Your Harsh & Hazardous Area
Solutions Company

Sales and advice call or email +44 (0)1925 852745
Opening times: Mon - Thur 8am-5pm / Fri 8am - 3pm

  1. Trade Account
  2. Videos
  4. Contact
  5. News
  6. Basket
  7. Login
  8. Register
You are here
MEDC DB4B Speaker


Availability: Enquire about stock

Up to 25 Watts, Ex d(e), Weatherproof

POA excl. VAT

MEDC DB4B Details

The DB4B is a high power explosion proof loudspeaker, introduced as a replacement for the current DB4 with improved intelligibility and acoustic performance. Certified for use in a wide range of temperatures (from -55ºC to +70ºC) the Ex enclosure is manufactured from GRP with a rugged thermoplastic flare providing a corrosion free and aesthetically pleasing product.

The frequency response of the unit ensures that critical voice messages and general alarm tones are highly intelligible. The specific SPL figure for sensitivity is 1W @ 1m is 113dB whilst at 1m the 25W unit produces 127dB, the 15W unit 125dB and the 8W unit 123dB.

Options include DC blocking capacitors for monitored systems, resettable fuses for compliance with marine regulations and a swivel bracket that gives the installer greater flexibility when positioning the unit. The short flare option is a worthy addition to the range offering a high SPL and wide dispersion angle in a compact unit. 


  • Ex d / Ex de IIC / IIIC T4/T5/T6.
  • ATEX certified.
  • IECEx certified.
  • Certified temperature -55ºC to +70ºC.*
  • IP66 & IP67.
  • Optional Ex e terminal chamber.
  • 127dB at 25W, 1m.*
  • 8W, 15W & 25W versions.
  • Power tappings, via integral transformer.
  • Frequency response 350Hz - 8kHz.
  • Ex enclosure - Glass reinforced polyester.
  • Flare - High impact thermoplastic polyester.
  • Stainless steel mounting bracket and cover screws.
  • Mounting bracket has ratchet facility as standard.
  • Optional swivel bracket available .
CertificationATEX, IECEx, 
Area ClassificationZone 1, Zone 2 & non-Ex use.
Ambient Operating Temperature-55°C to +70°C
Ingress ProtectionIP66 & IP67
MaterialEx enclosure - Flame retardant, UV stable Glass Reinforced Polyester

Flare - Flame retardant, UV stable thermoplastic polyester

Output113 dBA at 1W at 1 metre
Transformer100V line or 8Ω
 127 dBA at 25W at 1 metre (long flare IIC version)
EntriesUp to 2 x M20 or 1/2" NPT. Blanking plug available
WeightEx d - 5kg, Ex de 5.8kg. Based on long flare with transformer
Tappings25, 12.5, 6, 4, 2, 1 (at 25W)
OptionsPower (8W, 15W, 25W), body colour, suitable for Gas or Gas and Dust, Ex atmospheres,

Tag & duty labels, entries, capacitor, short flare,

Ex e terminal chamber, transformer voltage

Recently viewed

You are here