Restored product that replaced 28 internal deteriorated electrolytic capacitors, etc.! It is a model equipped with DBX Type1 on the famous GX-747. It is also equipped with an auto reverse function that allows you to specify the reverse position in seconds, making it one that will go down in history in terms of both functionality and sound quality. The core and taut tone have an excellent balance. There are small scratches and dullness on the exterior ※It is currently set to 60 Hz, so when using it in the 50 Hz region, please switch the internal cycle change slide switch to the 50 Hz side before use (Sasaki Shota)
Maintenance information: 2022.12.31 Maintained (pinch roller drive mechanical cleaning and grease up, tension arm partial disassembly cleaning and oil application. Auto reverse contact part contact resistance measurement repair. Regeneration equalizer unit repair (6 resistors replaced) regeneration characteristics check adjustment. Recording amplifier condenser and relay replacement, multiple switch detachments, disassembly and repair. Playback equalizer amplifier, Line amplifier, MIC input amplifier, recording equalizer amplifier section electrolytic capacitor replacement (28 pieces), print pattern damage correction treatment. Additional soldering treatment. Head tilt check and adjust playback level and recording level (bias trap, recording equalizer adjustment, recording bias adjustment). This unit is adjusted based on 200 nwb/m. When the level meter is displayed at 0 VU, the maximum front output volume is -5 dB (approx. 440 mV) as LINE output. DBX circuit section comprehensive adjustment and board cleaning procedure. Excellent recording and playback operation and sensory checks using the music source. I have confirmed that the auto reverse works properly. LINE volume cleaning, pitch control VR cleaning, tape spade adjustment, semi-fixed VR replacement adjustment. Reference value Self-Recording/Playback W&F (WTD): 0.035% (However, 19cm/s, depends on the tape used. Residual noise during blank tape playback: -53 dB (linear measurement, however) is excellent. Primary current during PLAY: 0.6 A (approx. 60 W power consumption) checked)
Accessories: manual copy
Main specifications: 4 track tape speed 19 cm/sec, 9.5 cm/sec dimensions W440 x H493 x D256 mm weight 23.2 kg
Maintained! It is a model equipped with DBXType1 on the famous GX-747. It is also equipped with an auto reverse function that allows you to specify the reverse position in seconds, and it is one that remains in history in terms of both function and sound quality. The balance between the core and the taut tone is excellent. The exterior has small scratches and dullness (Sasaki Shota)
Maintenance Information: 2022.10.7 Maintained (MUT relay drive circuit repaired due to unsoldering. Tension arm oil was applied, capstan motor shaft oil was applied, and the tape running speed was adjusted within the specified deviation (1000 Hz ± 0.8%). It has also been checked on 3000Hz standard tape. Playback head and recording head azimuth angles have been adjusted, and playback level and recording level have been adjusted to standard values. If you set the LINE output volume to the maximum with the 0VU instruction at 1kHz200nWB/m at a playback level of 1kHz200nWB/m, it will be -5.5 dB (approx. 400 mV). If you set the LINE output volume scale to 5, the level will drop by about 6 dB, so the LINE output will be about 200mV. Please refer to the level above and set it to a level that is easy to use. Power cord replacement. Power ON timer operation circuit (microcomputer circuit) repair procedure due to a broken pattern, repair due to damage to the same circuit connector attachment solderland. Auto reverse operation has been confirmed (normal operation has been checked for both playback and recording) The dbx switch has been disassembled and repaired, and the dbx level setting has been performed, and the recording and playback operation test is good. Reference value: W&F (WTD) 0.04% (19cm/s) However, during self-recording and playback, it also depends on the tape used)
Accessories: manual copy
Main specifications: 4 track tape speed 19cm/sec, 9.5cm/sec dimensions W440 x H493 x D256 mm weight 23.2 kg
