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Why do roundwounds have less longevity than flatwounds?

I’ll bet that an ultrasonic cleaner with a non-aqueous solvent like the alcohol would be very effective.

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Well most flats don't have a lot of high-end frequencies to lose (so they are already "dead" in the sense of roundwound dead). The only flatwound string I've used that does have high-end more like a roundwound is EB cobalt slinky flats. So far on all the sets I've had, they retain that high-end way longer than most rounds. So, as someone said (the "thread ender" earlier), flats do not collect as much finger gunk to kill the strings.

As for resurrecting dead rounds... yes, boiling them brings back most of their life (so they become zombie rounds), soaking in denatured alcohol works even better. AND, loosening the strings and slapping the **** out of them against the frets, surprisingly, brings them back to life... although, every time I do that, I can't help shuddering to think what it is doing to my frets...
 
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Roundwounds have all those valleys in between all those ridges to collect skin, oil and general gunk that makes them get dull. Flats are smooth. Just in case you wanted someone to answer your question.
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That's pretty much it.

BTW, I sometimes boiled my old Rotosound RS66 strings in white vinegar, back when I had my P.

A bit stinky, but it did seem to do a better job cleaning out the crap than just water.
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Rounds start out zippy and go dull. Flats start out dull and stay dull.
Personally I like the sound of old dull rounds. IMHO they last as long as old dull flats.
It's just that most round string players prefer the new zippy sound and call them old and worn out when they mellow to a groovy cool dull.
 
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Question is in the title, guys! Tell me why!

Pretty simple actually, roundwounds generally have exposed cores, so it's easier for dirt and oil to get between the windings and degrade the strings, flatwounds have an additional flatwould metal wrap and sometimes silk wraps between the core and final wrap. With new string technology this discussion is almost a mote point. Ernie Ball Slinky
Cobalt Flatwounds sound great, and are flats.

Ric
 
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Roundwounds,are played more than flatwounds,so they don't last long,if they are played more?
Nope....I don't change strings on my bass between songs. Whatever I have set them up with is what I play. Not really an easily interchangeable item.

By the way, I put on a set of Labella White Tape Wound flats last week and played them at one rehearsal and then at a gig last night. They worked great and were not the "dull" muted sound you hear about with flats. I originally played flat wounds because that's all that was available in the 60's and early 70's. So I used flats until 1976, when they were stolen along with my 1965 Jazz. Since I purchased my current bass back in 1985, I've only used round wounds on it - primarily Dean Markley Blue Steel and later DR Black Beauties. So I've used round wounds for the last 33-years. So far I am very pleased with the LaBella flats. Flats are notorious for "going dead" after a while, which some folks really like. I'd like to keep them sounding like they do now. We'll see how long it lasts. So far I'm a happy camper with flats again.
 
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I use to use a lot of La Bella strings myself. I would get the super steps steels to get that nice bright tone, then switched to Dunlop steels. The La Bella strings did last longer for that super brightness, but once it’s gone, it’s gone. The Dunlop steels, I put on and played one gig, put the bass in the case and came back a month later, found them dull and dead. After that I switched to Elixier Nickle plated strings. It’s been about 4 months and they still bright enough for me, with the warm tone.
 
Pretty simple actually, roundwounds generally have exposed cores, so it's easier for dirt and oil to get between the windings and degrade the strings, flatwounds have an additional flatwould metal wrap and sometimes silk wraps between the core and final wrap. With new string technology this discussion is almost a mote point. Ernie Ball Slinky
Cobalt Flatwounds sound great, and are flats.

Ric

Yep. The only flatwound strings that I have been pretty happy with for the most part. They don't sound exactly like a good set of rounds, but they are about as close as flats have gotten so far. And I don't think it is necessarily the high treble end, either because there are other flats that put out a good deal of treble. It's the "low-mid spike" that almost all flats have and the EB cobalt flats almost do not have at all. Since I really do not like that low-mid bark at all, that's the reason I'm pretty comfortable with the EB slinky cobalt flats. I have them on a couple of my basses. The rest are mostly strung with Dunlop super bright nickel rounds. I used D'Addario SS rounds for years too--great strings that last a long, long time.
 

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