* There is no problem with the sound output, but since it is in poor condition, it is inexpensive and is sold as is. JBL Pro Alnico Woofer It is highly compatible with larger bass reflex enclosures and front-load enclosures such as the 4560BK. There is a feeling of use over time, such as dents on the outer cap, repair marks, etc., and dullness. Serial 9276/9280 (Yamato Yuki)
Maintenance information: 2025.10.25 sound output confirmed
Accessories: none
Main specifications: impedance 16 ohms, measured resistance value 14.1/12.8 Ω, 100W, 101 dB, 40 Hz to 2 kHz, crossover frequency 800 Hz, screw pitch (diagonal), 370 mm, 7.7 kg
The price has been reduced. 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
※It is currently sold because it is cheap. Denon bass reflex subwoofer with built-in amplifier. It is a subwoofer that reproduces powerful deep bass with a maximum output of 100W (PEAK) (Daiki Goto)
Maintenance information: 2025.10.23 Operation confirmed
Accessories: manual, power cable, connection cable, original box
Main specifications: W225 x H375 x D370 mm Weight 8.5 kg Playback frequency range 20 Hz-400 Hz
※ Because it is cheap, it is currently sold. Active subwoofer equipped with a 20cm woofer unit. A simple design with a built-in 50W power amplifier and just a volume and power switch on the back. Advanced Yamaha Active Servo Technology 2 enables playback from 28 Hz even though it is small (Daiki Goto)
Maintenance information: 2025.10.23 Operation confirmed
Accessories: none
Main Specifications: Advanced Yamaha Active Servo Technology 2 Output 50W Playback Frequency Band 28Hz to 200Hz Speaker Unit 20cm Cone Type (Non-Magnetic) W291 x H292 x D341 mm 8.5 kg
Since it is a woofer only, it is inexpensive and is currently sold. It is a 2.1 channel speaker system that perfectly matches Bose's unique compact, high-performance speaker technology with bass reproduction technology (Daiki Goto)
Maintenance information: 2025.10.23 Operation confirmed
Accessories: none
Main specifications: rated input 100W impedance 6Ω subwoofer 13cm drivers x 2 W485 x H358 x D192 mm 9.1 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/8/31 sales price 17,800 yen. Currently sold. Yamaha subwoofer. Adopting Yamaha's proprietary technology “Twisted Flare Port,” this is an attractive car with clear deep bass. Of course, it is an ideal car for theaters as well as HiFi. You can see the exterior, dullness, and feeling of use (Kobayashi Hitoshi)
Maintenance information: 2025.8.31 Operation confirmed
Accessories: none
Main specifications: output 130 W, playback frequency band 28 Hz to 200 Hz, high cut filter, 50 Hz to 150 Hz, continuously variable, W290 x H306 x D351 mm, mass 11.2 kg
The disposal price has been reduced. Member discounts are not applicable. 2025/5/30 sales price 35,000 yen. Max Caliber series 12 inch woofer The strongest configuration with dual voice coils and dual magnets. Suitable for automotive and theater applications with an allowable input of 500W (Murakoshi Yoichi)
Maintenance information: 2025.5.25 sound output confirmed
Accessories: none
Key Specifications: 12 inch allowable input 500W range 27-200Hz 9.7 kg
※The shape of the frame is different on the left and right. How about a replacement for those who make their own SEAS 25cm woofers or those who use DYNACO speakers? There are stains and scratches on the exterior (Tamura Eiji)
Maintenance information: 2025.8.3 sweep check OK
Accessories: No accessories
Main specifications: 0.8 kg/0.9 kg
*Currently sold. The label peels off, but I think it's 10LW30nK. It's a 26 cm woofer that seems easy to use. How about a self-made introductory machine (Oikawa Tetsuji)
Maintenance information: 2025.10.16 Operation confirmed
Accessories: none
Main specifications: 8 ohms 95 dB diameter 260 mm x D128 mm 3.75 kg
※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
※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
A commercial model with a strong damper and a high allowable input. By replacing the 4343/4344 2235H with this unit, deep low frequency playback that is extremely tight is possible. There is dirt, rust on the frame, dullness, etc. (Oikawa Tetsuji)
