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Question
I'm installing a Alpine CDA9855 in my truck. The unit powers up fine and I have all functions and control but no sound at any of the speakers.
I tested the output directly from the unit to one of the speakers with a test wire and it works fine.
I've read that their is a "Factory Amplifier" installed and I see a fuse for it in the fuse box and it is good.
Where is this Amplifier and is their a way to test or reset it?
I also tested continuity between the speakers and the wires at the audio plug and do not have continuity.

Answer
Hi Rob.
The amp is mounted behind the dash above the glove box with three 10mm bolts.
You will need to remove the dash radio bezel and ash tray to get at this.  Expect about 1 hour if all goes well just to get at the amp.
Testing it yourself it is unlikely (if you had to ask). :/
I do not know if there is any type of reset button on it but experience tells me that there is not a reset function.

You could just hook the speaker wires (at the amp outputs) on up to the input speaker wires (by-passing the Infinity amp) since the Alpine has 18 watts x4 to use.
Just be sure to observe proper polarity then cap off any power wires and remove the amp fuse.
***If you are NOT comfy doing these mods hire a professional to do it for you as NO ONE WANTS THEIR VEHICLE BURNED TO THE GROUND AND I WILL NOT BE HELD LIABLE IF YOU DO BURN IT TO THE GROUND.

If you want to retain use of the amplifier I would contact Crutchfield anytime you want advice on retaining factory options.
1.800.555.7088


Regards,
JM  

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Jerry Mael

Expertise

My forte is audio.. Car/Home/Boat. You name it, I will help you even if it is just a link to more assistance. If you want to interface new gear to your factory radio I can do us both a favor and tell you to go to crutchfield.com or call them at 1.800.555.7088. They really are top notch at doing that for people with great support. I will re-direct most questions of that nature to them. The rest of it... I am eager to help you with. I am also not a 'Master Installation Technician' that will tell you I cannot assist you with cars not made in the USA. Talk to me about any audio upgrades including 'bang for the buck'.
Specialties include: Overall Acoustics, Gain structure/settings and Enclosure design, system design/consultation, when/where to get which upgrades as well as other pertinent info for the mobile audio enthusiast and much more.
I also am NOT interested in buying your used gear so do not waste our time asking me.

Experience

My specialty as it is offered here, is Mobile and Home Audio Consultation.
Eight years IASCA - Pro 251-500 watt class
With Allexperts since 1999 (on and off).
35 years of overall professional sound and acoustical/electronic experience (since 1977) including: Sound Offs, Home audio, Mobile audio, Live sound, Churches, Theater, Live DJ and Studio Recording (analog and digital software and hardware), Effects, Looping, analog/digital mutli-track and mixdown . My mother was a record producer so I picked up a lot of additional professional knowledge and experience through the years. I was a Drum Tech for the Banshee reunion tour and toured as sound man with a regional act called Champion so I have practical knowledge for many aspects of audio.

If I cannot directly answer your question I will use my vast resource network to help you get a usable answer.


Favorite Mobile components:
Any amplifier based on ZED principles. Examples are Diamond, Zapco, Hifonics, Autotek, ect. And of course, Nakamichi (yes, still in business)
McCaulley, Polk and Dynaudio Speakers.
Clarion/Nakamichi headunits and processors.


Education/Credentials
>35 years of real world, audio experience.

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