NO VARIAC USE FOR TUNING?

To: tesla-at-pupman-dot-com
Subject: NO VARIAC USE FOR TUNING?
From: Fucian-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
Date: Fri, 10 Mar 2000 20:09:47 -0700
Approved: twftesla-at-uswest-dot-net
Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Has any one ever tried tuning a coil without a variac?Would it be a problem 
for only a 9kv30ma powered coil?--Matt