Evidence checklist
Stage Monitor System
A stage monitor system is the cabinet plus the amplification, the processing, the cabling and the documents that make those parts one purchase. This guide lists the fields to freeze before an RFQ. It is a specification exercise, not an environmental pledge and not a stock list.
- System type: passive wedge, powered wedge, in-ear, or still undecided.
- Continuous power and the named test method.
- Impedance, nominal and minimum, when a passive hop exists.
- Frequency response with the decibel window.
- Maximum SPL with distance, weighting and duration.
- Coverage angle at -6 dB, horizontal and vertical.
- Input, processing, rigging or mounting, environmental rating.
Four evidence packs inside the system
1. Acoustic pack
Ask for sensitivity at 1 W / 1 m if the supplier prints it, and for maximum SPL at a stated distance. A figure such as 1 m on axis is a condition, not a venue prediction. Frequency response should say whether the limits are -3 dB or -10 dB. Coverage should say -6 dB. Without those windows, two stage monitor system quotes cannot be lined up.
2. Electrical pack
Passive rows need impedance and recommended amplifier power. Powered rows need input voltage, frequency, phase, current and amplifier duty cycle with the tone used for the test. Connector type is part of the control interface. A network port, if present, needs the protocol name and who supplies the switch.
3. Mechanical pack
Record footprint, weight, wedge angle and a second angle if the shoe is reversible. Service access for a driver or an amplifier module changes the spare parts list. Rigging hardware and a yoke are separate from a floor wedge unless the drawing shows the points. Ambient temperature limits belong beside the mechanical drawing.
4. Commercial pack
Quantity in cabinets, pairs or systems. US destination. Requested timing. Incoterm. Packing. Freight. Commissioning scope. Consumables and a spare transducer. Optional budget with currency and a per-unit or whole-order basis. Supplier preference is high-end, mid-range, budget or undecided, and it is not a score.
Limits of this checklist
- It cannot prove compatibility with a house console, an amplifier or a wireless rack.
- It cannot assign an ingress protection code the supplier did not print.
- It cannot turn a peak SPL sticker into a continuous level at the performer.
- It cannot replace a qualified review of rigging load or electrical safety.
AES2-2012 is a loudspeaker power standard buyers can ask a supplier to cite when the datasheet uses it. IEC 60268-5 is a sound-system measurement reference buyers can ask about for frequency response and sensitivity conditions. Citing the names here does not mean a proposed cabinet conforms. UL, ETL or FCC documents, when relevant to a powered or wireless device, must show the model. ISO 9001, if offered, describes a quality system and still needs the certificate holder named.
Public framing for question shape includes manufacturer product-family pages such as the QSC products overview at qsys.com. That page is a reference for how families are presented. It is not a quotation to this desk and not an authorization.
RFQ questions this checklist is meant to answer
What do I send if the model is unknown?
Send the stage monitor system duty, the acoustic limits you care about, quantity, destination and the files you can attach in words. Leave system type marked pending if powered versus passive is undecided. Factories can then propose a model instead of guessing from a nickname.
How do I write an optional budget?
Use a currency and a basis, for example a per-cabinet band or a whole-order band. Do not write a percentage off a market price. This site has no measured market price to subtract from. The budget is a target, and the factory number arrives later.
What is a specification deviation?
Any answer that misses a mandatory field: a different coverage, a missing yoke, a different mains voltage, or a test method you did not ask for. The supplier should list it. Your engineer accepts or rejects it. The desk stores the list.
When is the brief ready?
When open fields are labeled open, mandatory fields have a number or a range, and the commercial pack has quantity and destination. A factory acceptance test and incoming checks can stay as later steps. Readiness is not the same as an issued purchase order.
Prepare a Comparable RFQ
Use the form to request factory quotes against this stage monitor system list. Link back to inquiry options and powered fields if you need a narrower row. The procurement brief repeats the evidence idea in article form.