Search this site

Labels

4-channel ACCUPHASE ACOUSTIC ENERGY ADC ADCOM ADS ADVENT AIFAI AIWA AKAI AKG Alchemist ALIANTE ALLISON ALTEC LANSING AMPEX amplifier AMPLIFON ANCIENT AUDIO AR ARCAM ARISTON ARMONIA AUDIA AUDIO ACADEMY AUDIO ANALOGUE AUDIO DYNAMICS AUDIO INNOVATIONS AUDIO NOTE AUDIO RESEARCH AUDIO-TECHNICA AUDIOLAB Audiostatic AUGUSTA AVALON AVID AXIOM B-I-C Bang & Olufsen BASF BASSOCONTINUO Bell Belt-Drive BEVERIDGE BEYER-DYNAMIC BOSE BOSTON BOWERS-WILKINS BOZAK BRAUN BRIONVEGA BSR California Audio Labs CAMBRIDGE CANTON cartridge CARVER CASTLE CD Player CD Transport CEC CELESTION CEMARK Centrex CERWIN-VEGA CHARIO CHARTWELL CIZEK CLARION CONRAD-JOHNSON COPLAND CORAL CORAL ELECTRONIC CREEK CROWN CYBERNET CYRUS DAC DAHLQUIST DALI DAT DBX DECIBEL DENON DIAPASON direct-drive Ditton DOKORDER DOMA DUAL DYNACO DYNAUDIO DYNAVECTOR EISA ELAC ELECTRO-VOICE EMPIRE EMT EPI EPICURE EPOS ES Series ESB Esotec ESOTERIC ESS EUMIG FAIRCHILD FOSTEX GALACTRON GALE GARRARD GENELEC GENESIS GIUSSANI RESEARCH GOLDENOTE GOODMANS GRAAF GRUNDIG H.H. SCOTT HAFLER HARBETH HARMAN/KARDON headphones HEATHKIT HECO HIRTEL HITACHI HPM idler INDIANA LINE INFINITY italian JAMO JANSZEN JBL JEFF ROWLAND JENSEN JMLAB JVC KEF KENWOOD KLH KLIPSCH KOSS KRELL KYOCERA LAE Lafayette lathe LEAK LECTOR LENCO LESA linear LINN loudspeaker LOWTHER LUXMAN LYNGDORF MAGNEPLANAR MARANTZ MARK LEVINSON MARTEL MARTINLOGAN MARUNI MASH MAXELL MBL McIntosh McLAREN MERIDIAN MERITON MICRO SEIKI MICRO-ACOUSTICS MIRAGE MISSION MITSUBISHI MONITOR AUDIO MONRIO MORDAUNT-SHORT MUSICAL FIDELITY MYRYAD NAD NAGRA NAKAMICHI NHT NIKKO NORESCO NOVA ONKYO OPERA OPTONICA ORTOFON PANASONIC PARADIGM PATHOS PEARL PHASE LINEAR PHILIPS PICKERING pioneer POLK AUDIO Power-amplifier Pre-amplifier Pre-phono Pro-Ject PSB QUAD quadraphonic RADFORD RCF receiver Reel to Reel REK-O-KUT REVOX ROGERS ROKSAN ROTEL ROYD RUARK SACD SAE sansui SANYO SENNHEISER SHARP SHERWOOD SHURE SIARE SIGNET SME SOMA SONAB SONUS FABER SONY SOTA Soundcraftsmen SPECTRAL Spica STANTON STAX Stereo 8 STILE ITALIANO STRUSS SUGDEN SUPERSCOPE Synthesis TAC TAD TAMON TANDBERG tangential TANNOY TASCAM TDK TDL TEAC TECHNICS THE FISHER THIEL THORENS tonearm TOSHIBA TRANSCRIPTOR TRIO tuner turntable ULIX Uni-Q UNISON RESEARCH unitra UREI UTAH VANDERSTEEN VOCE DIVINA VPI WADIA WHARFEDALE XAVIAN YAMAHA ZENITH ZINGALI

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





Aiwa AX-7800 receiver

DC Stereo receiver with Digital Quartz Synthesiser Tuning

Now Aiwa proudly introduces an exceptional high fidelity receiver designed to make tuning faster, easier and more accurate than ever; the revolutionary new AX-7800. with the same quartz locked digital-synthosized tuning system utilized on the most sophisticated and expensive FM tuners available today.
Now perfect tuning is as simple as pressing a button There's no more fumbling or fidgeting with tuning knobs, dials and center tuning meters. The new Aiwa AX-7800 simply doesn't have any.
Instead, it provides an instant digital readout that's perfectly tuned to the actual station frequency being received.
Drift is impossible. Because Aiwa's quartz crystal oscillator locks instantly and precisely into the center of each succeeding station's assigned frequency. Now when you tune the Aiwa AX-7800, you stay tuned. With unerring accuracy that even separates weaker stations from their stronger neighbors. Something no conventional receiver with AFC can do.

