12-27-2014, 12:36 AM
NOT A GOOD IDEA. Believe me I once was working on a radio. I accidentally did power up a radio with the speaker unplugged. I had not sound and I looked in the cabinet and saw tubes glowing cherry red. I was lucky, I immediately powered down the radio and reconnected the speaker. All was okay with the radio but I always insure that the speaker IS connected when powering up a radio