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Is stereo phone speaker have amplifier - Cell Phones

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If your talking about only the speaker. no i doesn't have. its just the speaker.

Posted on Aug 01, 2009

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Posted on Jan 02, 2017

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Stereo only playbacks in mono. it used to play stereo


Stereo is actually two identical amplifiers which when the left and right of a stereo signal is fed into the respective inputs will reproduce the stereo sound through the left and right speakers.
Mostly there is a mono/stereo switch so if only a mono signal is available it is reproduced through both speakers.

You don't make it clear whether the playback is in mono or half a stereo?

If playback is in mono it will emerge from both speakers but the directional element will be absent. If the playback is in half a stereo the sound will emerge from one speaker only or mostly one speaker.

Most common problem is the failure of one of the amplifiers which could be electronic or the failure of any of the various switching usually used in such things.
The amplifiers can be tested by injecting a signal into each amplifier input and will be found satisfactory if the sound emerges from each speaker in turn at a similar volume.

Sep 01, 2017 | Audio Players & Recorders

1 Answer

No volume on all left side speakers


Determining the Cause of the Problem Let's assume our system has a head unit, a crossover, a two channel amplifier and two door speakers with only the right speaker working (the left speaker is not working). If the door speakers are behind the door panels then we want to make sure the speaker is the problem before removing the panel. We'll work backwards starting with the amplifier and ending at the head unit. Testing for a Speaker Problem With the vehicle and the stereo turned off disconnect the speaker wires for both the left and right speakers at the amplifier. Now connect the left speaker to the right amplifier output (which we know works). Turn on the stereo system and make sure the balance is set to the middle position.If the speaker still doesn't work then the problem is somewhere between the amplifier and the speaker Testing for an Amplifier Problem Now we'll need to see if the amplifier channel is bad. Put the left speaker back on the left amplifier channel and the right speaker on the right amplifier channel. This returns the speaker wiring to its original configuration. Again, with the vehicle and stereo off unplug the RCA cables from the amplifier's input and switch them so the left cable is in the right input and vice versa. Turn on the stereo system. Testing for an RCA Cable Problem For any intermediate components between the amplifier and the head unit follow these steps for each one. We only have a crossover so we'll just do this once. Begin by testing the RCA cables between the intermediate component and the amplifier. Unplug both RCA cables from the intermediate component's output. Now plug the working channel's RCA cable into the non-working side of the crossover. In our case the working channel is the right so plug the right RCA cable from the amplifier into the left side of the crossover. Turn on the stereo system.
If the right channel continues to work then you know the problem is in the RCA cables between the amp and the crossover. esting for a Crossover or Equalizer Problem At the input of the intermediate component (in our case the crossover) flip the RCA cables around (left to right input and vice versa). Turn on the stereo system.
If the right channel continues to work and the left channel continues to not work then you know the problem is in the intermediate component. Replace or repair this component.
If the problem is now in the right speaker and the left speaker works then the problem lies before the crossover. Turn off the stereo system and return the RCA cables to their normal places.
Testing for a Head Unit or RCA Cable Problem Pull out the head unit from the dash so you can access the RCA cables. Unplug both RCA cables from the head unit. Do not disconnect any other wiring. Plug the right RCA cable into the left channel of the head unit. Turn on the stereo system.

Sep 29, 2016 | Cars & Trucks

1 Answer

Wiring diagram for amplifier xf3f-18c808-aa


2004 Lincoln Aviator Car Stereo Wiring Diagram

Car Radio Battery Constant 12v+ Wire: White/Yellow
Car Radio Accessory Switched 12v+ Wire: Black/Pink
Car Radio Ground Wire: Black/Orange
Car Radio Illumination Wire: Red/Black
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Orange/Light Green
Left Front Speaker Negative Wire (-): Light Blue/White
Right Front Speaker Positive Wire (+): White/Light Green
Right Front Speaker Negative Wire (-): Dark Green/Orange
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Gray/Light Blue
Left Rear Speaker Negative Wire (-): Tan/Yellow
Right Rear Speaker Positive Wire (+): Orange/Red
Right Rear Speaker Negative Wire (-): Brown/Pink

Nov 27, 2011 | 2004 Lincoln Navigator

1 Answer

How to connect speakers to RCA model #RP-8070D


This unit is just a 5 disc CD player and cannot drive large speakers all by itself. Normally it is hooked up to a stereo receiver / amplifier which is what provides the power to drive the speakers which are wired to the back of the stereo amplifier.

If you have a home stereo, then just run the cables from the 2 AUDIO OUT connectors on the back of your CD player to the CD IN connectors on the back of your stereo.

Then turn your stereo on and select CD on your stereo input mode selector and you should be able to play the cds on your RCA and hear them through the stereo speakers.

If you do not have a stereo amplifier with speakers to connect it to, then you can always listen to it through headphones connected to the headphone jack.

Or if you have a set of self powered amplified speakers, like the kind you hook up to a computer, then you can run the AUDIO OUT cable from your cd player into those as well.

Good luck.

Apr 14, 2011 | RCA Audio Players & Recorders

1 Answer

I have a pair of Hitachi speakers probably off of a portable stereo that i want to hook to my pc, I hooked them up and they work but the volume level is very low I think they were powered by the stereo...


you need a amplifier

because most computer speakers have amplifiers in them and they plug into the wall

the speakers that you are plugging into the computer have a impedance which is too high for the computer but the impedance is normal for a stereo or tv

so i recomend you get a cheap amplifier
or a cheap set of computer speakers with amplifier take out the speakers and attach the hitachi speakers in place of the orginal
and it should work

May 10, 2010 | Hitachi CMPAS04 TV Speakers

1 Answer

Connecting a car stereo to an amplifier


you have to connect your 4 speakers to 4 speakers output direct to your car stereo no need of amplifier to 4 speaker but speakers should be small not like a woofer, and you have to connect your sub woofer by using amplifier don't connect direct. connect the output of your car stereo (using 2 RCA) to the 2 RCA inputs of amplifier. If u connect your 4 speakers to your amplifier then your car stereo does not support Left Right channel.
You can also connect your laptop or iPod direct to your amplifier.
Good Luck
enjoy music

Nov 24, 2009 | Kenwood Car Audio & Video

1 Answer

I don't know how to connect the wires from my JVC car stereo


Radio wire colors:
P o w e r Memory (+12v Constant) Yellow Ignition (+12v Switched) Red Ground (-) Black Dimmer Pink/White (Alpine only) Power Antenna Blue Amplifier Turn-on Blue/White Phone Mute Light Blue (Sony only) S p e a k e r s Right Front (+) Gray Right Front (-) Gray/Black Left Front (+) White Left Front (-) White/Black Right Rear (+) Violet Right Rear (-) Violet/Black Left Rear (+) Green Left Rear (-) Green/Black

1991 Oldsmobile Cutlass Supreme Car Stereo Wire Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
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Jun 03, 2009 | JVC KW-XC777 CD / Cassette Player

2 Answers

Kenwood amplifier


A home stereo system is not complete without an amplifier which drives the speakers. A preamp cannot drive a speaker. Try to read the labels at the back of the system...if it reads speaker then that is the amplifier output. Would you mind giving us what model is your system?

Sep 18, 2008 | Audio Players & Recorders

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