speakers. The cabinet size is about 0.38 ft^3 and tunned to about 63 Hz. See the page for more information.Jan 01, 2008
Fostex-FX120-Baffle.jpg
Fostex-FX120-Baffle.jpgFostex FX120 Drivers on Baffle9449 viewsFostex FX120 Fullrange Drivers mounted on the 1" thick MDF Baffle that came with the prefab cabinets.Jan 01, 2008
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IMG_3492.jpgTesting of active crossover3732 viewsThe active crossover is using Rod Elliot's P09 design and is 24db/octave Linkwitz-Riley crossed at 3500Hz. Op amps are cheap TL072 and the sound is still great. Transients are not lost whatsoever.Dec 30, 2007
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IMG_3497.jpgQuad-channel LM3875 Gainclone3665 viewsCrammed 4 LM3875 DIY Gainclone amps into this little box using 2-tiered setup.Dec 30, 2007
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IMG_3498.jpgFinal active crossover + gainclone setup3172 viewsBurning the 4-channel DIY Gainclone and active crossover. I think this is the greatest sound quality improvement, especially for $50 active crossover. There is still hum from the new pair which I need to troubleshoot. Dec 30, 2007
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WFR-20_1.jpgSangean internet table radio2534 viewsReally neat & nice sounding internet table radio. Works with a direct LAN connection or wifi. You have access to over 6000 internet stations sorted in a Genre or by Country list. Has a line out so you can hook it up to your stereo, or play songs stored on your PC.Dec 20, 2007
ClubSpeakers.jpg
ClubSpeakers.jpgMelbourne Audio Club December meeting 200711632 viewsDIY night is traditionally held the last meeting of the year. Not only was there a varied array of DIY speakers there was also amps and cables and processing gear. My equipment (Synergy) was demonstrated through the big light coloured boxes which sounded commanding in the large meeting room.Dec 19, 2007
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Club191207.jpgLast Audio Club Meet for 2007 - Melbourne, Australia2377 viewsTaken with a camera phone the Melbourne Audio Club last meet of the 2007 year is DIY night. You can tell by the array of equipment there was plenty of participants. A Great night.Dec 19, 2007
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BillsAmps.JPGBills Cymer valve monoblocks2881 viewsThese valve monoblocks deliver as well as they look. The sound from the complete system was natural and authoritative. Expensive but nice.....Dec 16, 2007
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BillsSetUp.JPGBills beautiful gear3366 viewsBill, an audio club member, held an afternoon of beautiful and varied music compliments of his valve based equipment. Valve Cymer monoblocks (bottom), passive preamp, Hydra power conditioner and separate DAC and transport. The speakers are local made but have been heavily modified with external Xovers. Truly magnificent sound.Dec 16, 2007
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IMG_1479.JPGChassis and plastic3020 viewsBending the plastic was a pain, i did it with a hair dryer and a LOT of patience... i don't recommend you to try to do it, it takes a lot of effort and time.Dec 15, 2007
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IMG_1480.JPGMaking the chassis, bottom view3000 viewsHere are the two pieces that make the chassis put together. Bottom view.Dec 15, 2007
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IMG_1412.JPGAluminium and mate3070 viewsThe aluminum sheets used for the dissipater and a "Mate".
"Mate" is the Argentinian equivalent of "Tea" for a British.
Dec 15, 2007
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IMG_1419.JPGDissipator3242 viewsThe dissipater is homemade.
Note the shape and size of the inter-connecting metal between sheets... i don know if the shape was necessary but... it was a aesthetic choice.
Dec 15, 2007
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IMG_1420.JPGDIY Heat Sink3228 viewsAfter polishing... beautiful, no?Dec 15, 2007
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IMG_1422.JPGDIY Heatsink3434 viewsNote the shape and size of the inter-connecting metal between sheets... i don know if the shape was necessary but... it was an aesthetic choice. Dec 15, 2007
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IMG_1423.JPGMaking the chassis3126 viewsBefore bending the sheet metal.Dec 15, 2007
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00118.jpgLM3886's and heatsink3366 viewsThe thin cables are for the grounds that (i suppose) don't carry high current. The chips have silicone grease for better thermal conduction.Dec 15, 2007
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00119.jpgFinished, inside view3735 viewsEI transformer, rectifier, star ground (just above the left cap of the rectifier), LM3886...Dec 15, 2007
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