Question about Dual (DBXPA6100) Car Audio Amplifier

Channel mobil power amplifier hooked to a 4 ohm 10" subwoofer. input is from car radio output.

Status LED glows red "protect" or fault, its supposed to be green, guide claims speaker problem (crossed wires, defective speaker, or improper ohm rating (less than 4ohm load) . Wires not crossed. 4 ohm subwoofer is supposed to be ok for this amp, tested it on 6 ohm speaker, still red. Tested speaker in bridged and unbridged single channel, still red.

Speaker tests ok on another amp.

Amp is no

Look at these and only these... power or ground...either your power wire has grounded out somewhere (ud be surprised) or youdont have a good enough ground....i would check the ground first....hopefully this helps

Posted on Jan 27, 2009

Not sure what you mean by AB but being that this is a monoblock or 1 channel amplifier you can only hook it up 1 way. Verify the polarity from your speaker box. + to + and - to -. As far as your impedance is concerned this amp is stable to 1.5 ohms but for this case we will assume you have two 4 ohm subwoofers. When you parallel these together you will have a total effective load of 2 ohms on the amplifier. This is a stable operating impedance for the amp.

Other impedance options are:

two 8 ohm speakers = 4 ohm load

three 8 ohm speakers = 2.66 ohms

If you have dual voice coil subwoofers then parallel the coils on each sub + to + and - to -. Depending on the impedance of each sub you may then have to wire the individual subwoofers in series. Here is an example.

2 dual voice coils with 4 ohm taps

Each subwoofer with the coils in parallel would be a 2 ohm load if you were to then parallel the two subwoofers together you would have 1 ohm total load on your amp. This is BAD for your amp. Your option is to run the subwoofers in series.

To run the speakers in series is simple. The + from one speaker and the - from the other will be connected to the amp. The other + and - from the speakers will be connected together.

Here is a wiring diagram from kicker.

http://www.kicker.com/dvc_wiring

Other impedance options are:

two 8 ohm speakers = 4 ohm load

three 8 ohm speakers = 2.66 ohms

If you have dual voice coil subwoofers then parallel the coils on each sub + to + and - to -. Depending on the impedance of each sub you may then have to wire the individual subwoofers in series. Here is an example.

2 dual voice coils with 4 ohm taps

Each subwoofer with the coils in parallel would be a 2 ohm load if you were to then parallel the two subwoofers together you would have 1 ohm total load on your amp. This is BAD for your amp. Your option is to run the subwoofers in series.

To run the speakers in series is simple. The + from one speaker and the - from the other will be connected to the amp. The other + and - from the speakers will be connected together.

Here is a wiring diagram from kicker.

http://www.kicker.com/dvc_wiring

Jun 11, 2011 | Jl Audio Slash 500/1 Car Audio Amplifier

Sure. Specs are listed below. I think it's designed for regular 2-channel input, isn't it?

Front Channels: 100 W RMS x 2 @ 1.5 ohm-4 ohm (11V-14.5V)

Rear Channels: 25 W RMS x 2 @ 1.5 ohm-4 ohm(11V-14.5V)
Subwoofer Channel: 250 W RMS @ 1.5 ohm-4 ohm (11V-14.5V)
THD at Rated Power: <0.03% @ 4 ohm (F&R), <0.05% @ 4 ohm (Sub)
S/N Ratio (F&R): >108.5 dB below rated power S/N Ratio (Sub): >95 dB below rated power
Frequency Response (front and rear): 5 Hz-30 KHz (+0, -1dB)
Frequency Response (sub channel): 5 Hz-500 Hz (+0, -1dB)
Damping Factor (front and rear): >200 @ 4 ohm/50 Hz
Damping Factor (sub channel): >500 @ 4 ohm/50 Hz
Input Range: switchable from 200mV-2V RMS to 800mV-8V RMS
Differential-Balanced Input Topology: (3 pairs of inputs)
Front Crossover: fully-variable (50 Hz-5 KHz), selectable- slope BP or HP (12 or 24 dB per octave)
Rear Crossover: fully-variable (50 Hz-5 KHz), selectable- slope HP (12 or 24 dB per octave)
Sub Crossover: fully-variable (40-200 Hz), selectable-slope LP (12 or 24 dB per octave)
Preamp Output: 2-channel (full-range or LP)
Bass EQ: Variable boost up to 15db
Infrasonic Filter: defeatable 24dB/octave at 30 Hz
Left minus Right Ambience Circuit: ambient effect for rear channels
Front and rear speaker output connections: accept up to 8ga. wire
Dual mono subwoofer output connections: accept up to 8ga. wire
+12V and Ground connections: accept up to 4ga. Wire
Dimensions: 19.7"L x 9.25"W x 2.36"H

