Question about Pioneer DEH-P9800BT CD/MP3/WMA Player/Blue Tooth Enabled

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Alternor noise i have a pioneer deh-p9800bt hu which i have connect up to a rockford fostgate 4ch amp i have run the power wire down one side and the rcas and remote down the other side but when i turn it on i have a whinning noise. I have changed the hu and the problem has gone why do i only get it with the pioneer unit.

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Re: alternor noise

I had the same problem with my Pioneer Head Unit.

I changed the ground of the Head Unit and the AMP to the same location and that took care of the Alternator noise.

Best of Luck.

Posted on Nov 11, 2007

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How can i test my rca output jacks with a test light? pioneer deh p3100ub. hooked up spkr, nothing. tried one rca plug to white(lt) and then red(rt). Unit has 4 rca jacks, 2 for subwfr and 2 for front...

:) the rca jacks have to be connected to an amplifier,, their signal is too lay to even light a bulb.. you have to connect it to a car amplifier and then from the amplifier to the speakers..

Just so you'd know,, once your deck plays and you hear music on your speakers through your normal speaker wires,, RCA jacks work..

Ok you have 4 jacks,, 2 subs and 2 front.. These should connect to a preamp,, which takes 4 inputs and allows you to equalize or adjust how the music should sound,, now from the pre-amp,, it runs to an amplifier,, thats powers the subs and another that powers the speakers.. Some amps have 4 inputs so you can use one amp for your subs mids and heights..

for example a basic music system is

1 cd player
1 pre amp
1 amplifier (4 inputs, 4 channel out)

you bridge 1+2 and connect this to 1 12" double coil sub woofer

the next 2 connect to 2 mid speakers example "rockford or ev 5 / 8 " and 2 tweeters for heights..

Thats a kicking tricked out basic car audio system,,,

Hope that helps you understand how it works..

Mar 12, 2010 | Pioneer DEH P3100UB Car CD/ MP3 Player

3 Answers

I can't seem to get the get my pioneer deh-980bt to power on. i check wiring and still dont' power on.

check fuse at back of unit. also pull the plug out of the head unit & check for power at the pins in the plug that fits to the unit.

Aug 23, 2009 | Pioneer DEH-P980BT CD Player

1 Answer

How do i get radio station name instead of frequency numbers p9800bt stereo thanks

Here's a link to the manual, all you need will be in there.

Jun 12, 2009 | Pioneer DEH-P9800BT CD/MP3/WMA Player/Blue...

1 Answer

Feedback problems

hi there
that is a big system
well common problem with feedback is the power wires connected to amps and the RCA wires run from the pioneer unit to the amps are too close to each other if the power wire from the battery to the amps are run down (left) side of car make sure RCA and remote wire are run down the (right) side of the car if this is done like this than it could be the RCA cables you are using the other thing is if you rev the engine does it get louder if this is the case then the noise you hear is the alternator of your car to get rid of the feedback look at your amp power wire and load it with electrical tape or buy a piece of dynamat and place it around the amp power wire this will stop that...........if what i just said doesn't happen when you rev engine than ground each amp to its on metal frame (do not ground them together) this should also stop the feedback. make sure all RCA cables are no where near the amp power cable from your cars battery
hope i was able to help

Feb 28, 2009 | Pioneer DEH-P2900MP CD Receiver...

1 Answer


how did u pair/connect ur voyager to ur deh-p9800bt? i tried from the head unit and from the phone.. read both books.. just cant seem to figure it out.. can u email me what u did plz?

Dec 27, 2008 | Pioneer DEH-P9800BT CD/MP3/WMA Player/Blue...

1 Answer

Pioneer DEH-P9800BT with Nokia N95 8GB via Bluetooth

Sometimes the call is diverted to the phone, so the deck stops playing. Happens to me too

Jun 20, 2008 | Pioneer DEH-P9800BT CD/MP3/WMA Player/Blue...

2 Answers

Deh-p9800bt My screen is gone

I opened the radio and found that the wired ribbon that connect the front display plug to the inside main electronic board was cutted on the place that the ribbon bends when the face plate move in and out to take off the display or put a CD.(It sees like after years opening and closing ribbon makes an edge and break). I called Crutchfield and they brought this phone # for Pioneer replacement parts, Tel. 1-800-228-7221. I called and ordered the part (P/N:XNP7026, FACEPLATE RIBBON CABLE - $24.95) and I installed it, the decks is working perfect! If you have electronic working experience will be easy, if not, buy the part and bring it to an electronic shop. The front connector plug has to be reused. This cable is used on other models like : DEHP6800MP, DEHP7800MP, DEHP780MP, DEHP9800BT, and the DEH980BT. Hope that this help!
Jose Carrasquillo- Puerto Rico

Mar 19, 2008 | Pioneer DEH-P9800BT CD/MP3/WMA Player/Blue...

1 Answer

Battery drain and HU dangerously hot

I have the same problem with My HU of over heating especially during the hot days of summer. I am gonna try to install a pc fan(square one's)underneath the HU to cool it doqn a bit. Im also gonna run a power wire to the radio power wire so the fan turns on when i turn on the radio on. I want to see if the HU is still overheating. My HU overheats even when just sitting in the car.

Mar 02, 2008 | Pioneer Premier DEH-P960MP CD Player

1 Answer

Pioneer deh p9800bt

There is a yellow wire that needs to be connected to a constant +12 volt supply. This wire retains all of the pre-sets, settings, etc.

It sounds like it is not.

Check the connections with a volt meter with the vehicle off to verify it has constant +12 volts.

Best of Luck.

Nov 13, 2007 | Pioneer DEH-P9800BT CD/MP3/WMA Player/Blue...

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