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Rockford Fosgate RF-BLD

2-Channel Balanced Line Driver

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List price $129.99

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$74.99

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General Features:
  • 2-Channel Balanced Line Driver
  • Balanced/Unbalanced mode allows the output signal to properly match amplifier input
  • Differential inputs eliminate noise picked up by signal cables
  • Low output impedance drives a noise free signal to an amplifier(s)
  • High voltage line driver
  • Output level indicators
  • Speaker level to RCA line level converter
  • Low distortion, low noise operation
  • Dimensions: 4-1/8"D x 5-15/16"W x 1-5/16"H
  • 1-year SonicElectronix.com warranty
Specifications:
  • Operating Voltage: 9-16 VDC
  • Frequency Response: 20-50,000Hz 1dB
  • Impedance:
    • Input: 20k Ohms
    • Output: 55 Ohms
  • Input Voltage: 650mV to 10.5V RMS
  • Signal Input:
    • High-level: 2-channel (left/right)
    • Low-level: 2 RCA (left/right)
  • Signal Output: Low Level 2 RCA (left/right)
  • Output Voltage:
    • Unbalanced: 11 Vrms
    • Balanced: 22 Vrms
  • Gain: +0.8dB to +24dB
  • Signal-to-Noise:
    • ≥ 90dB @ 2V ("A" Weighted)
    • ≥ 110dB @ 10V ("A" Weighted)
  • Mounting: install as close to source unit as possible

Line Driver Specifications

Max Output Level
The maximum level (in volts) of signal output. A higher level will increase the clarity and boost your signal.
22 volts
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Total Number of Inputs
This is the total number of input connections that go into the unit.
Total Number of Outputs
This is the total number of output connections that the unit will produce.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 50,000 Hz
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
0.01%
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
110 dB
Width
The width of the item from left to right (side-to-side) measured in inches.
5-15/16"
Height
The height of the item, measured from top to bottom, in inches.
1-5/16"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
4-1/8"

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
67%
4 Star
33%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.4
Value
4.6
Features
4.6
Design
4.6
Usability
5.0
John

NorCal

Overall
Durability
Value
Features
Design
Usability
Mid Grade Line Driver

September 17, 2014

The RF-BLD falls in the middle of the price/function range. I found it to be low noise and easy to install. It is not the same league as the Tru unit. The case mounts/endcaps could be of better quality. The leds are very bright and the layout is ok. This is not a bad unit for the $$$.

0 of 0 found this helpful

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George

pomona, CA

Overall
Durability
Value
Features
Design
Usability
Great product

February 27, 2014

Good product only downside is the price other than that it does what it says at 5volts preout.

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twisted1

Morganza, LA

Overall
Durability
Value
Features
Design
Usability
this is what ive been missing

September 27, 2013

if your running couple amps then this is the product for you!
Before I installed my line driver i was having to crank gains up pretty high and then that was causing some unwanted noise in my system. Not a lot of people believe we need line drivers but i wont own another system without it!
I'm running 4 amps off pioneer 4300dvd player an when I tune with dd1 and the line driver it gave me a louder cleaner sound to my subs then ever before!

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Stick

Pittsburgh, PA

Overall
Durability
Value
Features
Design
Usability
solid unit

August 9, 2013

extremely quiet and very powerful. I wouldn't expect anything less from RF!

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brian

Auburn, AL

Overall
Durability
Value
Features
Design
Usability
Works great as a line converter

January 2, 2013

Im using this for a hi/low line converter for a factory stereo. Wayyy better than a cheap one with a step down process. One of my best recommended products for a factory system add on.

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wes

fort worth, tx

Overall
Durability
Value
Features
Design
Usability
AWESOME a must have for high level inputs

August 21, 2012

I added this because I was getting some whine in my car stereo. I had hooked up my premium audio system to my amp using high level inputs. when I added this line driver, it completely and I am not joking completely killed all the interference noise. Now it sounds very close to an aftermarket HU in terms of quality and hits like a champion which it did before.

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Travis McClellan

Mount Carmel

Overall
Durability
Value
Features
Design
Usability
Great product

April 1, 2012

If you want to get the most out of your amp. The signal going in is important to help your amp seem to produce more power out. This product well help you produce and maintain proper input voltage. You will see a crazy increase in sound because of this. Your amp isn't producing more power but it seems so because of proper input voltage. Couple that with extremely easy installation and I highly recommend this product. It is as advertised!!!

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DJ

Wailuku, HI

Overall
Durability
Value
Features
Design
Usability
Another great product from Rockford Fosgate!

March 12, 2012

This product says what it does and then some. System sounded a lot cleaner. It was simple to install, real self explanatory. I would purchase RF-BLD again.

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Eddison

coral springs, FL

Overall
Durability
Value
Features
Design
Usability
great unit

December 10, 2010

this is the unit if you want to keep your head unit. I hooked it up in my Tacoma made the necessary gain adjustments and my systems sounds great

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Browse 2 questions and 4 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
good review
ROMEL P on Sep 7, 2014
inline amp istallation
Alan G on Aug 25, 2014
Can this line driver actually take unbalanced signal from consumer devices like phones, mp3 players, computers and convert it to balanced differential for amplifiers that take balanced differential output?
A shopper on Oct 3, 2014
Best Answer: This device will accept speaker level input and convert it to line level output. Essentially taking a really hot signal in terms of volts, and making it a not so hot signal. The output from your phones 3.5mm jack is speaker level, and it does have left and right channels- so it would convert it into a balanced line level signal just as long as its hooked up right.
Reply · Report · Jonny D on Oct 3, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

RF-BLD

UPC

780687328696

Weight

1.00lb

Internal SKU

rfbld

Internal Product ID

22635

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate RF-BLD