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GM-70 SINGLEJapan

Ask 26-48955-03646-00
GM-70 SINGLE
Manufacture:P&C
Price: JPY 386,364
Japan
Arrival: 2026-03-15 20:07:06
description
The price has been drastically reduced! 2026/3/15 sales price 498,000 yen Maintained! A single amplifier equipped with the last military vacuum tube GM-70 in the Soviet era. It has a softer tone than the 845, and the sound and breadth of the instrument is richer. Excellent compatibility with large ALTEC speakers, etc. There is a scratch on the front. (FUJISAWA KOSHI) Maintenance information: 2026.3.15 Maintained (WE310A electrode drawer and adhesive treatment between cap and vacuum tube body. Screws on the GM-70 socket part were inspected and tightened during internal inspections. The vacuum tube operating voltage was checked, and the GM-70 operated normally with a plate voltage of 920V and a current of 85mA. Bias is a self-biased method. A power supply for DC ignition was added to minimize residual noise. Also, since a voltage of about 1000 V is ignited to the output transformer, the secondary terminal 0V is connected to ground as a preventive measure to prevent electric shock due to transformer leaks, and the sound output test is good. Gain: 14.8 times (approx. 23 dB) Less than 10W (8Ω) near the maximum input volume with 1V input. Undistorted maximum output: 9W (at 8Ω1kHz) Frequency characteristics: 47Hz to 12kHz (-3dB) measured at 8Ω1W output. Input impedance: 100KΩ XLR terminal, but not 600Ω. (Number 2 is + and number 2 and 3 are Earth.) Accessories: power cord Main specifications: approx. 10W+10W (actual measurement) vacuum tube using GM-70 x 2 Philips ECG 5R4GYB x 2 WE 310A (top mark/small punch) x 2 W500 x H273 x D364 mm 38.1 kg (actual measurement)

1インチホーン

Ask 26-49275-06405-00
1インチホーン
Manufacture:RAFT CRAFT
Price: JPY 22,727(pair)
Shop: Osu shop
Arrival: 2026-03-19 19:39:08
description
※Since there are paint cracks on the inside of the horn, it is inexpensive. Altec 1 inch driver compatible (806-8A, etc.) wood horn. It is made to be relatively lightweight in raft crafts, and it has a slight sound peculiar to horns. The exterior has cracks and peeling paint on the inside of the horn (Ryo Mizusaki) Accessories: none Main specifications: W715 x H190 x D465 mm 8.9 kg (actual measurement)

802DU.S.A

Ask 26-48964-03725-00
802D
Manufacture:ALTEC
Original price: JPY 113,000
Price: JPY 90,727(pair)
U.S.A 1976 made
Arrival: 2026-03-19 19:55:47
description
※Since the left and right diaphragms are different, it is inexpensive. Altec Green 802D. You can experience the light, penetrating sound typical of Altech. The exhilarating, straight sound in combination with the 511B, is attractive, as used on the A7. (TAMURA Eiji) Maintenance information: 2026.3.19 Maintained (the coil bobbin is rounded out, penetrating adhesive penetrates into the coil float. Magnetic circuit slit maintenance → magnetic circuit slit cleaning and anti-corrosion treatment. Operation check → enter a sine wave and confirm the loss of ions. (Diaphragm centering adjustment implemented to stop noise) Accessories: none Main specifications: impedance 16 ohms frequency band 500 to 22 kHz efficiency 110 db 120 x 100 mm 3.4 kg

416-8BU.S.A

Ask 26-49275-06407-00
416-8B
Manufacture:ALTEC
Original price: JPY 107,200
Price: JPY 63,455(pair)
U.S.A 1975 made
Shop: Osu shop
Arrival: 2026-03-19 19:55:38
description
※The operation test was good, but the mesh on the center cap is missing, so it's cheap. A standard woofer installed in A7 systems, etc. The highly efficient and clear sound is perfect for jazz, etc. A classic model with an American sound that is bright and crisp (Sasaki Shota) Maintenance information: 2026.3.19 sweep test is good Accessories: none Main specifications: 38cm cone woofer unit Alnico magnet frequency characteristics 20 to 1600 Hz 8 ohms weight 7.9 kg/book

