Modifying Crossovers
I just read a post about changing resistors and caps in the new Borresen X3 speakers. I am curious why there is interest in changing the components in a brand new speaker. I also am curious if it would make them better than why didn’t the designers put a better component in the first place. Just a thought and scratching my head. Have a great day.
I'm using the Dueland 0.01uF JDM Tinned Copper Foil Bypass caps on both the tweeter series cap and the midrange shunt caps, I didn't really notice much if any difference on the midrange caps, but they added a touch of sparkle and airiness in the tweeter circuit. I added these before the crossover caps were burned in though, so I'm not sure if they would have had the same affect after burn-in. But I'm really happy with the way my speakers are sounding now so don't want to make any changes. |
@jaytor your values may be too small. Try 0.1uF. I use Ayudin True Coppers. Sorry for the spelling. I don't think the issue here is the brand, but a lot cheaper than the Duelunds. |
I had an old pair of JBL 212's with the sub given to me. I changed the capacitors to new Sonus (I think they were called) capacitors. They really sounded great - big difference, so much so that I regretted selling them. Capacitors don't wear out but the newer caps are much improved. Swapping out the older for newer caps is not a difficult job, just remember to label the speaker polarity. |
@lemonhaze I've worked 40+ years in an industry where all equipment is continuously in service with very short outage times. So there isn't much testing time available. Generally the engineers (I'm the engineering manager) do a lot of research and have one chance to get it right. It needs to be well designed, prefabricated, and ready to instll quickly. Which is my plan here. I plan to have my speakers down for 1 day, at most 2. So I guess it is natural that I took that approach with this project. And a good thing too since I've been very slow to get the internal crossovers made. Got traction again when I decided to go external and think I'll have them done in a couple of weeks. Picked up the wood for the caninet this morning after my hike. Right now I'm waiting for my sawblade to come back from the sharpener. Also the Neutrix connectors for the cable from the crossover to the speaker were backordered but I found them somewhere else. It's al coming together. So I don't plan to try it with and without the bypass capacitors. I chose the .1uF Dueland Copper-Sn foil based on experience and recommendations from friends. If I was doing it now I might go with the copper silver for $30 more each. I agree with Erik that .1uF is the right size. If you are anticipating doing this job yourself feel free to send me a PM. As a DIYer I'm always willing to spend time helping others. Jerry |
The Volti Rival also allow crossover adjustments through resistor changes: https://voltiaudio.com/new-rival-crossover-adjustments/ looks like not necessarily improvements but rather adaptations to a room and/or user sonic preferences.
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