Just a subwoofer amp
If the factory system gives us a stable low-frequency signal with the bandwidth we need, a simple high-level connection or LOC may be enough.
KICKER • FACTORY RADIO • KEYLOC • KISLOAD • OEM INTEGRATION
Keeping the factory radio is fine. We just need to know what signal it is giving us.
If all you want is more bass, the integration may be simple. If the factory amplifier splits frequencies, changes EQ with volume or expects a specific speaker load, the plan changes fast.
We do not automatically throw a DSP at every factory system. We use the simplest integration method that actually solves the signal problem.
What are we trying to add?
KEYLOC
KEYLOC is useful when a compatible stereo speaker-level signal needs supported factory processing corrected before it feeds the aftermarket amplifier.
KISLOAD
KISLOAD provides a speaker-like electrical load when a factory output expects one. It does not create missing frequencies or flatten factory EQ.
Vehicle interface / full DSP
When the OEM system uses several split or heavily processed channels, a vehicle-specific interface, summing strategy or full DSP can be the cleaner route.
More amplifier power cannot restore a signal that is not there.
Factory systems can use EQ, bass roll-off, split bandwidth, delay, all-pass filters, load detection and dedicated factory amplifiers. That processing was built around the original speakers. Once the speakers and power change, we have to decide what needs to stay, what needs correction and what needs bypassing.
Real factory-retention proof from SMS.
2025 Ram RHO • factory Harman Kardon retained
The goal was more bass, not a new dashboard. The factory system stayed and the KICKER bass system was added around it.
OEM integration proof
Factory features can stay while the signal path and amplification behind them are upgraded correctly.
Factory source • aftermarket system
The source staying stock does not mean the rest of the system has to stay stock.
Tell us what you want to keep and what you want to improve.
Send the year, make, model, trim, factory audio package and whether you are adding bass, replacing speakers, adding power or building a full processed system.