Technics SH-3434
¥ 62,000 (around 1973)
Commentary
In addition to the discrete AFD control function on the SH 3400, it also incorporates an AFD scope that allows you to visually check the 4 ch sound field. This is a full-scale control center for the 4 ch era.
It uses a unique AFD scope that allows you to visually confirm the sound field of the four channels. This allows you to make adjustments such as phase switching, volume, and front-back balance necessary for precise four channel playback.
It can be used not only for 4-channel sound fields, but also for waveform check of each channel and for oscilloscope for observation.
The discrete sound field can also be controlled freely.
Equipped with a phase selector switch.
It is equipped with recording and reterminal for 4 ch tape deck.
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Model Rating
| Type | 4 ch Visual Control Center |
| Circuit system | AFD Control with AFD Scope 4-channel control center |
| Decoder and 4-ch Amplifier Unit | |
| 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 | 2ch Rec Out:100mV Playback : 100mV/50k Ω 4ch Rec Out:100mv Playback : 100mV/40k Ω |
| Frequency characteristic | 20 Hz ~ 20 kHz + 0 -3dB |
| <4 ch Control Unit> | |
| 4ch Selector | Discrete1, 2 : Discrete 4-ch input switching Matrix/Natural/Small Hall/Large Hall/Stage : Realistic effect switching |
| AFD (matrix Both discrete and adjustable) |
Width : Width and adjustment of matrix constant Depth : adjust forward and backward depth and matrix constant |
| Volume | Changes the volume of each channel simultaneously |
| Balance | Change the volume balance before and after |
| Tape Monitor | 2 ch ⇔ 4 ch |
| Mode | Switching between 2 ch and 4 ch |
| <Scope Part> | |
| Scope Selector | 4-channel Scope : 4-channel sound field observation (AFD scope) Wave Form : Waveform observation for each channel Scope Source : Switching between internal (direct connection) and external signal Scope Gain : adjusting waveform size Position : Waveform Position Bright : Adjust Brightness |
| <General> | |
| Attachment | Mode Switch (4 ch ⇔ 2 ch) 4 ch balancer connection terminal Tape monitor switch |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 8W |
| External dimensions | Width 410x Height 141x Depth 330 mm |
| Weight | 7.85kg |