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Showing results for tags 'Exposed'.
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Have had a crossover project in the works since I became the owner of the La Scalas That project was to make the ( originally two piece ) gentle slope exposed crossover fit into a single board design that will be exposed to view & showcase the crossover and have easy access to the Autoformer attenuating section for db adjustments as required I am more versed in Mechanical Engineering so I have employed an associate to build the crossovers for me for a small cost and the offer of a listen on the system when it's all connected up The Crossover design is loosely based on the ALK gentle slope type AP12-500 & AP12-6000 configurations As all the drivers in my speakers are not standard - some changes needed to be made The original design of these crossovers was - as a two piece system as that fits the Klipsch Heritage range We put our thinking caps on and have come to a design agreement and tweak for a single board based on Troels Gravasens observations as we have plenty of available board space We have designed this build as a single board - all coil distances are to Troels recommendations The layout design was made maximise neatness and avoid component interaction. We did not forget that the attenuators being transformers also need to be treated as inductors for spacing issues. Soon after we simplified the connectivity of all three driver sections on the crossover alleviating many connection points, and a new schematic was drawn up (I won't post the schematic as ALK the designer has removed them from the web site due to plagiarism) This crossover still has the separate mid range and tweeter attenuation features for fine tuning First we did a basic layout of the components on the floor with the view to tweak as needed for best performance and fit A close up of the tweeter attenuator - This component will allow me to tweak db volume to suit speaker placement and room size The coils for the Bass and Mid sections are hand wound and weigh over 3 pounds US -approx 1.5 kg each We chose and used a good speaker colour match plywood board - and started the component fit You will see a set of wire cutters and the tape measure @ 500mm to judge scale The crossovers are finished - my associate has done a fantastic job and has emailed me a couple of photos of the finished crossovers For all soldered connections Mundorf Silver/Gold solder was used I chose to use a Duelund resistor to service the Bass & Mid range Top side layout Underside Will apply finishing touches in the form of - 1) A frame that will incorporate in the design grab points for easy lifting 2) When funds allow I will have a perspex cover made for dust protection ( like a TT cover ) 3) Labels for connection identification points 4) A Klipsch logo or badge to each board as a finishing touch