8cm cone unit with unknown details. The metal-colored center cap is impressive. The edge is urethane, but it has good elasticity, and it seems that you can still enjoy it (Murakoshi Yoichi)
Maintenance information: 2022.10.22 sound output confirmed
Accessories: none
Main specifications: measured impedance 8/8 Ω screw pitch (diagonal) 108 mm external dimensions φ106 mm depth 44 mm 193 g
Alnico 10cm unit by Onkyo whose details are unknown. The fixed edge and thin paper cone are a nice touch. Since the wire with the faststone terminal comes out of the terminal, it seems that it was attached to the system (Murakoshi Yoichi)
Maintenance information: 2022.11.1 sound output confirmed
Accessories: none
Main specifications: impedance 8Ω rated input 1W screw pitch (diagonal) 117 mm external dimensions 102 x 102 mm depth 51 mm 202 g
* There is no problem with the current operation, but since it is inexpensive, it is sold as is without warranty. FosTeX 2-way speaker unit from the 2014/8 issue appendix of the magazine Stereo. Why don't you try making your own speaker by referring to an article in Stereo magazine (Tomonori Asane)
Main Specifications: [PT20] 20mm soft dome tweeter impedance 8Ω playback frequency band 3000Hz to 32000Hz output sound pressure level 84db input 5W recommended crossover frequency 5kHz or more [PW80] 8cm cone woofer impedance 8Ω minimum resonance frequency 130Hz output sound pressure level 83db input 8W
A full range unit from the 2016/8 issue appendix of Stereo magazine. There is no magazine itself. Uses Fostex's first aluminum cone diaphragm and center cap. It is characterized by the rise and sharpness of the sound (Tomonori Asane)
Accessories: original box
The price has been reduced. The 2022 10/8 selling price is 16,800 yen. *Currently sold. This is a 10cm full range unit produced by Fostex, limited to 1,500 units. It features an energetic sound like the frame color orange. You can feel the advantages of a small full range because of the tension in the middle range and the ease of standing up. There are solder marks and dullness on the terminals (Katsutsugu Hiura)
Maintenance information: 2022.10.8 sound output confirmed
Accessories: instruction manual original box
Main specifications: 8Ω 20-40kHz 90dB W106 x H47 x D106 mm approx. 640 g
Pioneer's 6cm full range unit, which is an appendix to STEREO magazine. Why don't you feel free to play around in various situations? It is an unused item and is in a clean state (Hiroki Aso)
Accessories: original box booklet
Main specifications: 6cm full range unit 6Ω 80-20kHz approx. 218g (1 bottle)
The price has been reduced. A full-range unit made of polypropylene cones with a magnetic-proof phase plug with a sales price of 6,000 yen on 2022 6/19. It is a unit capable of solid low-frequency reproduction even though it has a small aperture (Murakoshi Yoichi)
Maintenance Information: 2022.6.18 Operation confirmed
Accessories: original box
Main specifications: 5cm full range speaker playback frequency 160Hz to 20kHz impedance 8Ω sound pressure level 86dB
*Replaced with chamois leather by Dentec. DIATONE's premier unit. Uses alnico magnets. A unit that continues to be popular for its natural, mid-range, high-textured tone. It is unrivaled in playing vocals from old sources. The exterior is dull. Serial 9895688/9895691 (Satoshi Yoneshima)
Maintenance info: 2022.10.7 sweep test good
Accessories: instruction manual, original box
Main Specifications: Single Cone Type Full Range Foam Urethane Edge Alnico Caliber 16cm 16Ω Playback Frequency Band 80Hz to 13,000 Hz External Dimensions W173 x D94 mm Weight 0.75 kg
The price has been reduced! 2022 9/20 sales price 7,000 yen*There is no problem with operation, but since it is inexpensive, it is sold on-site. This is a full range unit dedicated to bass reflex. The adoption of a two-layer papermaking cone and a ridge-dome-shaped aluminum alloy center cap enables clear and powerful music playback. Overall feeling of use and solder marks can be seen (Daiki Goto)
Maintenance Information: 2022.9.20 Operation confirmed
Accessories: original box, gasket, instruction manual, screws
Main Specifications: Impedance 8Ω Lowest Resonance Frequency 75Hz Playback Frequency Band FO to 25kHz Output Sound Pressure Level 88dB/W (1m) Weight 0.8 kg Baffle Aperture Dimensions Φ93mm
