Speaker Mods

What will this accomplish?

It will greatly improve inner detail in the lower midrange & bass.

Also, don't waste time with the Bybee filters, get the Bybee
purifiers($40-$50.@) and connect them in line with the postive leads of each driver.

I recently did these mods to my seven year old pre-Talon Khorus speakers and was blown away with the improvements.

Total cost $225.00 and two hours of my time.

Kana, where did you buy the Bybee's? I would like to try them on my Dunlavys, but can't find them for less than $80 each.

I can tell you 4 reasons why I use the Bybee Ultimate Speaker Filters.

#1 - They work and sound great.

#2 - I don't have any crossover unit and there is nothing between my speaker driver leads and the Bybees except a pair of Cardas posts and 11 inches of Nordost SPM cable.

#3 - Anything that is inside the speaker cabinet is subject to far higher amounts of vibration than something outside the cabinet.

#4 - There is at least 8 times the filtering in the Ultra Filters than in a single Purifier. All Bybee users will tell you that more Bybee is better. I don't know if there is some kind of upper limit.

I can agree that when using 3 way systems such as Nrchy, it may be advantageous to place the purifiers after the crossover, at the drivers. However, he expressed trepidation about going into too much "surgery" inside the box. And the caveats above still apply about the vibration, and the smaller amout of filtering. I would add a warning about changing the stuffing of the cabinet, that it could change system Q and result in an unknown sonic difference, that may be better, or worse. If much internal surgery is now up for discussion, high quality caps, chokes, and wire in the crossover networks is in order as well as possibly wider spacing between chokes and other field-sensitive devices. Brass screws on the crossover mounting could also yield improvements, and even relocating the crossover to outside the box has been known to cause improvements due to lessening the vibration on the network. Damping driver baskets can help. Redesigning the crossover for bi-wiring or tri-wiring may help, if you know what you're doing. Even eliminating the crossover altogether, and using active electronic crossovers and tri-amping is an option. How far do you want to go?

Pilar- got my purifers from a friend. I think they cost the
dealers $40.@. Check Bybee's website, maybe some of the modifiers listed will cut you a better deal.

Twl- Haven't heard the Bybee filters, but I'm sure they sound great. Don't know if I buy the argument that more
filtering is better. I purchased the Bybees purifiers based on the concept that they improve the energy tranfer between components.

Agree there's a potential for vibration when
mounted inside the cabinet, but if installed properly, I doubt it would cause anymore problems than the wiring leading from your drivers to the Cardas post. I made sure
the purifiers were supported and clear of the backwave
of the woofers when I did my installation.

Also, agree that external crossovers or electronic crossovers are a path worth following.

I was most surprised by the improvements from the Blackhole 5, since my speakers cabinets were well made with lots of internal bracing.

Amazing how all these little add up.

Aloha.