$135.00 per pr

Quantity Price
pr $135.00
2+ $120.00
4+ $110.00
per pr
All prices shown are (inc. GST)


Employing an all-weather polypropylene cone and rubber surround ensuring extended service life
when used either for indoor or outdoor applications. Extremely compact it is well suited to confined areas. The C 0840 is an excellent choice for mounting in boats, alfresco areas, bathrooms, under eaves etc. Installation is made very simple by the in-built swivel clamps.
Suits ceilings or walls up to 29mm thick. Sold in pairs. Ceiling or panel cut out required 140Ømm.

IP65 rated for outdoor use. Great for boats, yachts, outdoor areas etc.
Features aluminium grill & stainless steel fixings.

Information & Downloads


  • Impedance: 4Ω
  • Rated power: 20W RMS
  • Max power: 30W
  • SPL 1W @ 1m: 88dB
  • Freq response: 65Hz - 17kHz
  • Weight: 710g
  • Mounting hole size (mm): 140Ø
  • Dimensions (mm): 167Ø x 62D
    • *Specifications are subject to change without notice.

Warranty & Returns


We offer 12 months warranty on this product from its date of purchase. This is available from Altronics stores, online purchases or Altronics resellers. In accordance with our full warranty terms we will repair, replace or refund if goods you have purchased from us are defective.


Not withstanding our warranty policy, if you are dissatisfied with our goods or service you may return the goods within 14 days of our despatch date. Simply contact us for a return authorisation number and we will refund your purchase in full, less transport costs on receipt of goods. All returned goods must be in as sold condition including all packaging, instructions, invoices etc.

Accessories (Sold Separately)