rjrbass Posted September 27, 2010 Share Posted September 27, 2010 I purchased a pair of Sentry 100 speakers but cannot find out any info on these. The cabinets are 36" h X 31" w X 22" d, and contain 9 drivers, 15" woofer, 4 - 4.5" midrange and 4 - 2" tweeters. All drivers are 8 ohm. The current Xover consists of only an 8 uf cap to the tweeters and 24 uf cap to the midrange. The wiring to the woofer, mid and tweeters is in parallel, and the 4 tweeters are in some sort of series arrangement, as are the mid. I have no idea of the Xover points. I have a spare pair of B3 (Cornwall) Xovers. Can I use the B3 for these speakers? Quote Link to comment Share on other sites More sharing options...
djk Posted September 28, 2010 Share Posted September 28, 2010 " Can I use the B3 for these speakers?" No. The mids and HF are probably series/parallel, presenting an 8R load to the caps. The resulting crossover points would be about 800hz and 2.4Khz. I would just replace the caps with some reasonable quality new ones, and maybe change the tweeter caps to something smaller, say 4.7µF~6.2µF. Quote Link to comment Share on other sites More sharing options...
rjrbass Posted September 28, 2010 Author Share Posted September 28, 2010 djk, thanks for the advice. You are correct that the mids and HF speakers are in series/parallel to net 8 ohms. I will recap with good quality caps and I will take your advice on a smaller cap value for the HF. Quote Link to comment Share on other sites More sharing options...
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