My TG 1020 has had the 4.75 cm/s speed push switch modified, so that it functions as 38 cm/s speed.
I see that there is an additional push button switch that has been added on the left side of the 4.75 cm/s switch and it is glued to the 4.75 cm/s switch body.
The additional switch has been mechanically coupled (by a twisted/soldered wire) connecting from the 4.75 cm/s switch operating shaft to the new switch operating shaft, so when the 4.75 cm/s switch is operated, it also operates the additional switch.
Does anybody have any more details on this modification please ?
David
TG 1020 Tape Speed Modification
Re: TG 1020 Tape Speed Modification
Hi David,
I have no idea what these modifications can be.
I myself tried several things to get the TG 1000 to 38 cm/s speed. But with the original capstan and 24 V voltage you never get 38 cm/s. You can modify the electronical circuits by changing resistors and their values. But without increasing the 24 V voltage beyond 30 V you will kill the capstan. My cousin tried another way. He installed a wheel with a bigger diameter on the capstan and then he could manage to get 38 cm/s. This worked with the 24 V supply.
Second problem is to change the record and playback curves in the record and playback amplifiers to get an overall flat record/playback frequency response.
regards,
Raimund
I have no idea what these modifications can be.
I myself tried several things to get the TG 1000 to 38 cm/s speed. But with the original capstan and 24 V voltage you never get 38 cm/s. You can modify the electronical circuits by changing resistors and their values. But without increasing the 24 V voltage beyond 30 V you will kill the capstan. My cousin tried another way. He installed a wheel with a bigger diameter on the capstan and then he could manage to get 38 cm/s. This worked with the 24 V supply.
Second problem is to change the record and playback curves in the record and playback amplifiers to get an overall flat record/playback frequency response.
regards,
Raimund