Question about Yamaha P4500 Power Amplifier 2-Channel

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The application of power amplifiers in electronics equipment specially television and radio

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  • Patrick Cochran
    Patrick Cochran May 25, 2011

    Look at the above links

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Lost sound on 2005 impala. radio works. seems like amp problem.


Do you have base or up;level system ?

Table 1: Radio Features
Table 2: Cassette Features
Table 3: Compact Disc Features
Table 4: XM Advisory Messages
The radio receives power from the RADIO fuse in the junction block-right I/P. Ground is provided via G201 and G202. The radio is enabled/disabled by class 2 messages from the body control module (BCM). The radio routes audio signals from the digital radio receiver or the vehicle communication interface module (VCIM) to the speakers and/or amplifier when directed by class 2 messages.
The Entertainment System on this vehicle is configured with an AM/FM stereo radio with the radio data system (RDS) and either a cassette player or a CD player or both. CD and cassette. The uplevel system provides the customer with extended range speakers and an audio amplifier. Satellite digital radio (U2K) is available with uplevel systems.
The following list shows the radios available for this vehicle:
• Radio (ULO) - AM/FM Stereo, Cassette with RDS
• Radio (UNO) - AM/FM Stereo, CD and RDS
• Radio (UPO) - AM/FM Stereo, Cassette with CD and RDS .The complexity of the radio systems on these vehicle is mind blowing .

Your best bet take it to a GM dealer , has features you are unawear of .
DTC B1025, B1035, B1045, or B1055
When the radio is powered up, the radio supplies low level audio signals to the speakers. If the vehicle is equipped with an audio amplifier, the amplifier will boost the signal sent to the speakers.
DTC B1025 Audio Output Circuit
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool, monitor the DTC Information for DTC B1025.
Does the scan tool indicate that DTC B1025 is current?

Jan 31, 2017 | Cars & Trucks

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Get sound on radio install.


Your 2004 Vibe may have been equipped with a radio or a radio and separate amplifier. The BLU/WHT wire supplies +12 V to the radio. The radio ground wire is BRN. A GRY wire powers dial illumination. The BLK/WHT wire you mention is either the antenna input or a sensitivity control input to the amplifier. There also may have been a WHT mute control wire connected to the amplifier. The Vibe has an antenna amplifier which needs +12 v. The aftermarket radio should have separate LF, RF, LR, and RR outputs to connect to the corresponding speakers or amplifier inputs.

Sep 13, 2016 | Cars & Trucks

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How to program for Diagnosing Automotive Faults with Class D Audio Amplifiers


What are you trying to do?
The diagnostic capability that is built in and programmed is to meet OEM specs on the automobile and is not something a user would even want to try. You need special equipment and interface devices.

Aug 24, 2012 | Car Audio & Video

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Hi, I havnt use this tv for a long time. When i suddenly want to use it, the power does not go on. Help please.


'copper oxide sometimes messed up with equipment that were not use for a long time specially electronic equipment. Contacts especially switches were the number one that corrode and fail. Cleaning those parts with contact solution may solve the problem but if don't have any experience opening such equipment you'd better call an electronic service technician for the job.

May 28, 2011 | Audiovox FPE1907DV TV/DVD Combo

2 Answers

Hav nad 2100. I dont understand what the lab in post are for?


From what I have found online, Lab-In was a NAD feature that restored the frequencies that were rolled off when turntables were being used.

http://web.295.ca/~peak//audio.html

"NAD belleived at the time that practical PHONO stages and the preamp and power amplifier stages be rolled off at subsonic frequencies to prevent subsonic wow and flutter from Turntables and supersonic frequencies (EMI/RF/Radio) signals from getting into the system in the first place. Their notion was that if your ears cannot physically hear it, then why amplify it. For the PURIST, there were a set of LAB IN amplifier inputs with more extended response called "LAB IN" inputs"

Use them UNLESS you have a turntable source.

