Technics SH-3400

Commentary

With the AFD (Acoustic Field Dimension) control and the phase shift selector, this 4-channel control center can be used as a matrix 4-ch decoder of any system, and can create a sound field that matches the music and room.

Equipped with an AFD control, with the left knob you can adjust the width from left to right and with the right knob you can adjust the depth from front to back.

Equipped with a 4-channel selector, you can choose a phase shift angle that is closely related to the spread and orientation of the rear.
In the Small Hall, the left and right of the rear are in-phase, the rear sound is clearly localized, and the sound image is clear.
In Natural, the rear is 90 ° out of phase with each other, and sounds heard from behind, such as echo sound, have a natural spread.
In the Large Hall, the rear has a phase difference of 180 °, and the rear sound has an extreme spaciousness.
Stage matches the position of the listener with that of the performer.

Two input terminals for discrete 4 ch are installed.

Volume and balance of 4 channels can be controlled with this 1 unit.

Equipped with a Rec Out connector that can record in 4 channels.

Equipped with connection terminal for 2 ch tape deck.

Equipped with a mode switch for switching between 2 ch and 4 ch.

Equipped with two 2 ch input terminals (Low and High).

A separately sold 4 ch balancer can be connected.

Model Rating

Type	4-channel control center
Circuit system	4-ch decoder with AED control
Rated output	100mV
Maximum power output	2V
Output impedance	15k Ω
Input Sensitivity / Impedance	4 ch Discrete : 100mV/40k Ω 2 ch (Low) : 100mV/50k Ω 2 ch (High) : 1000mV/160k Ω
Tape monitor	Rec Out:100mV Playback : 100mV/50k Ω 4 ch Rec : 100mv/10k Ω
Frequency characteristic	20 Hz ~ 20 kHz + 0 -3dB
Attachment	Mode Switch (4 ch ⇔ 2 ch) 4 ch balancer connection terminal Tape monitor switch
Semiconductor used	Transistor : 9 Diode : 1
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	2W
External dimensions	Width 200x Height 140x Depth 250 mm
Weight	2.8kg