Question about Dual XDMR7710 CD Player

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When I increase the volume....

....past level 14, the speakers 'pop' from high to low volume, and the panel lights on the head unit go dim and bright along with the sound. Nice light show, but not really what I needed :)

As far as I know, everything is connected properly. Is this a defective head unit?

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There is still something wrong with the connection. Check your circuit and Get it rewired.

Posted on Jun 10, 2008

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Posted on Jan 02, 2017

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2005 cavalier dash lights not working. all fuses are goood. replaced cluster, dimmer switch, multifunction switch


Back lighting or warning lights ? check engine , ABS , air bags , seat belt , oil light etc... ?
Interior Lamps Dimming
The second group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination and incandescent lamps.
• Power window switches
• HVAC control head assembly
• Radio
• The instrument panel cluster (IPC)
When the ignition switch is turned to the ON position, the vacuum fluorescent (VF) display (radio) turns on at maximum brightness. When the park lamps are ON all incandescent back lighting turn ON at the dimming level indicated by the IP dimmer switch. At the same time all vacuum fluorescent (VF) displays dim to match the indicated dimming level. When the headlamp switch is placed in the PARK position, the park lamp supply voltage circuit provides an input to the body control module (BCM). The BCM then supplies voltage to the instrument panel dimmer switch through the instrument panel dimming lamps control circuit. The setting of the instrument panel dimmer switch determines the amount of voltage that the instrument panel dimmer switch supplies to the BCM through the instrument panel dimming lamps low reference circuit. The BCM then sends a pulse width modulated (PWM) voltage to all the interior lamps. All the vacuum florescent (VF) and incandescent back lighting lamps are provided a specific voltage and are then grounded. When the headlight switch is turned to the PARK or HEADLAMP position, all incandescent back lighting turn on at the dimming level indicated by the IP dimmer switch. When the IP dimmer switch is moved from MIN to MAX, all vacuum fluorescent (VF) displays, as well as all incandescent back lighting respond from Minimum intensity to maximum brightness in response to the IP dimmer switch.

I would have it checked for DTC'S - diagnostic trouble codes stored in the BCM !
DTC B2624 Display Dimming Input Range/Performance
The body control module (BCM) supplies voltage to the instrument panel dimmer switch through the instrument panel dimmer switch signal circuit. The dimmer switch varies the voltage and returns the new voltage to the BCM through the dimmer switch signal return circuit. The BCM uses this voltage to determine the illumination level of the instrument panel lamps.

DTC B2625 Display Dimming Pulse Width Modulation (PWM) Output Circuit Range/Performance
The body control module (BCM) receives a variable voltage from the instrument panel (I/P) lamp dimmer switch. The BCM uses this signal in order to vary the illumination level of the I/P lamps. The I/P dimming lamps output from the BCM is a pulse width modulated voltage supply used to light the I/P lamps. If a malfunction occurs in the I/P dimming lamps output circuit, this DTC is set.

DTC B2662 Park Lamp Switch Circuit Malfunction
The park lamps are controlled by the turn/headlamp switch. Positive battery voltage is supplied to the switch through the EXT LP fuse. When the turn/headlamp switch is placed in the park or head position, battery voltage is supplied to the park lamps. The body control module (BCM) is also connected to the park lamp circuit to sense whether or not the park lamps turn ON when the low beam or high beam headlamps are turned ON. The BCM also uses the parklamp battery positive voltage to power the instrument panel (I/P) dimmer output circuit. If the BCM senses that the low beam or high beam headlamps are ON and the park lamp input is not active, DTC B2662 sets.
Do the park lamps work ?

Jun 11, 2017 | Cars & Trucks

2 Answers

Dashboard lights will go out randomly. It has done it for short periods before but it did it for 200 miles on hwy in dark.


The sensor is usually located on the top of your dashboard. You might see it if you look into your vehicle through your windshield at your dash.
I have seen( one time ) that a gps was bright enough that it caused the dash lights not to come on because the sensor thought it was light outside.
Or you could have gotten a bad sensor.

