Alexander Posted October 19, 2018 Share Posted October 19, 2018 Here are the pile of parts for the next xover build. Just can not leave well enough alone my better half tells me She loves them just as they are Quote Link to comment Share on other sites More sharing options...
finallygotmyheresies Posted October 19, 2018 Share Posted October 19, 2018 Looks like fun. Some day I want to practice soldering and try my hand at building some myself. Good luck Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 20, 2018 Author Share Posted October 20, 2018 16 hours ago, finallygotmyheresies said: Looks like fun. Some day I want to practice soldering and try my hand at building some myself. Good luck I really enjoy the challenge of it all. Give it a go! Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 20, 2018 Author Share Posted October 20, 2018 Here is a mock up, took a bit of being creative to get everything on a single board of this size and keeping the inductors spaced apart. . Quote Link to comment Share on other sites More sharing options...
moray james Posted October 20, 2018 Share Posted October 20, 2018 I think that you will get better results with the inductors in a "T" configuration each tight in the others null. you might want to set up and listen to some assorted layouts. you can also experiment with a copper soldered foil wrap around the transformer listen to it both with and without a ground. Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 20, 2018 Author Share Posted October 20, 2018 I have always in the past grounded the autotransformer "frame", as will this time too. Not sure it makes a difference though, just a habit. Foil around the AT though never thought of that. Quote Link to comment Share on other sites More sharing options...
Deang Posted October 20, 2018 Share Posted October 20, 2018 What did you build with the last time? Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 20, 2018 Author Share Posted October 20, 2018 1 hour ago, Deang said: What did you build with the last time? Last build was the ALK forte II's using Janten standard caps & Dayton caps for the LF. Had bought some Audyn plus/Q4's & Erse foils & coils to build an oem based xover for the forte II's but it never happened. Quote Link to comment Share on other sites More sharing options...
Deang Posted October 20, 2018 Share Posted October 20, 2018 Should be an interesting comparison. Quote Link to comment Share on other sites More sharing options...
moray james Posted October 21, 2018 Share Posted October 21, 2018 3 hours ago, Alexander said: I have always in the past grounded the autotransformer "frame", as will this time too. Not sure it makes a difference though, just a habit. Foil around the AT though never thought of that. some steel around the transformer will also help especially in a power supply. Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 21, 2018 Author Share Posted October 21, 2018 3 hours ago, Deang said: Should be an interesting comparison. This one will just be based on the oem schematic, just sealed one cabinet today and will finish the second tomorrow, surprised to see I have real wood and not medium density board. Will add a bit of bracing too between the motor board and back panel near where the factory horizontal side braces are. After that is done and listened to for a bit the xovers will be put in place. 1 Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 31, 2018 Author Share Posted October 31, 2018 Well the cabinets have been re sealed an added a little bracing, sound real nice. Just need to get all of my pieces re gathered up and start on these xo's Quote Link to comment Share on other sites More sharing options...
jjptkd Posted October 31, 2018 Share Posted October 31, 2018 On 10/20/2018 at 7:49 PM, Alexander said: surprised to see I have real wood and not medium density board. The cabinets are MDF with veneer on both sides Quote Link to comment Share on other sites More sharing options...
Alexander Posted October 31, 2018 Author Share Posted October 31, 2018 4 hours ago, jjptkd said: The cabinets are MDF with veneer on both sides Veneer on both sides? Who a thunk :) Quote Link to comment Share on other sites More sharing options...
Marvel Posted October 31, 2018 Share Posted October 31, 2018 The mdf comes pre-veneered Quote Link to comment Share on other sites More sharing options...
Alexander Posted November 2, 2018 Author Share Posted November 2, 2018 Well we have a full set of Ciare woofers on hand now and the a55g mids from crites should be here today. Plan on changing out the k-75-k tweeters with ti's from the idle pair of forte II's to round things out. Will add ferrofluid to make them "k-79-k's" just for the h3ll of it since it is on hand. Looks like the xover will go in last... 1 Quote Link to comment Share on other sites More sharing options...
Alexander Posted November 2, 2018 Author Share Posted November 2, 2018 Got the a55g's, time to start …. 2 Quote Link to comment Share on other sites More sharing options...
Deang Posted November 2, 2018 Share Posted November 2, 2018 On 10/20/2018 at 4:30 PM, Alexander said: I have always in the past grounded the autotransformer "frame", as will this time too. Not sure it makes a difference though, just a habit. Foil around the AT though never thought of that. I wouldn’t do that. Do not make the frame part of the common part of the circuit. Quote Link to comment Share on other sites More sharing options...
Deang Posted November 2, 2018 Share Posted November 2, 2018 On 10/20/2018 at 8:31 PM, moray james said: some steel around the transformer will also help especially in a power supply. Another bad idea. Quote Link to comment Share on other sites More sharing options...
Alexander Posted November 3, 2018 Author Share Posted November 3, 2018 6 hours ago, Deang said: I wouldn’t do that. Do not make the frame part of the common part of the circuit. Would that be to avoid creating a possible ground loop? In ham radio we avoid them at all cost. Quote Link to comment Share on other sites More sharing options...
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