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





Harman/Kardon HK 715 tuner

High Technology Digital Tuner
The HK 715 represents the state-of-the-art. In tuners today. Digital quartz-locked tuning is by far the most accurate tuning system available. Because the digital control system automatically locks in to the dead center of the broadcasst frequency every time. There's no guessing, no fine tuning.
The HK 715 also lets you store up to 8 of your favorite stations either AM or FM in memory. Once a station has been stored, you simply touch the appropriate preset memory buttonto recall it at any time.. Without the need to scan in either direction.
The HL 715 also shares many of the same features that make our KH 710 such an outstanding tuner. Like a precise balance between sensitivity and selectivity. And an MPX null circuit, which canceles the 19 kHz subcarrier signal with less distortion than filters.

Specifications
Usable Sensitivity:  1,7 µV (IHF)
50 dB Quieting [mono/stereo]:  3,0 µV / 34 µV
Signal-to-Noise Ratio:
Mono :  -79 dB
Stereo :  -77 dB
Total Harmonic Distortion:
Mono :  0,07%
Stereo :  0,09%
Capture Ratio:  1,0 dB
Alternate Channel Selectivity:  70 dB
Image Rejection:  80 dB
IF Rejection:  105 dB
Spurious Response Rejection:  105 dB
AM Rejection:  65 dB
Stero Separation:  50 dB aat 1 kHz
Output level/Impedance:  780 mV/2 k Ω
AM Usable Sensitivity:  200 µV/m
AM Signal-to-Noise Ratio:  -60 dB
Am Selectivity:  40 dB
AM Alternate Channel Selectivity:  37 dB
AM Image Rejection:  50 dB
AM IF Rejection:  45 dB
Dimensions (W x H x D):  385 x 72 x 320 mm (15,2" x 2,9" x 12.6")
Weight:  4,2 kg (9,25 lbs)

Nessun commento:

Posta un commento