Front Channels: 100 W RMS x 2 @ 1.5 ohm-4 ohm (11V-14.5V)

Dec 02, 2010 | Jl Audio 500/5 Car Audio Amplifier

Well without seeing a spec sheet on the amp and not knowing your voice coil impedance I will assume the following. If the speaker is dual 4 ohm voice coil the in parallel it would present a 2 ohm impedance to the amp. If this amp is stable down to 2 ohms bridged then that would be the hookup of choice. If it is not stable to two ohms with one speaker it will be tough to get full performance out of your amp. You would have to series the voice coils which would then present an 8 ohm impedance to the amp. Just look at your amp's manual before making the decision. My suggestion would be to get another one of those subwoofers parallel the voice coils on each then wire the two subwoofers in series. This would give you a 4 ohm load which your amp is almost certain to be able to drive.

Jan 28, 2010 | Boss REV-650 Car Audio Amplifier

disconnect all wires (including RCAs)

reconnect positive, ground, and remote.

Turn amplifier (car) on.

If it goes into protect mode again - there is an internal fault that requires professional repair.

If the amplifier idles as normal - turn off the car. Plug in RCAs & re-try

Failure? - replace RCAs as they may be pinched or faulty.

Lastly if all connections are made and amplifier idles without going into protection - you need to concentrate on your load (subwoofers).

Be sure they are wired properly into a resistance that amplifier is rated.

The lowest impedence that amplifier is rated is 2ohm.

That is possible with (2) 4 ohm subwoofers wired in parallel....

(4) 8 ohm subwoofers wires in parallel...

(1) Quad 1 ohm subwoofer...

or (1) Dual 4 ohm voicecoil subwoofer.

Any other combination will result in an impedence too low for your amplifier.

Next:

Using an OhmMeter (Digital multimeter set to Ohms 20) test each voicecoil against its advertised resistance. It should be CLOSE +/- .5 Ohms.

Any other reading means the voicecoil is blown.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

reconnect positive, ground, and remote.

Turn amplifier (car) on.

If it goes into protect mode again - there is an internal fault that requires professional repair.

If the amplifier idles as normal - turn off the car. Plug in RCAs & re-try

Failure? - replace RCAs as they may be pinched or faulty.

Lastly if all connections are made and amplifier idles without going into protection - you need to concentrate on your load (subwoofers).

Be sure they are wired properly into a resistance that amplifier is rated.

The lowest impedence that amplifier is rated is 2ohm.

That is possible with (2) 4 ohm subwoofers wired in parallel....

(4) 8 ohm subwoofers wires in parallel...

(1) Quad 1 ohm subwoofer...

or (1) Dual 4 ohm voicecoil subwoofer.

Any other combination will result in an impedence too low for your amplifier.

Next:

Using an OhmMeter (Digital multimeter set to Ohms 20) test each voicecoil against its advertised resistance. It should be CLOSE +/- .5 Ohms.

Any other reading means the voicecoil is blown.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

May 27, 2009 | Kicker (ZX750.1) Car Audio Amplifier

- CEA-2006 Compliant Amplifier Power Standard:
- 125 Watts x 2 @ 4 ohms <= 1% THD+N
- 380 Watts x 1 @ 4 ohms BRIDGE <=1% THD+N
- 75 dBA Signal-to-Noise Ratio
- Peak Music Power: 250W x 2 (4 ohm) / 760W x 1 (Bridge)
- 2 Channels
- Continuous Power @ 4 Ohm: 125W x 2
- Continuous Power @ 2 Ohm: 190W x 2
- Continuous Power Bridged @ 4 Ohm: 380W x 1
- Frequency Response: 10Hz-50kHz
- THD (1kHz, 4 Ohm): <0.015%
- Signal to Noise Ratio: >95dB
- Dimensions: 11 13/16” x 2 3/8” x 12 7/8”
- PWM Regulated MOSFET Power Supply
- Balanced Isolator Input Circuit
- Oversized Screw-Type Power/Ground Terminals
- 2 Channel RCA Inputs
- Speaker Level Input
- Screw-Type Speaker Terminals
- Hi-Volt Input Level Control (200mV-6.5V)
- Bass Boost (50Hz, 0/6/12dB)
- Selectable LPF (80Hz, -12dB/Oct.)
- Pioneer 1-Year Warranty

