Posted 6th April 2010 at 12:38 PM bywintermute (Wintermutes Rantings)
Updated 5th January 2011 at 02:18 AM bywintermute(fixed a couple of typos, and added a small amount of clarification.)
Following on from YARPS I thought I would post the design I have been working on for my active crossover (which is in fact is what the YARPS power supply was designed to drive).
So here I present the Synergy "Active" Crossover. Please note I have only simmed it at this stage (and when I started I knew nothing about active filter design) so there is no guarantee it will work.
Why have I put "Active" in quotes? Because whilst this filter uses active components, for all intents and purposes it behaves like a passive filter. It basically emulates either an LC or a CL passive 2nd order filter.
Why the name Synergy? Well I though it was the best word to describe the differing technologies working together to give the end result
The design goal is to have an active crossover that for all intents and purposes is transparent. That is it does nothing other than split the frequencies at the desired crossover point....
Posted 27th March 2010 at 06:40 PM byBas Horneman (Bas Horneman's diyAudio.com blog)
Updated 14th February 2011 at 06:51 PM byBas Horneman
The Takman resistors have thick copper wires. This makes for wonderfully strong little spiders.
I've also used ceramic terminals strips for the first time and it makes for a nice strong construction.
And I did the ccs for the phase splitter a while ago.
 I used silver solder. But found out that it is NOT necessary with these fakes. Fake or not it make for a great construction.
"TEKTRONIX CERAMIC STRIPS, HISTORY and GENERAL INFORMATION
Tektronix first developed and used ceramic strips in their oscilloscopes in 1952. During the manufacturing process, silver in liquid form is painted in and on the notches of the strips prior to the application of the final glaze and final firing. The silver is then firmly bonded to the ceramic and wires can be soldered directly to the ceramic.
Special silver-bearing solder should be used when soldering to ceramic strips so the silver bonded to the strip does not...