Analogue Productions Ultimate Analogue Test LP

Side 1General Reference LevelThis 1 kHz reference tone will allow you to establish a “base level” for all measurements.Track 1 1Khz reference tone 7cm/s Mono, in phase (Lateral)Basic reference for all measurements, adjust meter for maximum convenience (in the studio 0VU).Adjust preamp channel balance for equal output.Also used to check the offset angle of the photo cartridge; L and R signals should be exactly in phase as displayed on an oscilloscope.Azimuth AdjustmentTrack 2 1kHz reference level Left channel onlyMeasure Right channel output.Track 3 1kHz reference level Right channel onlyMeasure Left channel output.The object is to sit the stylus exactly perpendicular in the groove.Twist cartridge about its radial axis until the measurements from Track 2 and Track 3 are equal or very close to equal for both channels.High Frequency AdjustmentTracks 4, 5 and 6 are used to calibrate the RIAA high frequency equalizer of a phono preamp. This will be used to calibrate a mastering lathe’s phono preamplifier or any phono preamplifier that has these adjustments.Track 4 1 kHz tone at -20 below reference level, LateralReference for High Frequency test.Track 5 10 kHz reference tone at -20dbu, LateralAdjust the high frequency until the output level equals that of Track 4.Track 6 1 kHz to 20 kHz sweep at -20dbu, Mono (Lateral)The AC millivoltmeter reading should stay constant across all frequencies. There are a number of factors which can affect frequency response, including cable capacitance, cartridge loading, tracking force and worn parts. Because of this, it can be difficult to achieve perfectly flat frequency response. Sometimes by making small compromises in the 10 kHz adjustment, a better overall frequency response can be achieved.Low Frequency AdjustmentTracks 7 and 8 are used to calibrate the RIAA low frequency equalizer of a phono preamp.Track 7 1 kHz to 20 Hz sweep at 0 VU (Lateral)Play Track 7 and measure the output with your AC millivolt meter.Ideally, the output will be flat across all frequencies. When viewed on an oscilloscope, the amplitude would remain constant during the frequency downsweep.Track 8 100 Hz reference tone at 0 vu (Lateral)Adjust LF Eq to reference (which is your reading from Track 1).Track 9 VTA adjustThis is an IEC intermodulation distortion (IMD) test signal; 60Hz and 4kHz 4:1 ratio.Using an IMD tester, adjust VTA by raising or lowering the tonearm for minimum distortion.Track 10 Standard Wow and Flutter test signal; 3150HzThe Wow and Flutter meter will give dynamic speed variations as a percentage deviation from nominal.Also, the frequency counter should read exactly 3150 Hz for nominal speed. You can use the Hz function on your multi-meter (if so equipped) to verify speed here as well. You can also use to find the measurements at 45RPM. The correct reading at 45RPM would be 4253 Hz (45/33.33) x 3150. Suitable for: Cartridge Type: LP record Made in: USA

Product Analogue Productions Ultimate Analogue Test LP is marked by the EAN code 7530887001188.