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Doug, I'm trying to find a photo I saw of the head cover of a Thermionics Soundmirror recorder with labels describing the functions of the knobs on the top plate. One on the left of the headblock cover said "erase". It's in a similar position to the brown coloured rod in the photo linked in my last message - where the headblock cover has been removed. Is it possible your father was able to make a new recording on blank tape and so didnt need to switch the permanent magnet erase head into position, allowing a cleaner, quieter recording? Rgds Tim. ----- Original Message ----- From: "Douglas Pomeroy" <[log in to unmask]> To: <[log in to unmask]> Sent: Tuesday, October 30, 2018 10:33 PM Subject: Re: [ARSCLIST] ARSCLIST Digest - 28 Oct 2018 to 29 Oct 2018 (#2018-245) Tim, The recorder was my father's, and I don't think he recorded over previous recordings. But, yes, the erase head was a permanent magnet. The noise level was no doubt due to the electronics and would certainly be higher than with a more modern recorder. Date: Mon, 29 Oct 2018 22:26:55 +0800 From: Tim Gillett <[log in to unmask]> Subject: Re: Soundmirror tapes Thanks Douglas, It seems then that so far, the sticking winds is an isolated case. I mentioned earlier that the very high noise floor seems confined to the actual recording. I suspect the machine used initially (early 1950's) was a Soundmirror which apparently used a permanent magnet erase head. When I made a new recording on an unused piece of the paper tape, on a modern era machine (Nagra 4.2), the noise was much lower than on the original recording. Tim Gillett Douglas Pomeroy Audio Restoration and Mastering Services 193 Baltic St Brooklyn, NY 11201-6173 (718) 855-2650 [log in to unmask] Music Over Business --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus