Alfatron ALFC-457

General Specifications 

Type: ALFC-457 

• Frequency response: 90hz ~ 20Khz 
• Sensitivity (1M/1W): 87dB 
• Power Taps: 20W / 10W / 2.5W / 5W; 8Ω : 40W 
• Rated Power: 20W, 8Ω: 40W 
• Line input: 100V / 70V; 8Ω 
• Hole for Mounting: Ø 180 (Diameter) 
• Dimensions (mm): Ø 204 (Diameter) x 137mm 

Physical Specifications 

• Material (Panel): ABS White RAL 9016 
• Grill: Powder coated Iron Mesh Component (L. Speaker): 4” (PCK + PF) Woofer Component (H. Speaker): 3/4 ” Silk 
• Finished colour: White RAL 9016 
• Unit Weight: 2.1kg 
• Gross Weight: 13.5kg / 4 pcs 
• Packing dimensions: 58 x 55 x 28cm 

Woofer Speaker Specifications 

• Voice Coil Size: Ø 25.8 x 0.17 2 Layer 
• DC Impedance: 7Ω 
• Former: KSV 
• Magnet: Ferrite ( 416g) 
• Ø 90 x Ø32 x 15 (Y30) 
• Basket: Iron 
• Cone Material: PCK + PF 
• Spider: Conex 
• Net Weight: 795 g 

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Technical Sheet

1.Q – Is the speaker low impedance?
   A – Both low and high impedance.

2.Q – What colors do the speakers come in?
   A – White

3.Q – How many watts is the speaker.
   A – 40W at 8 ohm and can be tapped differently for 100V.

4.Q – What size is the driver?
   A – 4 inches

5.Q – Frequency response?
   A – 90 – 20 000 Hz