I'm new to the posting on this forum, but have been following so many different threads. There's a wealth of knowledge (and opinions) on here!
Now that's out of the way, I recently got the AT120 and found it out of the box to be suuuuper dull. I was quite dismayed. But thanks to the forum and the ideas of what to fix and what to try, I've gotten the sound to a great place.
So if anyone still looks at this thread or finds it in the future, they can rest assured that decent sound is possible from this little machine.
1: putty on the underside of the platter to deaden that godawful ring. Tried to keep the distribution even so as not to induce wobble (see number 2).
2: platter was pretty wobbly out of the box. Luckily someone suggest reseating the platter after rotating a quarter turn or so each time and running the turntable to see which position achieved the least wobble. I got lucky on the first try, tons of wobble to barely any with 1/4 rotation of the platter.
3. Fixed the antiskate issue. The disassembly was somewhat delicate, but the previous posters have great pictures. Cut the spring down to 1/4 of it's original size. Anti-skate works as it should (still at around 5 for a 2g of tracking pressure). But hey, it works, I/m happy.
4. while inside for anti-skate, dropped some putty on the plinth where there seemed to be lots of space and thing plastic as well as in various corners of the bottom.
5. O-rings on the tone arm. Great and "easy" addition. Somehwat difficult to get the o rings over the collet for the headshell, but once theyre on, great sound abounds.
6. New mat and record weight, set up, and damn this thing sounds clean, tight, and airy. AT probably tried to save money on these issues, or just designed the thing poorly, but man what a difference a little elbow grease and patience got me. Also, most of the additional things (weight etc) can go to a new turntable in the future, so not much "extra" funds went into this.
7. Havent removed the pre yet. My main receiver is in the shop and the phono in on my backup doesnt work, so thankfully there's a line option!
Cant wait to get my CR1020 back, pull the AT120 pre out, and hardwire some new RCAs to this thing. THEN it will be complete and I can stop scouring boards for ideas of things to tinker with!
cheers