IEHE Bhopal invites online tender for Supply of Sound System in the Institute

Sound System

Wall mount Cabinet Loudspeaker General Requirements: The loudspeaker shall be a cost-effective, 12W general-purpose cabinet speaker designed for indoor surface-mount applications. It must be suitable for both high-quality speech intelligibility and background music reproduction Acoustic Performance: Rated Power: 12W, with adjustable power tappings at 12W, 6W, and 3W to allow for 3 dB step adjustments. Sound Pressure Level (SPL): Must provide a maximum SPL of 102.0 dB at 6W/1m (1 kHz) and a sensitivity of 91.7 dB at 1W/1m (1 kHz). Frequency Range: The effective frequency range shall be from 150 Hz to 15 kHz. Opening Angles: Horizontal: 184° (1 kHz) / 86° (4 kHz). Vertical: 66° (1 kHz) / 58° (4 kHz). Electrical Specifications: Input Voltage: Designed for 100 V line systems. Rated Impedance: 833 ohms. Connection: Shall feature a 4-pole push-in terminal block on the rear panel for easy on-site wiring and power tapping. Durability: The unit must be tested for 100 hours of continuous operation at rated power in accordance with IEC 268-5 standards. Mechanical Construction Enclosure Material: The main body shall be constructed from solid MDF (Medium Density Fiberboard) covered in durable, easy-to-clean black vinyl. Front Grille: The front shall be ABS plastic covered with a fine woven cloth in matching black. Baffle Design: Shall feature an angled front baffle to optimize sound distribution within the listening area. Mounting: The rear panel must include three keyholes for quick and secure wall mounting. Dimensions: 445 mm x 151 mm x 150 mm / 111 mm Environmental Limits: Operating Temperature: -5 °C to +55 °C, Storage Temperature: -40 °C to +70 °C

Wireless Microphone System General System Requirements: Classification: The system shall be an entry-level professional wireless microphone system designed for ruggedness and ease of use in daily operations. Ease of Setup: The system must include a one-button automatic frequency scanning function to identify the clearest available channel. Transmitter synchronization shall be achieved via an infrared data link to ensure error-free setup. Frequency Management: The system shall provide 32 preset channels, with compatible groups of eight channels for simultaneous multi-channel use. Operating Bands: The system shall be available in multiple RF frequency bands, including: A Band: 618–634 MHz. B Band: 678–694 MHz. C Band: 516–532 MHz. E Band: 850–865 MHz. Receiver Specifications Type: Synthesized PLL with true antenna diversity to ensure stable RF reception. Chassis: The receiver must feature a true rack-mountable metal chassis suitable for professional installation. RF Performance: Sensitivity: <1.0 µV for 12 dB SINAD. Image Rejection: Greater than 55 dB. Audio Outputs: Balanced Output: 20 dBV (max @ 40 kHz deviation). Unbalanced Output: Adjustable from 8 mV to 0.755V RMS. Display: Front-panel backlit LCD displaying channel, frequency, and battery status. Handheld Transmitter Construction: The transmitter shall feature a rugged metal body designed to withstand the rigors of daily use. Microphone Capsule: Equipped with a cardioid dynamic capsule (PL22) for effective feedback control and ambient noise rejection. Battery Life: Must operate for a minimum of 14 hours using two AA alkaline batteries. User Interface: Features a backlit LCD display and a dedicated mute function to protect the audio channel. Bodypack Transmitter Construction: Compact and rugged metal enclosure. Input Connector: Industry-standard TA4F connector for compatibility with various lapel or headworn microphones. Antenna: Flexible external 1/4 wave antenna. Acoustic & Environmental Performance System Frequency Response: 80 Hz – 18 kHz ± 2 dB Signal-to-Noise Ratio: > 100 dB A-Weighted Total Harmonic Distortion: < 1.0%, 0.4% typical (ref 1 kHz, 40 kHz deviation)

Professional Gooseneck Microphone General Requirements: The microphone shall be a professional-grade, high-quality electret condenser gooseneck microphone designed for public address applications such as lecterns, podiums, and open conferences. It must feature a sleek, slender, and unobtrusive design to maintain a clear line of sight for the user. Acoustic & Technical Performance Transducer Type: Electret Condenser. Polar Pattern: Unidirectional (Cardioid) to ensure high front-to-back rejection, providing more gain before feedback. Frequency Response: Wide range from 20 Hz to 18,000 Hz. Sensitivity: 7.5mV/Pa Power Requirement: Operable via a DC power source ranging from 1.5V to 9V. Mechanical Specifications Overall Length: 585 mm (approximately 23 inches) Output Connector: Built-in 3-pin XLR male socket for secure and standard professional connectivity. Optional Accessories (Compatibility) To ensure system flexibility, the microphone must be compatible with the following manufacturer-specific accessories: Microphone Base: A sturdy, heavy-duty die-cast aluminium base with an integrated On/Off switch, LED indicator, and built-in housing for 2 times 1.5V UM-3 AA cells to power the condenser element. Mic Stand Adaptor: A rugged aluminium die-cast body with a female XLR connector for direct mounting and a male XLR bottom connector for cable attachment. It must include a 10-meter shielded cable and a threaded brass ferrule 5/8” 27 TPI for standard stand mounting.

