Changing loading isn't going to help your bottom end much. It basically just changes the top end.
Perhaps play with VTA and VTF instead?
Source for resistors for an acoustech/sutherland phono preamp
Could someone give me a link to buy resistors 47k and under. I bought some but they are much bigger than what they replaced. I have an Ortofon black that I’m tweaking by using resistors under 47k. I’m trying to expand the bottom end. The ortofon specs call for 50k to 200k loading. I’ve read that under 50k is optimal. I know this sounds wrong and contradicts Ortofon but I can't get the bottom end that my Dynavector 20x2 had. The resistors are an easy switchout but the ones I got from Parts Connexion are huge. About 10 times or more larger. Would the size affect performance?