Oct 23, 2015 | 2010 Chevrolet Equinox

1 Answer

Nokia 6303ci -low speaker level.Volume bar-on max.After clean -same.Someone told me that for this model is normal low speaker level,but I don`t think so.


If the original recording is on low volume then you will get louder sound on the player device while if the recording is at high volume the you get low levels on player. try recording at lower volume settings on the phone. Then when you play it it will sound louder on increased volume.

Oct 26, 2013 | Nokia 6303 Cell Phone

1 Answer

Beringer PMH 660M has very low power output to speakers and when the volume in increased the output pops in the speakers and goes completely dead, everything else works ok and the lights stay on


could possibly be the volume switch, try changing the switch with one that you hardly use to eliminate the problem. any further probs just let me know. hope this helps

Feb 16, 2012 | Behringer Music

1 Answer

I installed a Pioneer DEH-P800PRS head unit and 4 Kenwood KFC-1662S speakers in my 2003 Dodge Dakota extended cab truck. I used a Kenwood KAC-5204 2 channel amp connected in parallel. Sounds good at lower...


Hello.... sorry to hear about your problem. Bass is the ultimate evil of coaxial speakers. You have a couple of options here, and this is just my professional opinion because I do not know what your lifestyle details, such as truck space needs, type of music you listen to, budget, etc. If you are looking for alot of bass, the best bet would be to use 2 external amplifiers, 1 for the interior speakers, and 1 for a subwoofer. You would then need to purchase an electronic crossover. With this setup, you can remove all of the low frequencies from the coaxial speakers and put them where they belong, with the sub. You will gain EXCEPTIONAL clarity and a very high volume before distortion level. Again it will depend on what your budget is and if you are willing to compromise on some cab space. The only other option you have at this point is if you are wanting to play your music at high volume levels, you will just need to reduce the bass level as you increase volume. I hope this has helped. Good luck with your venture!!

20 year car audio/video installer
Bay manager

Mar 16, 2011 | Pioneer Car Audio & Video

1 Answer

Speaker level really low


you have to make sure you increased the volume on the computer itself.go to the control panel and click on sound,speech and audio devices.change the volume settings and speaker settings.this should bring about the desired result.

Jul 01, 2010 | Creative Labs Inspire 6600 Computer...

1 Answer

My left speaker to my Sony HCD-GX450 stereo is


Make sure that Loudness switch is turned off & bass is not boasted up. Most cars have small cheap speakers that can't handle the bass. also its better to cut the low frequency from the woofer using a passive or active crossover. Most nowadays head units have got some sort of built in crossover. Refer to your head unit manual.

Sep 20, 2009 | Audio Players & Recorders

1 Answer

Power problem?


???

1. Is the head unit powering the speakers directly or through an amp?
2. What ohm load (4,8,) per channel and how many speakers?
3. Does it do it with the bass set all the way down?

If you have access to a voltmeter see what the voltage is on the yellow and black wires when it is diming. It should be stable ~ 13.5v with car on. if its < 10v when dimming either there is:

1. Shorted speaker lead.
2. Bad ground to radio.
3. loose power feed to radio.
4. Ohm load below 4 ohms, causing the eccess current draw.

May 15, 2008 | Pioneer DEH-P4500MP CD Player

3 Answers

Wave Radio-dial face,display very dim.


Our Bose did the same thing after a power outage. This one doesn't have a CD button, so we tried holding down the Clock button and used the volume control and that seems to have fixed it.

Mar 23, 2008 | Bose Wave Radio

1 Answer

Bose wave radio/cd


Found this in the manual:

To adjust the display brightness -

The display dims automatically to medium or low brightness, as appropriate for low light room conditions. You can adjust the brightness setting of the display for both strong light and lowest light environments, but not for the medium light setting. Turn the system off before setting brightness levels.

• In a strongly lit room, hold down CD Mode and press Volume up or down to adjust the setting between 5 and 9 (it is preset to 8).
• In a barely lit room, hold down CD Mode and press Volume up or down to adjust the setting between 1 and 5 (it is preset to 2).
• If you do not want the system to dim automatically, set both levels to 5.

Feb 25, 2007 | Bose Wave Radio

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