GEM

Central Coalfields Limited Audio Equipment Tender 2025: ISI/AAA/TRTL Specs for Amplifier, Speaker, and Wired Microphone (Q2) in India

Posted

28 Oct 2025, 11:45 am

Deadline

08 Nov 2025, 11:00 am

Value

โ‚น53,809

Location

RAMGARH , JHARKHAND

Progress

Issue28 Oct 2025, 11:45 am
AwardPending
Explore all 4 tabs to view complete tender details

Quantity

3

Category

Audio Amplifier (V3)

Bid Type

Two Packet Bid

Key Highlights

  • โ€ข Brand/OEM requirements: Not explicitly specified; bidders should verify if OEM authorizations are required
  • โ€ข Technical standards: References to ISI/AAA/TRTL-like certifications implied, with emphasis on DSP, THD, SNR, and frequency response
  • โ€ข Special clauses: Quantity adjustment up to 25% during contract; delivery time recalculation formula
  • โ€ข Eligibility: PAN, GSTIN, bank EFT mandate submission; vendor code creation prerequisites
  • โ€ข Warranty/Support: Standard warranty period requested but not quantified
  • โ€ข Penalties: Liquidated damages not specified; guidance to bidders to review ATC

Categories 1

SPEAKER

Tender Overview

Central Coalfields Limited (Coal India Limited) invites bids for Audio Amplifier (V3) (Q2), Speaker (V3) (Q2), and Wired Microphone (V2) (Q2). Estimated value: โ‚น53,809.00. Procurement targets room-filling sound solutions with multi-input capability, including 1/4" TRS/TS line inputs, XLR mic inputs, RCA/USB recording outputs, and multiple speaker/output connectors. Location not specified; scope emphasizes generic audio-visual integration for site installations. Unique aspect includes broad input/output compatibility and DSP features, with a flexible quantity clause up to 25% more during contract. EMD details are not disclosed. Deliverables must align to standard, supplier documents, and terms for vendor code creation.

Technical Specifications & Requirements

  • Product category: Audio Amplifier, Speaker, Wired Microphone
  • Key inputs/outputs: 1/4" TRS/TS line inputs, XLR mic input, 1/4" TRS mic input, 1/4"/RCA AUX inputs, USB Type A recording, 1/4" TS speaker output, binding post, barrier strip, RCA subwoofer, XLR/1/4" TRS main outputs, headphone 1/4", RCA/USB recording connectors
  • Power & performance: Power Output (RMS per channel), Total Power Rating (RMS), DSP presence, THD, SNR, frequency range, impedance, coverage patterns, IP rating
  • Construction & features: Display on amplifier, mounting type for speaker, color family, accessories included
  • Standards & compliance: References to IS/ISI/AAA/TRTL style certifications implied by tender scope
  • Warranty: Standard warranty terms requested; exact period not disclosed
  • Power source: Internal/external supply details unspecified; bidders should confirm supply compatibility
  • Misc: USB recording, multiple connector types, and compatibility with common stage setups

Terms, Conditions & Eligibility

  • Quantity flexibility: Purchaser reserves +/-25% quantity during bid and contract; delivery window recalculated per clause with minimum 30 days
  • Documentation for vendor code creation: Upload PAN, GSTIN, cancelled cheque, EFT mandate
  • Compliance: Failure to upload required certificates/documentation may lead to rejection
  • ATC/Corrections: Adhere to Bid Document, ATC, Corrigendum requirements; non-compliance may disqualify bidders
  • Instruction to bidders: Prepare and submit all specified documentation and ensure alignment with buyer terms

Key Specifications

  • Audio Amplifier with DSP capability

  • Minimum inputs: 1/4" TRS, 1/4" TS line; XLR microphone; 1/4" TRS mic; 1/4"/RCA AUX

  • Outputs: 1/4" TS, Binding Post, Barrier Strip speaker outputs; RCA subwoofer; USB recording

  • Main outputs: XLR, 1/4" TRS, RCA

  • Power & performance: Power Output (RMS per channel), Total RMS, THD, SNR, frequency range

  • Speaker specifics: Nominal Impedance, Coverage patterns, IP rating

  • Warranty: Standard warranty term to be provided; detailed in the contract

Terms & Conditions

  • Quantity can change +/-25% with adjusted delivery timeline

  • Submit PAN, GSTIN, cancelled cheque, EFT mandate for vendor code

  • Upload all required certificates; non-submission risks rejection

Important Clauses

Payment Terms

Not specified in the provided data; bidders should await ATC

Delivery Schedule

Delivery period based on last date of original delivery order; extended period uses formula (Increased quantity รท Original quantity) ร— Original delivery period with a minimum 30 days