The price has been reduced! 2022 9/11 sales price 19,800 yen*Currently sold. This is a 10cm full range unit produced by Fostex, limited to 1,500 units. It features an energetic sound like the frame color orange. You can feel the advantages of a small full range because of the tension in the middle range and the sharpness of standing up (Sasaki Shota)
Maintenance Information: 2022.9.11 Sweep Test Good
Accessories: original box, instructions, screws, gasket
Main specifications: 16Ω 20-40kHz 90dB W106 x H47 x D106 mm approx. 640 g
The price has been reduced. The 2022 8/27 selling price is 39800 yen. 25cm caliber double cone type full range unit. The actual impedance measurement is 16 ohms, this product dates from around 1964. The lightweight cone paper makes you listen to vocals in a well-balanced manner with the good response that pops out and the thickness of the mid-high range of the double cone. The exterior, gasket, and color are different on the left and right. Stains can be seen on the entire back of the cone paper. There are many adhesive marks on the edge of the main unit (Kobayashi Hitoshi)
Maintenance Information: 2022.8.27 Operation confirmed
Accessories: none
Main specifications: double cone type full range unit, 25cm (10inch) input 20W, impedance 15/16Ω (circa 1964), 8Ω (circa 1973) frequency characteristic 40Hz to 18kHz, Voice coil caliber 2.5 cm, diameter 266 x depth 109 mm 2 kg
※1 bottle only. A speaker with a cone molded from a very rare phenolic resin. The edges are also made of phenolic resin, so the low frequencies are modest, but the tasteful tone is attractive. There are rust floats, scratches, paint peeling, etc. (Oikawa Tetsuji)
Maintenance Information: 2022.9.25 Operation confirmed
Accessories: none
Main specifications: 4Ω diameter 150mm x depth 160mm 5kg
The disposal price has been reduced! (Member discounts are not applicable) 2022 5/3 Sales price 3,000 yen 2 inch full range speaker. A bargain unit that allows you to hear the high resolution in addition to the cohesiveness unique to a small aperture. Put it in a suitably sized bass reflex box and enjoy. The exterior is dull (Satoshi Yoneshima)
Maintenance Information: 2022.5.3 Sweep Test Good
Accessories: There are no accessories
Main specifications: impedance 4 ohms efficiency 87 db frequency characteristics 160 Hz to 20 kHz
The price has been reduced! 2022 9/24 selling price 298,000 yen with original box, WEMBLEY MIDDX engraved original full range AXIOM 80! The sound of a pin standing up is the ultimate in transparency. The high sound pressure that rises sharply from the mid-high range is noticeable until the source is made and the player is ready. The exterior has dullness and rubbing (Miura Kimiya)
Maintenance Information: Maintained on 2022.9.24 (total dismantling, all cones, blades, and blocks disassembled. Peel off the adhesive. Maintenance of each part 1. Reinforce cone and blade cracks with Japanese paper. Deburr the block and pull out a perfect circle. Maintenance of each part 2. Clean the porcelain circuit slit to prevent rust, and re-attach the bobbin root blade. Cone and blade repair. The dislocation of the blade and cone is repaired, and the deformation of the cone is also corrected. ADJUSTMENT ASSEMBLY, ADJUST AND ASSEMBLE EACH PART. Operation check Insert a sine wave and check the adjustment. (Maintenance set)
Accessories: original box
Main specifications: cone type full range unit 25cm aperture input 12W impedance 15Ω minimum resonance frequency 20 Hz playback frequency band 20 to 20,000 Hz void magnetic flux density 17,000 gauss voice coil caliber 2.5 cm
Pioneer full range unit with unknown details. I think it's for a car stereo. The resin cone on the urethane edge makes a sharp noise. There is rust on the aluminum frame and dullness in the cone (Murakoshi Yoichi)
Main specifications: 10cm cone type 4 ohm frame 117 x 117 mm depth 47 mm
The price has been reduced. 2022 7/23 Sales price 35,000 yen*1 bottle only. ALTEC is commonly known as “pancakes.” A full-range masterpiece unit that originated with WE's 755A. The fresh sound that pops out so you can play it is excellent. Serial 087318 (Takasaki Atsushi)
Maintenance information: 2022.7.23 sound confirmed
Accessories: none
