read here @Sneaky Pete
Part for aftermarket radio
Im installing a pioneer aftermarket radio into my R171. I called a place to get a quote on how much install would be and they mentioned I need a something about “fiber obtic” for the radio install. Im wondering what that is and where I could get it. Any links or brand recommendations would be great.
Attached below are the parts i bought. Let me know if I need anything else.
Thank you
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Attached below are the parts i bought. Let me know if I need anything else.
Thank you
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I don't know exactly. Something like "Premium Sound System" with an option code of 810 (at least here in Europe).
Anyway there would be the Harman/Kardon logo on the speaker grills. And because it is a separate amp there would be no speaker wiring on the HU,so your installer would immediately know.
No,let me clarify.
You say you have a HK amp. This amp is located in the passenger footwell. Speakers are wired to that amp in the footwell.
You now have 2 options.
Option 1:
Rewire the speakers to your new radio HU in the dashboard. Pro: simple straight forward setup. Con: possible worse soundquality (HK makes pretty good amps) and more work for your installer.
Option 2:
Use the RCA outputs of your new radio,connect them to a converterbox and connect that converterbox to the HK amp. That converterbox is the fiber optic thingy your installer mentions. Pro: probably better sound quality,allthough only stereo,no DTS or surround. Con:more complicated setup and an extra money for the converterbox.
For this option you need e.g. this device (the converterbox):
Fibre Optic Decoder | FOBB03
XTRONS Optical Fiber Decoder Box for Mercedes-Benz E / CLS / SLK / SL / CLK Series Only Decode Most Bus Based Systems •Description:*This adaptor is a plug-and-play adapter required in vehicles which have original COMAND APS NTG (Most Bus Based Systems) 2 or COMAND APS NTG 2.5 system, it provides...
xtrons.com
For completion:
Option 3:
Replace the HK amp with a new amplifier with DSP and equalizer stuff etc. But then you are talking major $$$$
Hope this clarifies things. If not,just ask.
And for the record I have no hands-on experience with the converterbox (I am an OEM guy
) but others may have. What I heard is that these Xtrons converters work pretty good.But if your installer suggests another converterbox I would follow his advice. Makes the discussion a lot easier if it does not work as expected.😉
Mwah, I would not worry to much about speaker impedance. It is no more than an average. Typical speaker impedance behaviour chart of a 6 ohm rated speaker :
It's all over the place.
Imho,use normal soundlevels and don't worry too much about impedance. You will probably hear distortion way before the amp gets into trouble.
Never looked at impedance specs in my high end home stereo setup.
HK speakers are a mix of 2 ohm and 4 ohm speakers.5 2 ohm speakers and 2 4 ohm speakers.
But you may disagree.
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