
400A-4000 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $12.99 | Condition is Used, Threshold Brochure 7 pgs 1979, 400a, 4000, CAS1, NS 10 Articles+Specs, Amplifier, shipping cost = $3.00 | 99.4% |



The Threshold 400A-4000 is a high-performance, robust audio amplifier designed for professional sound reinforcement applications. This versatile amplifier can handle a wide range of power outputs, from 400 watts per channel at 8 ohms to 2000 watts per channel at 4 ohms, making it an ideal choice for various sound systems.
The Threshold 400A-4000 features a Class D topology, which provides excellent efficiency, low heat generation, and minimal weight. This design also ensures a fast and dynamic response, ensuring crystal-clear sound quality even at high volume levels. The amplifier uses high-quality components, including MOSFET power transistors and high-frequency transformers, to deliver superior audio performance.
The Threshold 400A-4000 comes with a user-friendly operating manual that provides detailed instructions on how to set up, configure, and operate the amplifier. The manual includes information on connecting the amplifier to a power source, setting the gain and EQ settings, and troubleshooting common issues.
The amplifier also includes a comprehensive schematic diagram, which provides a visual representation of the internal circuitry. The schematic diagram can be useful for advanced users who want to modify or repair the amplifier, or for those who want to gain a deeper understanding of how the amplifier works.
The Threshold 400A-4000 is ideal for use in a variety of settings, including live music venues, schools and universities, houses of worship, and corporate events. Its robust design, high power output, and versatile features make it a reliable and powerful choice for any audio reinforcement application.
Pros of buying a 400A-4000 operating manual and schematic:1. Comprehensive understanding: The operating manual provides detailed instructions on how to use the equipment safely and efficiently, while the schematic diagram helps in understanding the internal workings of the equipment.
2. Troubleshooting: With the schematic, it becomes easier to identify and solve problems that may arise during operation.
3. Maintenance: The manual provides guidelines on regular maintenance tasks to ensure the equipment operates at its best and for a longer period.
4. Training: The manuals and schematics can be used for training new operators, reducing the risk of errors and accidents.
Cons of buying a 400A-4000 operating manual and schematic:1. Cost: Manuals and schematics for industrial equipment can be expensive, especially if they are not readily available.
2. Complexity: The manuals and schematics can be complex and difficult to understand for those without technical knowledge.
3. Availability: Not all manufacturers provide manuals and schematics for their equipment, making it difficult to obtain them.
Conclusion:Buying a 400A-4000 operating manual and schematic can be beneficial for operators and maintenance personnel, as it provides a comprehensive understanding of the equipment and helps in troubleshooting and maintenance. However, the high cost and complexity of the manuals and schematics can be a disadvantage for some. It is recommended to weigh the pros and cons carefully before making a decision to purchase. If the equipment is critical to the operation of a business, it may be worth the investment to ensure safe and efficient operation.
Details:
Threshold model 400a operating manual. Includes fold-out schematics. Buyer pays $5 shipping in Cronus. Manual looks good but has binding coming loose as shown.
Nice to have if you own one of these fine units.
specifications vintamanual:
- brand: Threshold
- mpn: 400a-4000
- part type: Manual
general vintamanual:
- category: Electronics > Audio Video > Parts Accessories > Vintage Manuals
offer vintamanual:
- price: $12.99
- item condition: Used
- sold #: 31
- in stock #: 1
- started: june 29, 2024
- availability: in stock
- options: ship-to-home
seller vintamanual:
- city: orland park, illinois
- rating: 99.3%
- # reviews: 6593
returns vintamanual:
- policy: no returns
payments vintamanual:
- wallet: apple-pay
- credit card: visa
shipping vintamanual:
- class: standard
- type: fixed
- transit: 7-12 days
- service: standard
