




Focal Inside 2.1 IMP Harness for Impulse 4.320 4 Channel Amplifier & PSB200 Sub
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The Focal Inside 2.1 IMP Harness is a 1m plug-and-play wiring loom that connects the Focal Impulse 4.320 4-channel amplifier to front speakers on two channels and one PSB200 subwoofer on the remaining two channels — no cutting or splicing required. It is part of the Focal Inside vehicle-specific upgrade system.
For a pair of ISUB Twin subwoofers instead, see the Focal Inside 2.2 IMP Harness.
Key specifications
- Type: amplifier harness, Focal Inside
- Compatible amplifier: Focal Impulse 4.320 4-channel amplifier
- Configuration: 2 channels front speakers, 2 channels to one PSB200 subwoofer
- Cable length: 1m
- Cable construction: twisted to eliminate interference
- Connectors: specific plug-and-play connectors, no soldering required
Connects Impulse 4.320 front speakers plus PSB200 sub
A dedicated wiring harness connecting front speakers and a PSB200 subwoofer to the Focal Impulse 4.320 amplifier with no cutting or splicing.
- Uses two channels of the Impulse 4.320 to drive front speakers
- Uses the remaining two channels to power one PSB200 subwoofer
- Designed specifically for the Focal Inside upgrade system
Inside upgrade harness
- Plug-and-play connection cables for the Focal Impulse 4.320 compact 4-channel digital amplifier
- Engineered to work within Focal Inside vehicle-specific fitment kits
- If you need to extend the amplifier's input/output reach, see the Focal Inside IMP Extension Cable I/O 150
- Check vehicle compatibility via the Focal Inside website or contact us before purchasing
Explore the full range in Focal Wiring Looms.
Specification
| Length | 1m (3.3ft) |
|---|---|
More specs
| |
What's Included
- Focal 2.1 IMP Harness
Focal
About the Focal IW-IMP-2.1
From our tech experts at CEN
The Focal Inside 2.1 IMP Harness is a 1m plug-and-play wiring loom for the Focal Impulse 4.320 4-channel amplifier. It routes two channels to front speakers and the remaining two to a single PSB200 subwoofer, using specific connectors that require no cutting, splicing or soldering. It is part of the Focal Inside vehicle-specific upgrade system.
Who it suits
This harness suits anyone building a Focal Inside system around the Impulse 4.320 with one PSB200 subwoofer. If you need to run twin ISUB subwoofers instead, you will need the 2.2 IMP Harness rather than this one.
Our tech experts advise
The cable is 1m long, so check that it reaches between the amplifier and your speaker and subwoofer connection points before ordering. This harness is compatible only with the Focal Impulse 4.320 and will not work with other amplifiers. Twisted cable construction is built in to reduce interference. Always verify vehicle compatibility via the Focal Inside website before purchasing, and note that installation is priced per vehicle; see our car audio installation page for details.
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Frequently Asked Questions
Q: What does the Focal 2.1 IMP Harness connect?
A: It connects the Focal Impulse 4.320 amplifier so that two channels drive the front speakers and the remaining two channels power one Focal PSB200 subwoofer.
Q: Do I need to solder or cut wires to use the 2.1 IMP Harness?
A: No. It uses specific plug-in connectors, so no soldering is required.
Q: Which amplifier is the 2.1 IMP Harness for?
A: It is designed for the Focal Impulse 4.320 compact 4-channel digital amplifier.















































