![]() ![]() Click to expand.I have those three, as well as a couple of Stereo Review test LPs from the 1970s and a couple of the HFNRR records.The pink noise passages are useful for checking phase and tracking, and the response sweeps are pretty conclusive. I used to use a HP-400 Meter a pencil and some graph paper to record my results.I have the following test records:CBS STR 100 - Professional Test RecordCBS STR 112 - Square Wave Tracking & IMCBS STR 120 - Wide Range Pickup TestCBS STR 130 - RIAA Frequency ResponceCBS STR 170 - 318-MicroSecond Frequency ResponseShure TTR 102 - Phono Cartridge Test RecordShure TTR 103 - Phono Cartridge Trackability. Click to expand.I've been able to get cartridges that flat as well with my Levinson preamp. I was floored by how accurate it was.BTW, there are software programs that will just take the raw output of a turntable and apply a 'virtual' RIAA curve to it to apply the correct playback EQ after the fact. What specific test record are you using? If it's a name-brand - CBS Labs had some great ones in the 1960s and 1970s, and even the newer ones from Hi-Fi News & Record Review are good - it should be fine.Every time I've played back the test signals through my Krell KSP-7B preamp, it's flat within about.1dB all the way to about 18kHz or so (the limits of the signals).
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