Akai AR 900 + Akai AR 900T midi digital reverb [Restoration & Repair], 1986-1989, made in Japan


The Akai Professional AR900 is a stereo 16-bit MIDI digital reverb, that could also be controlled by the optional AR900T remote control. It belongs to the "Akai White Series", a family of musical products launched in the last part of the 1980s. It was produced between 1986 and 1989.

According to Akai Professional's official 1988-89 Musical Instruments catalog: "The AR900 is a high quality 16-bit digital reverb with 20 preset reverb programs. Numerous variations may be created by adjusting the pre delay and the reverb time settings on the front panel. These variations can then be stored in any ofnthe 79 user memories for a total of 99 programs including the 20 presets. Programs may be selected by MIDI, a foot switch, or the infrared remote control accessory. A dual 7-band programmable graphic EQ can be used independently or in conjunction with the digital reverb to enhance the reverb sounds. The AR900 with its wide selection of useful programs has numerous application in both the studio and on stage."
AR900 FEATURES
  • 8 program algorithms, 12 factory variations provide a selection of simulated ambient environments
  • Independent dual 7-band graphic equalizer (100 Hz, 300 Hz, 600 Hz, 1.5 kHz, 3 kHz, 6 kHz, 10 kHz)
  • Sampling resolution and frequency: 16 bit PCM, 39.0625 kHz
  • Pre delay time: 0.01-210 msec.
  • Reverb time: 1-16 sec.
  • Equalizer section: 7-band 2-channel graphic equalizer. ±12db
  • Frequency response-Dry: 20 Hz~25 kHz, ±3db
  • Frequency response-Effect: 30 Hz~16 kHz, ±2db
  • Connectors: LOOP SEND x2, LOOP RECEIVE x2, REV IN x2, EQ OUT x2
  • Programs: Standard: 1~8; Factory variations: 9~20; User memories: 21~99
  • Dimensions: 482.6(W) x 47.7(H) x 300(D)mm (EIA 1U rackmount)
  • Weight: 4 kg

Korg KM-402 with KAOSS PAD KP3 4-Channel DJ Mixer, 2008, made in China

Link: skratchworx | Owner's Manual [PDF, ru]

Features

  • Four channel configuration
  • Integrated effects from the acclaimed KP3 KAOSS PAD used by DJs and musicians around the world.
  • One hundred effects add unlimited creativity to your DJ sets.
  • "FX RELEASE" function allows reverb and delay tails to smoothly decay through preset and effect changes.
  • "KAOSS Button" on each channel for quick, independent control of your effects.
  • A full 24-bit digital mixer delivers huge headroom and pristine audio quality.
  • Six independent types of EQ deliver unparalleled flexibility to shape your sound, your way.
  • Programmable crossfader allows you to adjust the response and curve to suit your individual needs.
  • Jack guard prevents damage to the I/O section, making the KM-402 worthy of heavy road use.

Yamaha DDP-2 Natural Sound Digital Processor / DAC AK4320 [Cinema DSP, Dolby Digital], 1997, made in Malaysia



Link: audio-databaseOwner's Manual [PDF] | hifiengine | elektrotanya [Service Manual, PDF] |   audiokarma | audiokarma

PCM Mode: Hold down the Dolby Digital button while you are turning on the power button, then release the DD button and press it twice quickly. you will then see the menu change and it's in diagnostic mode. now use the other buttons next to it to change to the input you want/ coaxial or fiber optic. I just did it on my DDP-2 and it works on PCM stereo.


HAWE Trio Flashlight, 1920-1930, made in Czechoslovakia

 

Бакелитовый электромеханический динамо-фонарь Электросила в Ленинграде ОСТ ЭЛ-12-40 *жучок* СП3 [Clone Pigmy Deposé Dynamo Hand Crank Flashlight], may 1951, USSR



Бакелитовый электромеханический динамо-фонарь Электросила в Ленинграде ОСТ ЭЛ-12-40 *жучок* СП3.

Изготавливался заводом Электросила в Ленинграде, начиная с 1940 года по меньшей мере до середины 50-х.

Это чистый Clone Pigmy Deposé Dynamo Hand Crank Flashlight выпускавшийся в 1920-1930хх годах во Франции.

Фонарик такой , очень активно использовался в блокадном Ленинграде
например таким фонариком пользовался Михаил главный герой трилогии "Тарантул" кто не знает это книга Германа Матвеева «Зелёные цепочки» (1945), «Тайная схватка» (1948) и «Тарантул» (1957). Трилогия рассказывает о приключениях подростков, участников героической обороны Ленинграда во время ВОВ.

