Can "Dark"Sounding Speakers Be "Brightened"UP???


One of my buds has a pair of the original Sonus Faber Concertino speakers(bi-wireable)partnered with a Peachtree Audio Decco,driven by a HP Laptop & cabled with all Audioquest copper cables(usb,power & speaker).While listening to my new Toy Monitors & Peachtree Audio MusicBox driven by an Asus Laptop recently he commented that he was able to hear treble frequencies(especially cymbals)on my system much better than on his & wondered if anything short of changing speakers could be done.
I have read that Silver Plated Copper cables tend to sound a touch brighter than all copper & was wondering if you folks think switching to all Silver Plated Copper(i'm thinking Nordost or DH Labs)cables might bring the treble up a bit in his system?
Thanks for your input,take care...
freediver
If a previous owner of the same speakers says that it just isn't that extended, then I'd go with that. The most important components in a stereo system are, in order: speakers, speaker amp synergy, amp, preamp, source.

There's only so much you can do to change the fundamental nature of the speakers, and speakers make the biggest difference.
just looked at this post if this has been answered...sorry.
If the crossover has an Lpad, with any pad on the tweeter, yes, you can reduce the amount of tweeter pad without changing the crossovers function. If the crossover has no pad or if the pad used was a single resistor figuring its resistance into the tweeter, then no, not easily, you would change the crossover design.
Back in the late 90's when I first heard the Concertinos at a Tweeter store, they were driven by a Marantz receiver (no idea on the model). Listened to a variety of material and I heard plenty of "sparkle" in the treble. Flash forward ten years and I finally purchase a used pair. I paired them with a VTL tube amp. Unfortunately, I heard much of what your friend describes. So basically I'm thinking that Concertinos are picky about amplification.