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Rockford Fosgate RF-HLC4

4-channel line output converter

Item # 575RFHLC4

Bryan
Need help?
Contact our Virginia-based experts.

Item # 575RFHLC4

In stock
$50.99
Bryan
Need help?
Contact our Virginia-based experts.

About the Rockford Fosgate RF-HLC4

Small enough to fit behind your dash and never needs adjusting

When you want to add an amplifier to a car stereo that doesn't have RCA-type outputs, Rockford Fosgate's HLC4 4-channel line output converter may be the perfect solution. The HLC4 converts the high-level signal from your receiver's speaker-level outputs down to low-level signals that your amp can handle. This compact converter will fit just about anywhere.

Product highlights:

  • 4-channel line output converter
  • input: up to 10.5-volt (about 27 watts)
  • output: up to 3 volts
  • includes ground leads to reduce noise if necessary
  • dimensions: 4-15/16"W x 1-1/16"H x 3-1/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # RF-HLC4

What's in the box:

  • 4-Channel high-level to low-level signal converter
  • 12" Speaker-level harness
  • Instructions on packaging

Customer reviews

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Rockford Fosgate RF-HLC4 reviews

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Crutchfield response

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More details on the Rockford Fosgate RF-HLC4

Stacey B.

Product Research

Features

4-Channel High-Level to Low-Level Converter: The Rockford Fosgate RF-HLC4 is a 4-channel high-level to low-level signal converter designed for factory or aftermarket radios that do not have dedicated low-level RCA outputs. The adapter converts high-level signal from the radio's speaker line and transforms it into a safer low-level audio signal. This allows you to add a 4-channel amplifier to your system for higher power output and better sound quality.

Speaker Level Input: The Rockford Fosgate RF-HLC4 comes with a 10-wire speaker-level harness which plugs into the converter's 10-pin connector. The speaker-level harness will need to be spliced or crimped onto your head unit's wiring harness (splicing and crimping accessories sold separately). The RF-HLC4 has an input voltage of up to 10.5V.

Pin # Wire Color Function
1 Green/black LR-
2 Green LR+
3 Brown Not Used
4 Gray RF+
5 Gray/black RF-
6 Purple/black RR-
7 Purple RR+
8 Brown Not Used
9 White LF+
10 White/black LF-
Note:Connecting the Ground leads (brown) is not necessary unless there is noise in the audio system.

Low Level Output: The Rockford Fosgate RF-HLC4 is fitted with 4 RCA jacks (Front Left/Right, Rear Left/Right). These RCA jacks connect to your aftermarket amplifier via stereo RCA cables (sold separately). The RF-HLC4 has an output voltage of up to 3V.

Mounting Options: The 4-channel high-level to low-level signal converter should be installed behind the vehicle's dash and car stereo.

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Customer Q&A

10 questions already asked

Q
If i buy a powered sub and an RCA adapter for my factory stereo, how do I wire the output to go on my factory speaker? do I need to bypass the wires from the sub or from the RCA adapter? I understand that the adapter will give the sound to the sub but how it will go to the speakers if the cables are not directly connected to the radio? sorry for bad english im french haha
[ Shan  Jul 09, 2021 ]
1 answer
A
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
[ Calvin  Jul 12, 2021 ]  Staff
Q
I have a four channel amp and the line output converter I have right now isnâ??t giving a high frequency to my app my subs are working but my PA horn isnâ??t well this line converter help?
[ Chance  Feb 17, 2021 ]
1 answer
A
We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
[ Calvin  Mar 04, 2021 ]  Staff
Q
I have a four channel amp and the line output converter I have right now isnâ??t giving a high frequency to my amp my subs are working but my PA horn isnâ??t well this line converter help?
[ Chance  Feb 17, 2021 ]
1 answer
A
EntHy Friend I usued it to convert my OEM head unit on my 2006 honda, to RCA cables , to coneect a 5 channel amp. It work very well. Tks Samuel er an answer to this question.
[ Samuel  Feb 20, 2021 ]
Q
Is this just for subs im looking to add an actual amp in my car to get more out of my speakers?
[ Cattaru  Dec 14, 2020 ]
4 answers
A
This is a 4 channel line output converter that will allow you to hook up a full range amp and/or a mono subwoofer amp to your factory system. The HLC4 converts the high-level signal from your receiver's speaker-level outputs down to low-level signals that your amp can handle. You could hook up a 2 channel full range amp and a mono amp to this at once since it has 4 preamp outputs. You can also hook up just a 4 channel amp to this as well.
[ Allison  Dec 30, 2020 ]  Staff
A
It can be either. This will give you more and then some.
[ William  Dec 29, 2020 ]
A
Hi Cattaru. The RF-HLC4 is a speaker level converter. It takes the speaker level outputs from the back of your receiver, and converts them the LINE levels that your amplifiers can use. Some amplifiers are able to accept speaker level inputs. You can plug a set of RCA's in and hook the other end to your amp. There are 4 channels on this converter LF, RF, LR, and RR. These coincide with the speaker level wires. If you are looking to get more out of your speakers this will absolutely work for you. Before purchasing decide on an amplifier. The amp you pick MAY accept speaker level inputs. Good Luck.
[ Antone  Dec 29, 2020 ]
A
It's line output converter I've got a sub amp and highs mid amp on it.
[ Jamey  Dec 29, 2020 ]
Q
can i run the converter from the rear leads of the head unit?
[ brock t  Mar 20, 2020 ]
2 answers
A
Yes you can. Ask crutch field for a color coded chart for your specific vehicle. Best option.
[ Teudy  Apr 04, 2020 ]
A
Yes you can, just remember you need to have your rca's run back to your amp If your installing one.
[ Hector Luis  Mar 20, 2020 ]
Q
Does this correct bass roll off?
[ Artifice  Sep 11, 2017 ]
1 answer
A
It does not, no. It just provides the high level to low level conversion.
[ Ryan  Sep 13, 2017 ]  Staff
Q
I want to hook up 1800 watt amp and 2 12inchsubs in a box what converter do i need?
[ candy isaacks  Feb 25, 2014 ]
1 answer
A
For details on installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to give you the details on what you will need.
[ Krissy  Feb 26, 2014 ]  Staff
Q
Does this converter has a Remote wire for your amps to turn off/on ? And can I used it for two amplifiers ??
[ Frank  Jan 14, 2014 ]
1 answer
A
No, the amp switch wire would not run through the converter. The switch wire(s) should be spliced directly to the switched 12v on the head unit. Using this for two amplifiers completely depends on your setup, and whether you want to amplify front and rear channels separately. Using a four channel amplifier combined with a separate mono amp for the sub? You can use this with two RCA "y" splitters put on either the front or rear channels. Two mono amps? Don't use this. Buy a two channel converter instead and split the signal on the RCA side.
[ Ryan  Jan 14, 2014 ]
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