Question about Boss Riot 2500D Car Audio Amplifier

2 Answers

Boss 2500d gets hot and trips off and on every 5 mins...

I recently bought a boss 2500d. It performs well during the first half an hour then it trips off, and after five minutes it would come back on or I could I take off the power and put it back on, then it would play for a min and trip off back. During this time the protection light comes on then switches off accordingly. The speaker is new and not faulty and within the stipulated ohms specs the amp is designed for. All connections and wires are new and insulated and well connected including power and ground. Sufficient power is supplied to feed the amp. The amp gets extremely hot when playing at 2, 4 or even 8 ohms at only quarter the gain level and half the head unit, then it trips off. Does it nead a fan or something? What's up with that? It seems as though when the amp is cool it plays continuously. Could it be failing output transistors or a lack of proper contact thereof?

Posted by andy mullet on

  • peter_brown_ Aug 28, 2008

    Hi I have a 5 channel boss amp. After playing it loud for 1 or 2 hours it starts tripping off--then comes back on in like 3-4 minutes. Or I can turn off the unit --then turn it back on & it will work for 2-3 minutes then it trips off again. And it will do this until I turn it off for a while & let it cool down. Then it will play for 1 or 2 hours then start quiting all over again. Can I do anything with that safety switch? Thanks,

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2 Answers

Anonymous

The amp is monoblock so there is no bridging of a single channel to itself.

Posted on Feb 12, 2008

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If you are bridging the amp then you must DOUBLE the "ohms load" that is specified. I.E. If you need 4ohms per channel, then when bridged you would need 8ohms per bridged channel. If your load is indeed correct then you have a fried output probably. Try to run it without any speakers on it. If it still gets hot then you for sure have a fried amp. All the symptoms you decribe sound just like you have too much of an "ohms load" though.

Posted on Aug 01, 2007

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To perform an OBDII Driving cycle do the following:



  1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 50°C (122°F) and within 6°C (11°F) of the ambient air temperature at startup. Do not leave the key on prior to the cold start or the heated oxygen sensor diagnostic may not run.



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  4. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.



  5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 32km/hr (20 mph). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.



  6. Accelerate. Accelerate at 3/4 throttle until 88-96 km/hr (55-60mph). This will perform the same diagnostics as in step 3.



  7. Hold Steady Speed. Hold a steady speed of 88km/hr (55mph) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.



  8. Decelerate. This will perform the same diagnostics as in step 5. Again, don\'t press the clutch or brakes or shift gears.



Reprinted on OBDII web site courtesy of General Motors Corporation

© General Motors Corporation

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1 Answer

System monitor - clearing DTCs -
It's not a matter of how many miles, it's more "how" you drive. If you do not have an engine light on now, whatever you do, DON'T disconnect the battery. That will trip all your readiness monitors and make it more difficult to complete the drive cycle. If you have a code set now and the engine light is on, it would be best to get the car scanned and find out how to repair the problem or you are going to waste a lot of time and money driving around and going to the test to get rejected. If there is no light on but you have made a repair and cleared the codes, this is how to drive the car to reset the readiness monitors.

Performing a GM OBDII Driving cycle:

  1. Cold Start. In order to be classified as a cold start the engine coolant temperature must be below 122°F (50°C) and within 11°F (6°C) of the ambient air temperature at startup.
    Do not leave the key in prior to the cold start or the heated oxygen sensor diagnostic may not run.
  2. Idle. The engine must be run for two and a half minutes with the air conditioner on and rear defroster on. The more electrical load you can apply the better. This will test the O2 heater, Passive Air, Purge "No Flow", Misfire, and - if closed loop is achieved- Fuel Trim.
  3. Accelerate. Turn off the air conditioner and all the other loads and apply half throttle until 55mph (88km/hr) is reached. During this time the Misfire, Fuel Trim, and Purge Flow diagnostics will be performed.
  4. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for 3 minutes. During this time the O2 response, air Intrusive, EGR, Purge, Misfire, and Fuel Trim diagnostics will be performed.
  5. Decelerate. Let off the accelerator pedal. Do not shift, touch the brake or clutch. It is important to let the vehicle coast along gradually slowing down to 20 mph (32km/hr). During this time the EGR, Purge and Fuel Trim diagnostics will be performed.
  6. Accelerate. Accelerate at 3/4 throttle until 55-60mph (88-96 km/hr). This will perform the same diagnostics as in step 3.
  7. Hold Steady Speed. Hold a steady speed of 55mph (88km/hr) for five minutes. During this time, in addition to the diagnostics performed in step 4, the catalyst monitor diagnostics will be performed. If the catalyst is marginal or the battery has been disconnected, it may take 5 complete driving cycles to determine the state of the catalyst.
  8. Decelerate. This will perform the same diagnostics as in step 5. Again, don't press the clutch or brakes or shift gears.

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amplificador en proteccion boss exxtreme 2500 watts los mosfect estan bien los compre nuevos los fb3120nd

Mar 09, 2011 | Boss Riot 2500D Car Audio Amplifier

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hermanos necesito de su ayuda es un amplificador boss monoblock 2500 watts exxtreme clase D el problema es el siguiente el amplificador lo tenia trabajando a 1 ohm y un dia se le reventaron tres condensadores se los cambie y prendio ahora se proteje pero si les quito dos de los mosfect que son los fb3120d prende el led verde pero se los coloco y se protege y estos mosfect son nuevos y los pruebo y estan bien no estan en corto ni nada y bueno que me dice espero y pueda ayudarme gracias de ante mano

Mar 09, 2011 | Boss Riot 2500D Car Audio Amplifier

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