Tracking Weight of a portable gramophone
Posted: Mon Mar 02, 2020 4:35 pm
My "new" portable gramophone arrived today. I'm not sure who made it; there's a label near the brake that reads "Handel Concert". I bought it because it has a Garrard (no 12) motor and a Thorens reproducer. Being a Hi-Fi enthusiast, I've owned a Thorens TD-160 turntable since the 1980s and recently acquired an old Garrard SP25 Mk III deck to play my 78 discs. The modern cartridge I'm using is an Audio Technica AT3600L which tracks at up to 3.5 grams and I've fitted a special 78 rpm stylus. I also have an old Shure SC35C cartridge (popular with DJs) which tracks at up to 5 grams. This was used by BBC Radio 3 in the late 1970s to reduce LP surface noise.
The reason I'm writing is because I just measured the tracking weight of the portable gramophone (using a digital kitchen weighing scale) and it tracks at 157 grams! Boy did that give me a shock. I thought 5 grams was heavy but 157! No wonder those steel needles wear down after one side (I checked a new needle after playing one side and it definitely showed at least two flats).
My question is this: who would risk playing any valuable gramophone records on a vintage gramophone? Surely if you want to preserve your valuable 78 collection then you need to play these discs on a modern record player with a 78 rpm cartridge.
The reason I'm writing is because I just measured the tracking weight of the portable gramophone (using a digital kitchen weighing scale) and it tracks at 157 grams! Boy did that give me a shock. I thought 5 grams was heavy but 157! No wonder those steel needles wear down after one side (I checked a new needle after playing one side and it definitely showed at least two flats).
My question is this: who would risk playing any valuable gramophone records on a vintage gramophone? Surely if you want to preserve your valuable 78 collection then you need to play these discs on a modern record player with a 78 rpm cartridge.