Oktava MK-012-01 hypercardioid microphone, made in Russia

Link: oktava

The MK-012 is a compact, high quality capacitor microphone with interchangeable capsules to provide a choice of cardioid, hypercardioid or omni-directional polar patterns. The wide, flat response ensures that all sounds are captured with a high degree of accuracy.

A -10 dB pad is included for use in high SPL environments, a low-cut pad is optionally available. The capsules, which screw onto the microphone body, utilise a precision, integral connection system to ensure reliable electrical contact.

The MK-012 is suitable for use in any situation where an accurate sound is required, the small size of the system makes it ideal for use in broadcast, sound for picture, installation, sound reinforcement and theatre situations as well as the recording studio.

In pairs, the MK-012s are perfectly suited for coincident and spaced stereo miking techniques, and also overhead useage in live and studio situations.

Telefunken TL41 Hi-Fi-Lautsprecherbox, 1970-1973, made in Germany

Link: radiomuseum | hifi-wiki

Country: Germany
Year: 1970–1973
Category: Loudspeaker, headphone or earphone
Wave bands: without
Power type and voltage: No Power needed
Loudspeaker: 2 Loudspeakers
Power out: 15 W (30 W max.)
Material: Wooden case
Model: Hi-Fi-Lautsprecherbox TL41 - Telefunken Deutschland TFK
Shape: Book-shelf unit
Dimensions (WHD): 162 x 281 x 170 mm / 6.4 x 11.1 x 6.7 inch
Notes:
- Telefunken Hi-Fi-Lautsprecherbox TL41.
- 2 Lautsprecher-Systeme: Tiefton 13 cm Ø, Mittel-Hochton 13 × 7,5 cm.
- Nennbelastbarkeit 15 W, 4 Ohm, Übergangsfrequenz der eingebauten Weiche: 3000 Hz.
- Übertragungsbereich: 44-20000 Hz.
- Box wird empfohlen für Stereo-Steuergerät hifi compact 2000.
- Preisangabe für 1 Paar.
Net weight (2.2 lb = 1 kg): 5 kg / 11 lb 0.2 oz (11.013 lb)
Price in first year of sale: 278.00 DM
Source of data: Original prospect or advert
Mentioned in: Handbuch VDRG 1971/1972 (und 1972)

Elka MK55 Master Keyboard Controller [Restoration & Repair], 1988, made in Italy

  


Link: muzines | muzines | Owner's Manual [PDF, eng]

8 response characteristics, routable to one of 9 different functions.
19 different dynamics response curves (graphically depicted on the front panel)



SPECIFICATION
KEYBOARD : 61 note
PROGRAMMABLE PERFORMANCE PRESETS : 128, divided into 8 banks of 16 (4 Internal, 4 RAM Cartridge).
PERFORMANCE PRESET MEMORY : Split Settings, Transpose, MIDI Channels, Velocity and Aftertouch Functions, Real Time Control Assignments, MIDI Delay or Echo, Loop, MIDI Clock, Name, Tempo, External Splits 5/6, Chain, MIDI Patch.
MIDI PATCH : A 'System Set Up' Memory with 12 - programmable slots.
HIGH RESOLUTION DYNAMICS : 19 different velocity response curves.
POLYPHONIC AFTERTOUCH : 8 response characteristics, routable to one of 9 different functions.
SPLIT ZONES : 6 freely-definable variable keyboard zones (overlapping permitted). Functions can be programmed differently in each Split Zone.
FREE : 8 fully programmable, storable commands in each Bank (with 8 Banks).
MIDI CLOCK : Internal sync or External.
MIDI OUT : 2 paired, completely independent Outputs (16 channels on each)
MIDI IN : External Clock Input or External Instrument.
CONTROLLERS : 2 Wheels, 3 Sliders, 4 Function Keys, 2 Pedals, 2 Footswitches. All programmable and assignable to Tempo, Start/Stop and Continue, any Real Time Controls.
DISPLAY : Illuminated 32-character LCD.

Altec Lansing Expressionist Classic FX2020, 2008, made in China

Link: review | review

Specification
Configuration: 2.0
Total Power: 15 Watts RMS
Driver: Two 3" (75 mm) full-range drivers
Frequency Response: 100 Hz - 20 kHz
Signal to Noise Ratio (SNR): >75 dB
Sound pressure:95 db
Dimension:5" (W) x 6.5" (D) x 5" (H)
Features:Crystal-clear Sound
Precision-engineered:3" speaker drivers delivers pure, distinct full-spectrum audio. [Intl: 75 mm]
Built-in controls: Power and volume are at your fingertips.
AUX IN Jack: For connecting portable CD, DVD, and MP3 players.