Eltax LX60 (Seas), 1980, made in Denmark

Link: radiomuseum

Tweeter: Seas 10 F-LGS 8Ohm 49/76 (1976)

Country: Denmark
Manufacturer / Brand: Eltax A/S; Aulum
Year: 1980 ??

Category: Loudspeaker, headphone or earphone
Wave bands - without
Details
Power type and voltage No Power needed
Loudspeaker 2 Loudspeakers
Power out
Model: HiFi-Stereo Lautsprecher 2-Weg Box LX60 - Eltax A/S; Aulum
Material Wooden case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 210 x 320 x 190 mm / 8.3 x 12.6 x 7.5 inch
Notes

• Impedanz: 4 - 8 Ohm
• Nenn-/Musikbelastbarkeit: 35/60 W
• Übertragungsbereich: 40 - 20000 Hz
• Übergangsfrequenz der eingebauten Weiche: 2500 Hz

Net weight (2.2 lb = 1 kg) 4.4 kg / 9 lb 11.1 oz (9.692 lb)

ITT Schaub-Lorenz D 250 SD Symmetric Drive [Scan-Speak 21W-3804 & Scan-Speak D-3804], 1970-1972, made in Denmark

Link: troelsgravesen | diyaudio

The bass driver cone is made from long-fibre paper pulp, today only found in the ScanSpeak 18W/8542-00 driver - and not to forget, the JA8008. To my ears, a cone material that can deliver excellent midrange quality. The voice coil is wound on a 38 mm aluminium former ensuring good power handling compared to coils wound on the usual paper former of that time. The driver display a nice smooth response only up to 800 Hz, from where a steadily decline is seen. Why this is so is a hard to tell, but the surround, a relatively weak magnet and lack of dust cap may all play a role. Mms should not necessarily count for an early roll-off.

The D3804 domes are quite sensitive displaying some 92-93 dB/2.8V/1m and with a little creativeness, a two-way system can be modelled with a decent flat response up to 16-18 kHz as can be seen below.

SD (meaning): Symmetric Drive
Woofer: Scan-Speak 21W-3804
Tweeter: Scan-Speak D-3804 38 mm 4 Ohm (Dynaco / Scandyna A-25)

Specifications to DIN 45.500
Frequency range: 40-20.000 Hz
Sensitivity: 2,5 W (96 dB/1 m)
Impedance: 40
Power rating: 50 W
Music power: 100 W

Impedance: 8 Ohm
Dimensions (HxWxD): 50x29х25 сm
Volume: 24 litres

Weight: 10 kg

STE-MA type 275 (Designed by Maurits Andersen) [Peerless + Seas AlNiCo], 1967-1970, made in Denmark

Link: troelsgravesen | seas | audiokarma | List of manufacturers Denmark

Designed by Maurits Andersen, Copenhagen

Длина родного кабеля для подключения: 4.2 m
Music Power: 25 Watt
Impedance: 4 Ohm
Dimensions (WHD): 250 x 700 x 165 mm
Net weight: 6.8 kg / pcs

Peerless KIT 3-15 максимально схож, не считая Woofer Peerless P-825 W.

- Оригинальные электролиты: Jensen.

- Woofer: Seas 21TVG 8" 4 Ohm AlNiCo Sensitivity: 96 db [210 mm по корзине, именно они на сайте у Troelsgravesen числятся как BlackCone]

- Midrange: Peerless M-405 [он же Peerless GT50MRC] 5" 4 Ohm AlNiCo [127mm по корзине, устанавливались так же в THE FISHER Model 111, Electro-Voice’s E-V NINE, McIntosh, Rectilinear, Infinity, Carlsson, B&O, Visonik etc.] The basket flanges measure 5” in diameter, they stand 2⅜” tall, and the mounting holes are spaced 3⅜” adjacent (skipping a hole) / 4¾” diagonal apart, c-t-c. They are both Peerless closed back mids from the late 50's.The one with a bigger magnet is G50MRC and the one with a smaller magnet is GT50MRC. 50=5in. MRC=mid register closed. 750-6000Hz and 800-7000.

