I hate to have to say it again, but changing the impedance of the driver ( or the load that the passive crossover sees ) WILL affect crossover frequency. If you don't believe me, try asking on the Madisound board. Calculate the crossover for a 4 ohm driver and then substitute an 8 ohm driver in its place. BAD NEWS, guaranteed. Nothing will work as you expected. That's why most quality speakers use impedance compensated L-pads or factor in the attenuators in the first place. Otherwise the hinge points would change as you varied the level of attenuation by altering the impedance of the circuit. I think that either Parts Express or MCM even covers this with charts for the various impedance drivers in one of their catalogues. Wiring a resistor that matches the tweeters impedance in parallel and then placing one that was rated for half its impedance in series would reduce the output while maintaining the same load / crossover point. Another "side effect / benefit" to doing this would be increased power handling in the high frequency section. Sean >
Replacing my tweeters a good idea?
I have a pair of infinity Delta 70 loudspeakers. They have 2x8" 1 6" 1 4" and a metal tweeter. They image superbly, and set a good soundstage. People think infinity are bad, but they are great in my ears, apart from the metal dome tweeter. It gets a bit harsh on some recordings. Is it possible that i could replace the tweeters with something else, say dynaudio tweeters? would it be worht the trouble? I am not getting new speakers.. so dont bother trying to say that. :P thanks
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- 29 posts total
- 29 posts total