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Need Realistic HK 210/Acrosound Stereo 120 Amplifier Schematic

Posted 28th October 2012 at 08:13 PM by 1972youngstown

recently aquired Realistic HK-210/Acrosound Stereo 120 amplifier. would like to restore but can not locate schematic or operating/owner's manual(instructions for biasing tubes). does anyone have schematic and/or manual or direct me where i can be find them?
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Sydney HiFi show - a mostly eye opening, not ear opening, exercise ...

Posted 22nd October 2012 at 09:58 PM by fas42
Updated 23rd October 2012 at 11:33 PM by fas42

Well, as mentioned elsewhere checked out the first proper show we've had in decades, and in hindsight it has been a very worthwhile, educational experience. Not because I heard magic audio I've never heard before, but, because I then browsed a collection of other people's thoughts and takes on the various sounds heard at the event, on another, Australian, audio forum.

Which showed me that people are in very different spaces, as regards to what is considered, "proper sound". Obvious of course, but it still throws one, makes one question one's ideas and thinking on matters ... for a split second, at least ...

My personal take on the show is that there has been a very discernable improvement in the standard, or average, quality of sound of a normally assembled system which has had only a minimal amount of tweaking applied to optimise it. Problems that were obvious in previous such efforts were far less apparent, you didn't want to run screaming from...
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Eastern DIY Audio Gathering

Posted 16th October 2012 at 03:07 PM by vdi_nenna

This is a place holder for information regarding an East Coast DIY audio gathering.

Stay Tuned...
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Dual Rail Power Supply for F5T and F6

Posted 10th October 2012 at 05:55 PM by Tea-Bag
Updated 27th October 2013 at 01:02 PM by Tea-Bag

Here are some pictures of the Power Supply that CRT and myself designed for use with the F5T and F6Convertible design. It is meant to be both compact, have adequate capacitance, and be able to use the recommended MUR3020W or similiar diodes. They are 2.5mm thick boards with 3OZ copper thickness.

(Updated boards take now 40mm wide caps and are larger measurements below and new pics)

Click the image to open in full size.

Boards measure 108mm wide x 192mm long. The diode boards are 35mm x 54mm each.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

...
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Amp Camp Amp Build Instructions

Posted 8th October 2012 at 06:10 PM by N Brock
Updated 26th October 2012 at 07:36 PM by N Brock (added link)

http://www.diyaudio.com/forums/diyau...ild-guide.html

Here is the link for the actual build guide.
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fs2

Posted 8th October 2012 at 06:09 PM by N Brock

fs2
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fs3

Posted 8th October 2012 at 06:09 PM by N Brock

fs3
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fs4

Posted 8th October 2012 at 06:07 PM by N Brock

fs4
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Old

General Update

Posted 7th October 2012 at 04:05 PM by chris661

So I got my grades (AAAB in Maths, Physics, Chemistry and Biology respectively) and now I'm at Sheffied University, studying Physics.

Plenty of green stuff nearby, so of course mountain biking is high on the agenda.

Well, it was.

After the past couple of rides (with a club), my bike is pretty much knackered.

The forks have emptied themselves of oil; I've managed to snap (there's only half of it left) one of the rings on the cassette; the largest chainring (at the front) got badly bent and now the metal is all soft; the bearings around the rear shock are almost gone; the rear wheel has developed some play (probably more dead bearings); the pedal bearings have gone; and the entire drive train is apparently >100% worn.

Happily, the Hope brakes are soldiering on.

The cost to put everything right: over 400, and they're gonna have to send the forks off to be fixed.

I think I might look...
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