Solton TS 4 [TS4K] Midi Expander + FootSwitch, 1989, made in Italy

Arranger by Ketron Lab (1989)
Simple arranger with digital PCM drums and some analog sections like bass especially designed for real-time arranger performance.
The ts4k is the keyboard version and TS4 is a 2 units rackmount version, project derived from previous model Programmer 24.

KEYBOARD 49 velocity keys. Main panel features a 16 x 2 LCD display, 48 buttons and 13 sliders for mixing parts control. Quite oddly the pitchbender is located on top left. 

Back panel terminal connectors: 
- Midi interface
- headphones + main analog out + bass individual out 
- 7 outs for drum section 
- 2 custom connectors for pedal controls (bass foot controller +volume) 
- 2 pedalswitch inputs for start/stop and fill-in PIC (from ebay)
 Power supply is a custom model PSU with AC-AC weird pinout!

Company: Solton
Model: TS4 / TS4K
Dates: 1989
Display: 16 x 2 LCD 
Synthesis: hybrid
Resolution: 16 bits
ROM size: ?
Polyphony: ?
Multitimbric: 4 parts
Filter: lowpass
LFO: none
Envelope: 3 EGs 
Memory: 100 slots 
Midi: IN / OUT / THRU 
CPU: 8031
IC: M114S IC

fostex fe108 EΣ sigma + адаптеры fostex p108 Обратный рупор на широкополосных динамиках

Акустическое оформление - обратный рупор, выход верху.
Грили: есть.
Динамик - fostex fe-108EΣ sigma
Кольцо-адаптер - fostex p108 (упаковки картонные остались)
Корпуса: производства Голландия, из балтийской березовой фанеры толщиной 18 мм.
Отделка - красный насыщенный лак.
Размеры колонок (с шипами): 134 х 16 х 23 см.
Размер интегрированного стабилизирующего основания: 30 х 32 см.
Вес: примерно 16кг / шт.

IMF electronics als 40 mk II, made in England

Link: imf-electronics

Medium size speaker, 3 way, Active Transmission Line.

Drivers reference
Tweeter : unknown; medium : unknown, bass: unknown.

The Studio TLS 50 Il and the Studio ALS 40 Il are based on the original IMF transmission and active line systems but include radically redesigned enclosures, crossovers and loudspeaker drivers. The speakers are provided left and right handed. The units are clustered together in a mirror image arrangement between the pair giving a skewed polar distribution inward, away from wall boundaries, so that the listener receives the maximum of direct information, less intermingled with room reflections. Thus stereo presentation is sharp, stable and consistent over a very wide listening area. Such freedom of seating arrangement is usually only associated with systems of indeterminate imagery.

The TLS 50 Il retains the full transmission line loading of the IMF Monitor loudspeakers. A transmission line provides for the driver a near ideal acoustic environment and the reputation of IMF TLS for low colouration and extended bass performance is well established. The TLS 50 Il employs a bextrene cone bass unit with large pole and huge magnet, allowing long excursions without distress or undue overhang. The qualily of the bass response is very special. 'Une' bass is different from the 'box' bass of conventional speakers. It is free, more dynamic and exists in space ralher than in an enclosure. The bass line forms a pressure loading device so that lovv frequencies are felt, rather than heard.

Both the TLS 50 Il and the ALS 40 Il employ the same midrange, wide dispersion tweeter and complex crossover configuration which includes phase correction circuitry to compensate for unit spacing. The TLS 50 II however, also boasts a super-tweeter w'hich furthe extends the high frequency performance well beyond audibility and as such compliments the plane source propagation of the line, down to sub-sonic frequencies

Despite ils generous proportions, the floorstanding IMF TLS 50 Il represents the smallest enclosure in which full passive transmission line loading can be properly maintained. Thus in the somewhat smaller bookshelf ALS 40 Il an additional bextrene sub-woofer is fitted at the end of the line to enhance low frequency efficiency and extend the bass response below that which is typical of such an enclosure size. This extra bass unit is electrically driven via the crossover network and is of dissimilar but interelated resonance to the upper bass unit and to the length of lirie. As such, the 1 active' transmission line (ALS) is a stage removed from the slave units employed with reflex enclosures. Performance adequately justifies the increased cost and extra complexity.

A secondary advantage of the ALS principle lies in increased power handling, especially at very low frequencies. Each bass unit provides a termination for the other, behaving as a sub-sonic filter giving low frequency protection superioreven to that under infinite baffle conditions.