Main specifications: 20cm full range type 8Ω (measured 8Ω) output sound pressure level 100dB W213×D59mm 2kg/book
※ There is no problem with operation, but since it is inexpensive, it is sold on-site. Full range unit dedicated to bass reflex. It has a thick frame and is well-built. The size is 12 cm, so the low frequencies are modest, but the sound quality is well-balanced and natural. Overall, there is a feeling of use such as dullness, dirt, etc. (Daiki Goto)
Maintenance Information: 2022.9.20 Operation confirmed
Accessories: original box, instruction manual, gasket
Main specifications: 8Ω, minimum resonance frequency, 67Hz, playback frequency band, F0 to 22kHz, 89dB, 50W, baffle opening dimensions, diameter 104mm, weight 0.92kg/table
* There is no problem with the current operation, but since it is inexpensive, it is sold as is without warranty. A model that has been upgraded from FF-N. It is a unit that can be enjoyed in a wide range of ways, from backloads to bass reflex enclosures. The magnetic circuit uses a large ferrite magnet with a diameter of 100 mm, the diaphragm uses Kenaf and biocellulose, and an aluminum dome for the center cap (Sasaki Shota)
Maintenance info: 2022.9.20 sweep test good
Accessories: original box, gasket
Main specifications: 12cm cone type full range unit 8Ω 92dB F0 to 18kHz
※Since it is inexpensive, it will be passed as is. ALTEC coaxial 8 inch full range unit. The 409-8D is the successor to the 409B mounted on the DIG. If you put it in a compact enclosure and drive it with a vacuum tube amplifier, it seems to make a dynamic sound. As for the exterior, there are solder marks on the terminal. Also, there are wrinkles (floats) on the TW cone on one side. (Satoshi Yoneshima)
Maintenance Information: 2022.9.15 Sweep Test Good
Accessories: There are no accessories
Main specifications: coaxial type 2-way 20cm full range 8Ω 96dB diameter 206 x D83mm 1.4 kg
It is a ferrite model, a 20cm cone-shaped full-range speaker unit representing Altec. The response is good, and the light sound is pleasant. It has high efficiency and is compatible with vacuum tube amplifiers. The exterior has age dullness and small scratches. Serial 11267/11273 (Satoshi Yoneshima)
Maintenance information: 2022.9.15 sweep check OK
Accessories: none
Main specifications: 20cm cone type full range speaker frequency characteristics 70Hz to 11kHz minimum resonance frequency 80Hz impedance 8Ω rated input 12W output sound pressure level 102dB/W/m weight 1.4kg
The price has been reduced. The 2022 4/12 selling price is 8,000 yen. Infiniti automotive coaxial 2-way unit. It seems that you can easily enjoy DIY audio in terms of brand, both in terms of looks and bright sound. There is dullness all over (Murakoshi Yoichi)
Maintenance information: 2022.3.26 sound confirmed
Accessories: none
Main specifications: coaxial 2-way 4Ω 30W 150 x 150 x H70 mm screw hole to screw hole 135 m 0,6 kg
* There is no problem with the operation, but since it is cheap, it is currently sold. The FE88ES is a popular full-range unit with limited sales and few in stock. Based on the FE83E, it is an 8cm unit developed exclusively for backroad horns, and is definitely recommended for those who make their own. There is a stain on the cone paper, and there are traces of solder in the terminal (Oikawa Tetsuji)
Maintenance info: 2022.9.14 Operation confirmed
Main specifications: Impedance 8Ω Minimum resonance frequency (fo) 100Hz Playback frequency band FO to 22kHz Output sound pressure level 90dB/W/m Maximum input 12W Diaphragm effective mass (mo) 1.3g Resonance Sharpness (Qo) 0.31 Effective Vibration Radius (a) 3.0cm Magnet Weight 334g Total Weight 785g
* There is no problem with the operation, but since it is inexpensive, it is a current sale product without warranty It is a 30cm full-range unit that employs a mechanical 2-way system. The high-frequency characteristics are extended by the free-edge subcone (Yosuke Kojima)
Accessories: none
Main specifications: Frequency characteristics 32Hz to 10kHz 8Ω Actual measured DC value 8/9Ω Output sound pressure level 100dB/W/m 4.6kg
* Currently sold item A vintage unit made in England. You can easily enjoy the thick yet well-cut British sound. There are paint chips and stains (Yosuke Kojima)