Feb 05, 2009 | Pioneer GM-5100T Car Audio Amplifier

if you have dual voice coils connect on each seporate sub negative left channel to possative right channel of the subwoofer same to other sub then conect the left possative and the right neggative to your box power terminal same to other sub then conect the two sub outs on your box left speaker positive to your positive left channel bridge then conect left speaker negative to the right speaker possative then connect your right speaker negative to your right channel negative brigdeg to your amp is single coil hook the box its self up the same way to your amp i have two dual voice cooil 12" hooked up to the same amp that way and it rocks without the power protecter turning on

Nov 09, 2008 | Pyle PLA2200 Car Audio Amplifier

the amp is going into protect mode due to something wrong in the amp or some thing in the wiring to it ooh yea if you are getting 18v power to the amp that is way to high it should not be higher then 15v if the amp is in protect mode it will not play at all.

Nov 02, 2008 | Visonik Dual Bass Box with Amplifier Car...

It probably has shorted output transistors. To eliminate other possible causes, read through the following page.

Amplifier in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Amplifier in Protect Mode - Troubleshooting

Let me know if you have any other questions.

Oct 31, 2008 | Visonik Dual Bass Box with Amplifier Car...

You are probably aware on how to use these output figures, but I'll write a quick explanation on the specifications for future readers anyways :)

The concpet CC-452 amplifier has the following power output specifications:

Calculated at 14.5 volts DC;

At 4 ohms per channel - 45 watts x 2 (RMS)

At 2 ohms per channel - 70 watts x 2 (RMS)

At 4 ohms bridged - 150 watts x 1 (RMS)

This means that your amplifier would provide 45 watts of power each for your front speakers, which are normally a 4 ohm load per side (45 watts for left, 45 watts for right), that's unless they are one of those exotic higher end brands (eg: Boston Z6s which are 3 ohms). Rarely, you will find speakers that are rated at 2 ohms per side, but in this instance the amplifier will provide 70 watts of power into each speaker. On your speaker specifications, you will find a value termed "nominal impedance" which will give you the ohm rating of the speakers being used..

On the other hand, if you "bridge" both channels into a single channel (using a diagram often marked on the speaker terminals of the amp), you could then provide 150 watts into a subwoofer (providing it was a 4 ohm woofer).

It's not recommended to use this amp bridged under 4 ohms..

Some subwoofers may be lower than 4 ohms, and you will not be able to use this amplifier for these types of speakers without risking amplifier failure. Also, some subwoofers may have 2 seperate voice coils, and you will have to use both channels of the amplifier seperately (not bridged) in order to correctly connect this type of speaker for use.

The concpet CC-452 amplifier has the following power output specifications:

Calculated at 14.5 volts DC;

At 4 ohms per channel - 45 watts x 2 (RMS)

At 2 ohms per channel - 70 watts x 2 (RMS)

At 4 ohms bridged - 150 watts x 1 (RMS)

This means that your amplifier would provide 45 watts of power each for your front speakers, which are normally a 4 ohm load per side (45 watts for left, 45 watts for right), that's unless they are one of those exotic higher end brands (eg: Boston Z6s which are 3 ohms). Rarely, you will find speakers that are rated at 2 ohms per side, but in this instance the amplifier will provide 70 watts of power into each speaker. On your speaker specifications, you will find a value termed "nominal impedance" which will give you the ohm rating of the speakers being used..

On the other hand, if you "bridge" both channels into a single channel (using a diagram often marked on the speaker terminals of the amp), you could then provide 150 watts into a subwoofer (providing it was a 4 ohm woofer).

It's not recommended to use this amp bridged under 4 ohms..

Some subwoofers may be lower than 4 ohms, and you will not be able to use this amplifier for these types of speakers without risking amplifier failure. Also, some subwoofers may have 2 seperate voice coils, and you will have to use both channels of the amplifier seperately (not bridged) in order to correctly connect this type of speaker for use.

Oct 28, 2008 | Concept CC-452 Car Audio Amplifier

Are you sure you can put a 2 ohm load on this amp? Thats almost a complete short.

Jun 13, 2007 | Rockford Fosgate Punch 301S Car Audio...

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thank you howdiuhhhh.

You were exactly correct.

Ground wire was attached to body but paint on body work was interfering with good connection.

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