Probably because they had too many engineers on their payroll. ;o) Scopitone also used a tube for selection pulse. Jens On 6/2/06, Ron Rich <ronnnrich at yahoo.com> wrote: > > Wes, > That leads to another interesting (to me, anyway) question. Do you know > why Seeburg insisted on using a tube rather than the "relay" everyone else > used? Ron Rich > >