Acoustic Research AR-4xa, made in USA

System: 2 ways, 2 speaker acoustic suspension system, and a book shelf type

Use unit:
- For low-pass: 20cm corn type
- For high regions: 6cm dome shape

Frequency response: 45Hz - 20kHz
Impedance: 8ohms
Allowable input: Suitable for the amplifier beyond 15W
Crossover frequency: 1kHz
Dimensions: Width 255x height 482x depth of 225mm
Weight: 7.5kg

B&O Bang & Olufsen Beomaster 1400 Tuner/Amplifier, 1964-1970, made in Denmark

Manufactured: 1967 - 1970
Designer: Henning Moldenhawer
Colours: Rosewood, Teak

"A splendid example of engineering and up-to-the-minute design, this all-transistor high-fidelity mains radio was developed by B&O for the ever-increasing number of listeners who want a radio which "has everything"

Its excellent FM section has five push-buttons. One is the usual FM bandswitch button; each of the other four can be individually tuned and locked to any station in the FM band, permitting you to tune in your favourite programmes at the touch of a button.

The Beomaster 1400K meets the wishes of the many listeners who insist on superb tonal quality and interference-free low-noise reception of stations outside the FM band. The razor-sharp selectivity of the Beomaster 1400K is a product of its numerous intermediate-frequency circuits. A further feature is a built-in short-wave expander for the SWII band, permitting you to 'spread' stations for maximum ease of tuning. There is a built-in decoder for reception of stereo broadcasts.

The amplifier of the Beomaster 1400K has very low distortion (less than 1%) at all frequencies and at all power output levels up to 2 x 15 watts. Its volume control circuit is physiologically compensated in the bass and treble ranges at low volume levels. A highly efficient balance control permits complete suppression of either channel at will. 

The Beomaster 1400K has two built-in pressure chamber speakers and jacks for two pairs of external speakers, switchable from the front panel. The gramophone input circuit incorporates a pre-amplifier which is easily replaceable to permit use of stereo record players both with and without pre-amplifiers. A tape recorder jack is also provided. Despite the vast amount of circuitry, cabinet dimensions are relatively small.

Dimensions: 112mm high, 744mm wide, 252mm deep. Choice of teak or Brazilian rosewood finish.

The set is identical with the Beomaster 1400K and has no built-in speakers.

The Beomaster 1400M replaced the Beomaster 900M. Though very similar in size, this new model represented a considerable advance over what had come before in all aspects.

The styling of the Beomaster 1400M was a departure from what was becoming normal B&O practice. Instead of being as slim and low as possible, the Beomaster 1400M assumed more conventional proportions, allowing for a large control panel and easy placement on shelving systems. The overall appearance of the set had been entrusted to a team of designers who usually worked with television sets, so it came as no surprise to find styling cues, such as the silver aluminium framing of the front of the set and the black ventilation grille across the rear, that were already present in the Beovision range.

The Beomaster 1400M matched its sturdy appearance with a really sturdy build. Much of the chassis and front panel was die-cast instead of pressed, something that one would not find anywhere else but the Beolab 5000 system. Internal layout was similar to that of the Beomaster 900, though advances in technique meant that not as much printed circuit area was necessary. The FM stereo decoder and the magnetic pickup equalising preamplifier were built as separate plug-in modules, though all Beomaster 1400Ms sold in the UK came with both fitted as standard.

Of all the technical improvements made, the most significant was an increase in the overall level of performance. With better circuitry and nearly three times as much power, the Beomaster 1400M fully meat the DIN 45 500 standard for Hi-Fi, something that was not the case for the 900 range. This better performance was in part due to the use of silicon transistors, as opposed to the germanium types used previously.

The Beomaster 1400M was well specified and included features such as four pre-set FM programmes, FM AFC, a tuning meter, a short wave fine tuner, two pairs of switchable loudspeaker sockets and a connection for a stereo tape recorder. It could be used as the main unit in a quality Hi-Fi system, with the Beogram 1000 record player and Beovox 2400 loudspeakers being the recommended first additions.

