Double Bass B String "thud" on CR5M w/ Spirocore B

[Gorgula]

I have Pirastro Obligatos on my CR5M which I generally like. Recently, I put on a Spirocore B string to see how it would sound. I like it's tone better than the Obligato B. It's meatier w/ more growl, but not in a bass guitar sense at all.

However, I notice that when I play on the E string, the B string makes quite a "thud" when my right hand fingers come to rest on it. Does this make sense? In other words, after striking a note on the E string, when my right hand finger hits the B string it makes a loud "thud".

The problem goes away if I use the magnetic pickups, but I REALLY prefer the piezos over the magnetic pu's.

I'm thinking it has something to do with the steel core of the Spirocore.

Has anyone experienced this before or have any ideas on how I might solve this problem?

Thanks

 

[Big Mother]

Digging up a long dead post.
I seem to have the same issue with the Spiro Weich I recently put on my CR5M.
Seems the "thud" is from my finger landing on the next string down (but may be from the finger contact before pulling through), a very strong, compressed, non-musical, and dominate thud when I play on the E and A. Not unlike if you tap the bridge with a finger. It is obviously stronger when I roll toward the Arco setting, but still pretty overwhelming on Pizz as well.
I am very new to the EUB game, is this normal? Is it because the stings are new?
Any help would be great

BM

 

[KUNGfuSHERIFF]

The piezo is hearing your finger impacting the string and/or the wood.

 

[Big Mother]

I figured that was it, so is it a technique thing to not get the big transient pop/thud? It is rather pronounced through my amp, stronger than the notes tone.
Does it tend to calm down as strings break in?

Feel a little silly with these questions, been playing Bass Guitar for years and years, but the EUB is a totally new expirence. Lucky for me, I always feel ok asking silly questions here on TB.

BM

 

[Gorgula]

Hey! It only took 5 years to get people talking about this! Awesome!

The piezo is hearing your finger impacting the string and/or the wood.

Kung Fu,

You're right, that's definitely what is happening here. I plan to spend some more time working with some notch filters to try to EQ it out.

 

[Jon Moody]

I have a CR5-M with Spiros on it, and don't have this problem. However, I started on DB and moved to EB so for me, this is just a regular part of proper technique to ensure that this string "thud" doesn't happen.

That said, it "will" calm down a bit as the strings break in (the Spiros on my bass are OLD), but I would still look into technique to help remedy this situation as you get more comfortable with the EUB.

 

[Slevage]

I had the same issue when I got my Azola Bug (floating top), about 13 years ago. I adjusted my technique, plus I restrung it E-C after owning it a couple of years.

For me, the high C made playing (especially when reading) made it easier to play accurately. Reaching a high Eb without shifting comes in handy for big band stuff.

 

[Big Mother]

Thanks all for the info, all makes sense,
It has died down dramatically, a strong combination of working on technique, strings breaking in, and also the room I am in.
I should have thought about the acoustic environment earlier. The room I was practicing in has a lot of issues, cancelations, low ceiling, etc., moving into a a better room helped a bunch

Thanks again!!

 

[greenbass5]

Are you using any kind of high pass filter? such as and FDeck for example? that may help even further.