Both the Studio ALS 40 Il and the TLS 50 Il are fitted with a three position perspective control. In the central normal '0' position the mean hemisperical response is nominally flat whilst in the '-' position the mid band energy is tailored to provide a response which psychoacoustically increases the effective distance of the listener from the transmitted performance. Similarly in the '+' position the mid and high frequencies are brought forward to provide an integrated response to a close listening position such as to enhance some popular music presentations, especially under conditions of high ambient noise.

These Studio speakers do fulfull their design criteria, to vvork properly under a wide range of acoustic conditions, conveying very little of themselves or the room but the utmost of the programme fed into them.

Grundig HiFi-Box 741 (Videoton D402E Supermax), 1969-1972, made in Germany

Link: radiomuseum |

Country: Germany
Manufacturer / Brand: Grundig (Radio-Vertrieb, RVF, Radiowerke)
alternative name Grundig Portugal || Grundig USA / Lextronix
Year: 1969–1972
Category: Loudspeaker, headphone or earphone
Wave bands - without
Power type and voltage No Power needed
Loudspeaker 6 Loudspeakers / Ø 20.4 cm = 8 inch
Power out 70 W (unknown quality)
Model: HiFi-Box 741 - Grundig Radio-Vertrieb, RVF,
Material Wooden case
Shape Console with any shape - in general
Dimensions (WHD) 365 x 660 x 255 mm / 14.4 x 26 x 10 inch
  • Impedance 4 - 5 ohms nominal capacity of 50 Watt, 70 Watt barrier stress.
  • 2 woofers, 2 tweeters (88 mm), 2 caps (98 mm).
  • Frequency response 40-20000 Hz socket for Grundig HiFi spherical radiator 700.
  • height with base:. 73 cm.
  • Variants: walnut natural matt, natural teak, rosewood matt (520, -)
Net weight (2.2 lb = 1 kg) 26 kg / 57 lb 4.3 oz (57.269 lb)
Price in first year of sale 485.00 DM
Collectors' prices
Source of data Handbuch VDRG 1970/1971

Saba hi-fi Box 830F 3-way closed system 1969-1971, made in Western Germany


Manufacturer: SABA
Model: 830F (
«F» означает, что это именно настенная версия расположения АС)

Year of construction: 1970 - 1971
Made in Germany
Color: natural walnut, matt white
Dimensions: 540 x 300 x 260 mm (HxWxD)
Weight: 2x11.3 kg

Technical specifications
Design: 3-way closed system

  • Woofer: 1x 200mm
  • Midrange: 1x 150x220 mm
  • Tweeter: 1x 110mm
Endurance (nominal / Musikb.): 25/35 W
Frequency response: 40 - 20,000 Hz
Transition regions:
Impedance: 4 Ohm

Braun Regie 530 AM/FM Stereo Receiver, 1977-78, made in Germany


Link: radiomuseum | hifiengine | Service Manual | Service Manual -


Country: Germany
Manufacturer / Brand: Braun; Frankfurt
Year: 1977/1978 Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 71: 1 x MOS-FET, 70 x transistors, 14 x IC, 6 x zener diodes, 24 x diodes
Reception principle Super-Heterodyne (Super in general)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF. 
Tuning range: FM, MW, LW, SW
Power output: 50 watts per channel into 4Ω (stereo)
Frequency response: 35Hz to 25kHz
Total harmonic distortion: 0.2%
Input sensitivity: 2.3mV (MM), 350mV (line)
Signal to noise ratio: 60dB (MM), 85dB (line)
Speaker load impedance: 4Ω to 16Ω

Canton LE-500, 1974, made in Germany

Link: radiomuseum

Country: Germany
Manufacturer / Brand: Canton; Weilrod
Year: 1974 Category: Loudspeaker, headphone or earphone
Wave bands - without
Power type and voltage No Power needed
Loudspeaker 3 Loudspeakers
Power out
Model: LE500 - Canton; Weilrod
Material Wooden case
Shape Miscellaneous shapes - described under notes.
Dimensions (WHD) 440 x 245 x 210 mm / 17.3 x 9.6 x 8.3 inch 

  • 3-way hi-fi speaker with 55 watts RMS.
  • Impedance 4-8 ohms.
  • Frequency response 28-25000 Hz
  • Crossover (slope 12/24 dB): transitions at 900 and 4500Hz.
  • Volume: 21.6 liters gross.
  • Finish: natural walnut or polyester coating in white or anthracite. Rundgelochtes Alloy grid. High or to provide cross. Suspension. 5-meter connection cable with standard plug firmly mounted.
Net weight (2.2 lb = 1 kg) 9.4 kg / 20 lb 11.3 oz (20.705 lb)
Source of data -- Original prospect or advert