Vinyl Essentials – The Ultimate Pickup Test Record – Vinyl LP 180gr
Δίσκος βινυλίου 180gr για δοκιμές και ρυθμίσεις πικάπ.
Ο δίσκος βινυλίου δοκιμών 180gr, Vinyl Essentials – The Ultimate Pickup Test Record, της Image HiFi απευθύνεται ειδικά στο Πικάπ, την Κεφαλή και την Βελόνα του…και φυσικά στους φανατικούς του αναλογικού ήχου!
Το LP Vinyl Essentials, είναι απαραίτητο για όποιον θέλει την ακριβή ρύθμιση του συστήματος αναπαραγωγής του και είναι ένα εργαλείο που θα μας δώσει τη δυνατότητα να αξιοποιήσουμε στο έπακρο τη μουσικότητα και τον καλό ήχο των βινυλίων μας!
Ο δίσκος βινυλίου δοκιμών, είναι φτιαγμένος από πολύ υψηλής ποιότητας 100% παρθένο βινύλιο 180gr … ένα απαραίτητο εργαλείο για τους τελειομανής λάτρεις του βινυλίου!…
Mastered on 180 Grams 100% virgin vinyl by Pallas, Diepholz.
Mastered at Emil-Berliner Studios, Hannover, Germany.
Image Verlags GMBH Gröbenzell, Germany.
1. Channel identification
2. Phase test
3. Cross-talk test
4. Cross-talk test
5. Tracking ability test
6.Tonearm-cartridge resonance test (16-14-12-10-8 & 6 Hz)
1 .Tracking ability test
2. Tracking ability test
Having confirmed a well-defined central image with the in-phase pink noise tests, we move on to a method of checking the crosstalk between the channels.
On Track 3, a burst of pink noise is recorded on the left channel only alternating with a low-level reference burst of pink noise at -25dB recorded on the right channel only.
By muting your left channel (unplugging the left channel to your pre-amp or using your balance control) you hear on the right channel only the crosstalk from the left channel alternating with the reference burst.
If they are both at the same volume, then your crosstalk is -25dB.
The test is repeated with -30dB and -35dB reference bursts.
Track 4 repeats the test for the right-to-left crosstalk measurement – remember to mute the right channel this time.
The point of all this is that if there is a significant difference in crosstalk between the left and right channels, it indicates that your cartridge is probably misaligned vertically.
Viewed from the front, your stylus should be exactly perpendicular to the surface of the record.
If your arm has an adjustment to rotate the headshell to achieve this, all well and good. If, however, your headshell is fixed,instead of using a Mole wrench on your cartridge, you can use thin shims of paper or washers between the cartridge and the headshell to achieve the desired effect.
Next comes the test that strikes fear into all cartridge manufacturers – the Tracking Ability Test.
This is simply a tone recorded with increasing amplitude ranging from a 40 microns peak-to-peak sinusoid cut in the vinyl to 100 microns in 10 micron steps.
When the cartridge starts to mistrack, a very clear buzzing is heard.
This is an extreme test for your system and this test is repeated twice on side two for the reasons previously mentioned.
The Tracking Ability Test can assist in setting the tracking weight but this should be within the range recommended by the manufacturer of your cartridge.
Too low a tracking weight will result in poor tracking and do more harm to your records than erring on the high side, but don’t overdo it.
Tracking ability isn’t everything and will very much depend on your tonearm and cartridge combination. The Tonearm-Cartridge Resonance Test to be discussed later will indicate how well your arm matches your chosen cartridge.
Last, but not least, is the Tonearm-Cartridge Resonance Test.
Every combination of arm and cartridge has a natural resonant frequency, which should be about 10Hz. If it is much higher than this, it will intrude intrude into the low frequencies of the recording, such as low organ notes.low organ notes.
If much lower, the harmonics of this could intrude into the audible spectrum.
It is the combination of effective mass and compliance that results in a particular resonant frequency and also has an impact of the tracking ability.
Track 6 consists of an audible tone that is modulated with a sub-audible low frequency – the frequency that is being tested.
If the arm is not resonating, the tone will sound constant.
At resonance, the tone ‘warbles’ and the arm and cartridge can actually be seen to vibrate.
The track has six tests ranging from 16Hz down to 6Hz and a sequence of introductory short or long ‘beeps’ tell you which frequency is being tested.