What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





Shure M95 HE cartridge

Phono pickup
This is the next-to-the top-of the line Shure pick-up, which incorporates the same stylus as is used in the top-of-the-line model. Overall the sound quality is very good, with slightly hot highs, with user-replaceable stylus (which may also be used by those who now own the M95 pickup) .
A magnetic pickup with a "Hyper-elliptical" stylus and built-in "hinged" stylus guard. Recommended vertical tracking force is 3/4 to 1-1/2 grams and best rsults were attained in the 1-1/4 to 1-1/2 gram range.
The Frequency Response measured ±3 dB from 20 to 15,000 Hz, rising to +4,5 dB at 20,000 Hz. Overall channel balance was within 2 dB. The worst-case stereo separation was 23 dB at 1000 Hz; 20 dB at 15,000 Hz.
This pickup sounds a lot better than it measures.

Specifications
Frequency Response: 20 - 20,000 Hz
Output (at 1,000 Hz):  4,7 mV (at 5 cm/sec peak recorded velocity
Channel Separation:  25 dB at 1 kHz (minimum)
Channell Balance:  within 2 dB
Tip Tracking Force:  0,75 - 1,5 grams
Total Tone Arm Tracking Force (Destaticizer on record):  1,25 to 2,0 grams
Force Exerted by Destaticizer:  0,5 grams
Typical Trackability (in cm/sec. Peak recorded velocity)
400 Hz :  24 cm/sec
1,000 Hz :  33 cm/sec
10,000 :  19 cm/sec
Inductance:  700 millihenries
DC Resistance:  1550 Ω
Optimum Load:  47 Ω 9resistance in parallel with 200 to 300 picofarads capacitance per channel)
Net Weight:  6,4 grams

2 commenti:

  1. Unknown18 maggio 2020 alle ore 01:59

    Con un peso de un gramo, es correcto aplicar una fuerza centrifuga de un gramo y medio. ?? para corregir la centripeta del surco del vinilo.?? Gracias por su atencion.

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    Risposte
    1. Zeus García17 luglio 2021 alle ore 18:05

      Desde aquí parece demasiado. Yo te recomendaría usar el método de SoundSmith para determinar la fuerza a utilizar, pon la aguja en la parte de vinilo liso entre la última canción de la cara y la galleta. Si la tienes demasiado alta, la aguja se irá hacia el exterior del disco, y si la tienes demasiado baja se irá rápidamente hacia el centro. SoundSmith recomienda ajustar la fuerza de modo que la aguja no se mueva, o que se mueva muy muy ligeramente hacia el centro. No sé si me he explicado bien, pero si no te recomiendo buscar dicho método en Google o en YouTube.

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