515EU.S.A

25-89024-20105-00
515E
Manufacture:ALTEC
Original price: JPY 110,000
Price: JPY 27,091(only one piece)
U.S.A 1979 made
Shop: Osu shop
Arrival: 2025-10-09 20:18:27
description
The disposal price has been reduced. Member prices are not applicable. 2025/11/25 sales price 39,800 yen ※1 bottle only. Altech's classic woofer. Although it is ferrite, it produces bright bass with good emission. It's a sound method that puts emphasis on mid and low tones, so you can hear vocal breath well. There is dirt on the edge (Oikawa Tetsuji) Maintenance information: 2025.10.9 operation confirmed Accessories: none Main specifications: 38cm woofer, 16 ohm, ferrite frequency band, 20 to 1000 Hz, 101 dB, recommended crossover, 500 Hz, baffle opening, 359 mm, baffle opening, 359 mm, rim outer diameter, φ408 x D162 mm, screw pitch: 380 mm, 10 kg

515EU.S.A

25-89024-20106-00
515E
Manufacture:ALTEC
Original price: JPY 110,000
Price: JPY 27,091(only one piece)
U.S.A 1979 made
Shop: Osu shop
Arrival: 2025-10-09 20:18:26
description
The disposal price has been reduced. Member prices are not applicable. 2025/10/9 sales price 39,800 yen ※1 bottle only. Altech's classic woofer. Although it is ferrite, it produces bright bass with good emission. It's a sound method that puts emphasis on mid and low tones, so I can hear vocal breath well (Oikawa Tetsuji) Maintenance information: 2025.10.9 operation confirmed Accessories: none Main specifications: 38cm woofer, 16 ohm, ferrite frequency band, 20 to 1000 Hz, 101 dB, recommended crossover, 500 Hz, baffle opening, 359 mm, baffle opening, 359 mm, rim outer diameter, φ408 x D162 mm, screw pitch: 380 mm, 10 kg

CRESCENDOU.S.A

This item has been sold.You can't purchase now. 25-48228-24375-00
CRESCENDO
Manufacture:ALTEC
Original price: JPY 457,800
Price: JPY 350,909(pair)Sold Out
U.S.A 1974 made
Arrival: 2026-01-16 20:03:28
description
The disposal price has been reduced! Member prices are not applicable. 2026/1/16 sales price 498,000 yen Both inside and outside have been maintained and brushed up! Crescendo is a speaker system developed by Electri and sold with Altech's approval. This time it's an original original box specification with the 605B mounted on it. You can enjoy the tasteful design unique to vintage speakers and the crisp American sound with good texture and momentum. The exterior is beautifully finished. Serial 01159/01167 (Tamura Eiji) Maintenance information: 2026.1.16 Maintained (exterior repair/polishing/painting. Front and rear baffle repair and painting. Saran net cleaning/coloring. Unit maintenance: low frequency side viscoid sagging removal/terminal cleaning, high frequency side magnetic circuit gap cleaning/center adjustment, terminal cleaning. Network maintenance: frequency characteristics check, ATT cleaning, terminal cleaning. (Detachable unit) Accessories: saran net Main specifications: frequency characteristics 20 to 20,000 Hz, use unit 38 cm, 605B (coaxial type with built-in horn), maximum input, 50 W, output, sound pressure level, 97 dB, crossover frequency, 1.6 kHz, impedance 16 ohms, W690 x H1,018 x D485 mm

416-8BU.S.A

Ask 26-48964-03724-00
416-8B
Manufacture:ALTEC
Original price: JPY 107,200
Price: JPY 68,000(pair)
U.S.A 1975 made
Arrival: 2026-03-05 20:05:50
description
The price has been reduced! 2026/3/5 sales price 79,800 yen ※The center cap has a slight dent, so it's cheap. A standard woofer installed in A7 systems, etc. The highly efficient and clear sound is perfect for jazz, etc. A classic model with an American sound that is bright and crisp. On the exterior, there are stains and viscoid sauce on the corn paper. Serial 30357/31144 (Yonejima Satoshi) Maintenance information: 2026.3.5 sweep check is good Accessories: No accessories Main specifications: 38cm cone woofer unit Alnico magnet frequency characteristics 20 to 1600 Hz 8 ohms weight 7.9 kg/book

