2. speakers
  3. 1078622315

Will I notice improvement with crossover mods?

I've finally discovered that the difference in sound between my two Hales Transcendence 5"s is due to a difference in crossover values between the two speakers. Aparently one of the speakers was at the correct values but the other speaker's crossover was off by over 10%. I've decided to repair the speakers by having both the crossovers completely redone with new caps, coils and resisters. The crossovers of both speakers will be upgraded to better parts and they will be the same correct values(evenly matched).
My question is that will I notice a big improvement with this upgrade/mod? I am having Solen foil caps replacing the old caps, Hepta- Litz coils replacing the old coils and improved resistors although I do not know exactly which ones. Opinion would be appreciated.
128x128mitchb
gmood1
1,251 posts
 
Hey Eldartford did you check the prices of those zero ohm inductors? Man.. I just about fell off the couch! I think I will keep my Danish made copper foil air inductors for now! I thought mine were a little expensive... until I checked the same value Mundorfs which cost 4 times as much!
mitchb's avatar
mitchb OP
336 posts
 
Gmood1, I may be paying quite a bit less than the price you said each one was previously so if ever your interested I may have a decent connection for Mundorf parts. They still are pricy regardless. Thanks again for your help.
gmood1
1,251 posts
 
Cool Mitchb ..we will have to talk my friend ! I am as excited about your upgrades as you are! I still plan on ordering some of those Silver PIO caps to go along with the Supremes I already have. I look forward to your update.
eldartford
4,262 posts
 
Gmood1...It's not clear to me that a zero ohm coil would differ significanly from a 0.05ohm coil. Too much of a good thing. I assume that the zero ohm coil can be purchased with Confederate dollars.

The prices on Mundorf components do not seem out of line for this kind of stuff (which is probably overpriced everywhere). I paid more for my Caps (Hovland) and for my coils (North Creek). So, of course, they must be better :)

The inductive high pass filter can be visualized as a second order filter (series cap and parallel inductor) with the cap replaced by a resistor on the order of 4 ohms. The resistor needs to be rated at 20 watts or more, because it will take the LF power. Another way to look at the filter is as a series crossover, with the woofer replaced by the resistor. The drawback of this configuration is that amplifier power is "wasted" heating up a resistor, but watts are cheap these days. The inductive high pass filter might be a good choice for protecting the tweeter in a biamp setup, where power amp gain would be easy to adjust to account for the 6 dB lost in the resistor. Also, with the amp being driven with the HF signal from an electronic crossover, there would be little LF power to be absorbed by the resistor.
machine
71 posts
 
anyone know of source for cross-x mod for aerial 10-t.thanks,bill.
More to discover