Below price (2020/7/24 selling price 55,000 yen) Mid-range driver unit. It comes with a horn 8HD You can enjoy a supple and pleasant midrange. There is a feeling of use. ※ The set screw is missing one by one. serial 6209/14475
Maintenance Information: 2020.7.24 Good Sweep Check
Accessories: None
Main Specifications: Frequency characteristics 700Hz to 10kHz Allowable Input 30W Peak Input 60W Output Sound Pressure Level 106 dB/W Magnet Weight 0.45kg, Alnico V Actual Measured External Dimensions W360 × H90× D300mm actual weight measuring approx. 3kg/book
Sony's commercial 2-inch screwdriver made during the bubble period. By all means, please play it together with the ghost horn that is in stock at the same time! There is a dent in the net part of the opening, and the speaker terminals are different on the left and right (Oikawa Tetsuji)
Maintenance information: 2022.7.2 Operation confirmed
Accessories: none
Main Specifications: Titanium Diaphragm Crossover Frequency: 500Hz 110dB Compatible Horn: EV HP9040/HP6040, JBL 2360A/2365A/2366A
The price has been reduced. 2022/9/4 Selling price 250,000 yen Field (excitation) type driver* Since there is no field power supply, the sound output operation has not been confirmed, but continuity has been confirmed. It is FC400ω/400Ω (DCR) VC10.5ω/10.5Ω (DCR). The exterior is dull, and the paint is peeling off (Yasuhito Koshihama)
Maintenance information: 2022.9.4 Store operation check (continuity check only, make sure the field coil, voice coil are not broken, measure DCR with tester)
Accessories: none
Rare mid-low range compression driver unit. The diaphragm diameter is enlarged to 57 mm and a large ring magnet with a 60 mm pie is adopted. The magnetic gap uses high-grade materials such as permenjoules to achieve a profound and clear sound quality. The exterior has floating rust and thread scratches (Satoshi Yonejima)
Maintenance info: 2022.7.8 Oscillator check Good
Accessories: No accessories
Main specifications: Driver frequency for medium tones 80 to 6,000 Hz Recommended crossover 150Hz/4,000 Hz Impedance 8Ω Sound pressure 116dB Titanium diaphragm mylar edge adopted Company B Compatible with series horns 13kg
The price has been drastically reduced. 2023/2/22 sales price 330,000 yen manufacturer maintenance completed. Comes with original box A 55.5 mm diameter titanium diaphragm is used for the mid-range driver unit diaphragm using a titanium diaphragm, and an (FRP) edge is used for the edge. The outer ring has small scratches, dullness, etc. (Oikawa Tetsuji)
Maintenance information: 2023.2.22 manufacturer maintenance completed (edge correction/gap cleaning/assembly CAP screw replacement/nozzle screw replacement)
Accessories: original box
Main specifications: playback frequency 100 to 6000 Hz impedance 16 ohms diameter 130 x depth 120 mm weight 7.2 kg
Disposal prices have been reduced! (Member discounts are not applicable) 2023/3/8 sales price 330,000 yen Mid-range driver unit using titanium diaphragms A titanium diaphragm with a diameter of 55.5 mm is used for the diaphragm, and a (FRP) edge is used for the edge. The exterior has rust spots, oxidation, and paint floats. (Miura Kimiya)
Maintenance information: 2023.3.8 oscillator check OK
Accessories: no accessories
Main specifications: playback frequency 100 to 6,000 Hz impedance 16 ohms diameter 130 x depth 120 mm weight 7.2 kg
Disposal prices have been reduced. Member prices are not applicable. 2023/6/19 sales price 250,000 yen Goto mid-range driver. 16 ohm specification. In addition to sufficient efficiency, the reproduced sound with extremely low distortion with effective braking forms the main axis of the Goto unit, which was acclaimed by many enthusiasts at the time. There is rust on the whole, and there is peeling veneer on the original box (Sasaki Shota)
Maintenance Information: 2023.6.19 Operation confirmed
Accessories: nothing
Main specifications: Playback frequency band 100 to 6000 Hz, efficiency 115 dB, impedance 16 Ω (actual measurement 13.6/12.9 ohms), recommended crossover frequency: 200 Hz, 4 kHz 6.5 kg
The disposal price has been reduced! (Member prices are not applicable) 2023/12/28 sales price 248,000 yen ※ It is cheap because it is in poor condition such as oxidation or peeling. This is the SG-505TT driver for the mid and low range, which is the successor to the 555 series. It is also possible to shorten the length of the horn for a richer expression. By widening the 555's throat diameter to 30 mm compared to 17 mm, it is possible to have a richer expression and shorten the length of the horn. The exterior has peeling, rust, oxidation, etc. (Tamura Eiji)
Maintenance information: 2023.12.27 manufacturer maintained (disassembly inspection, single-sided VC replacement, edge correction, readjustment, impedance check, edge tension check, diaphragm check, voice coil check, equalizer adjustment)
Accessories: No accessories
Main specifications: Mid-range driver impedance 16 ohms maximum input 5 W output sound pressure level 110 db playback frequency band 100 to 6 kHz recommended crossover frequency 200 Hz, 4 kHz