Maintenance information: 2025.10.9 operation confirmed
Main specifications: 38cm cone woofer impedance 8 ohms sound pressure level 97 dB frequency band 30 Hz to 2 kHz recommended crossover frequency 1.2 kHz or less diameter 388 x depth 133 mm 10.1 kg/book
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 (Sasaki Shota)
Maintenance information: 2025.10.6 sweep test good
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
Viscoid drips conspicuously on one side, so it is inexpensive. 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 (Sasaki Shota)
Maintenance information: 2025.10.6 sweep test good
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
The price has been drastically reduced. 2025/8/25 sales price 20,000 yen. ※Inexpensive due to poor condition. Currently sold. A famous NS-1000M woofer. The harmonic sound of a piano or guitar when incorporated into a speaker system is exquisite. The cloth edge, which is double coated with thermosetting resin and viscoelastic resin that suppresses resonance, is extremely durable. In addition to corrosion, dirt, and rust on the exterior and magnets, and dents on the grill, you can also see a feeling of use such as dullness, scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.8.22 Operation confirmed
Accessories: none
Main specifications: 30cm cone type W340 x H140 x D340 mm 5.55 kg (actual measurement)
The price has been drastically reduced. 2025/6/1 sales price 9,800 yen Current sale item. 1 bottle only. Tamon's 30cm woofer. Adopts a fixed edge. If you are a self-made artist and are looking for one, please take this opportunity. The appearance is fine, with no noticeable scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.5.25 Operation confirmed
Accessories: original box, frequency characteristic diagram
Key Specifications: 30cm (12 inch) woofer 8 ohms
The disposal price has been reduced. Member prices are not applicable. 2024/9/16 sales price 59,800 yen edge has been replaced! This is a 38cm passive woofer for use in combination with 136A. I think it would be interesting to team up with 136A in a 150-liter enclosure and use 075 to make a replica of the Olympus S8R (Oikawa Tetsuji)
Maintenance information: 2024.9.16 Maintained (edge replacement, damper adhesion repair)
Accessories: none
Main specifications: 38cm cone type passive radiator recommended enclosure 114 L to 169 L 3.2 kg
*Only 1 bottle is currently sold. A 10-inch woofer from Rockford Fosgate, a long-established American car audio company. There is solder residue on the connection terminals and adhesions on the disconnected terminals. (TERASHIMA Yuya)
Maintenance information: 2025.8.10 sound output confirmed
Accessories: none
Main specifications: impedance 4 ohms diameter 255 mm x depth 135 mm weight 4.2 kg
*Only 1 bottle is currently sold. Visaton 17cm woofer If you are a self-made artist, don't miss it. The speaker cable is soldered. There is a note on the original box (Mizusaki Ryo)
Maintenance information: 2025.8.10 sound output confirmed
Accessories: original box
Main specifications: 17 cm woofer impedance 8 ohms output sound pressure level 88 dB diameter 165 mm x depth 80 mm weight 900 g
*Only 1 bottle is currently sold. 20cm cone woofer unit The exterior is dirty and scratched. (TERASHIMA Yuya)
Maintenance information: 2025.8.10 sound output confirmed
Accessories: none
Main specifications: 20 cm woofer diameter 200 mm x depth 118 mm weight 800 g
*Only 1 bottle is currently sold. This is a 17cm flat woofer that was mounted on the company's SS-X300. An aluminum honeycomb diaphragm is used as the diaphragm to achieve high rigidity. There is a scratch on the diaphragm on the exterior (Mizusaki Ryo)
Maintenance information: 2025.8.10 sound output confirmed
Accessories: none
Main specifications: 17 cm woofer diameter 165 mm x depth 78 mm weight 1.6 kg
