Here is something on record EQ: https://midimagic.sgc-hosting.com/mixphono.htm
From the above I think the bass turn is 300 Hz as opposed to 500 Hz in RIAA. I think I would have to hear the playback EQ switched AB while the record is playing to notice the difference. Likewise I think I would also need the AB test with the record playing to notice the difference between the ~13 db @ 10 KHz of RIAA and the 16 dB listed for the Columbia.
Your 78 U-tube videos are really good! I have to believe you aren't just pointing an i-phone at the record player. Can you give a little tutorial on how to do what you did?
BMRR wrote: ↑28 Aug 2019 13:40I've heard the CD version and it does sound great. The most noticeable difference is the lack of pops/clicks and surface noise, of course. If you set that aside, the overall sound quality isn't all that difference than the 78, which is a testament to how good 78s sounded toward the end of 78 production.
I'm not sure what curve Columbia used for 78s in 1950 but I think it must have been pretty close to RIAA because it sounds great through my RIAA preamp without any additional equalization.