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In Reply to: RE: Hiraga crossover for 311-90 posted by DougE on September 03, 2016 at 15:28:25
I've got the same HF setup (288-8G on 311-90's) but they are actively crossed at 500hz and attenuated with a Werner autoformer. To extend the high frequency I use a pair of MR902's (w/8 ohm diaphragm) that are 1st order passed over at 6000hz (also attenuated by the Werner autoformer). Would I be better off just using the 288/311 with a compensation circuit? If so, what would that circuit look like? Thanks for your input.
Follow Ups:
Hi Jad, I tried JBL 075 with my 288 & 311 using the Werner xover, but I couldn't get them to integrate. The sound of the 311 alone didn't go as high of course but came pretty close and without the negatives the tweeter added. All in all, it was better as a 2 way.
Right now, I am playing with bypass caps on the Werner xover and have gained some extension with a .22uf and .01uf on the hf motor run. The idea of a compensation circuit still makes sense to get more top end lift although I don't know how to figure out values.
Anyone?
Best,
Doug
I had tried a JBL 2405 a while back before I got the autoformer (used an L-pad to attenuate) but couldn't get that to blend right. Also tried an Altec 902 without a horn attached and it wasn't too bad (much better than 2405). So far the MR902's are the best but depending on type of track playing (vocal, big band, small group jazz) it's blend varies.
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