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The Ultimate Analogue test-LP. Perfekt tillsammans med Fozgometern. En suverän Test-LP och den byter spår själv vilket är en befrielse!
Sid 1 spår 1-3 används tillsammans med Fozgometern. Vill du veta mer i detalj så gå till Analogue Produktions hemsida.
Spår 2 och 3 på sid 2 kan användas för att demagnetisera pickupen. Används också för att "spela in" en ny pickup. Spela dessa spår 5 till 10 gånger efter varje 300 timmars normal avspelning av skivor.
Spår 6 på sid 2 är intressant för att testa hur isolerad din skivspelare är mot omgivningen.
"The Ultimate Analogue Test LP from Analogue Productions is something that could only have been dreamed of a few years ago. Now it's a reality and an indispensable tool for setting up and getting the most from your vinyl rig. It's 'all about the music' for us vinyl lovers and I can't imagine how we ever did without something like this for so long! Bravo to Analogue Productions/Acoustic Sounds for making this the true Ultimate set-up disk, a tool that will enable us to get the most music and good sound from our record collections." – Steve Hoffman, mastering engineer
Tillverkarens uppgifter (något förkortat):
Side 1
General Reference Level
This 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&R signals should be exactly in phase as displayed on an oscilloscope.
Azimuth Adjustment
Track 2 1kHz reference level Left channel only
Measure Right channel output.
Track 3 1kHz reference level Right channel only
Measure 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 Adjustment
Tracks 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.........
Low Frequency Adjustment
Tracks 7 & 8 are used to calibrate the RIAA low frequency equalizer of a phono preamp...........
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Track 9 VTA adjust
This is an IEC intermodulation distortion (IMD) test signal; 60Hz & 4kHz 4:1 ratio.
Using an IMD tester, adjust VTA by raising or lowering the tonearm for minimum distortion.
Track 10 Standard Wow & Flutter test signal; 3150Hz
The Wow & Flutter meter will give dynamic speed variations as a percentage deviation from nominal.......
Side 2
Track 1 Anti-skating test; 315Hz amplitude sweep to +12dbu (Lateral)
Signal should remain clean in both channels up to the highest level, both audibly and as viewed on an oscilloscope.........
Track 2 Pink noise lateral
Track 3 Pink noise vertical
Used for cartridge “demagnetizing”
You can also use this track to loosen up the cantilever’s suspension to help break in a new cartridge. Play these tracks five to ten times after every 300 hours of normal LP playback.
Track 4 1kHz @ reference level, vertical
This out-of-phase signal should cancel to nothing when summed to mono.
Any signals still present are distortion artifacts, lack of channel balance, or timing (phase) anomalies. This test can be a second confirmation of anti-skate adjustment.
Track 5 1kHz to 10Hz sweep @ -20 below
reference level, vertical
Resonance anomalies in the tonearm / cartridge interface will show up as amplitude peaks and dips as the frequency sweeps down.
Once again, by listening in ‘Mono’ it is easier to hear the distortion artifacts.
Track 6 Silent groove for bearing rumble and table isolation
During playback of this track, nothing should be transmitted from the turntable to the speakers. Replay the track and gently tap on the rack or base that the turntable is resting on. There should be little or no thump transferred to the speakers. This track will help you experiment with turntable isolation methods and products to be able to get the most out of your playback system. You may want to use a closed or sealed headphone for best listening results, or a stethoscope on the plinth.
