I am interested in building the Troels Gravesen SBA 761 kit speaker.
I already have both the MW16 woofers and the tweeters but the tweeters I have are the 4 ohm version and the kit uses the 8 ohm version.
Any suggestions for changing the crossover values to suit my 4 ohm tweeters?
Perhaps some extra attenuation will be needed too?
The tweeter is the TW29RN-8 as shown below.
I already have both the MW16 woofers and the tweeters but the tweeters I have are the 4 ohm version and the kit uses the 8 ohm version.
Any suggestions for changing the crossover values to suit my 4 ohm tweeters?
Perhaps some extra attenuation will be needed too?
The tweeter is the TW29RN-8 as shown below.
Well roughly speaking when you half the impedance, the value of the inductors is halved and the capacitor values are doubled. Resistors need to be dealt with as well. Probably something you don't want to do without actual measurements and a better understanding of crossover design.
Troels sates in the write-up that he will not do a design for the 4 ohm tweeter and please don't ask!.So he predicted people doing exactly what I am trying to achieve.
I have the drivers in my Meniscus Kairos speakers which I have already built.They are very good but I do wonder how much better they might sound with higher efficiency and a simpler crossover.And the addition of a dedicated woofer.
I have the drivers in my Meniscus Kairos speakers which I have already built.They are very good but I do wonder how much better they might sound with higher efficiency and a simpler crossover.And the addition of a dedicated woofer.
Well you would gain some efficiency.Which might give you a more dynamic sound.Especially if you are using lowish powered amplifiers.Which I am.
The MW16 mid/woofer is known to work well with a first order crossover. And it and the tweeter are both quite efficient.The Kairos is not very efficient.
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