Audio Database

Picture of VSA 730
Commentary

The AV control center inherits the basic performance of the VSA 930 and is designed with an emphasis on the quality of the center channel such as the same power and quality of the L/C/R channels.

Equipped with Dolby Pro Logic Surround with improved sound localization.
By incorporating a directional enhancement circuit (steering logic) using an active matrix, crosstalk between adjacent channels is suppressed, sound direction and sense of localization are clarified, and more powerful surround is realized.

Three center channel modes are available for selection depending on the quality and settings of the speakers.
Normal distributes low frequencies below 100 Hz to the front L/R, and cuts off the center channel signal below 100 Hz, which is advantageous when using a small center speaker.
Wide is useful when you are using speakers of the same quality for the L, R, and C.
When the center speaker is not used, the center channel signal can be divided into left and right outputs in Phantom mode.

The power amplifier section has introduced a new method that drives the front and center channels with the same power and quality.
Six power transistors for each L/C/R channel are fixed to a large honeycomb heat sink with excellent vibration damping characteristics, and drive with 90Wx3 power.
In addition, the center channel uses a dual-center system that allows two center speakers to be connected, making the sense of direction and orientation of lines and vocals clearer.

It is equipped with an auto input balance function in order to reduce the gap in channel balance for each scene, which occurs in general video software.
By automatically correcting the balance in real time so that the input signal level always matches correctly, crosstalk between channels is suppressed and sound localization is improved.

In addition to Dolby Pro Logic, 3 surround modes are also installed.
Dolby 3 ch logic mode adds the rear speaker signal to the front speaker to create a surround sound field with only the front 3 ch.
In the stadium mode, you can reproduce the feeling of a vast sound field like an outdoor stadium.
In Simulated Surround mode, you can enjoy the sound of live houses and concert halls, and the delay time can be adjusted from 5 to 35 ms in 5 ms steps.
In Studio mode, you can simulate a studio or small hall.

A direct construction design is adopted to make the signal path the shortest distance.
It is equipped with a source direct switch that bypasses the switch contact circuit in stereo mode and is directly input from the function switch to the volume and then directly input to the power amplifier.
In addition, honeycomb chassis, honeycomb heat sink, and large insulator are used to prevent vibration.

Equipped with an output terminal for center woofer.

Equipped with a motor drive electric volume that can be operated by remote control.

Equipped with sound field memory that can store sound field data such as front balance, rear balance, level and surround mode.

Equipped with a test tone key convenient for adjusting the volume balance of each channel.

It comes with an AV programmable remote controller with a learning function that can control your VTR, TV, and audio equipment with a remote control.

Model Rating
Type Dolby Pro Logic Surround Built-in AV Control Center
<Audio section>
Maximum Practical Output (EIAJ, 6 Ω)
Stereo : 145W+145W
In a round Front : 90W + 90W
Rear : 24W + 24W
Center : 90W
Rated output
CD Direct, front : 90W + 90W (6 ohm, 20 Hz to 20 kHz, 0.02%)
In a round Rear : 10W + 10W (6 ohm, 20 hz to 7 khz, 0.08%)
Center : 55W (6 Ω, 20 Hz to 20 kHz, 0.04%)
Signal-to-noise ratio Phono MM:72dB
CD, Tuner, Tape1/DAT1, Tape2/DAT2, VDP, VCR1, 2, TV, Video : 96 dB
Damping factor 100 or More (1 kHz, 6 Ω)
Input Sensitivity / Impedance Phono MM : 2.5mV/50k Ω
CD, Tuner, Tape1/DAT1, Tape2/DAT2, VDP, VCR1, 2, TV, Video : 150mV/30k Ω
Maximum allowable input Phono MM : 110 mV (1 kHz, 0.1%)
Frequency characteristic Phono MM : 20 Hz to 20 kHz ± 0.3 dB
CD, Tuner, Tape1/DAT1, Tape2/DAT2, VDP, VCR1, 2, TV, Video : 5 hz to 100 khz + 0 -3dB
Output Level / Impedance Tape Rec, VCR Rec : 150mv/2.2k Ω
Tone control Bass : ± 8 dB (100 Hz)
Treble : ± 8 dB (10 kHz)
Muting - ∞ dB
Loudness contour 100Hz:6dB
10kHz:3dB
Surround Section
Sensitivity / Impedance Power in : 1V/47k Ω
Level / Impedance Pre out : 1V/2.2k Ω
Frequency characteristic 20 Hz ~ 6 kHz + 0 -3dB (VDP, Surround OUT, Dolby Position)
<Video Part>
Input Sensitivity / Impedance VCR1, 2, VDP, TV, Video : 1Vp-p/75 Ω
Output Level / Impedance VCR1, 2, Monitor : 1Vp-p/75 Ω
Frequency characteristic VCR1, 2, VDP, TV, Video Monitor : 10 hz to 10 mhz + 0 to 3 db
DG/DP 3% / 2 °
Signal-to-noise ratio 60dB
<S terminal portion>
Input Sensitivity / Impedance
VCR1, 2, VDP Luminance Signal : 1Vp-p/75 Ω
Color Signal : 0.286Vp-p/75 Ω
Output Level / Impedance
VCR1, 2, Monitor Luminance Signal : 1Vp-p/75 Ω
Color Signal : 0.286Vp-p/75 Ω
Luminance signal frequency characteristic 10 Hz to 10 MHz + 0 -3dB
Signal-to-noise ratio Luminance signal : 60 dB
<General>
Power consumption 230W (Electrical Appliance and Material Control Law)
External dimensions Width 420x Height 126x Depth 351 mm
Weight 9.7kg
Attachment Programmable Remote Controller CU-VSA007