Passive Bass Cord Length

I was wondering how much cabling I can have from my (passive) Fender Jazz Bass to my amp in a live setting without noticeable tone-suckage.
My current Setup including my pedal board and everything ends up being about 35 feet of cable (bass to board, through the board, and out to my amp). I know that the tone of my bass will start to degrade if there is too much since it's passive, but how much would be noticeable? I'm hoping to be able to use this Setup at an upcoming show with my band.
Any advice would be appreciated.

Here's a nice resource to go to:
http://procosound.com/download/whitepapers/Understanding Instrument Cables.pdf

[note:] Why is this a wiki page? Shouldn't this just be a new discussion topic?

Answer #1
The best rational answer IMHO is to play with the absolute shortest possible cable that doesn't restrict your movement (where your movement is within reason, i.e., somewhere in the range of 10-20 feet from the amp).

Answer #2
While #1 is a good, basic answer, here are things to consider:

• The passive bit is only from the passive bass to the pedalboard - or rather to the first pedal that isn’t true bypassed. From that point on, the signal is buffered (just as it would be with an active bass), so it is no longer part of a passive cable length equation.
• Get the best cable you can afford. This will reduce signal loss, both overall, and in terms of high frequency loss.
• This is bass. While high end rolloff matters, it typically doesn’t matter here as much as it would with, say, a guitar.
• As someone else noted, use a cable that’s as long as you need, but no more so than necessary. That said, I saw Earth, Wind & Fire in 1973. Verdine was playing a Fender, I believe. Whatever it was was, it was almost certainly passive. During one song, Verdine jumped off the stage, danced across the Alexander Memorial Coliseum floor, made out with someone for a while, then danced back to the stage without missing a beat. Despite using a cable that was at least 100 feet long, the bass sounded great. Was it the best it could sound? Possibly not, but I’m willing to bet nobody thought anything of it. So if you need a longer cable for some reason, try it - preferably in a store setting before you buy, or via a vendor with a good return policy. If it sounds good, it sound sgood.