INTRODUCTION

Thank you for your purchase of the HA204 Headphone Distributor (Pat. Pend.). The HA204 will power four pairs of stereo earphones or headphones for high quality audio monitoring. The unit is ideal for expanding head- phone/earphone outputs on portable CD players, DVD players, electronic game units etc.

DESCRIPTION

REAR

STEREO INPUT: Stereo 1/8" TRS jack for

connection to a stereo line-level source. This jack may also be connected to a

stereo headphone output.

DC PWR: For connection to an optional AC power supply. Rolls Model PS27 12VDC, 150mA.

ON/OFF SWITCH: Connects/disconnects primary power to the HA204.

BOTTOM

Battery Cover: For battery replacement, carefully press in the tab at the top of the battery cover and remove the battery.

Replace with new 9 volt (alkaline recom- mended) battery observing polarity. Place the new battery into the HA204 battery slot and replace the battery cover.

TOP

PWR LED: Indicates that the HA204 is in operation via battery power, or connected to an external AC power supply and is receiving power.

LEVEL 1 - 4: Controls the level of the indicated channel output.

 

STEREO

 

INPUT

1

www.rolls.com

2

 

12 VDC

ON

+

OFF

-

2x4

PWR

two by four

Headphone/Earphone

Amplifier Pat. Pend.

3

4

 

SPECIFICATIONS

 

Input Impedance:

100K 9 unbalanced

Max Input Level:

+14 dBV

Input Connectors:

Stereo 1/8" (3.5mm) TRS phone

Outputs:

(4) 1/8" (3.5mm) Stereo TRS phone

Output Impedance:

51 9 each output

Max Gain:

20 dB/Channel

LEVEL

LEVEL

LEVEL

LEVEL

 

 

OUT

OUT

OUT

OUT

ONE

FOUR

TWO

THREE

 

 

 

FRONT

OUT ONE - FOUR: 1/8" stereo TRS jack for connection to stereo headphones/ earphones.

CAUTION: Plugging a mono plug into the Phone Outputs may cause permanent damage to the unit. Use ONLY TRS stereo plugs in these jacks.

S/N Ratio:

>90 dB

THD:

<.008%

IMD (SMPTE)

<.008%

Power:

9V battery (not included)

 

12 VDC adapter (Rolls Model PS27)

Weight:

1 lbs (.45Kg)

Size:

3" x 4" x 1.25" (8 x 10 x 3.2 cm)

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Rolls HA204 owner manual Introduction, Description, Specifications

HA204 specifications

The Rolls HA204 is a notable addition to the world of aviation engines, specifically designed to enhance the performance and efficiency of advanced aircraft. As a turbocharged engine, it boasts an impressive power-to-weight ratio, making it an attractive choice for both general aviation and industrial applications.

One of the standout features of the Rolls HA204 is its cutting-edge design, which incorporates advanced materials and manufacturing techniques. This allows for increased durability and longevity, while also minimizing maintenance costs for operators. The engine utilizes a state-of-the-art alloy composition that offers enhanced resistance to high temperatures and stresses, ensuring reliable performance even in the most challenging conditions.

The HA204 engine is equipped with a high-efficiency turbocharger that significantly improves its power output without adding excessive weight. This feature not only boosts performance during takeoff and climb but also contributes to fuel efficiency, making it an environmentally friendly choice in an industry that is increasingly prioritizing sustainability. The turbocharger operates in conjunction with an innovative fuel management system that optimizes fuel consumption across various flight profiles, further enhancing operational efficiency.

In terms of technology, the Rolls HA204 integrates advanced electronic control systems that offer precise monitoring and adjustment of engine parameters. These systems allow for real-time data analysis, enabling pilots to make informed decisions during flight. Enhanced diagnostics capabilities facilitate early detection of potential issues, ultimately increasing safety and reliability.

The HA204 also features a modular design for ease of installation and maintenance. This approach minimizes downtime for aircraft operators, ensuring that their fleet remains operational and efficient. The engine’s lightweight construction combined with its robust performance characteristics makes it suitable not only for fixed-wing aircraft but also for rotorcraft and unmanned aerial vehicles (UAVs).

Overall, the Rolls HA204 represents the convergence of innovation and tradition within the aviation industry. Its impressive array of features, from turbocharging technology to advanced software integration, positions it as a formidable contender in the aerospace sector. As the demand for efficient, high-performance engines continues to grow, the HA204 stands out as a prime example of Rolls' commitment to advancing aviation technology. This engine is poised to play a key role in shaping the future of aerial transportation, offering both pilots and operators a reliable and powerful option for their aviation needs.