Feb 23, 2011 | NAD C325BEE Amplifier

1 Answer

Radio diagram for 2004 nissan titan


DIRECTWIRE™ WIRING INFORMATION - NISSAN / TITAN / 2004 / Audio


Radio 12v yellow + radio harness
Radio Ground (chassis)
Radio Ignition purple + radio harness
Radio Illumination red/blue + radio harness
Factory Amp Turn-on green/white + radio harness or amplifier
Notes: If equipped, the BOSE amplifier is to the right of the steering column, behind the BCM.
Power Antenna N/A
LF Speaker +/- blue/white - blue/red +,- radio harness or amplifier
Notes: If equipped, the BOSE amplifier is to the right of the steering column, behind the BCM.
RF Speaker +/- white/black - blue/black +,- radio harness or amplifier
LR Speaker +/- lt. blue - black/yellow +,- radio harness or amplifier
RR Speaker +/- orange/blue - red/blue +,- radio harness or amplifier
Interface Module: Category:
Immobilizer Bypass Required:
Yes Type:
Transponder
Part #: 556UW
Alternate Part1 #: 555U
Alternate Part2 #: DesignTech 20402
Alternate Part3 #: DesignTech 29402
Notes: Standard on the SE and LE models. Optional on the Crew Cab XE models.




This wiring information is being provided free of charge on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it using a digital multimeter.
Directed electronics, Inc. assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. DEI assumes no liability or responsibility resulting from improper installation, even in reliance upon this information.

Hope helps (remember to rate this nswer)

Jan 30, 2011 | Nissan Titan Cars & Trucks

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I would like to see a wiring dieagram for a 2005 tahoe sterio speakers


Radio 12v red/white + radio harness Radio Ground black - radio harness Radio Ignition (GMLAN Serial Data) Radio Illumination yellow (dimmer) + radio harness Factory Amp Turn-on same as power antenna wire Power Antenna white + radio harness LF Speaker +/- tan - gray +,- radio harness or amplifier Notes: If equipped, the amplifier is under the rear of the center console.

At the amplifier, the left subwoofer wires are dk. blue/white (+) - lt. green/black (-). The right subwoofer wires are dk. green (+) - lt. blue/black (-). RF Speaker +/- lt. green - dk. green +,- radio harness or amplifier LR Speaker +/- brown - yellow +,- radio harness or amplifier RR Speaker +/- dk. blue - lt. blue +,- radio harness or amplifier clear.gifthat should be it **** if u need more help feel free to email me at bertman285@hotmail.com

Oct 05, 2009 | Car Audio & Video

1 Answer

Toyota tacoma 2007 stereo wiring Colors for the following wires: Power-ignition Ground


Radio 12v blue/yellow + radio harness
Radio Ground brown - radio harness
Radio Ignition gray + radio harness
Radio Illumination green + radio harness
Factory Amp Turn-on N/A
Power Antenna N/A
LF Speaker +/- pink - purple +,- radio harness or amplifier
RF Speaker +/- lt. green - blue +,- radio harness or amplifier
LR Speaker +/- black - yellow +,- radio harness or amplifier
RR Speaker +/- red - white +,- radio harness or amplifier

Notes: If equipped, the amplifier is on the passenger side rear cabin wall.

Sep 13, 2009 | 2007 Toyota Tacoma

1 Answer

Same thing


most of the modern tv sets come with a special type of fuse called polyfuse. if you cant find the normal fuse near the power section then it is clear that your tv is equiped with polyfuse. Poly fuse are special type of electronic fuse that will automatically reset after the failure.
if itis clear that your tv is equiped with polyfuse dont blame the fuse.

Jul 04, 2009 | Vizio GV47LF Television

2 Answers

Loud continous popping from car radio


I have an older Caddy that began doing this in the RF speaker, so I now get good music from the rears only. ha

But I found a website for my car radio, and learned that my car has a separate amplifier for each speaker, located with the speakers, and that the popping was due to a bad amplifier.

Of course, I don't know anything about your radio, but you might begin your search by focusing on the amplifier.

Roger

May 09, 2008 | Audio Players & Recorders

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