Braun Regie 510 CEV510 HiFi Stereo Receiver, 1972-74, made in Germany

Link: radiomuseum | hifiengine | stereo | thevintageknob | elektrotanya

Country:  Germany
Manufacturer / Brand:  Braun; Frankfurt
Year: 1972–1975
Category: Broadcast Receiver - or past WW2 Tuner
Reception principle Super-Heterodyne (Super in general); ZF/IF 455/10700 kHz
Tuned circuits 10 AM circuit(s)     14 FM circuit(s)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF.
Tuning range: FM, MW, LW, SW
Power output: 40 watts per channel into 8Ω (stereo)
Frequency response: 15Hz to 35kHz
Total harmonic distortion: 0.1%
Input sensitivity: 2.3mV (MM), 350mV (line)
Signal to noise ratio: 80dB (line)
Channel separation: 60dB (MM)
Output: 100mV (line), 30mV (DIN)
Power type and voltage Alternating Current supply (AC) / 110; 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out
Model: Regie 510 CEV510 - Braun; Frankfurt
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 500 x 110 x 320 mm / 19.7 x 4.3 x 12.6 inch

Saba HiFi Kompakt Box MX 20, 1967, made in Germany

Link: hifimuseum

This smallest SABA high-fidelity speaker system is designed for music lovers who have little space for the speakers. Despite smallest design, the compact box MX provides a surprisingly good - including only the bass. Volume: 6.5 Ltr frequency range: 45 - 18000 Hz Can be exposed to 25 watts of music program... Equipped with a woofer and a mid-high speakers. Dimensions: 270 x 182 x 186 mm.

Hi Fi Din 45500
20 Watt
4 Ohm
Made in West Germany
Weight 11 KG (pair)

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

Power type and voltage Alternating Current supply (AC) / 220 Volt 
Loudspeaker - This model requires external speaker(s). 
Power out 
Model: Regie 530 CEV530 - Braun; Frankfurt
Material Metal case 
Shape Book-shelf unit. 
Dimensions (WHD) 500 x 110 x 330 mm / 19.7 x 4.3 x 13 inch 
  • ICs: 14th
  • LF amplifier with 2 output stages 50 W (Sinus). Digital frequency display, 4 LS sockets, phono, tape and monitor input.
  • Diodes Tuned FM portion with dual gate MOS-FET input stage; 5 preset buttons for FM.
  • Housing: Sheet steel, painted black.
Net weight (2.2 lb = 1 kg) 11 kg / 24 lb 3.7 oz (24.229 lb) 
Price in first year of sale 998.00 DM
Collectors' prices 
Source of data Handbuch VDRG 1977/1978

service manual

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Philips 8589 4-band portable radio, made in

Nordmende LB 62, 1968-70, made in Germany

Link: 1 | 2 | 3 [wegavision.pytalhost]

HIFI-Latfisprecherbox LB 62 nach DIN 45500
Closed, acoustically dimmed HiFi compact box; 2 dyn.
Low-frequency emitters with pneumatic diaphragm and a dyn.
High-frequency radiator with hemispheric dome membrane.
Impedance 5 Ohm.
Sine wave power 25 W.
Limit loadability 35 W.
Frequency range according to DIN 45500: 30. 25000 Hz
Basic resonance 66 ± 2 Hz
Distortion factor above 300 Hz
Room content approx. 19 liters
Dimensions: 43 x 22 x 20 cm
Features: white, natural, teak
Weight: 8.5 kg / 1 pcs

Müller ~ Voltcraft (Conrad Electronic) Power Manager 7-channel (power distribution, power strip distributor)

operating voltage: 230V AC 50/60 HZ  6,3A
  • Resistive load max. 2300 W
  • Inductive load max. 920 VS (Cosφ 0,6)

Length of power cord: approx 180cm.
This is an Individually switchable power distribution.
A total of up to 7 devices can be connected Simultaneously. The device has illuminated switches.
5 terminals can with 150 Watt, 2 ports are loaded with 200 watts.
Dimensions: 40 x 28.5 x 6 cm

Weight: 3 kg
Only For indoor use only!
Before opening draw of the device power plug!