A total of 134 deteriorated electrolytic capacitors have been replaced, and all other deteriorated parts have been reviewed and refreshed!! This is the pinnacle of open decks bringing together technics techniques that have been revived at enormous cost. The thickness and sharpness of the sound are completely different! Auto reverse open reel deck with a unique symmetrical head configuration. The symmetrical mechanism is utilized to ensure the same characteristics for both forward and reverse turns. Highly accurate round trip recording and playback is possible (Sasaki Shota)
Maintenance information: 2023.11.4 maintained (capstan shaft cleaning, pinch roller drive mechanical grease and oil application, pinch roller cleaning and pinch roller shaft oil application, pinch roller adhesion deterioration correction, tension arm cleaning, and rust removal. Power cord replacement. Brake pad replacement and brake adjustment, counter belt replacement 2, counter mechanism disassembly and cleaning, counter character disappearance, partial handwriting correction, tension arm shutoff detection micro switch replacement x 2. Head block cleaning and tape guide cleaning, head azimuth angle adjustment. Replace partially deteriorated electrolytic capacitors in the power supply unit, key input control circuit, reel motor control circuit, and capstan motor control circuit. Reel motor torque adjustment, capstan motor PLL lock timing adjustment, TAKEUP and BACK tension adjustment during PLAY. Replace part of the electrolytic capacitor in the amplifier circuit board, adjust the playback level and playback equalizer, adjust the recording bias, and adjust the recording level. MONITOR SW/TAPE SELECTOR SW/REC MODE Contact cleaning by SW detachment/disassembly, pitch control switch and volume cleaning, speed changeover switch, auto reverse switch, timer switch detachment/disassembly cleaning. MIC volume/LINE volume/output volume contact cleaning treatment
9) Meter lamp replacement x 2, operation switch lamp replacement x 4, PLAY, FF, REW, STOP key contact disassembly cleaning treatment. Other self-recording and playback W&F (WTD): 0.02% (19 cm/s) (depending on the tape used), residual noise: −50 dB during self-recording and playback (however, at an OUTPUT volume scale of 8, it also depends on the tape used). (Auto reverse operation and timer operation confirmed, self-recording and playback tests with music sources are good)
Accessories: none
Main specifications: 4-track 2-channel tape speed 38/19/9.5 cm/sec automatic reversal tape position detection mechanism using timer recording and playback light detection method (transparent tape) W492 x H443 x D257 mm 26.5 kgW492 x H443 x D257 mm Weight approx. 26.5 kg
Deterioration capacitor 11 pieces, volume total 5 pieces, other lamps and belts, all pin jacks etc. Replace with new items and complete maintenance of the whole body! 2 track open deck of rubox A superb fulfilling sound that can never be heard on digital devices has been revived brilliantly. I auditioned at the store, but with the thick sound of STUDER handed over, you can enjoy a thick sound that is better than the sound source before recording. Appearance has scar repair marks on the side (Sasaki Shota)
Maintenance information: 2021.2.24 Maintenance (replacement of mechanical consumable parts such as counter belts, precision polishing of heads, degraded capacitors, semi-fixed volumes, etc., replacement of all pin jacks, etc. (Operation inspection adjustment, recording readjustment.)
Accessories: 2 x No. 10 clampers, 1 DIN to RCA cable
Main specifications: 2 tracks 2 channels 38/19/9.5cm 3 motor use reel max 10 W483 × H462×D207mm 23.3kg
* The current operation is stable, but because it is for business use, it is the status quo without warranty. It is an open reel deck with high sound quality that was only made for broadcasters. Adopts a high-precision, sturdy aluminum cast deck plate. Can be used with 5/7/10.5 inch reels Built-in monitor speaker, equipped with line output key. Output level +4 dB and -20 dB can be switched. There is a crack in the left meter window (Fujisawa Yukishi)
Maintenance information: 2022.2.2 operation confirmed (2 tiger 19/38/76 cm recording/playback OK. (Monitor OK, there is a slight drop in the high range)
Accessories: Copy of instruction manual, power cord, connection cord
Main specifications: CUE switch convenient for 2-track stereo recording/playback cueing etc. W634xH1040xD759mm 90kg