Yamaha JA 5001 Elephant Ear-shaped loudspeaker [for Yamaha NS 20 and etc], made in Japan

Link: urarakaaudio

8 ohm
25 watt

Эстрадин Эффект-1 Флэнжер | Estradin Efect-1 Flanger, June 1989, made in USSR

Produced in the USSR on "Estradin" military radioplant (famous for its Estradin-230 & Altair-231 synths) in 1988.
Suitable as signal processor for analog synths, drums, guitars, vocals or for any type interesting sonic experiments. It has standard 1/4TRS "Jack" for In, Out, Direct Out, also a switch between two bias modes. LED is rate\freq synchronized.
Powered by 220 volt. 
Some interesting specs of that flanger is a shift switch.
Actually that switch is used to transfer delay time control
from automatic to manual mode or vice versa.

The knobs: Rate, Depth and Brightness.
Button: Flanger
Inputs\Outputs: In, Out, Direct Out on standard 1/4'' jack. 
Switch between modes: auto and manual mode of flanger.
Power source: 220 volts

Manual & Schemat:

DACS Audio FwS FREQue II Stereo EQ - Rackmount Analog Ring-Mod Flay's Audio

DACS Audio

Manufacturer's Description from DACS

Produce pumping tracks that stand out from the crowd with the FwS FREQue II (pronounced "freak"), a genuinely new and inspirational analogue effects processor.
"In a world filled with plug-ins that do everything, the FREQue II is a processor that few, if any, plug-ins can emulate. The FREQue II is truly a sound designer’s dream. It’ll chew up program material like nothing else out there!" (Alex Artaud review)

Goodmans Module 80 VHF-FM Tuner Amplifier, 1971-1974, made in England

Link: radiomuseum | User's Guide and Diagrams | vintage-radio

Country: Great Britain (UK)
Manufacturer / Brand: Goodmans Industries Ltd.; Wembley, Middlesex
Year: 1971–1974

Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Super-Heterodyne (Super in general)
Wave bands FM Broadcast Band Only
Power type and voltage Alternating Current supply (AC) / 120; 220; 245 Volt
Loudspeaker - This model requires external speaker(s).
Power out 40 W (unknown quality)
Model: Module 80 - Goodmans Industries Ltd.;
Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 557 x 95 x 300 mm / 21.9 x 3.7 x 11.8 inch
  • HI-FI-Stereo Receiver, 2x70 Watt sinus, 2 schaltbare Lautsprecherausgänge(4 Ohm), Kopfhöreranschluß über 6,3 mm Klinkenbuchse, Eingänge: Aux/ TB/ Phono magn., UKW-88-108 MHz, Stereoanzeige, AFC, Ratio-Mittenanzeige, Antenneneingang 240 Ohm, 1 geschaltener Netzausgang für ext. Komponenten, max. Leistungsaufnahme vom Netz 200 Watt 
Net weight (2.2 lb = 1 kg) 8 kg / 17 lb 9.9 oz (17.621 lb)
Price in first year of sale 999.00 DM

Hitachi HS-310 Loudspeaker System, 1980-1981, made in Japan

Link: hifiengine

The model HS-310 is a top line loudspeaker system which is designed to reproduce sound with hardly any non-linear distortion and to meet the requirements of HiFi fans.

The woofer employs a metal cone which is made out of a single sheet of aluminium alloy, and this helps to expand the piston motion area and also to eliminate the effects of humidity.

The midrange employs a diaphragm, which is configured from a single sheet of aluminium alloy in much the same way as the woofer.

The high rigidity titanium diaphragm reduces distortion and it's small diameter of 25mm improves dispersion.

Type: 3 way, 3 driver loudspeaker system
Frequency Response: 32Hz to 20kHz
Power Handling: 50W
Crossover Frequency: 1000, 4000Hz
Impedance: 8Ω
Sensitivity: 91dB
Bass: 1 x 250mm
Midrange: 1 x 100mm
Tweeter: 1 x 25mm
Enclosure: 42 litre
Finish: vinyl
Dimensions: 315 x 575 x 320mm
Weight: 11.5kg