A-PLUS LF-1850
PRICE ON ENQUIRY
A-PLUS LF-1850: professional loudspeaker driver. Size: 18 inch. Impedance: 8 Ω. Power handling: 1,800 W nominal, 3,600 W continuous. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
PRICE ON ENQUIRY. For the price, exclusive offers, delivery timelines, or any other information, please DM us or call +91 89818 07755 / +91 91477 00677. We will gladly share a personalised quotation for Shivansh Electronics, Kolkata, West Bengal, India. All payments are processed securely through Razorpay, our trusted payment gateway partner.
Specifications
| Model | LF-1850 |
| Nominal Diameter | 18 inch |
| Nominal Impedance | 8 Ω |
| DC Resistance | 5 Ω |
| Nominal Power Handling | 1800W |
| Continuous Power Handling | 3600W |
| Sensitivity (1W/1m) | 96dB |
| Frequency Range | 25–2000Hz |
| Voice Coil Diameter | 5in (125.5mm) |
| Voice Coil Material | Copper i/o |
| Former Material | Glass Fiber |
| Winding Height | 29mm |
| Magnet | Φ280 x H30mm |
| Basket | Aluminium |
| Suspension | Double |
Product overview
The A-PLUS LF-1850 is a professional loudspeaker driver from A-PLUS, Lf Series.
| Nominal Diameter | 18 inch |
| Nominal Impedance | 8 Ω |
| DC Resistance | 5 Ω |
| Nominal Power Handling | 1800W |
Specifications
| Model | LF-1850 |
| Nominal Diameter | 18 inch |
| Nominal Impedance | 8 Ω |
| DC Resistance | 5 Ω |
| Nominal Power Handling | 1800W |
| Continuous Power Handling | 3600W |
| Sensitivity (1W/1m) | 96dB |
| Frequency Range | 25–2000Hz |
| Voice Coil Diameter | 5in (125.5mm) |
| Voice Coil Material | Copper i/o |
| Former Material | Glass Fiber |
| Winding Height | 29mm |
| Magnet | Φ280 x H30mm |
| Basket | Aluminium |
| Suspension | Double |
A-PLUS LF-1850: frequently asked questions
What is the price of the A-PLUS LF-1850?
The A-PLUS LF-1850 is available on price enquiry. Contact us on WhatsApp or call +91 89818 07755 for the price and offers.
Where can I buy the A-PLUS LF-1850 in India?
The A-PLUS LF-1850 is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Replacing a woofer in a PA cabinet
Sound rental companies, DJs and service technicians.
Connections
| Connect | To |
|---|---|
| Crossover network LF output (or amplifier for a full-range box) | LF-1850 terminals (observe + / −) |
Setup
- Confirm the cabinet takes a 18 inch driver and the same impedance (8 Ω).
- Unscrew the old driver, fit the LF-1850 with its gasket and tighten the screws evenly.
- Wire it with the correct polarity, then test at low level before full power.
Tip: Nominal power handling 1800W; sensitivity 96dB; frequency range 25–2000Hz.
Workflow 2: Building a subwoofer cabinet
Cabinet builders making bass bins for PA systems.
Connections
| Connect | To |
|---|---|
| Processor low output | Power amplifier input |
| Power amplifier output | A-PLUS NETWORK BOOM + input, then LF-1850 |
Setup
- Choose a bass-reflex or horn-loaded cabinet designed for this driver size.
- Feed the cabinet from a processor low output or a low-pass network so only bass reaches the driver.
- Seal the cabinet airtight around the driver and the terminal plate, then test at low level.
Tip: Nominal power handling 1800W; impedance 8 Ω.
Workflow 3: Original spare for A-PLUS cabinets
Owners of A-PLUS loudspeakers who need a genuine replacement.
Setup
- The LF-1850 is the factory-fitted component in: A-PLUS AP-18B, A-PLUS LF-3600.
- Order the same part to keep the cabinet sounding as designed.
