Nope, nylon coated strings don't work with Piezo
Hi, I thought you might be interested in an email conversation I had with Spector re problems with nylon coated strings on the piezo bridge:
My email to Spector - I have been experimenting with different strings on the instrument, trying to obtain as near an upright bass sound as possible. However, when putting Rotosound trubass 88 (black nylon coated flatwounds), when using just the piezo pickup, the response from the A and the D string is very low. I notice that touching the chrome part of the sadle results in the sound becoming bright again, implying that there is no fitted earth on the A and D saddles, whilst there is on the E and G. I have subsequently tested continuity and note that there is earth continuity on the E and G string but not on the A and D. When I put the standard (non-coated) flatwounds back on, all is well and there is continuity across the saddles (using the chrome part for testing purposes) implying that continuity is via the metal strings.Is this normal? Does this mean that the instrument cannot be fitted with nylon coated strings for use with the Piezo bridge?
Their reply to me - thank you for the email. I am glad you are enjoying your Spector bass. please note that for the Fishman piezo pickups to work, strings need to be standard strings not coated or tapewound. you are correct about that. so flatwound strings will work for you just not any coated or tapewound strings.
So there you have it - apparently. It is my intention to provide a full earth to each saddle and carry on the quest. Finding a bass guitar with a true upright sound (I also play upright) has been a holy grail. My conclusion so far, get a bigger car so that I can carry my upright bass!