Question about iLO XM-MP3-CD Car Stereo

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Wiring I have a 4 channel Alpine amp that I have to send back for repair. It was running a set of component speakers (6 1/2" and 1") and a pair of 4x6 plate speakers. Meanwhile so I have tunes I installed an MTX 2 channel amp and ran the speakers parallel. From what I understand this makes it a 2ohm load which the amp is capable of handling. Is this correct? When I first hooked it up I got a noise from the rears even when the deck and amp were turned off. It increased and decreased when I pressed and released the gas pedal. Seems to have gone away now. Any ideas or suggestions? Thanks

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Re: wiring

If you get a buzz or whine noise that changes on acceleration of the engine,,, for some reason your amp is picking up alternator "noise" the most common cause of this is a corroded/dirty/non bare metal/poor ground connection to the cars chassis form your amp.. recheck your connections and make sure! Another trick is to run the rca cables on the opposite side of the car as the power wire. Also if your rcas have a small wire in the center DO NOT USE IT FOR A REMOTE WIRE!!! it is meant to be grounded on both ends to eliminate noise. Also p.a.c.(pacific accessory corporation) makes a noise filter you can put inline betwen your rca cables and the amp. I have had some sccess with that..

Posted on Aug 22, 2007

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1) Understand the basics of all car stereo systems. A car stereo system consists of 4 main components and the wiring that connects them. These are the head unit, the main speakers, optional amplifiers and the subwoofers, which are also optional but generally considered a necessary part of any good system. 2) Know that the core of any car stereo is the head unit, which is the cassette or CD player that goes in the dash. All the other components are connected to the head unit by at least one pair of wires. 3) Know about car speakers. The main speakers are usually 2 in the front and 2 in the back, although with what are known as component speakers, each speaker is broken down into two speakers: one for the highs and one for the bass. Each speaker or speaker set (known as a channel) connects to the head unit via a pair of wires. Generally if you are installing a new head unit you want to install new speakers. 4) Know about amplifiers. Amplifiers provide extra power to your speakers and/or extra channels of power for additional speakers. The most common use for an amplifier (amp) is to power subwoofers. The amp connects to your head unit via an RCA cable and often a "remote on" wire, and also connects directly to your car battery through a fused "hot" wire and to the car's chassis with a short ground wire. This article assumes the use of a single amplifier connected to a pair of subwoofers. If you do not have these components simply ignore the steps specific to the amp, doing so will not affect the rest of your installation. 5) Know about subwoofers. Subwoofers are part of any good stereo system. They provide the deep bass that small speakers cannot achieve. Subwoofers are connected to the amplifier which can usually be mounted right to the subwoofer box. If you do not have subwoofers you can simply ignore the steps specific to them. FOR more help click on this link directly ------ This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

Jan 25, 2010 | Car Audio Receivers

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I bought a used puch 400.4 for my 1999 dodge durango and plan to use the factory stereo, however ther are no hook ups for rca cables. i heard about line level converters but on the punch 400.4 there are...

Hello riggstr44,

The "pass-through" jacks are outputs that allow you to send the same input to another amp.

Each set of the remaining RCA's handles a pair of channels (2 speakers).

You want a 4-channel LOC like the one shown here:

Connect the speaker wires from the factory receiver to the input screw terminals (marked A1 through A8) and run 2 pairs of RCA cables to the 2 sets of inputs on the 400.4.

Hope this helps.

Aug 22, 2009 | Rockford Fosgate Car Audio Receivers

1 Answer

Volume issue with Alpine CDA-7839 and Soundstream Continuum

Interesting that you have a Soundstream "The Continuum" amplifier. This is limited edition of the Reference 705 amp produced with a polished aluminum (not chrome) case. You have a very hi quality - Old School - amp.

Properly installed this amp should produce more than ample volume levels and certainly far more than a stock unit.