Accessories: none
Main specifications: 20cm full range unit ferrite magnet impedance 10-15Ω playback frequency band 40Hz-20kHz
The price has been reduced. 2022/7/19 Selling price 3,000 yen* Currently handed over. 10cm full-range speaker It is a bargain unit with high efficiency for its size and a wide high-frequency range. It is an easy-to-use character and seems to fit various boxes. The appearance is dull (Satoshi Yonejima)
Maintenance Info: 2022.7.19 Sweep Test Good
Accessories: No accessories
Main specifications: Impedance: 8Ω Playback frequency: 80Hz to 20kHz Output sound pressure level: 86dB Input: 30W/50W Baffle opening diameter: φ100mm
A beautiful item. Limited production model for 800 units! This is a 10cm cone-shaped full-range unit FE103EN-S by Fostex. It features a bright and firm mid-high range by adopting a high-compliance corgation damper (Shota Sasaki)
Maintenance information: 2022.9.6 Sound output operation confirmed
Accessories: original box, manual, screws, gasket
Main specifications: 10cm cone type full range impedance 8Ω minimum resonance frequency 72Hz playback frequency band f0 to 30kHz output sound pressure level 91.5dB
A beautiful item. Limited production model for 800 units! This is a 10cm cone-shaped full-range unit FE103EN-S by Fostex. It features a bright and firm mid-high range by adopting a high-compliance corgation damper (Shota Sasaki)
Maintenance information: 2022.9.6 Sound output operation confirmed
Accessories: original box, gasket, screws
Main specifications: 10cm cone type full range impedance 8Ω minimum resonance frequency 72Hz playback frequency band f0 to 30kHz output sound pressure level 91.5dB
* Since it is cheap, it will be passed as it is. It is a gem familiar from Super Swan. The solid mid-high range that doesn't make you think of it as a full range is attractive. If you combine it with an enclosure that compensates for the low frequencies, you can transform the sound quality that is unthinkable to be 10 cm. There is a discoloration on the cone paper (Shota Sasaki)
Maintenance information: 2022.9.6 Sound output confirmed
Accessories: original box, manual, gasket, screws
Main specifications: 10cm full range 8Ω F0 to 18kHz 93dB
The price has been drastically reduced! 2022/8/13 selling price 49,800 yen A 38cm full-range unit that employs the mechanical 2-way system of an electric voice. It has a dry and bright sound that goes well with old jazz, so it is recommended to play it in a slightly larger box. The appearance is dull and there are stains on the cone paper. (Tamura Eiji)
Maintenance Info: 2022.8.13 Sweep Test Good
Accessories: No accessories
Main specifications: Mechanical 2-way 38cm full range unit Frequency characteristics 34Hz to 8kHz Maximum allowable input 50W Impedance 8Ω Output sound pressure level 103dB Diameter 384mm Baffle open Caliber 353mm Depth 178mm Weight 9.1kg
It is a 13cm full-range unit that uses a large Alnico magnet of about 1.5 kg. Please enjoy the thick sound of the middle range without the sense of distortion due to Alnico. The appearance is good with little feeling of use (Ryo Mizusaki)
Maintenance information: 2022.9.5 Operation confirmed
Accessories: original box, gasket, screws, wrench
Main specifications: 8Ω Minimum resonance frequency 60Hz Playback frequency band F0 to 30kHz Output sound pressure level 91.5dB/W (1m) Input 75W Baffle opening dimension 125mm W154×H105× D154mm 2.9 kg
A rare FOSTEX limited edition full range unit has arrived. A gem that was also adopted by that Super Swan. The sound quality is silky and can be played at high speed is excellent. The cone paper has slightly turned brown (Daiki Goto)
Maintenance information: 2022.9.5 Operation confirmed
Accessories: original box, gasket, screws, instruction manual
Main specifications: 10cm full range (round frame) Impedance 8Ω (measured 8.0/7.8) Playback frequency band FO to 18kHz Output sound pressure level 93dB Input 15W
A full-range unit with unknown Victor details. Equipped with an alnico magnet. The exterior has a dirty, dull feeling of use (Hiura Katsuji)
Maintenance info: 2022.8.29 Operation confirmed
Accessories: none
Main specifications: Impedance approx. 300Ω (actual measurement) Diameter 206mm × D110mm Weight 1kg