Salora HI-FI Stereo 2000, 1972, made in Finland

SALORA sales brochure
SALORA HIFI STEREO 2000 kuuluu osana kokonaiseen laitesarjaan. Muut sarjan laitteet ovat HIFI STEREO 2001, HIFI STEREO 3000, HIFI STEREO 3001 ja LS 2000. Sarja on vamistusmäärillä mitattuna SALORAN valmistamista HIFI-laitteista ylivoimaisesti menestynein. Valmistusmäärä asettuu jonnekin 50000 ja 100000 välille ja mieluummin sen yläpäähän.

SALORA sales brochure
SALORA HIFI STEREO 2000:n suunnitteluryhmän muodostivat pää- ja vahvistinsuunnittelija Göran Lövqvist, viritinsuunnittelijat Mauri Hirvonen ja Pertti Lampinen, mekaniikkasuunnittelija Antero Nurmi ja laboratorioapulaisena Raimo Jokinen. Suunnittelupäällikkönä toimi Mauri Hirvonen.

Link: radiomuseum | salora

Country:  Finland
Manufacturer / Brand:  Salora; Salo
Year: 1972 ?
Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 45:
Reception principle Super-Heterodyne (Super in general); ZF/IF 10700 kHz
Wave bands FM Radio only (very seldom UHF only).
Power type and voltage Alternating Current supply (AC) / 220; 240 Volt
Loudspeaker - This model requires external speaker(s).
Power out 60 W (unknown quality)
Model: HI-FI Stereo 2000 - Salora; Salo
Material Various materials
Shape Tablemodel, low profile (big size).
Dimensions (WHD) 493 x 80 x 233 mm / 19.4 x 3.1 x 9.2 inch
  • The receiver HiFi Stereo 2000 is a control device with an FM receiver and a stereo amplifier with an output power of 2 x 30 watts into 4 Ω.
  • The receiver has a program memory for 5 stations, connectors for 2 × TB, Phono, microphone, headphones and 2 × 2 speaker jacks that are switchable.
Net weight (2.2 lb = 1 kg) 5.5 kg / 12 lb 1.8 oz (12.115 lb)
Source of data -- Original-techn. papers.

Braun Regie 550 CEV550, 1976–78, made in Germany

Link: radiomuseum | hifimuseum | hifiengine | wegavision.pytalhost | elektrotanya

Country: Germany
Manufacturer / Brand: Braun; Frankfurt
Year: 1976–1978

Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) 79:
Frequency response: 15Hz to 25kHz
Total harmonic distortion: 0.1%
Input sensitivity: 2mV (MM), 330mV (line)
Signal to noise ratio: 60dB (MM), 80dB (line)
Output: 330mV (line)
Speaker load impedance: 4Ω to 16Ω
Reception principle Super-Heterodyne (Super in general); ZF/IF 455/10700 kHz
Tuned circuits 7 AM circuit(s) 14 FM circuit(s)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF.
Power type and voltage Alternating Current supply (AC) / 110; 130; 220; 240 Volt
Loudspeaker - This model requires external speaker(s).
Power out 140 W (unknown quality)
Model: Regie 550 CEV550 - Braun; Frankfurt
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 500 x 110 x 320 mm / 19.7 x 4.3 x 12.6 inch
  • Stereo audio amplifier with 2 x 70 watts sine and 2 x 100 watts of music power.
  • Power Bandwidth 10-35000 Hz.
  • 7 programmable preset buttons.
Net weight (2.2 lb = 1 kg) 14 kg / 30 lb 13.4 oz (30.837 lb)
Price in first year of sale 1,900.00 DM
Collectors' prices
Source of data Handbuch VDRG 1976/1977
Mentioned in -- Original-techn. papers.
Literature/Schematics (1) HiFi-Jahrbuch 8; S. 358, Verlag G. Braun Karlsruhe 1976

service manual

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