Because the Alpine head unit provides sufficient voltage to drive the amp, it is likely either the wiring, or, the way you have it set up.
The amp has a large internal capacitor bank and for proper operation, this amp must be connected directly to your car battery, prefereably with 4 AWG. (The amp is made with 4 AWG power connections.) Use high quality speaker wire run directly from each speaker to the amp.

If you have done the above, then it is probably the way you have it set up. The amp is sophisticated with many configuration options. Do not change any switch settings while the amp is playing. Ensure you have the appropriate inputs and crossover selected. Check the gain settings.

Jul 12, 2009 | Alpine Car Audio Receivers

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Some decks only give one pair of pre outs. Most 4 channel amps can use just a 2 channel input and feed the other 2 channels by the flip of an input selection switch. I recomend a 4 channel amp if you want to power front and rear speakers and be able to set the gains to blend properly, or you can run all 4 speakers at a 2 ohm stereo on 2 channels and run a sub on the remaining r channels. It just depends on how you want the setup to be nd to how much control you want. Let me know.

Larry T
Winona Lake, IN

Jan 22, 2009 | Kenwood KDC-215S CD Player

2 Answers

Alpine cde 9852

In actuality the resistance of the speaker depends on the frequency the speaker is playing. For example, a speaker may have a 3 ohm resistance at 80 Hz and a 9 ohm resistance at 300 Hz. If you were to make a plot of resistance versus frequency you would get what is called the impedance curve of the speaker. Also, speakers act in some ways as inductors and capacitors so a true model of a speaker must include those components as well. How does this affect the sound you ask? Well if you have an amp that has very weak current capability it may work fine into perfect 4 ohm loads but when you connect our real speaker which has an impedance dip at 80 Hz the amp may have difficulty and smear sounds that have 80 Hz components. These are minor but audible effects. This is why it is good to get a 2 ohm stable amp even if you never plan on running 2 ohm loads.

Mar 03, 2008 | Alpine CDE-9852 CD Player

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Wire diagram

guynoir..with alpine your other set of speakers would most likely run through an amp ,which may connect up by the rca leads or a din plug , this is where your fader comes in to play.i was an agent for alpine

Feb 07, 2008 | Car Audio Receivers

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How to wire a stereo system

Connect the 2 gage to the battery thru at least s 50 amp fuse, then connect the capacitor in line before the amps. Then run the 2 gage to a connector/splitter block and run 4 gage leads to each amp. You also will need at least 4 gage ground leads from each amp to a body grounded bolt or screw. You need to run a quality set of speaker leads from the head unit to the amps. The speakers will need separate leads from the amp to each speaker.You will need to try some different combinations to get the sound and bass you want. You want to be able to fade from front to rear and control everything thru the head unit.
Use a hole saw to cut a 2 to 3 inch diameter hole in the side of the speaker box for a port to get a better punch from the sub.
Hope this helps some....

Nov 03, 2007 | Alpine CDA-7863 CD Player

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No sound to the in car speakers from my alpine cda-9827 cd player

What kind of car did you install this in? Did it have a factory radio in it? If I had to take a guess I would think that there is a factory amp that you may have hooked the blue wire from the alpine deck to. If this is the case when you switch to CD the alpine deck turns off the power to the power antenna lead(blue wire) and thus your factory amp. If this is the case hook the factory amp turn on to the blue and white wire and you should be good to go.

Sep 02, 2007 | Alpine CDA-9827 CD Player

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Make certain that each ouput channel from the unit is driving no more that 4 ohms each. If you have more than one speaker attached to an output then be sure they are wired in series NOT parallel. Two 4 ohm speakers in series is an 8 ohm load and the same two speakers in parallel is a 2 ohm load. If the speakers are dual voice coils then you must treat each voice coil as if it were another speaker when it comes to wiring.

Aug 16, 2007 | iLO XM-MP3-CD Car Stereo

1 Answer

Alpine cda-7892 Head unit overheating

Certainly, the output IC might need to be replaced, also check to see if there is a factory amp somewhere in the car. Additionally, double-checking the wiring is a must. How long does it take for the unit to heat up?

Mar 28, 2006 | Alpine CDA-7892 CD Player

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