- Tweeter: Peerless MT-25HFC 2" 4 Ohm AlNiCo [65 mm по корзине, уж все знают их по B&O, Sonab Rank Arena Tandberg etc.]

Bang & Olufsen (B&O) Beovox HT 2700 Type 6232, 1972, made in Denmark

Link: beo.zone | radiomuseum | beoworld

In 1972 the Museum of Modern Art in New York (MoMA) chose seven Bang & Olufsen products designed by Jacob Jensen to be included in their Design Collection as representing excellent examples of the Museum's criteria for quality and historical importance; design, in fact, which had influenced the twentieth century. Beovox 2700 were one of those seven products. That same year Beovox 2700 won the iF Design Award.

Country Denmark
Manufacturer / Brand Bang & Olufsen (B&O); Struer
Year 1971 - 1972
Designer: Jacob Jensen
Category Loudspeaker, headphone or earphoneWave bands- without
Power type and voltage No Power needed
Loudspeaker 2 Loudspeakers
Material Wooden case
Model: Beovox 2700 6232 - Bang & Olufsen B&O; Struer
Shape Book-shelf unit.
Dimensions (WHD) 205 x 410 x 205 mm / 8.1 x 16.1 x 8.1 inch
Notes
- Impedance (ohms): 4
- RMS load (W): 20
- Music load (W): 30
- Frequency response (Hz): 45-20
- Harmonic distortion (%): 2
- Sensitivity (W): 3,5
- Cabinet volume (Litres): 12
- Dispersion (degrees angle): 120
- Bass unit: 17,8cm Seas 4 Ohm AlNiCo
- Treble unit: 38mm dome Beovox Dome Tweeter 8480080 Important note: Two different SEAS 87H drivers was used by B&O (3 ohm and 6 ohm).
- Crossovers ((Hz): 3K
Net weight (2.2 lb = 1 kg) 5.5 kg / 12 lb 1.8 oz (12.115 lb)
Source of data -- Original-techn. papers.

Seas Type 30 [kit / Broddman GB 40], 1970-1972, made in Denmark

 

Type 30
Effekt 30 w Sinus
Spidsbelastning 50 w
Frekvensområde 35-20000 Hz

Dimensions (WHD) 232 x 471 x 199 mm

made in Denmark

Tweeter: как и в Rank Arena ht 510
Woofer: Seas 21TV (только не понятно с каким индексом, Troels зовет их BlackCone только пропитка на подвесе зеленая, а не черная) troelsgravesen

Динамики на скобах (рвать живьем желания никакого)

AFD 601 [Peerless + Seas], 15 May 1977, made in Germany

Link: 

Грили сделаны производителем в форме короба - закрывающего колонку с 3-х сторон. Толстенные нижний и верхний столы.

Натуральный шпон.

Woofer: Seas 25F-EWX, 8 ohm, 10 inch (250mm)  - отмаркирован Seas но! с доп.  наклейкой AFD Woofer c цветовым индикатором - мягчайший каучуковый подвес

Tweeter: Peerless KO 10/8 (artikel 810665)

Толщины верхней, нижней и задней стен: 25 mm.

Толщины лицевой панели с динамиками, а так же боковые стены: 20 mm.

На скриншоте можно лицезреть, что данная акустика не самоделка - а заводская и продается в Германии.

Serial nubmer: 601031 говорит о массовом производстве или же о версии 601 с серийным номером 031, обе колонки в одной сотне.
Crossover mark: SEN-lab
Щелевой фазоинвертор "c перепонкой" под НЧ динамиком - попытка клонировать Dynaco A-25?
Dimensions: 600x300x300mm
Weight: 22 kg/pcs (44 kg/pair)

Более ничего не известно, за исключением:
- Поляк пишет о подобной паре АС, но судя по ярлыку она собрана гораздо позже audiostereo

- Очень "кратко об истории" от инженера компании AFD, который говорит о начале существования компании с 1975 года hifi-forum | hifi-forum

SEAS 5F-HF (111050-2) 2" Vintage Tweeters, 1978, made in Norway

model: SEAS 5F-HF
2"
impedance: 8 Ohm
code: 111050-2
year of issue: 1978
made in Norway