S1500 / S2000 Protection Circuitry

The S1500 / S2000 Protection Circuitry

PROTECTION

As noted in the “Guided Tour” section of this manual, the S1500 / S2000 front- panel Protection LED indicates the activity of the relay speaker connection circuitry. When the Protection LED is lit, this circuitry is active, and all connected speakers are muted (provided with 0 volts DC), thus protecting them and preventing any audible “thump” from occurring.

The following conditions will cause the Protection LED to go on:

•Initial power-up:For approximately five seconds after initial power-up, the protection circuitry is activated and the speaker output is muted. If everything is operating normally, you will hear an audible click at the conclusion of this brief period, as the protection circuitry is deactivated and the S1500 / S2000 begins delivering signal to connected speakers (at which point you’ll hear a click). It is normal for the Protection LED to fade gradually after the amplifier is powered off.

WARNING: If the Protection LED fails to go out (and you fail to hear the accompanying audible click) approximately five seconds after power-up, turn the S1500 / S2000 off immediately and check all external devices and wiring for possible shorts or other defects.

•Overheating: A temperature sensing device in the S1500 / S2000 will cause the protection circuitry to be activated (and the Protection LED to go on) whenever the operating temperature of the unit rises above a safe level. To guard against this problem, make sure the S1500 / S2000 receives adequate ventilation on all sides and that both the front and rear panels are unobstructed.

•Severe overcurrent conditions: This occurs whenever the signal being input to the S1500 / S2000 rises to a level above 20% THD (Total Harmonic Distortion).

•Shorted speaker cables: This will occur if, due to faulty wiring, the hot and ground signals being output by the S1500 / S2000 short one another.

•Output impedance drops below 2 ohms: This can occur if the S1500 / S2000 is connected to inappropriate speaker systems (see the “Setting Up and Using Your S1500 / S2000” section on page 5 in this manual for more information).

•DC voltage detected at speaker output: The most likely cause of this is an internal failure.

In general, any time the Protection LED lights up (other than during the approximately five seconds following initial power-up), there is reason to be concerned. If this occurs, turn the S1500 / S2000 off immediately and carefully check all wiring and external devices in order to locate and correct the condition that caused the LED to light up in the first place.

For further assistance, contact your local Samson dealer. If purchased in the United States, you can call Samson Technical Support (1-800-372-6766) between 9 AM and 5 PM EST.

S2000, S1500 specifications

The Samson S2000 and S1500 are renowned headphone amplifiers that have gained popularity among audio enthusiasts for their superior performance and technological innovations. Both models embody Samson's commitment to high-quality, reliable audio solutions suitable for both professional and home studio environments.

The Samson S2000 is designed to provide high-quality sound amplification for professional-grade headphones. It offers an impressive output power of 2000mW per channel, ensuring that even high-impedance headphones can achieve full performance. One of its standout features is the incorporation of a low-noise, high-performance amplifier, which delivers clean, distortion-free sound across a broad frequency range. The S2000 includes a front-panel volume control that provides precise adjustment, making it easy for users to find the right listening level in any environment. Additionally, it features two headphone outputs, allowing multiple listeners to enjoy audio simultaneously, which is particularly useful in collaborative settings.

On the other hand, the Samson S1500 incorporates similar high-quality engineering but is designed with slightly more compact dimensions and output specifications. The S1500 provides 1500mW per channel, showcasing ample power for a variety of headphone types. This model also includes a front panel volume pot and a headphone output switch to select between two headphone outputs. A significant feature of the S1500 is its low-frequency extension, providing richer bass response ideal for those who appreciate depth in their audio experience. The S1500 incorporates advanced thermal management technology to ensure stable operation and prevent overheating, a crucial consideration for long listening sessions.

Both the S2000 and S1500 are equipped with ¼-inch and 1/8-inch inputs, making them adaptable to a wide range of audio sources. They utilize a robust, solid metal chassis designed for durability and reduced vibration, enhancing overall audio fidelity and ensuring longevity. Additionally, both models feature a sleek design, making them visually appealing in any setup.

In summary, the Samson S2000 and S1500 headphone amplifiers exemplify top-notch design, functionality, and power optimization for audio professionals and enthusiasts alike. Their combination of innovative technologies, robust output capabilities, and user-friendly features make them exceptional choices for anyone looking to enhance their listening experience.