The price has been reduced. 2022/4/22 selling price 19,800 yen beautiful goods! A 14cm full range that uses a metal cone. Details are unknown, but it seems that it is a model close to the company's Alpair 10P, etc. It's in good condition (Oikawa Tetsuji)
Maintenance info: 2021.4.21 Operation confirmed
Accessories: original box, gasket
Main specifications: 14cm full range 8Ω 87,9dB
8cm full range made by Mark Audio from the special appendix of the “Special Speaker Unit That Can Be Done with This 2019 Edition Mark Audio Edition” special appendix released by the Mook Book Series of Music Noyusha Stereo magazine This is a speaker unit. There is Kusumi (Kanai Hidetsugu)
Maintenance information: 2022.6.12 Sweep checked
Accessories: original box
Main specifications: Impedance 4Ω 8W
The price has been reduced. 2022/3/29 selling price 30,000 yen. * Distortion occurred in part of the low and middle frequencies when checking with the sweep signal, but this is the status quo. A late model of Roser's signature 20cm double cone full range. Thin cone paper and large powerful magnets create deep sound at high speed. There are many stains on corn paper (Yoichi Murakoshi)
Maintenance information: 2022.3.26 Sound output confirmed
Accessories: none
Main specifications: 20cm double cone full range 98dB playback frequency band 30-20,000 Hz ferrite magnet 202 x 202 mm depth 706 mm
The price has been reduced. 2022/7/29 selling price 59,800 yen maintained! It comes with a GREETING card in the original box. 10" unit made in England from the 1950s. The speaker impedance can be changed to 3/7.5/15Ω by connecting the jumper wires of the four terminals. It has a tasteful tone typical of vintage. Feeling of use corresponding to the year, there is dullness (Yoichi Murakoshi)
Maintenance information: 2022.7.28 Maintenance completed (correction of center misalignment of coil bobbin, peeling of adhesion of each part.)
Accessories: original box
Main specifications: Magnetic flux density 12000 gauss Maximum input 10W Measured diameter 260 x depth 120 mm Actual measured weight approx. 2 kg/book
The price has been drastically reduced! 2022/7/26 Selling price 30,000 yen*Currently sold item. Vintage unit made in England It is a British sound that is thick yet has a good notch. The appearance has dullness and oxidation on the frame. (Miura Kimiya)
Maintenance info: 2022.7.26 Operation confirmed
Accessories: No accessories
Main specifications: 20cm full range unit ferrite magnet impedance 10-15Ω
Only one bottle. It is a 20cm full-range unit equipped with an 18cm diameter magnet. The super strong magnet allows you to hear a powerful sound in combination with the backroad horn. There is a feeling of use due to aging. You can see rust floating, after painting, etc. (Daiki Goto)
Maintenance information: 2022.8.16 operation confirmed
Accessories: original box, instruction manual, gasket, screws
Main specifications: 20cm full range unit impedance 8Ω output sound pressure level 98dB playback frequency band FO to 20kHz W230 × H100 × D230mm 5.5kg
The edges are still elastic and clean. Round label late model. A famous machine with an Alnico magnet 20cm full range unit. The overhang of the sound from the middle to the middle is wonderful, and the vocals resonate sensually with a life-size sound image. Cone paper has been repainted. There is a slight dullness in the frame (Katsuji Hiura)
Maintenance information: 2022.8.14 Sound output confirmed
Accessories: none
Main specifications: 20cm full range 8Ω (actual measurement 14080 side 10ω/142590 side 9Ω) sound pressure level 89dB allowable input 40W depth 98mm 3.46kg
A rare Chrysler 10cm full range. It's a light sound with good omission. How are people who are self-made? There is a dent scratch on the center cap on one side (Shota Sasaki)
Maintenance information: 2022.8.14 sweep OK
Accessories: none
Main specifications: 10cm full range 8Ω screw pitch (diagonal) 123mm height 85mm 1kg (actual measurement)
A 38cm full-range unit that employs the mechanical 2-way system of an electro voice. It has a dry and bright sound that goes well with old jazz, so it is recommended to play it in a slightly larger box. The exterior has dullness and small scratches. (Tamura Eiji)
Maintenance Info: 2022.8.13 Sweep Test Good
Accessories: No accessories
