diyAudio - Entries for July 5, 2012
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Old

Ceasar II 300B SE mono block upgrade Part #1

Posted 5th July 2012 at 06:36 PM by dvb projekt
Updated 24th July 2012 at 05:33 PM by dvb projekt (Titel changed)

A short quick upgrade for my Ceasar II Mono´s
to push the sq to the limit...


The last upgrade i made is to swap from the very good sounding Emission Labs 300B-XLS to

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the Sophia Electric Royal Princess 300B

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For me the best sounding 300B on the market!

The parts for further upgrading are:

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1st - The caps C2 & C3
2nd - The grid stoppers R5, R8 & R10


1st Upgrade




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The Mundorf silver/gold/oil are changed to the new Duelund Cast PIO-Cu.

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Old

My wiring scheme for the O2 in a B3-080 Desktop case with RCA's and 1/4 inch jack

Posted 5th July 2012 at 04:23 AM by MrSlim
Updated 5th July 2012 at 04:26 AM by MrSlim (fixed typo)

When I was planning the wiring scheme for the Baby Desktop O2, originally, I thought I would use 3 and 4 pin board mounted posts with equivalent pin connectors so all the flying wires could be disconnected from the board. I realized that would be too much work(and probably even more prone to disconnection so I only made one of the connections removable (the 3 pin P1 jack for the RCA inputs, beside the input J2 connector).
(note to add part #s for the pins and connectors I used)

Make sure you grind off the anodized coating around the holes on the inside of the panel before you mount the RCAs to get a good ground connection.

I used individual pairs of wire from solid core Cat5 cable for all the connections, and in my wiring description, I'll be using the wire colours from the cable I used. (it helped since I built 16 of them.. )

For P1 (for RCA input) I used Brown/white for Right and Blue/white for Left. The square pad(close to the the...
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