Mixer Amplifier General System Requirements Type: The unit shall be a professional 120W mixer amplifier with integrated USB and Bluetooth capabilities, designed for public address and background music applications. User Interface: The amplifier shall feature a simplified user interface with preferred setting indicators (colored pins) for all front-panel knobs to ensure ease of operation for non-technical users. It must include an LED VU meter for visual output level indication and a 6.3 mm headphone socket for monitoring the mixer output. Reliability: The unit shall have no moving parts (such as hard drives) to ensure long-term operational reliability. Audio Inputs and Media Source Microphone/Line Inputs: Four (4) balanced inputs, switchable between microphone and line level sensitivity. Switchable phantom power must be available to support condenser microphones. Priority Handling: Input 1 shall have the capability to take priority over all other inputs via contact closure (Push-To-Talk) and include an optional 2-tone chime to precede announcements. Music Source: Integrated Media Player: Must support playback of MP3 and WAV files (from 32 kbit/s) via a USB pen drive (up to 32GB capacity). Wireless Streaming: Built-in Bluetooth for high-quality audio streaming from mobile devices. Remote Control: The unit must be supplied with an IR remote control for the integrated music source. AUX Input: A separate stereo Cinch input, internally converted to mono, with a sensitivity of 200 mV to 300 mV. Audio Performance and Output Output Power: 120W rated output power. Loudspeaker Outputs: Constant voltage: 100 V. Low impedance: 4-ohm. Call-Only Output: A dedicated 100 V call-only channel for priority-only areas or 3-wire remote volume control override. Frequency Response: 80 Hz to 18 kHz (+1/-3 dB at -10 dB ref. rated output). Distortion: <1% at rated output power (1 kHz). Tone Control: Dedicated Bass and Treble controls providing max ± 8 dB adjustment. System Protection: An integrated limiter circuit must be included to protect the output stage from signal clipping and overload. Insert Feature: A pair of RCA Cinch connectors shall be provided to allow the unit to be used as a separate pre-amplifier and power amplifier. Mechanical and Environmental Dimensions: 100 mm x 430 mm x 290 mm (standard 19" wide, 2U high). Mounting: Suitable for both stand-alone use and 19" rack mounting. Operating Temperature: -5 °C to +45 °C. Compliance: The unit shall comply with IEC 62368-1 (Safety), CISPR 32 (EMC emission), and EN 55103-2 (EMC immunity).

Mixing Console General Requirements The mixing console shall be a compact, versatile 6-channel analog mixer designed for a wide range of professional audio applications. It must feature high-quality microphone preamplifiers and a rugged construction suitable for both portable and fixed installations. Audio Inputs and Processing Input Channels: The unit shall provide a total of 6 line inputs, configured as 2 mono and 2 stereo channels. Microphone Preamplifiers: The console shall include 2 microphone inputs featuring discrete class-A "D-PRE" preamps with an inverted Darlington circuit for superior sound quality. Switchable +48V phantom power must be available for all microphone inputs. Channel Processing: Mono inputs (CH1-2) shall include a 26dB PAD for high-level sources. Each mono channel shall feature a High-Pass Filter (HPF) set at 80Hz with a 12dB/octave slope. Equalization for mono channels shall consist of a 2-band EQ: High (10kHz shelving) and Low (100Hz shelving) with pm15 dB adjustment. Output and Bus Section Buses: The console shall feature 1 stereo bus. Outputs: Stereo Out: Provided via 2 XLR-3-32 and 2 Phone jacks (balanced). Headphones: One (1) stereo phone jack output with a dedicated level control. Monitoring: Visual monitoring shall be provided by a 2 times 7 point LED level meter (PEAK, +6, +3, 0, -3, -10, -20dB). Technical Performance Frequency Response: pm 0.5dB from 20Hz to 20kHz (referenced to nominal output level @ 1kHz). Total Harmonic Distortion (THD): 0.01% @ +8dBu (20Hz to 20kHz), Gain knob: Min 0.003% @ +18dBu (1kHz), Gain knob: Min Hum & Noise: Equivalent input noise of -128 dBu (Mono Input Channel, Rs: 150Ω, Gain knob: Max) Crosstalk: -88dB @ 1kHz. Mechanical and Electrical Specifications Chassis: The unit shall be housed in a robust, impact-resistant, powder-coated metal chassis. Power Supply: External AC adapter: PA-130 (120V 60Hz) or MU18 (100-240V 50/60Hz) or equivalent. Power consumption shall be approximately 12W.