Main specifications: Mechanical 2-way 38cm full range unit Frequency characteristics 34Hz to 8kHz Maximum allowable input 50W Impedance 8Ω Output sound pressure level 103dB Diameter 384mm Baffle open Caliber 353mm Depth 178mm Weight 9.1kg
A full-range EV unit with an impressive bright and creepy sound. It is an easy to handle unit that can sound even in a relatively small enclosure with high efficiency. The appearance is dirty and dull. (Tamura Eiji)
Maintenance Info: 2022.8.13 Sweep Test Good
Accessories: No accessories
Main specifications: Mechanical 2way 20cm full range unit impedance 8Ω output sound pressure level 95dB frequency band 41Hz to 12kHz rated input 25W diameter 213mm × D120mm Baffle Opening Diameter 181mm Recommended Enclosure 34 Liter
* When checking the sweep signal, there was a fluttering sound in the low range, but it didn't bother me when playing music. Currently sold item. A series 20cm 2-way coaxial speaker unit. Ferrite magnets are used for the magnetic circuit, and a cellular horn with a wide angle is adopted for the high frequency range. There is a repair mark on the cone paper on one side (Yoichi Murakoshi)
Maintenance information: 2022.2.27 Sound output confirmed
Accessories: none
Main specifications: Playback frequency characteristics FO to 20kHz Crossover frequency 5kHz 8Ω 10W 94dB Diameter 234 x Depth 102 mm 2.75 kg
Comes with original box. * Pass the current situation. A popular 16cm full-range unit that has been used in many self-made speakers, which was released for a limited time in 2001. The newly developed vibration plate structure “HP diaphragm” is adopted for the ES cone. The flat and fine tone is excellent (Shota Sasaki)
Maintenance Info: 2022.8.13 Sweep Test Good
Accessories: original box, manual, gasket
Main specifications: Impedance 8Ω Minimum resonance frequency 54Hz Output sound pressure level 95dB/w (1m) Playback frequency band F0-30kHz Input 80W Unit weight 4.9kg
A full-range EV unit with an impressive bright and creepy sound. It is an easy to handle unit that can sound even in a relatively small enclosure with high efficiency. The appearance is dirty and dull. (Tamura Eiji)
Maintenance Info: 2022.8.13 Sweep Test Good
Accessories: No accessories
Main specifications: Mechanical 2way 20cm full range unit impedance 8Ω output sound pressure level 95dB frequency band 41Hz to 12kHz rated input 25W diameter 213mm × D120mm Baffle Opening Diameter 181mm Recommended Enclosure 34 Liter
The price has been reduced! 2022/8/2 selling price 39,800 yen*1 bottle only. A 38cm cone type full-range unit by JBL. Unlike modern weighted bass, it reproduces bright and light lows. A standard unit that can do many types of sound makeup depending on the driver or tweeter that matches the sharpness well. The appearance is dull. Serial 106497 (Asaine Tomoho)
Maintenance information: 2022.8.2 Operation confirmed
Accessories: No accessories
Main Specifications: 38cm Cone Type Full-Range Unit Alnico 8Ω 103dB Recommended Enclosure Internal Volume 114-338L Frequency Characteristics 50-6,000 Hz Screw Pitch (Diagonal) 370mm 7kg
The price has been reduced. 2022/7/12 selling price 59,800 yen A 20cm cone type full-range speaker unit that makes use of the basic design of 130 as it is with a small aperture. It's small and has a cute appearance, but the bright, clear, and tense sound makes you feel the uniqueness of JBL enough. The exterior has dullness and rubbing (Hitoshi Kobayashi)
Maintenance information: 2022.7.12 Operation confirmed
Accessories: none
Main specifications: 20cm cone type full-range unit allowable input 30W 8Ω 97dB (1kHz) recommended enclosure internal volume 42L to 113L depth 76mm weight 2.3kg
The price has been reduced! 2021/10/9 Selling price 4,000 yen It is an ultra-small aperture full-range speaker that applies NRT (neodymium radial technology). Although it is a small aperture, the sound quality of the middle and high pitches is of uncompromising quality. The appearance is dull (Satoshi Yonejima)
Maintenance Info: 2021.10.9 Sweep Test Good
Accessories: instruction manual, original box
Main specifications: NRT (Neodymium Radial Technology) Caliber 50mm Impedance 8Ω Frequency Characteristics 200-15k 84dB External Dimensions 49×49mm Opening Dimensions 47mm Depth 30mm Dead weight 0.22kg/bottle