Aiwa's new AX-7800 is loaded with features; like memory Tuning that lets you preset up to 6 FM and 6 AM stations. Like a highly visible 9-point LED peak power bar graph. Like independent bass and treble frequency turnover controls.
And the AX-7800's DC-power amplifier gives you 60 Watts per channel RMS at 8 ohms from 20 Hz to 20 kHz, with no more than 0,05% T.H.D.
Right now, almost no receivers have all these advanced features.
Features:
Quartz PLL synthesizer tuning
Automatic tuning
Manual scan selection
Auto search hold tuning
Direct selector key

DC amplifier design means optimum sound quality at all frequencies
By the use of classic DC design in the power amplifier section, deterioration of low-frequency sound components due to phase shift is largely avoided, giving the AX-7800 superbly flat reproduction characteristics all the way down to DC (0Hz). Total Harmonic Distortion is kept to a completely inaudible 0,05% from 20 to 20,000 Hz at rated output, and the 3-stage differential amplifier circuit also assures superior signal-to-noise performance from tuner, turntable orother sources.

High performance equalizer amplifier.
Employing a newly developed plus-minus split power supply IC, the dual FET differential amplifier used for phono cartridge reproduction assures close adherence to the RIAA reference curve, as well as a high signal/noise ratio of 80 dB. The 200 mV maximum phono input provides dynamic margin with any type of high quality MM cartridge.

Specifications
FM Tuner Section
 usable Sensitivity:
Mono :  10,8 dBf (1,9 µV)
Stereo : 17,2 dBf (4 µV)
50 dB Quieting Sensitivity:
Mono :  17,2 dBf (4 µV)
Stereo :  36,0 dBf (35 µV)
Signal-to-Noise ratio:
Mono :  75 dB
Stereo :  70 dB
Capture Ratio:  1,5 dB
Alternate Channel Selectivity:  70 dB (±400 kHz)
Image Rejection:  75 dB
IF Rejection:  90 dB
Spurious Rejection:  100 dB
AM Suppression: 55 dB
Total Harmonic Distortion
Mono :  0,4% (at 1 kHz)
Stereo :  0,5 5 (at 1 kHz)
Frequency Response:  30 - 15,000 Hz (+0,5 -2 dB)
Stereo Separation:  4 dB at 1,000 Hz
Subcarrier Suppression :  57 dB
Antenna Terminals:  300 Ω (balanced), 75 Ω (unbalabced)
AM Tuner Section
Sensitivity (External antenna)
3 Band Type :  30 µV
2 band Type :  25 µV
Signal-to-Noise Ratio:  55 dB
Selectivity:  30 dB
Image Rejection:  50 dB (at 1,000 Hz)
IF Rejection:  35 dB (at 1,000 Hz)
Power Amplifier Section
Continuous power Output:  60 W x 2 (20 Hz - 20 kHz, T.H.D. 0,05%)
Total Harmonic Distortion:  0,05% (at effective power output 8 Ω)
IM Distortion:  0,05%
Damping Factor:  50 (8 Ω)
Residual Noise:  0,5 mV 98 Ω)
Preamplifier Section
Input Sensitivity/Impedance
Phono 1 :  2,5 mV / 47 k Ω
Aux 1 :  150 mV / 47 k Ω
Tape 1 :  150 mV / 47 k Ω
Phono Overload:  200 mV 91 kHz, THD0,1%)
Frequency Response:
Phono :  30 Hz - 15 kHz ±0,5 dB
Aux, tape :  10 Hz - 50 kHz  +1 -3 dB
Tone Control Range
Bass :  ±6 dB at 100 Hz (Turnover Frequency 200 Hz); ±9 dB at 100 Hz (Turnover Frequency 400 Hz)
Treble :  ± 9 dB at 10 kHz (Turnover Frequency 2,5 kHz); ±6 dB (Turnover Frequency 5 kHz)
Loudness Control:  9,5 dB (100 Hz); 12 dB (10khz)
Signal-to-Noise Ratio: 
Phono :  80 dB
Aux, Tape Input:  100 dB
Power Supply:  120, 220, 240 V; 50/60 Hz
Power Consumption:  160 W
Dimensions (W x H x D):  500 x 120 x 440 mm (19-11/16" x 4-3/4" x 17-3/8")
Weight:  10,5 kg (23,1 lbs)
Nessun commento:
Labels: , ,
Iscriviti a: Post (Atom)