Scarce! An interface network for bi-amp driving the company's woofer TL-1601A and driver TD-4001. In addition to the increased size of the input terminals dedicated to LF and HF, the design has been applied with a low loss and low leakage concept common to the TN series. What about those thinking about a large bi-amp system? (Sasaki Shota)
Maintenance information: 2023.11.27 Operation confirmed
Accessories: none
Main specifications: Recommended speaker unit TL-1601a TH-4001+TD-4001 Recommended crossover frequency 600 Hz to 800 Hz W250 x H300 x D108 mm 2.3 kg
Scarce! An interface network for bi-amp driving the company's woofer TL-1601A and driver TD-4001. In addition to the increased size of the input terminals dedicated to LF and HF, the design has been applied with a low loss and low leakage concept common to the TN series. What about those thinking about a large bi-amp system? (Sasaki Shota)
Maintenance information: 2023.11.26 operation confirmed
Accessories: none
Main specifications: Recommended speaker unit TL-1601a TH-4001+TD-4001 Recommended crossover frequency 600 Hz to 800 Hz W250 x H300 x D108 mm 2.3 kg
Western Labo 2-way crossover network 597A dedicated network. If you use 597A, please give it a try. The exterior is dull over time and has small scratches (Satoshi Yonejima)
Maintenance information: 2023.7.28 Sound output operation confirmed
Accessories: There are no accessories
Main specifications: crossover 3khz W150 x H150 x D208 mm weight 3.7 kg
A model made as a network for the company Tweeter 1710 and speakers SP-8716. The surroundings are covered with carbon, and the inside uses a super permalloy core. Improvement of lingering and natural sound reproduction can be obtained by improving network filter characteristics and auditory distortion. The appearance has abrasions and scratches. (Eiji Tamura)
Maintenance information: 2022.1.21 operation confirmed (ATT is also not available)
Accessories: No accessories
Main specifications: 8Ω/16Ω switching SW ATT5 stage change switching W270 ✕ H110 ✕ D385mm Weight 12.2kg
Maintained! It is a large input 2-way network used in ALTEC A5, etc. The high frequency attenuation attenuator can narrow down the driver to -16 dB with 10-stage switching in -2 dB steps. There is a feeling of use such as appearance, abrasion, dullness, etc. (Kobayashi Hitoshi)
Maintenance information: 2023.8.15 maintenance (characteristics/sound output check, ATT cleaning, terminal contact cleaning)
Accessories: none
Main specifications: 2-way network, 2 dB step/10 stage attenuator, allowable input, 250 W, crossover, 500 Hz, impedance 16 ohms, actual size W283 x H305 x D138 mm, approx. 8 kg
We have drastically reduced prices! 2021/10/24 sales price 148,000 yen 2015 maintenance product. It is a large input type 2-way network used for ALTEC A5 etc. The high frequency attenuation attenuator can narrow the driver to -16dB by 10-stage switching of -2dB steps. Even if you narrow down to -4dB, such as the old network N-500-F, it is a must-see for those who are noisy at high frequencies. I think that the balance is good around -10dB (Yasuto Koshihama)
Maintenance information: 2015.11.2 Maintained (terminal cleaning. ATT (SW) cleaning Swap some resistors and adjust the deviation of the left and right sides. The capacitor is restored to the original capacitor that remained inside by removing the film-con that had been replaced. Input/output waveform and balance check, sound output check. Check the frequency characteristics measurement (~42 kHz) and confirm that the capacitor can be used as it is)
Accessories: None
Main specifications: 2 way network 2dB step/10 stage attenuator Allowable input 250W crossover 500 Hz impedance 16Ω Actual size W283 × H305 × D138mm Approx. 8kg
A crossover 500 Hz network designed for halls and theaters. The professional-like crossover correction circuit realizes accurate operation, making it a durable network. There is a feeling of use appropriate to the model year (Oikawa Tetsuji)
Maintenance information: 2023.11.20 operation confirmed
Accessories: none
Main specifications: impedance low range 12 to 16 ohm/treble range 12 to 16 Ω treble range attenuation 0, 2, 4, 8 dB W190 x H160 x D210 mm 5.5 kg/book
Maintained! A crossover 500 Hz network used for the A5. The sound loss is very good, probably because of the large condenser. It has an overhang and is perfect for cutting! It's a very attractive sound not only for Altec users but also for 500Hz networks. The exterior has aging scratches, dullness, etc. (Kobayashi Hitoshi)
Maintenance information: 2023.5.10 Maintained (coil capacitor re-fixed, reinforced. Rust removal treatment for screws such as screw-type ATT. Panel crack bonding treatment. A frequency characteristic measurement check (~ approx. 42 kHz) was performed, and the original capacitor was continuously used for good results. Input/output waveform and balance check, sound output check)
Accessories: none
Main specifications: crossover 500 Hz HF gain 4 stage switching (short plate) W203 x H270 x D115 mm 7.2 kg (actual measurement)