I also check for magnetism occasionally as well and if there is no significant reading then I would not bother
This is a check on a Tascam BR20 - zilch
sticky11 by Alan Towell, on Flickr
Alan
I also check for magnetism occasionally as well and if there is no significant reading then I would not bother
This is a check on a Tascam BR20 - zilch
sticky11 by Alan Towell, on Flickr
Alan
Turntable - Garrard 401/Jelco 750L/Ortofon Kontrapunkt B, Pioneer PLC 590, Micro Sieki MA505 , Denon DL103R - DIY Paradise Phono stage - Reel 2 Reel Studer A810, Otari MX55,Tascam BR20, Revox A77, B77, PR99, TEAC X1000 & 3440, Digital HTPC / Young Dac - Preamp - DIY B4, 821, Power Amp's DIY Avondale NCC300 Mono Block, Speakers Wilmslow Kit Volt BM220.8 / Scanspeak D2905/9500
Turntable : Project 2 Xperience Tone Arm & Cartridge : Project 9c Ortofon 2M Blue Phono Stage : Project Phono Box SE II Digital Source :Primare CD21 Integrated Amp : Primare I30 Speakers : ProAc 110 Headphones : Beyerdynamic DT770 Pro
Revox A77 MK IV 2 track 15 & 7 1/2 IPS
TEAC A-3300SX 4 track 7 1/2 & 3 3/4 IPS
Akai 4000DS MkII
Yes that’s the one and the DeMag I use, the indicator is a Gauss meter.
They have gone up quite a bit since I bought mine but they are excellent
There is no straight answer to how many hours I'm afraid ?.
The last I noticed some magnetism on my Studer was after removing the head block to adjust the capstan roller pressure. Whilst I had the block out I thoroughly cleaned and polished the heads when I put it back together I noticed a little magnetism but it could have been caused by a little carless use of the Allen keys to remove the head block and adjust the Capstan roller solenoid.
Anyway after a demag - Ziltch
Alan
Last edited by 337alant; 26-07-2017 at 16:06.
Turntable - Garrard 401/Jelco 750L/Ortofon Kontrapunkt B, Pioneer PLC 590, Micro Sieki MA505 , Denon DL103R - DIY Paradise Phono stage - Reel 2 Reel Studer A810, Otari MX55,Tascam BR20, Revox A77, B77, PR99, TEAC X1000 & 3440, Digital HTPC / Young Dac - Preamp - DIY B4, 821, Power Amp's DIY Avondale NCC300 Mono Block, Speakers Wilmslow Kit Volt BM220.8 / Scanspeak D2905/9500
Turntable : Project 2 Xperience Tone Arm & Cartridge : Project 9c Ortofon 2M Blue Phono Stage : Project Phono Box SE II Digital Source :Primare CD21 Integrated Amp : Primare I30 Speakers : ProAc 110 Headphones : Beyerdynamic DT770 Pro
Revox A77 MK IV 2 track 15 & 7 1/2 IPS
TEAC A-3300SX 4 track 7 1/2 & 3 3/4 IPS
Akai 4000DS MkII