I am in the process of converting old reel-to-reel and cassette tape recordings to digital. One reel-to-recording from the early 70’s of my first band is real weak. When I amplify the sound the tape rumble is also amplified. I’ve tried EQing out the lows & highs and compressing. But, the rumble is still overwhelming and must be sharing the mid range of the vocals. A faint guitar is present and maybe a bass but I can’t hear it. I do not remember what recorder was used for the original mono recording but I am playing it back on Akai GX-747 without Dolby NR and sending it to Sonar 7 thru a Sonar V-Studio 100. I have not tried cleaning it up in Sonar 7 yet because I am still trying to improve the input signal first. What would you do to rescue this important memory?
It's also possible that the number of tracks on the recording doesn't match the number of tracks on your Akai-GX747. Remember that both 2-track 2-channel stereo and 4-track 20-channel stereo recorders were common in the 1970's.