511BU.S.A

Ask 26-48964-03852-00
511B
Manufacture:ALTEC
Original price: JPY 146,000
Price: JPY 33,455(pair)
U.S.A
Arrival: 2026-03-01 20:10:21
description
The price has been reduced! 2026/3/1 sales price 39,800 yen Altec standard 1 inch 4 sectional horn. It comes with a stay, so it's easy to stand on your own feet. With a 1-inch driver of your choice, such as the 802-8D, you can enjoy the horn sound unique to Altec with good sharpness. The exterior is dull and scratched. (YONEJIMA Satoshi) Accessories: No accessories Main specifications: crossover 500 Hz directional horizontal 90 x vertical 40 throat diameter 250 mm W600 x H270 x D 486 mm 6.7 kg

N801-8AU.S.A

Ask 25-48219-24291-00
N801-8A
Manufacture:ALTEC
Original price: JPY 33,700
Price: JPY 15,455(only one piece)
U.S.A
Arrival: 2025-12-25 19:51:07
description
The price has been drastically reduced. 2025/12/25 sales price 20,000 yen. ※There is only 1 bottle, and there are problems such as a missing square black cover on the back, etc., and it is inexpensive. This is Altech's 2-way, 800Hz crossover network. Equipped with an attenuator. Please use this when you want to change A5 or A7 to 800Hz. The exterior has a strong sense of use such as scratches and dullness (Murakoshi Yoichi) Maintenance information: 2025.12.14 sound output confirmed Accessories: none Main specifications: allowable input 100W input impedance 8Ω attenuator 1dB to 10dB crossover frequency 800Hz dimensions W122 x H140 x D143 mm weight 1.6 kg

904-8A用ネットワークU.S.A

Ask 25-48332-25603-00
904-8A用ネットワーク
Manufacture:ALTEC
Price: JPY 10,909(only one piece)
U.S.A
Arrival: 2026-01-06 19:52:40
description
The disposal price has been reduced. Member discounts are not applicable. 2026/1/6 sales price 15,000 yen. ※There is only one, and the attenuator is thin, so it is inexpensive. This is Altec's 904-8A network. The crossover is 1500 Hz. A rubber-like sheet is attached to the body (Murakoshi Yoichi) Maintenance information: 2025.12.13 sound output confirmed Accessories: none Main specifications: W191 x H109 x D230 mm 1.9 kg

N801-8AU.S.A

Ask 25-48442-26087-00
N801-8A
Manufacture:ALTEC
Price: JPY 54,545(pair)
U.S.A
Arrival: 2026-01-24 19:58:28
description
※The attenuator knob is a replacement. Maintained. This is Altech's 2-way, 800Hz crossover network. Equipped with an attenuator. Please use this when you want to change A5 or A7 to 800Hz. Exterior, paint peeling, rust, dullness, scratches, etc. can be seen (Kobayashi Hitoshi) Maintenance information: 2026.1.14 Maintained (coil fixed) 2025.12.28 Maintained (attenuator disassembly and cleaning) Accessories: none Main specifications: allowable input 100W input impedance 8Ω attenuator 1dB to 10dB crossover frequency 800Hz dimensions W122 x H140 x D143 mm weight 1.6 kg

828HU.S.A

Ask 25-48401-25773-00
828H
Manufacture:ALTEC
Price: JPY 16,364
U.S.A
Shop: Osu shop
Arrival: 2025-12-18 20:28:29
description
The disposal price has been reduced. Member discounts are not applicable. 2025/12/19 sales price 30,000 yen ※1 bottle only. Front load enclosure familiar from A7 etc. What about the mono group? The exterior has several holes for peeling paint and fixing to the top plate. (TAMURA Eiji) Accessories: none Main specifications: bass reflex type W755 x H1062 x D610 mm, weight approx. 55 kg

