Specifications include, but are not limited to: 2.6.1 Replacement Equipment and Functionality At a minimum, the proposed system should meet the City’s needs and requirements as outlined in this RFP. System proposals and design should anticipate that this system will be in place and used by the City for the next 10 years and needs to be flexible and upgradeable to meet changing needs and technologies. A state of the art, professional, broadcast-quality system is a required outcome for this project. 2.6.1.1 Council Chambers Audio System The principle sound reinforcement system for the Council Chambers and sound pickup for the production/broadcast equipment. a. Audience Microphone and podium Qty 1 Extra tall (approximately 24”) gooseneck with cardioid pickup pattern. Microphone to include windscreen and XLR connector. This microphone intended to be used by standing audience members and will be “on” whenever the sound system is on (i.e. audience members should not be required to turn the mic on/off). b. Backup Wireless Microphone System: Broadcast-quality wireless microphone system with frequency-adjustable transmitters and receivers. System to include both a handheld and lavalier/beltpack transmitter (both capable of being used at the same time). Transmitters should have a battery gauge and minimum 6-hour battery life. Prefer microphones capable of using regular batteries (i.e. 9V, AA, etc.) over rechargeable batteries. c. Mix-Minus Sound System - Professional multiple mixing inputs and multiple separately mixable outputs. Allows for multiple speaker zones in Council Chambers to reduce possibility of audio feedback thru sound system. Unit must be controllable by integrated control system and include interface for the AV Operator to increase/decrease the attenuation level of each microphone individually and to see the volume level with independent VU meters/level indicators for each mic. Interface to always be immediately viewable and available to the AV Operator, much like a physical mixer would be (i.e. not buried in a menu of the control system). This could be accomplished thru a piece of hardware, or virtually on a touchpanel or monitor. System should be calibrated on-site by a sound engineer to maximize the system’s acoustic properties while minimizing the potential for feedback. Default system settings should automatically load each time the sound system is started. City staff to be given training on how to adjust default system settings. d. Compressor/Limiter: 2-channel compressor/limiter, expander/gate, peak limiter, with front-panel LED display. Unit will be used to ensure consistent levels are output for all audio sources played on CGTV. e. Digital Audio Recorder: Dedicated digital recorder to record audio files for minute taking purposes. Recorder should be capable of recording to a variety of audio formats (i.e. .mp3, .wav, etc.). Unit must have a USB interface on which to record or transfer the audio files, or be physically connected to the City’s LAN and configured to transfer audio files across the network. Audio recorder should default to recording the live audio feed played in the Council Chambers sound system; not the production audio output on CGTV. f. Audio Distribution Amplifiers and Transformers: As needed to duplicate, distribute, and transform highquality, stereo audio signals as necessary by the system’s design. It is expected that much of the audio will be transmitted digitally throughout the system. g. Equalizer/Processor: For the sound reinforcement system in Chambers, this device will provide multi-band digital graphic equalization, with compressor/limiter, and feedback elimination filters. In combination with the mix-minus mixer, system engineer should minimize the possibility of feedback in the sound system. Professional sound engineer required to setup and maximize effectiveness of this solution for Council Chambers sound system. h. Amplifiers: In coordination with the output from the mix-minus sound system, a sufficient number of amplifier channels will be provided to ensure sufficient sound reinforcement for Council Chambers’s multiple speaker zones. i. Assistive Listening System: System to provide advanced sound reinforcement for those with hearing impairments. System must include RF transmitter and at least four (4) personal receivers with on/off and volume control knobs. Earpiece for receivers to be capable of clipping on the ear or being worn over the head (no earbuds).
