Summary
- A Line Output Converter (LOC) tin importantly amended your car audio system.
- Look for progressive LOCs with adjustable output, auto-turn-on feature, and built-in awesome summing.
- While a Digital Signal Processor (DSP) offers precocious tuning, starting with a LOC is recommended for a basal upgrade.
If you’ve ever thought astir upgrading your car audio but felt overwhelmed by each the options (or disquieted astir the cost), the bully quality is that you don’t person to regenerate everything to get a earnestly noticeable upgrade.
In fact, if you're looking for the biggest bang for your buck, there's 1 upgrade that stands supra the rest.
A Line Output Converter Is That Upgrade
If you're superior astir making your car audio dependable better, the archetypal happening you should drawback isn’t a caller caput portion oregon adjacent caller speakers. What you truly privation to get your hands connected is simply a enactment output converter, oregon LOC for short.
The crushed is that astir mill radios are built to dependable conscionable okay—good capable to support the mean commuter from complaining, but obscurity adjacent what you'd privation if you really attraction astir however your euphony hits. They usually propulsion retired a speaker-level awesome that’s good for banal speakers, but the infinitesimal you privation to upgrade to an aftermarket amplifier oregon amended speakers, that mill awesome becomes a large bottleneck.
A LOC steps successful and fixes that by taking the high-level (speaker) awesome and converting it into a clean, low-level (RCA) awesome that your caller cogwheel tin really enactment with. What’s adjacent amended is that a prime LOC tin sphere your mill caput unit, which is immense if you don’t consciousness similar wrestling with dashboard panels, weird mill wiring, oregon losing built-in features similar steering instrumentality controls oregon backup cameras.
What to Look for successful a Good Line Output Converter
The archetypal happening to look for is an progressive LOC, not a passive one. Passive LOCS technically work, but they're anemic and simply dull the awesome without immoderate existent finesse. Active LOCs, connected the different hand, really buffer the awesome (sometimes amplifying it slightly), cleanable it up, and person it, giving your amp thing beardown and cleanable to enactment with. Another happening you’ll decidedly privation is adjustable output. Some mill systems, particularly those with built-in amplifiers, output precocious voltages—up to 40 volts successful immoderate cases. If your LOC can’t grip that, you’ll get distortion oregon adjacent harm your gear.
You besides privation to get an LOC with an auto-turn-on feature, truthful it tin observe erstwhile the vigor powers up and automatically crook your amplifier connected and off. Otherwise, you’ll person to ligament up a abstracted distant turn-on lead, and unless you truly bask chasing ignition sources done your fuse box, it’s mode easier to fto the LOC grip it.
If you privation to get a small fancy, look for a exemplary with built-in awesome summing arsenic well. Some mill systems similar to get each artsy and divided the audio crossed antithetic speakers—bass implicit here, mids implicit there, highs determination else. If you conscionable pat into 1 of those, you volition lone beryllium getting a portion of the euphony pie. A bully LOC tin drawback each those scattered signals and stitch them backmost unneurotic into the full, glorious range.
Last but decidedly not least, don’t inexpensive retired connected physique quality. Your LOC is going to unrecorded successful the unsmooth and tumble situation of your car, with tons of vigor cycling, vibration, and occasional moisture. Flimsy integrative housings and sketchy solder joints conscionable aren’t going to past long. If you privation bully recommendations, you tin cheque retired the AudioControl LC2i (or the LC2i Pro if you're consenting to walk much bucks), Wavtech link2, and Kicker KEYLOC.

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Installing the Line Output Converter
Setting up the LOC isn't the astir daunting task if you person immoderate DIY chops. The process involves tapping into your caput unit’s talker wires, connecting the LOC, and moving RCA cables to your amplifier. If you’re useful with a multimeter and comfy moving with car electronics, you mightiness beryllium capable to tackle this yourself. You’ll request tools similar ligament cutters, electrical tape, and perchance a soldering robust for unafraid connections, though immoderate radical usage T-taps oregon Posi-taps for quicker installs. Soldering is inactive the golden modular if you privation the strongest and astir durable connection, particularly successful a car wherever everything vibrates.
However, I’d powerfully urge nonrecreational installation, particularly if your car has a analyzable audio system, oregon you’re adding aggregate components. A pro tin guarantee due wiring, minimize sound issues similar crushed loops, and tune the strategy for optimal sound. Plus, they’ll prevention you the headache of troubleshooting if thing goes wrong.
LOC vs DSP: What's the Difference?
Since I’ve been talking astir the capabilities of a enactment output converter (LOC), it’s earthy to wonderment however that compares to thing other you mightiness person heard about: a DSP, oregon digital awesome processor.
Think of a DSP arsenic a full-blown exertion that takes what’s already being said and makes it dependable 10 times better. A DSP lets you tweak your audio successful ways your mill strategy ne'er dreamed of: mounting customized EQ curves, adjusting the timing truthful each the sounds scope your ears perfectly, balancing antithetic speakers, and adjacent smoothing retired the unsmooth patches successful a car’s weird acoustic environment. It’s the instrumentality you usage erstwhile you already person a bully foundation, and you privation to fine-tune it into thing genuinely amazing.
When I archetypal started with my upgrade journey, I focused connected the LOC due to the fact that there’s nary constituent successful obsessing implicit fine-tuning if the basal awesome isn’t adjacent getting wherever it needs to go. If you’re stuck betwixt the 2 and inactive rocking a mill caput unit, the LOC is the no-brainer starting point. You tin ever adhd a DSP aboriginal erstwhile everything other is dialed in—and erstwhile you do, you’ll beryllium mounting yourself up for a strategy that doesn’t conscionable dependable louder, but considerably better.

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Of course, the terms tag tells the story, too. A decent LOC volition acceptable you backmost possibly $50 to $150. However, with a bully DSP, you’re looking much similar $300 to $800—and that’s earlier installation if you’re not handy. Is it worthy it? Depends connected what you're chasing. If you’re conscionable trying to adhd an amp and sub without tearing isolated your dashboard, a LOC is perfect. But if you’re chasing that crystal-clear, audiophile-level sound, and you’re chill with either spending immoderate superior clip tweaking settings (or paying a pro who knows their stuff), a DSP is wherever the existent magic happens.
And hey, if you privation the champion of some worlds, immoderate newer gadgets are pulling treble duty. They’ll instrumentality your speaker-level signals, person them, and springiness you DSP tweaking powers. Look up the JL Audio TwK-88 oregon the AudioControl DM-810 if you're looking for recommendations. They’re decidedly not cheap, but they bash a spot of everything, and they bash it well.