The Blackspider MFN425SE is a compact 4″ trade speaker suited for custom car audio installs. With a nominal impedance of 4 Ω and rated for 20 W, it works well in tight spaces or as fill/auxiliary speakers.
As a “loose” trade speaker (i.e. no mounting grill included), it lets installers choose their own enclosure or mesh cover. Blackspider positions it as a budget-friendly, versatile solution in their trade line.
- Compact 4″ diameter for tight-fit applications
- Rated 20 W power handling at 4 Ω
- Loose speaker (no grill) allows custom mounting solutions
- Suitable for installations where space is limited or for supplementary/fill use
- Blackspider trade-line quality at entry-level pricing
- Power should not exceed rated limits (20 W) to avoid damage
- Ensure polarity is correct to avoid phase issues
- Mounting surfaces should be rigid and free of vibration
- Do not expose to moisture or direct water spray
- Avoid heat sources or metal contact with magnet structure
This speaker is “universal” in nature — usable in custom car, motorcycle, or marine (dry) applications where a 4″ speaker is required. Verify mounting dimensions, depth, and required sound pressure before fitment.