Wireless microphones used to be event-hire equipment. They are now affordable enough for a classroom, a small hall, a temple or a YouTube setup — and the buying decision has become genuinely confusing as a result.
UHF or 2.4GHz: the first decision
This is the choice that determines whether the mic works reliably in your room.
- UHF — long range (typically 30-50m indoors), stable, does not compete with Wi-Fi. The right choice for halls, weddings, classrooms and outdoor events.
- 2.4GHz — shares the band with Wi-Fi, Bluetooth and every phone in the room. Fine for a small room with few devices, unreliable in a crowded hall.
If more than about thirty people will be present, choose UHF. The Salpido DWM-03 UHF dual wireless set at Rs 2,499 is built for this case, with two handheld mics on one receiver.
Dynamic or condenser?
Dynamic mics are less sensitive, reject room noise, handle loud sources and survive being dropped. They are the correct choice for live speech and singing in an untreated room — which describes almost every Indian hall and classroom.
Condenser mics are more sensitive and capture more detail, which is exactly what you do not want when there is a fan running and traffic outside. They belong in a quiet recording space.
For speech and stage use, dynamic. The Salpido MIC-02 wired dynamic microphone at Rs 499 is the straightforward option where a cable is acceptable.
When wired is the better answer
A wired mic has no batteries to die mid-event, no channel to interfere and no receiver to lose. If the speaker stands at a podium and does not move, wired is more reliable and a quarter of the price. Buy wireless because you need to move, not because it sounds more modern.
Battery and runtime
Most handheld wireless mics run on AA batteries for 6-10 hours. Rechargeable units are more convenient but leave you stranded if they run flat mid-event with no spare. For all-day events, AA batteries and a pack of spares is the more robust choice.
Matching the mic to your system
Check the receiver output before buying. Most output on 6.35mm (quarter-inch) jack, which suits a mixer or amplifier. If you are plugging into a phone, camera or laptop, you will need a 3.5mm adapter — confirm one is included rather than assuming.
For connecting to a Bluetooth speaker, check that the speaker has a physical mic or AUX input. Many do not, and Bluetooth alone will not carry a mic signal in.
Avoiding feedback
The squeal happens when the mic hears the speaker. Three fixes, in order of effect: put the speakers in front of the mic rather than behind it; lower the mic gain and raise the amplifier volume rather than the reverse; and keep the mic pointed away from any hard reflective wall.
Common questions
How far will a UHF wireless mic work? 30-50m indoors with line of sight, less through walls.
Can two wireless mics be used together? Only on different channels. A dual set like the DWM-03 is pre-configured for this; two separate single sets may clash.
Do I need a licence for a wireless mic in India? Low-power devices in the permitted bands are licence-exempt for ordinary use. Check the frequency band stated by the manufacturer.
Why does my wireless mic crackle? Usually low batteries, or interference — move the receiver higher and away from Wi-Fi routers.
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