Volume, Balance V/B Command Transmissions

USING THE IRIS

REMOTE SYSTEM

Infrared Remote Integrated System

INTRODUCTION

Key Command Transmissions

volume/

Balance (V/B)

Command

Transmissions

The IRIS preamplifier achieves its infrared (IR) remote capabil- ity by the addition of the IRIS remote RECEIVER board, which plugs into a keyed male connector at the top of the preamplifier’s Command/Memory/Display (CMD) board, containing the front-

panel key switches and legend LED's.

IRIS employs a "carrier" of bright IR pulses modulated in frequency (25/35 kHz) by a 32-bitPulse-Code-Modulation (PCM) signal. The carrier is also amplitude modulated for clocking synchronization. This code must pass stringent format check- ing at the receiver, to ensure communication security.

The IR pulses radiate from the two clear LEDs arranged in a”V” formation, protruding through the remote’s bezel. Dominant radiation is to the front, where the minute lenses are located, but considerable radiation is available to the sides and rear of the array. Thus you will likely find that the remote will communicate well to most preamplifier locations without having to aim the transmitter-but every room is different in the IR world, so you should experiment for best results, possibly also re-reading the preamplifier location recommendations earlier in this manual.

The top eight KEYS operate much like the input selector KEYS on your preamplifier. However, from REMOTE, you must hold the KEY long enough to get at least one flash from the RED (Completed-Frame) LED at the top front of the remote. The bottom KEYS, MUTE and NORMAL, operate similarly. The remaining two KEYS, CLR and SX are explained later.

Both of	the remote’s knobs are connected to a capacitive touch-
sensing	circuit. Touching either knob ALONE causes the remote

to transmit the position of BOTH knobs to the IRIS receiver. The process takes approximately 1/8 second. At each successive 1/8 second, a new 32-bit frame of knob-position data is trans- mitted, tracking your knob-motion-until slightly after you release the knob.

IRIS specifications

The Hafler IRIS is a noteworthy advancement in the realm of audio technology, particularly designed for audiophiles and sound engineers seeking high fidelity listening experiences. This speaker system epitomizes the confluence of innovative design and high-performance engineering, making it a favored choice among sound enthusiasts.

One of the standout features of the Hafler IRIS is its utilization of advanced crossover technology. The IRIS employs a meticulously designed passive crossover network that ensures a seamless transition between different frequency ranges. This technology allows for crisp highs, detailed mids, and powerful lows, creating a well-balanced sound profile that can accurately reproduce even the most complex audio tracks.

The speaker design incorporates a unique enclosure that minimizes distortion and enhances acoustic performance. This sturdy construction not only mitigates unwanted vibrations but also provides an optimal acoustic environment for sound reproduction. The IRIS is crafted with high-quality materials, including dense MDF (Medium Density Fiberboard), which further contributes to its robust build and resonance-free performance.

Another significant characteristic of the Hafler IRIS is its driver configuration. The system typically includes a high-performance woofer, midrange, and tweeter, each meticulously selected to ensure compatibility and performance consistency. The woofer is designed to deliver deep bass response, while the midrange driver excels in delivering vocals and instrumental clarity. The tweeter is engineered to reproduce high frequencies with precision, ensuring that every note resonates with clarity.

Hafler has also integrated innovative technologies to enhance user experience. With features like bi-wiring capability, audiophiles can connect their amplifiers directly to the woofer and tweeter separately, allowing for improved control over each driver’s performance. This flexibility enables users to tailor their listening experiences to meet personal preferences and requirements.

Furthermore, the Hafler IRIS is designed to fit seamlessly into a variety of audio setups, whether in professional studios or home listening environments. Its sleek aesthetic allows it to complement modern décor, making it an attractive addition to any space.

Overall, the Hafler IRIS delivers a compelling mix of design, technology, and sound quality, making it a preferred choice for those who seek a sophisticated listening experience. Its commitment to high performance and user-centric design principles ensures that it stands out in the competitive landscape of audio technology.