511BU.S.A

Ask 25-48442-26104-00
511B
Manufacture:ALTEC
Original price: JPY 146,000
Price: JPY 34,364(pair)
U.S.A
Arrival: 2025-12-22 19:34:57
description
The price has been reduced. 2025/12/22 sales price 39,800 yen Altec standard 1 inch 4 sectional horn. With a 1-inch driver of your choice, such as the 802-8D, you can enjoy the horn sound unique to Altec with good sharpness. You can see a feeling of use such as appearance, dullness, scratches, etc. (Kobayashi Hitoshi) Accessories: none Main specifications: crossover 500 Hz directional horizontal 90 x vertical 40 throat diameter 250 mm W600 x H270 x D 486 mm 6.7 kg

ALTEC 606 TYPE

Ask 25-48445-26121-00
ALTEC 606 TYPE
Manufacture:不明
Price: JPY 77,091(pair)
Shop: Osu shop
Arrival: 2025-12-21 20:04:01
description
The price has been drastically reduced. 2025/12/21 sales price 100,000 yen An enclosure that imitates Altec Consumer No. 1 corner type. The majestic construction, which is reminiscent of the ICONIC era, and the specifications that make you feel particular about making the sound, such as materials and noise suppression, are attractive. There is paint deterioration on the side and top surface, and there is a slight difference in finish on the left and right sides of the bottom, color, etc. (Kobayashi Hitoshi) Accessories: none Main specifications: W910 × H933 × D614 mm 39 kg

515EU.S.A

Ask 25-47788-20506-00
515E
Manufacture:ALTEC
Original price: JPY 220,000
Price: JPY 50,727(pair)
U.S.A 1979 made
Arrival: 2025-10-18 19:26:19
description
The disposal price has been reduced. Member discounts are not applicable. 2025/10/18 sales price 79,800 yen It is cheap because the cone has viscoid drips on one side. Altech's classic woofer. Although it is ferrite, it produces bright bass with good emission. It's a sound method that puts emphasis on mid and low tones, so you can hear vocal breath well. Dullness, scratches, etc. can be seen on the exterior (Kobayashi Hitoshi) Maintenance information: 2025.10.15 Operation confirmed Accessories: none Main specifications: 38cm woofer, 16 ohm, ferrite frequency band, 20 to 1000 Hz, 101 dB, recommended crossover, 500 Hz, baffle opening, 359 mm, baffle opening, 359 mm, rim outer diameter, φ408 x D162 mm, screw pitch: 380 mm, 10 kg

AH-500Japan

Ask 25-47615-19260-00
AH-500
Manufacture:CORAL
Original price: JPY 116,000
Price: JPY 31,636(pair)
Japan 1980 made
Shop: Osu shop
Arrival: 2025-10-05 20:13:44
description
The price has been reduced. 2025/10/5 sales price 39,800 yen Coral 1 inch horn. It weighs a lot more than the JBL and Altec models of the same shape and comes straight ahead. A crackling and dead sound. A JBL 1-inch driver can also be attached. It's deadlocked. There are a lot of scratches overall (Sasaki Shota) Accessories: none Main Specifications: Sectoral Horn Directivity: Horizontal 90° Vertical 40° Cutoff Frequency 250Hz Throat Diameter 2.54 cm W750 x H180 x D580 cm 15 kg

AH-500

Ask 25-47615-19261-00
AH-500
Manufacture:CORAL
Original price: JPY 116,000
Price: JPY 31,636(pair)
Shop: Osu shop
Arrival: 2025-10-06 19:54:06
description
The price has been reduced. 2025/10/6 sales price 39,800 yen Coral 1 inch horn. It weighs a lot more than the JBL and ALTEC models of the same shape and comes straight ahead. A crackling and dead sound. A JBL 1-inch driver can also be attached. It's deadlocked. There are a lot of scratches overall (Sasaki Shota) Accessories: none Main Specifications: Sectoral Horn Directivity: Horizontal 90° Vertical 40° Cutoff Frequency 250Hz Throat Diameter 2.54 cm W750 x H180 x D580 cm 15 kg

