Yes you can the preamp will handle it. Something interesting I saw for the first time in my 94 Thumb NT that came stock 18 volts is they wire the pickups that are obviously active to receive 9 volts and the preamp the full 18. I spoke with David Meadows of Audere and he said this arrangement giving the preamp 18 volts gives the preamp all the power it needs for maximum headroom and clean operation and minimal distortion. Keeping the pickups at 9 volts will keep from overdriving or sending to much output to the preamp. In other words if you are at 9 volts with both preamp and pickups and you desire cleaner output and more headroom and you give preamp and pickups again the same equal amount of volts even though it’s doubled it will sound the same because the preamp although having increased voltage to operate is getting twice the input.
Warwick although I don’t know if they were the first to figure this out were doing it almost 20 years ago. Again even 20 years ago Warwick was pushing what was cutting edge design and technology to me I saw it firsthand.
If this is of interest to you let me know I can draw out a diagram but simply the two battery terminals have to be wired in series so the hot wire for the pickups come from in-between the two terminals and the hot for the preamp comes at the end I hope that explains. I did do side by side comparisons and it made a world of difference in noise and distortion.
Easily distracted by shiny things
Last edited by Means2nEnd : 09-17-2013 at 08:21 AM.