Hi. Maybe this will be of some help to you . I have a moth Rega- 301 tonearm I am using a Denon Anniversary 103 cart, a Denon DL-304 and a Denon DL-S1 cart with this arn. I am using a aftermarket VTA adjuster. I am not having any problems with these cartridges. You can find the specs for these carts to compair with the AT cart from Needle Doctor which I am sure you know about, hope this might help.David
AT OC9 MK3 compliance to high for a Rega RB 1000?
Hi everyone!
Purchased a Rega P9/RB1000 about a month ago and have been researching many low output mc cartridges. My phono preamp is an Allnic H-1200 and the AT-OC9 has been a very successful match in other systems. As most of us know Rega does not give the effective tonearm mass for the RB1000. Audio Technica states a dynamic compliance of 18cu at 100Hz. To get the standard 10Hz number you need the dynamic compliance of 18cu x (1.5?) = 27cu. If you estimate the effective mass of the RB1000 at 12g?+ 8g OC9 +.5g mounting screws = 20.5g/27cu = 6.765Hz resonance frequency. This falls way below the acceptable 8Hz cutoff. I would appreciate any comments from P9 owners or any analog experts out there, since my calculations might be wrong.
Thx in advance,
Evan
Purchased a Rega P9/RB1000 about a month ago and have been researching many low output mc cartridges. My phono preamp is an Allnic H-1200 and the AT-OC9 has been a very successful match in other systems. As most of us know Rega does not give the effective tonearm mass for the RB1000. Audio Technica states a dynamic compliance of 18cu at 100Hz. To get the standard 10Hz number you need the dynamic compliance of 18cu x (1.5?) = 27cu. If you estimate the effective mass of the RB1000 at 12g?+ 8g OC9 +.5g mounting screws = 20.5g/27cu = 6.765Hz resonance frequency. This falls way below the acceptable 8Hz cutoff. I would appreciate any comments from P9 owners or any analog experts out there, since my calculations might be wrong.
Thx in advance,
Evan
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