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  • GD-4440-BL
    Nominal Impedance: 8 Ω
    Diaphragm Material: Polyimide Plastic
    Voice Coil ⌀ : 1.75 inch / 44.4 mm
    Voice Coil Material:CCAR/CCAW/ALR/SV
    Frame+Diaphragm+ erminal+Voice Coil
  • GD-4440-TR
    Nominal Impedance: 8 Ω
    Diaphragm Material:  Polyimide Plastic
    Voice Coil ⌀ : 1.75 inch / 44.4 mm
    Voice Coil Material : Round Al Wire
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-4440-YTR
    Nominal Impedance: 8 Ω
    Diaphragm Material:  Polyimide Plastic
    Voice Coil ⌀ : 1.75 inch / 44.4 mm
    Voice Coil Material : CCAR
    Frame+Diaphragm+Terminal+Voice Coil
  • GD7450
    Nominal Impedance: 8 Ω
    Diaphragm Material: Titanium
    Voice Coil ⌀ : 2.93 inch / 74.5mm
    Voice Coil Material : Round Al Wire
    Frame+Diaphragm+ erminal+Voice Coil
  • GD2540P
    Nominal Impedance: 8 Ω
    Diaphragm Material:  Polyimide Plastic
    Voice Coil ⌀ : 1 inch / 25.4 mm
    Voice Coil Material: Round Al Wire
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-2408J
    Nominal Impedance: 8 Ω
    Diaphragm Material: Phenolic
    Voice Coil ⌀ : 1.5 inch / 38 mm
    Voice Coil Material : CCAW
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-100PH
    Nominal Impedance: 8 Ω
    Diaphragm Material: Phenolic
    Voice Coil ⌀ : 4 inch / 100 mm
    Voice Coil Material : CCAW
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-100-SLER
    Nominal Impedance: 8 Ω
    Diaphragm Material: Titanium
    Voice Coil ⌀ : 4 inch / 99.2 mm
    Voice Coil Material : CCAR/CCAW/ALR/SV
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-7220-BL
    Nominal Impedance: 8 Ω
    Diaphragm Material: Titanium
    Voice Coil ⌀ : 2.84 inch / 72.2 mm
    Voice Coil Material :  Round Al Wire
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-7220-BLX
    Nominal Impedance: 8 Ω
    Diaphragm Material: Titanium
    Voice Coil ⌀ : 2.84 inch / 72.2 mm
    Voice Coil Material :  CCAR/CCAW/ALR/SV
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-5160
    Nominal Impedance: 8 Ω
    Diaphragm Material: Titanium
    Voice Coil ⌀ : 2.03 inch / 51.6 mm
    Voice Coil Material : Round Al Wire
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-7450-GL
    Nominal Impedance: 8 Ω
    Diaphragm Material: Titanium/Composite
    Voice Coil ⌀ : 2.93 inch / 74.5 mm
    Voice Coil Material :  CCAR
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-7450-SL
    Nominal Impedance: 8 Ω
    Diaphragm Material: Titanium/Composite
    Voice Coil ⌀ : 2.93 inch / 74.5 mm
    Voice Coil Material : CCAR
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-4440-BR
    Nominal Impedance: 8 Ω
    Diaphragm Material:  Polymer
    Voice Coil ⌀ : 1.75 inch / 44.5 mm
    Voice Coil Material : CCAR
    Frame+Diaphragm+Terminal+Voice Coil
  • GD-3440
    Nominal Impedance: 8 Ω
    Diaphragm Material:  Titanium 
    Voice Coil ⌀ : 1.35 inch / 34.4 mm
    Voice Coil Material : Round Al Wire 
    Frame+Diaphragm+Terminal+Voice Coil

Ningbo BTL Audio

We are a producer maintaining production bases in Ningbo and Guangzhou, designs and manufactures high-quality PA loudspeakers.
We integrate forward-thinking design, stringent materials, precision testing, and automated production with skilled assembly to guarantee exceptional quality and reliability.
Trusted by top audio brands, we deliver field-proven driver solutions. This enables our clients to save time on sourcing and testing, capture market trends faster, and minimize post-sale issues.
Ultimately, we help partners, ensure superior quality, boost brand image, stand out, and build enduring brand reputations beyond short-term gains.

Contact Us

    +86-13456142388 / +86-15957486002
    13456142388 / 15957486002
   jackie.shen@btlaudio.com  / cicy.shi@btlaudio.com
   42 West of Shimi Road, Guanhaiwei Town, Cixi City, Zhejiang Province, China
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