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Houston, TX USA

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$480.48     Availability: 6 Weeks
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MEDC DB4 Speaker (up to 25 Watts), Exd(e), Weatherproof. Class I Div 2. IP66 and IP67, intended for use in potentially explosive gas and dust atmospheres. UL listed for Class I Div 2, Groups A-D

Part# with Options:        DB408ULXN1BN
Price with Options:        480.48


(1) Power for MEDC DB4 UL
(2) Transformer for MEDC DB4/DB10
(3) Label for DB7
(4) Entries for MEDC DB4 UL
(5) Finish for MEDC DB4/DB10/DB18/DB20

  Availability 6 Weeks  ]

This range of loudspeakers, intended for use in potentially explosive gas and dust atmospheres, has a power rating of up to 25 watts and is suitable for use in all gas groups including hydrogen.

The flamepaths, flare and the body, are manufactured completely from a UV stable glass reinforced polyester.

Stainless steel screws and sinter are incorporated thus ensuring a corrosion free product. A tapered flamepath is used to overcome the problems of assembly of parallel spigot flamepaths.

An optional Exe terminal chamber is available.

An uncertified version is available for use in non-explosive atmospheres.

Models compliant to BS 5839, part 8 are available.


  • Zone 1, Zone 2 & non-Ex use.
  • Exd IIC T4/T5.
  • ATEX approved, EEx II 2GD.
  • BASEEFA certified.
  • UL listed for USA and Canada:
    • Class I, Div 2, Groups A-D.
    • Class II, Div 2, Groups F & G
    • Class I, Zones 1 & 2, AExd IIC, T4.
  • IECEx certified Gb, Db.
  • GOST R & K certified.
  • Chinese (CQST) certified.
  • Brazilian (Inmetro) certified.
  • Optional Exe terminal chamber.
  • IP66 and IP67.
  • SIL 2 Certified
  • *Certified temperature: 55C to +70C.
  • GRP corrosion-free flamepaths.
  • 119dBA at 25 watts at 1 metre.
  • 8, 15, 20 and 25 watt versions.
  • BS 5839, part 8 compliant versions available.
  • Addressable capability.
  • Power tappings, via integral transformer.
  • Ratcheted swivel bracket.
  • Stainless steel sinter.
  • Stainless steel mounting bracket.
  • Tapered flamepath.

*Depending on version.

Certification: Certified to IEC60079-0, IEC60079-1, IEC60079-7, IEC60079-31
Certified to EN50014, EN50018, EN50019
ATEX EEx d Cert. No. BAS00ATEX2097X
Ex II 2GD, EEx d IIC T4/T5
ATEX EEx de Cert. No. BAS00ATEX2098X
Ex II 2GD, EEx de IIC T4/T5
Not suitable for use in atmospheres containing carbon disulphide.
IECEx Cert. No. Exd: IECEx BAS 11.0083X
Ex d IIC T4/T5 Gb, Ex tb IIIC T100C/T135C Db
IECEx Cert. No. Exe: IECEx BAS 11.0084X
Ex de IIC T4/T5 Gb, Ex tb IIIC T100C/T135C Db
UL listed for USA and Canada:
Class I, Div 2, Groups A-D.
Class II, Div 2, Groups F & G
Class I, Zones 1 & 2, AExd IIC T4.
GOST R Certification: 1Exd IIC T4 & 1Exde IIC T4.
Russian Fire Approval.
GOST K Certification: Exd IIC T4 & Exde IIC T4.
Chinese (CQST) certification Exd IIC T5.
Brazilian (Inmetro) Certification: BR-Ex d IIC T5/T4/T135C.
BR-Ex de IIC T5/T4/Gb.
American Bureau of Shipping Type Approval DB4D and DB4E only.
SIL 2 Certification to 61508. Cert. No. Sira FSP 11011.
Material Body & horn in anti-static, UV stable, glass reinforced polyester.
Swivel bracket in stainless steel.
Captive cover screws in 316 stainless steel.
Finish: Body and horn, natural black or painted to clients colour requirements.
Rated Power: 8, 15, 20 or 25 watts RMS continuous (at 25C).
Weight: 5.0kg approx. dependent on model. (Add 0.5kg for Exe version).
Certified Temp: 55C to +70C.
Ingress Protection: IP66 & IP67.
Entries: 1 x M20 Exd.
2 x M20 Exd/Exde.
2 x 1/2" NPT.
Output Long Flare:
107 dBA at 1 Watt at 1 metre.
119 dBA at 25 Watts at 1 metre.
Measured in accordance with IEC 268.
Short Flare:
100 dBA at 1 Watt at 1 metre.
109 dBA at 8 Watts at 1 metre.
Frequency Range: 400Hz to 8kHz.
Voice Coil Impedence: 8 ohms.
Fire Retardancy: GRP is fire retardant to ISO 1210.
Mounting: Bracket with ratchet facility.
Earth Continuity: Included on Exe version..
Addressable: Consult MEDC for specification.
Labels: Duty and tag labels optional.
Transformer: Used to vary the rated power by selecting different tappings (see table).
Transformer Tappings Power
25W 20W 15W 8W
1:2 25.0 20.0 15.0 8.0
2:3 12.5 10.0 7.5 4.0
3:4 6.0 6.0 5.0 2.0
1:3 4.0 5.0 4.0 1.5
2:4 2.0 2.0 2.0 0.7
1:4 1.0 1.5 0.8 0.4

Standard: i) Loop in/loop out (4 x 2) power tap change; 8 terminals.
Optional: ii) 4 terminal tap change with 2 terminals (5 & 6) directly connected to driver (8 ohms).

Certified Temperature:
Exd (≤15W) Exd (>15W) Exde (≤15W) Exde (>15W) UL
DB4 20C +70C 20C +55C 20C +70C 20C +50C 55C +70C
DB4L* 55C +70C 55C +55C 55C +70C 50C +50C n/a

*DB4L IECEx Min Temp - 40C

B2B Checkout Options: PO#, Designated Carrier and Tax-Exempt purchase
Payment Options: Credit Card, Credit Card Over the Phone, PAYPAL, Wire Transfer, Check and Money Order

Checkout with Paypal

> CLASS I DIV 2 > SPEAKERS :    2 Items found.
E2XL15FR008A1A1B (3684) E2S  E2XL15FR008A1A1B

E2S E2xL15 15W PA Loudspeaker 118dB(A) suitable for the harshest of environments. PPS & high impact housing. 100V Line, 70V Line, 16 Ohm or 8 Ohm Versions. UL Approved for Class 1 Div 2.




MEDC DB16 Speaker (up to 30 Watts), Zone 1, Zone 2 use & non-Ex use. Exde, Weatherproof, IP66 and IP67, intended for use in potentially explosive gasand dust atmospheres. -50C to +65C. UL Listed for Class I, Div 2, Groups C & D. Groups A-D version also available.



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