This last weekend I did this conversion for B-E-A-D and am getting the action where I want it. Its feeling pretty good.
I used D'Addario Chromes, I play flats with a 5 string set ECB81-5 they are 132, 100, 80, 65 not the perfect choices but they come in a set and the local GC doesn't have singles.
They end up with # of B 35.9 - E 38.4 - A 43.7 - D 52, This set easily tunes up to C and the string tension is only 40.2# Very reasonable. My original setup with a 105 E was at 41.4#.
Depending on where you go with the other tunings you may want to play with the upper string gauges some. For B-E-A-D they are very comfortable for me as they sit.
I had one poster who helped me by giving me the link to the D'Addario catalog and tension specs. these are a definate have as it will tell you where the things work out.
http://www.daddario.com/Resources/JD...sion_chart.pdf
I originally tried playing C with the stock strings and they were way too loose on my jazz.
I did the work myself, and the bass plays wonderfully. However my luthier had done Jewelled Frets and a Badass II bridge previously. The fret levelling was necessary and really helped this bass work.
I had some additional questions about pickups and stuff and the guys were helpfull in electronics and no changes are necessary on them.
Amps are my thing, By drop tuning she's going to be opening up a whole new area of low frequencies. My speakers, and I have a rather large system are not rated for 30.86Hz (B) where E is 41.20 HZ. C is 32.70HZ... They go to Xmax really quick so the volume is way down to keep the things from bottoming out.
That realm below 40 takes a whole new dedication in speakers. Just saying a 15" or an 18" doesn't get the job done. The cabs have to be designed for the lows. That's what I'm working on next.
BOB