rogerthataudio Posted April 17, 2019 Share Posted April 17, 2019 I seached for the subject wiring diagram and could not find it. Please send it for review. Also, I have two other questions for the group: 1. Are the poly switches necessary? 2. What do you folks recommend for internal replacement wire ( gage and type of wires and connectors ) between the crossover and the drivers. Thanks! Thanks! Quote Link to comment Share on other sites More sharing options...
Deang Posted April 17, 2019 Share Posted April 17, 2019 Quote Link to comment Share on other sites More sharing options...
Deang Posted April 17, 2019 Share Posted April 17, 2019 Leave the internal wiring alone. It's fine. If you listen loud, leave the poly switches in the circuit. Also leave them in place if you have equipment with strong turn on transients. Otherwise, remove and replace with 1 ohm Mills resistor. Replace capacitors in high frequency circuit with AudioCap PPT Theta film and tin foils. Replace electrolytic in low pass with new electrolytic. Parts can be sourced at www.partsexpress.com Quote Link to comment Share on other sites More sharing options...
gsgleason Posted April 11, 2022 Share Posted April 11, 2022 @CrankysoldermeisterThe old links are all broken after the site change. Do you have the KG4 schematic still? Quote Link to comment Share on other sites More sharing options...
jjptkd Posted April 12, 2022 Share Posted April 12, 2022 58 minutes ago, gsgleason said: Do you have the KG4 schematic? 1 Quote Link to comment Share on other sites More sharing options...
M.Att Posted April 27, 2022 Share Posted April 27, 2022 I just redid a pair of KG4s. Here's what I came up with, it's slightly different than stock. The biggest difference is that the tweeter is now tame with the addition of an LPad. On the woofers I added a resistor to bring down the impedance, a notch filter for the area just before the XOver point, a Zobel network, and a final inductor to roll off the lower woofer a bit sooner. I should have used a larger inductor but was just grabbing parts out of my spare parts bin. Quote Link to comment Share on other sites More sharing options...
KLL Posted June 2, 2022 Share Posted June 2, 2022 M.Att nice crossovers how do I get a set of those. I just found a pair at a garage sale $100 I couldn't refuse, But I'm thinking update crossovers. I also have some Forte I with alk crossovers love them Quote Link to comment Share on other sites More sharing options...
M.Att Posted June 3, 2022 Share Posted June 3, 2022 On 6/2/2022 at 3:59 PM, KLL said: M.Att nice crossovers how do I get a set of those. I just found a pair at a garage sale $100 I couldn't refuse, But I'm thinking update crossovers. I also have some Forte I with alk crossovers love them Hi KLL, Those are my creation, but it only took about an hour to solder/wire up. The schematic is reflected in the picture. I got all the parts from Parts-Express minus the plywood, screw-down bus, and yellow 8.2uf cap (Amazon, free same-day shipping was the only reason). It wasn't the cheapest; I spent more on caps since I was using inductors from my stash. Given the quantity and size of parts I found plywood to be easier than the perforated boards. (I did make a double-height perf. board XO for my Classix IIs, but wouldn't recommend that here) Here's a picture of the new XO in the box. 1 Quote Link to comment Share on other sites More sharing options...
KLL Posted June 4, 2022 Share Posted June 4, 2022 Thanks for your response. the additional picture helps since I've never done any electronics so this is a little challenging. It looks like you're still progressing please keep us informed how it sounds, these KG4 are a bit bright at volumes, and I also would like to tame them a bit . Quote Link to comment Share on other sites More sharing options...
M.Att Posted June 5, 2022 Share Posted June 5, 2022 4 hours ago, KLL said: Thanks for your response. the additional picture helps since I've never done any electronics so this is a little challenging. It looks like you're still progressing please keep us informed how it sounds, these KG4 are a bit bright at volumes, and I also would like to tame them a bit . Hi KLL, I'm all done, sold them to my brother a few months back to one of my brothers. I got a chance to hear them again a few weeks ago though, I really liked the way they came out, detailed but not shrill / shouting. The bass was really revealed by taming the tweeter too, I had them placed about 2' from the walls and I didn't think a subwoofer was necessary. The one thing I wish I had done was measure the final frequency response, but my brother auditioned them, was enamored, and left that same day. The biggest fix in taming the horn was the addition of the LPad ( Series + Parallel Resistor {R4 & R5 in the schematic} ) That's the only change I made in the tweeter's circuit that affected the volume of the driver. If you want a relatively low-cost introductory lesson check out the C-Note DIY kit. They're great sounding little speakers and you get to learn a bit about speaker building in the process. Feel free to DM me if you have any questions. I've not built many, but I'll gladly share my experiences. Quote Link to comment Share on other sites More sharing options...
hron61 Posted February 12, 2023 Share Posted February 12, 2023 On 6/4/2022 at 12:39 PM, KLL said: Thanks for your response. the additional picture helps since I've never done any electronics so this is a little challenging. It looks like you're still progressing please keep us informed how it sounds, these KG4 are a bit bright at volumes, and I also would like to tame them a bit . When I had my Forte 1s years ago I used rope caulking on the exterior of the horn shaft. It took the harshness right out of it. No more in your face brightness, just a nice laid back high. Experiment with how much caulking you need to bring it down some. Quote Link to comment Share on other sites More sharing options...
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