MR931-12U.S.A

Ask 25-47709-19929-00
MR931-12
Manufacture:ALTEC
Original price: JPY 40,000
Price: JPY 13,636(pair)
U.S.A 1983 made
Shop: Osu shop
Arrival: 2025-10-16 19:56:45
description
Can be attached to a mantalay horn 902-8B/902-16B/908-8B for 1" screwdrivers, etc. There is dullness and small scars (Oikawa Tetsuji) Accessories: none Main specifications: recommended crossover 2 kHz cutoff 1250 Hz throat diameter 2.54 cm W367 × H182 × D114 mm 0.33 kg

管球王国vol.37

20-90006-28825-60
管球王国vol.37
Price: JPY 1,364
雑誌・書籍1000円以上で送料無料
Arrival: 2020-07-03 16:08:53
description
※Shipping service. Special Feature = Listening and Comparing 300B Current Vacuum Tubes/Sound Altec Coaxial 409B/ Audition of 19 New High Value Amplifiers/Listen to UK DECCA, EMI, and LEAK Cartridges/Build a WE310A Line Preamp Kit/My Handicraft = Stereo Signal Divider TAD1 (Production ◎ Uesugi Yoshiro), Phono Equalizer Amplifier KSE37 (Production ◎ Koreeda Shigeharu), 300B Single Stereo Power Amplifier (Produced by Yoshio Nasu) /Published 2005.8.28. Since the photograph is a sample, the actual item may be broken or have markings etc.

MJ-無線と実験- 1985年10月号

20-90003-32803-60
MJ-無線と実験- 1985年10月号
Price: JPY 909
雑誌・書籍1000円以上で送料無料
Arrival: 2020-08-16 14:13:41
description
※Shipping service. Special Feature = Separate CD Player Research/Ultra Low Frequency Playback Research Vol.2/200W Power Amplifier/VT-52/300A Single Amplifier/Digital Recording Thought/Emmiller UDD Horn/Technology Frontier “8 mm PCM” /Published Circuit Diagram: ALTEC MR42A Mantaray Horn, Electro-Voice HT94 CD Horn/S60.10.1 issued. Since the photograph is a sample, the actual item may be broken or have markings etc.

604-8G用ネットワークU.S.A

Ask 24-89024-23625-00
604-8G用ネットワーク
Manufacture:ALTEC
Price: JPY 68,182(pair)
U.S.A
Arrival: 2024-11-11 19:53:47
description
Maintained. Scarce! Altec 604-8G coaxial 2-way network. The crossover is 1,500 Hz. If you've been looking for one, take this opportunity. You can see a feeling of use, such as appearance, dullness, abrasions, etc. (Kobayashi Hitoshi) Maintenance information: 2024.11.10 Maintenance completed (terminal part soldered, reworked, attenuator disassembled, cleaned, speaker terminal cleaned crossover check) Accessories: none Key Specifications: Crossover 1500 Hz impedance 8 ohms 

N501-8AU.S.A

Ask 22-35388-36688-00
N501-8A
Manufacture:ALTEC
Original price: JPY 84,000
Price: JPY 68,182(pair)
U.S.A
Arrival: 2024-08-30 20:10:11
description
Maintained! This network is used for A5, A7, etc. Unlike channel dividers, it is easy to handle, and the sound is familiar to the ear. There are dirt marks and scratches on the exterior. Serial 7262, 9085 (Fujisawa Yukishi) Maintenance information: Maintained on 2024.8.30 (The A.B unit attenuator has been disassembled and cleaned.) 2020.9.20 Maintained (Input terminals replaced with banana-compatible general-purpose products. Remove output terminal solder. Capacitor fixing and wiring insulation. ATT disassembly contact cleaning, contact grease application. A frequency characteristic measurement check (~ 42 kHz) was performed, and the original capacitor was continuously used because the results were good. (Input/output waveform and balance check, sound output check) Accessories: No accessories Main specifications: crossover 500 Hz 8 ohms W123 x H140 x D132 mm 1.6 kg

828 TYPE

Ask 19-24823-63073-00
828 TYPE
Manufacture:不明
Price: JPY 909(only one piece)
Shop: Osu shop
Arrival: 2019-11-02 13:37:08

MR94B用エンクロージャー

Ask 17-10254-42073-00
MR94B用エンクロージャー
Manufacture:不明
Price: JPY 909(pair)
Shop: Osu shop
Arrival: 2017-04-16 20:08:31
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