Penalties/Liquidated Damages

Not detailed in the provided terms; watch for LDs in final contract and ATC

Bidder Eligibility

  • Submit PAN and GSTIN with bid

  • Provide EFT Mandate and cancelled cheque

  • Upload required technical and OEM documents as per ATC/Corrigendum

Technical Specifications 3 Items

Item #1 Details

View Catalog
Category Specification Requirement
Generic Parameters Type of Amplifier Amplifier with Built in Mixer
Generic Parameters Number of output channel 1, 2, 4 Or higher
Generic Parameters Power Output (RMS per Channel) (in Watt) 500-550
Generic Parameters Amplifier Class Class AB, Class D, Class G, Class H Or higher
Generic Parameters DSP (Digital Signal Processing) Yes, No Or higher
Performance Parameters Maximum Total Harmonic Distortion (THD) <=0.1%, <=1%, <=2%, <=5%, <=10% Or higher
Performance Parameters Nominal Impedance of Amplifier 4ฮฉ, 8ฮฉ
Performance Parameters Frequency Response Range (Lower Limit) 40 Hz - 50 Hz
Performance Parameters Frequency Response Range (Higher Limit) 14 kHz - 15 kHz
Performance Parameters Minimum Signal-to-Noise Ratio (SNR) (db) 60-70, 70-80, 80-90, 90-100, 100-110, 110-120 Or higher
Input Type Number of Line input Connector - 1/4" TRS 1, 2, 3, 4, NA Or higher
Input Type Number of Line input Connector-1/4" TS 1, 2, 3, 4 Or higher
Input Type Number of Microphone input Connector - XLR 1, 2, 3, 4, 5, 6, 7, 8, NA Or higher
Input Type Number of Microphone input Connector - 1/4" TRS 7, 8 Or higher
Input Type Number of Aux input Connector - 1/4" TRS 1, 2, 3, 4, 5, 6, NA Or higher
Input Type Number of Aux input Connector - 1/4" TS 2, 3, 4, 5, 6 Or higher
Input Type Number of Aux input Connector - RCA 1, 2, 3, 4 Or higher
Input Type Number of input Connector - USB Type A 1, 2 Or higher
Output Type Number of Speaker Output - 1/4" TS 1, 2, 3, 4, NA Or higher
Output Type Number of Speaker Output - Binding Post 1, 2, 3, 4, NA Or higher
Output Type Number of Speaker Output - Barrier strip 3, 4 Or higher
Output Type Number of Subwoofer Output Connector - RCA 1, 2, 3, 4, NA Or higher
Output Type Number of Subwoofer Output Connector - 1/4" TRS 1, 2, 3, 4, NA Or higher
Output Type Line Output (Preamp Out) Main Output Connector - XLR 1, 2, NA Or higher
Output Type Number of Line Output (Preamp Out) Main Output Connector - 1/4" TRS 1, 2 Or higher
Output Type Number of Line Output (Preamp Out) Main Output Connector - RCA 1, 2, NA Or higher
Output Type Number of Headphone Output Connector - 1/4" TRS 1, 2, NA Or higher
Output Type Number of Recording Output Connector - USB 1, 2, NA Or higher
Output Type Number of Recording Output Connector - RCA 1, 2, NA Or higher
Construction Display in Amplifier Yes
Features Additional Features MP3 Player with USB, MP3 Player with SD Card Reader, MP3 Player with Bluetooth
Power Source Power Supply 230 +- 10 Volt, 50Hz
Warranty Standard Warranty (in Year) 1, 2, 3, 4, 5 Or higher

AI-Powered Bidder Prediction

Companies most likely to bid

Unlock Bidder Insights

AI predictions on likely bidders

Required Documents

1

PAN Card

2

GST Registration Certificate

3

Cancelled Cheque

4

EFT Mandate certified by Bank

5

Certificates supporting technical compliance (as per ATC/Corrigendum)

6

OEM authorizations (if required by ATC)

7

Experience certificates and financial statements (if requested in T&C)

Frequently Asked Questions

How to bid for audio equipment tender in India 2025 with Central Coalfields?

Bidders should verify ATCs, upload PAN, GSTIN, cancelled cheque, and EFT mandate; ensure IS/ISI-like standards or DSP capability references; submit OEM authorizations if required and provide technical compliance certificates; follow the 25% quantity option clause and delivery formula.

What documents are required for audio amplifier and microphone bid in 2025?

Required documents include PAN, GSTIN, cancelled cheque, EFT mandate; add technical compliance certificates, OEM authorizations if demanded, experience certificates and financial statements; ensure all documents align with Buyer Added ATC and Corrigendum.

What are the key technical specifications for the amplifier and speaker tender?

Key specs include DSP-enabled amplifier, RMS power per channel, nominal impedance, THD, SNR, frequency range, multiple input types (XLR, 1/4" TRS/TS, RCA), and multiple outputs (binding post, barrier strip, USB recording). Ensure ISI/AAA/TRTL-style certification where applicable.

When is the delivery window for quantity adjustments under the option clause?

Delivery adjustments follow the formula: (Increased quantity รท Original quantity) ร— Original delivery period, with a minimum of 30 days; extended periods may be used if required by contract, subject to approval.

What is the role of EMD and how is it disclosed for this bid?

EMD details are not disclosed in the provided data; bidders should await the final ATC or Corrigendum for exact EMD amount or percentage and submission method.

What are the input/output connector requirements for the bid in 2025?

Bidders must provide specifications covering 1/4" TRS/TS line inputs, XLR mic inputs, AUX inputs (TRS/TS/RCA), USB recording, and speaker outputs including 1/4" TS, binding post, barrier strip, RCA subwoofer outputs, plus main outputs (XLR/1/4" TRS/RCAs).

What warranty expectations should bidders prepare for this procurement?

The tender requires a standard warranty; exact duration is not specified here. Bidders should confirm warranty terms in the final contract and ensure post-sale support and service levels comply with the purchase order.

How should bidders address OEM authorizations in this audio tender?

If the ATC specifies OEM authorizations, bidders must attach valid authorization letters from the OEM for the requested models and confirm compliance with any branded components or certifications required by central procurement.