ROCKFORD RFK-HD14 Amp Installation Kit suitable for Harley-Davidson® 1998+
The RFK-HD14 is an aftermarket amplifier installation kit for the Power TM400X4ad amplifier and our aftermarket TMS series speakers on Harley-Davidson® model years 1998 to current. All new design features T-harness integration for fading front/rear capable systems (requires Rockford Fosgate flash.) Integrates aftermarket Rockford Fosgate amplifier into H-D® electrical system without modifications or cutting. You will need to flash your factory radio to use this kit. For aftermarket Rockford Fosgate systems only. Not for "Harley-Davidson® Audio Powered by Rockford Fosgate" factory systems.
This complete kit includes a heatsink, bracket, and wiring harnesses needed to install the Power Marine TM400X4ad amplifier on 2014 and newer model Harley-Davidson® motorcycles. Kit also includes Y-adaptors for adding lowers or Tour-Pak speakers, Boom!™ Audio bypass plugs for factory amplified systems, a DSR1 loop-thru harness, and all necessary hardware.
Requirements
This amplifier installation kit is designed to interface only with the below aftermarket amplifier, speakers and Harley-Davidson® motorcycle. If your existing amplifier, speakers and motorcycle are not listed below, it is not compatible.
Speaker:
TMS5
TMS65
TMS6RG
TMS6SG
TMS69
Amplifier:
TM400X4ad
*Please see Compatibility tab before purchasing.
Attention: On all Harley-Davidson® from 2014 onwards, the factory radio must be flashed before installing a maxxcount Sound Pack to prevent damage to the speakers!
Why do Harley-Davidson® from 2014 have to be flashed before an amplifier is retrofitted?
1. PROBLEM:
The 2014 Harley-Davidson® OEM factory radios use a "high fidelity" EQ curve that provides a powerful sound on low-power systems (the red curve in the picture below).
However, when retrofitted with an external amplifier, this curve over-amplifies bass and treble, causing significant distortion at higher levels and speaker damage.
2. SOLUTION:
Reset the factory EQ curve to a neutral (flat) EQ curve (see green line above) by "flashing" the Harley-Davidson® radio so that the downstream DSP or amplifier gets a neutral input signal and the connected speakers are not damaged.
This is the simplest and cheapest method to solve the problem. The "flash" method is also the acoustically optimal solution as it preserves signal integrity and thus provides maximum dynamic range and voltage potential from the source device for optimal sound quality.
Please do not use a line leveler to lower the EQ curve, as this will cut all frequencies sharply above 200Hz, thereby clipping a large part of the bass range!
3. How to flash the Harley-Davidson® Radios 2014+?
To flash the Harley-Davidson® radio you need special programming tools such as Diag4Bike or the kit from TechnoResearch.
However, if you own an older generation radio (all devices without touchscreen such as the 4.3" device with 11 buttons or the 6.5" GT radio with 4 buttons) and have always flirted with the latest Apple Carplay or Android Auto functions, you might consider a cutting-edge 7" touchscreen radio with all functions such as the SoundStream HDHU14+ (our item number: A22360) might be an option - it doesn't need to be flashed anymore ;-)
4. How to get the programming tools?
4.1. If you buy a BIKE kit from us, we will provide you with our TechnoResearch kit free of charge and on loan for 10 days at the installation date.
4.2. If you don't have the confidence to do this, you can of course ask the Harley-Davidson® specialist of your choice if he is able to flash the EQ of the radio.
4.3. If you have any questions about flashing, please contact us.
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