The price has been reduced. 2025/8/1 sales price 79,800 yen There is no problem with the sound output operation, but it is inexpensive because there are very small cracks and many viscoids on the edges. JBL's classic 38cm woofer. The sharp, bouncy low range and high efficiency are attractive. It is a model that is easy to match with both 2-way and 3-way (Shota Sasaki)
Maintenance information: 2025.8.1 sweep test is good
Accessories: none
Main specifications: 38cm woofer, allowable input, 60W, 8Ω, sound pressure level, 101 dB, recommended enclosure, internal volume: 114 L to 338 L, depth: 146 mm, 8.6 kg
The price has been reduced. 2025/8/10 sales price 34,800 yen ※1 bottle only. It is a popular woofer that allows you to truly enjoy the real thrill of ALTEC sound, with its strong push and overhanging sense of energy. There is a scraped part on corn paper (Oikawa Tetsuji)
Maintenance information: 2025.4.7 operation confirmed
Accessories: none
Main specifications: 38 cm, ferrite impedance, 16 ohms, allowable input, 75 W, output sound pressure level, 104.7 dB, playback frequency band, 50 to 4 kHz, diameter 406 x depth 162 mm, weight 13.6 kg/book
The disposal price has been reduced. Member discounts are not applicable. 2025/6/1 sales price 20,000 yen. Currently sold. Max 30cm (12 inch) woofer. It seems that it is often used in combination with a front load horn enclosure as an example of use in high-output compatible units. For example: Raft Craft FM-30, etc. If you've been looking for one, take this opportunity. You can see a feeling of use such as appearance, dullness, small scratches, etc. (Kobayashi Hitoshi)
Maintenance information: 2025.5.25 Operation confirmed
Accessories: original box
Main specifications: 30cm (12 inch) woofer 8Ω 400W 96.3dB 40Hz 40-3000Hz 5.8 kg (actual measurement)
※Only 1 bottle has a dent in the center cap and a scratch on the cone paper. 38cm woofer from JBL It can also be used in theaters and is used as a bass horn driver or multi-woofer system. Thin cone paper and hard edges make it possible to play bass without feeling lumpy (Oikawa Tetsuji)
Maintenance information: 2025.5.25 Operation confirmed
Accessories: none
Main specifications: 40Hz to 2kHz 8Ω 101 dB 100W front mount 355 mm rear mount 343 mm screw pitch 370 mm diameter 388 x D146 mm 7.7 kg
Disposal prices have been reduced! Member discounts do not apply. 2023/4/2 sales price 10,000 yen*Currently sold. In-ceiling subwoofer Equipped with a single 5.25-inch woofer, it provides deep bass up to 40Hz without distortion. There is a feeling of use such as exterior, fading, abrasions, etc. (Kanai Hidetsugu)
Maintenance information: 2023.4.2 sound output confirmed
Accessories: none
Main specifications: 50 Hz to 230 kHz 96 dB 6 ohm φ391 mm depth 205 mm 6.4 kg
Disposal prices have been reduced. Member discounts do not apply. 2022/12/29 sales price 10,000 yen. In-ceiling subwoofer Equipped with a single 5.25-inch woofer, it provides deep bass up to 40Hz without distortion. There is a feeling of use on the exterior, dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information:2022.12.28 operation confirmed
Accessories: instruction manual (copy)
Main specifications: 50 Hz to 230 kHz 96 dB 6 ohm φ391 mm depth 205 mm 6.4 kg
Disposal prices have been reduced! Member discounts do not apply. 2023/4/2 sales price 10,000 yen*Currently sold. The safety wire is broken. In-ceiling subwoofer Equipped with a single 5.25-inch woofer, it provides deep bass up to 40Hz without distortion. There is a feeling of use on the exterior, such as fading, abrasions, etc. (Kanai Hidetsugu)
Maintenance information:2023.4.2 sound output confirmed
Accessories: none
Main specifications: 50 Hz to 230 kHz 96 dB 6 ohm φ391 mm depth 205 mm 6.4 kg
Disposal prices have been reduced! Member discounts do not apply. 2023/4/2 sales price 10,000 yen*Currently sold. The safety wire is broken. In-ceiling subwoofer Equipped with a single 5.25-inch woofer, it provides deep bass up to 40Hz without distortion. On the exterior, there is a feeling of use, such as cracks, fading, abrasions, etc. on the main body (Kanai Hidetsugu)
Maintenance information: 2023.4.2 sound output confirmed
Accessories: none
Main specifications: 50 Hz to 230 kHz 96 dB 6 ohm φ391 mm depth 205 mm 6.4 kg