Indoor Wi-Fi6 Access Point General System Requirements Type: The unit shall be a high-performance, high-speed 11ax (Wi-Fi 6) indoor dual-band ceiling-mounted Wireless Access Point (AP). Standard Support: The Wireless Access Point (AP) shall strictly adhere to the IEEE 802.11ax (Wi-Fi 6) standard. Radio Configuration: The unit must be a high-power industrial ceiling-mounted AP featuring 2x2 MIMO technology for both 2.4 GHz and 5 GHz bands. Performance: The system must provide a combined wireless data rate of up to 3 Gbps to support high-speed applications such as 4K/8K streaming and VR/AR. User Capacity: The system shall support a high density of users, accommodating up to 128 concurrent users (max 64 users per band). Advanced Features: The AP shall support Multi-User MIMO (MU-MIMO), Orthogonal Frequency Division Multiple Access (OFDMA), BSS Color bit, and dynamic CCA-SD for improved interference management. Hardware Specifications Chipset: The AP shall be equipped with a high-performance 4-core Qualcomm chipset. RAM: 512MB DDR3. Antenna: Integrated internal 4x4dBi dual-band MIMO antennas. Combined Rate: A concurrent wireless rate of up to 3000 Mbps. Physical Interfaces: 1 x 10/100/1000Mbps WAN/POE port. 1 x 10/100/1000Mbps LAN port. 1 x Reset button. Provision for a DC2.0 12V 1.5A power connector. Support for Power over Ethernet (PoE) following IEEE 802.3af/802.3at standards. Thermal Management: The unit shall feature a heat sink with a snap-on structure and special surface coating to optimize heat dissipation. Indicators: LED status lights for Power, Cloud connection, LAN speed, 2.4GHz status, and 5.0GHz status. Audio & Network Management Quality of Service: Must support WMM (Wireless Multimedia Prioritization). Roaming: Support for seamless roaming to ensure uninterrupted connectivity for mobile clients. Deployment: Flexible deployment options including Standalone mode, Mobile App management, and Zero Touch Provisioning (ZTP). Network Management: Support for VLAN settings, cloud access (in gateway mode), and system logging. Management: Support for remote configuration and management. Maintenance: Features for backup/restore configuration, factory reset, scheduled reboots, and lifetime firmware upgrades. Security Requirements Encryption: Must support Wi-Fi Protected Access 3 (WPA3) and Wired Equivalent Privacy (WEP) 64-bit, 128-bit, and 156-bit. Access Control: Integrated MAC address filtering and wireless access control to identify authorized devices. Management Security: Secure Socket Layer (SSL) for remote management login and the ability to block SSID broadcasting. Environmental & Reliability Operating Limits: Working Temperature: -10°C to 55°C. Storage Temperature: -40°C to 70°C. Humidity: 5% to 95% non-condensing. Protection: ESD: Air ±8K, Touch 6K. Electrical Surge: Common Mode 2K, Differential Mode 1K. Power Efficiency: Maximum power consumption shall not exceed 16 Watts. OEM Warranty and Support Local Presence: The Original Equipment Manufacturer (OEM) must have an authorized service center or registered office in Madhya Pradesh (proof of GST/MSME/Registration required with bid). Warranty: A 2-year on-site hardware replacement warranty is required, with new hardware provided within 12 hours of a call lock (no refurbished or repaired products). Technical Support: On-site support must be available within 6 hours of a request. Future Warranty & Support: OEM Must have Warranty and support Pack Purchase Option before expiry of warranty period for Next Years. Service Availability: The OEM must provide a 24x7 1800-series toll-free number with support available in the local Hindi language. Product Life Cycle: The quoted product must have a life cycle of no less than 5 years from the date of supply, including lifetime free firmware and technical assistance. Certifications: The product must be CE, FCC, RoHS, IEC 15408 and ISO 9001. certified. Bidder Must have to submit Compliance on OEM Letter Head along with MAF.

Network Wall Mount Rack Must have to supply and installation of 15U 500x550 Network Wall Mount Rack with Glass Door and Lock with hardware, 6 Socket Industrial PDU 15AMP with MCB, Cable Manager, FAN, Hardware and etc.

Goosneck Mic Cable, Speaker Cable in meter, Installation and Accessories Complete job work with required cables, FRPVC Conduit, accessories, fitting, Installation and etc.

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