An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: Doesn't turn on
Measure the DC voltage across the B+ and ground terminals as well as across remote and ground. If you have less than 11 volts when the amp tries to power up, the amp could be shutting down due to low voltage.
If the voltage remains near or above 12v, disconnect all speaker wires and signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Chances are you have a shorted output or partially / completely blown speaker. Check all speaker output impedances. If one of them is significantly lower, disconnect that speaker/output and try turning the bass up again. If it works fine, trace that wire to the short or blown speaker. If all impedances look ok, or disconnecting that output doesn't help, then it's time to rip the unit apart and diagnose the amp.
Most amps have a remote on terminal, which takes a small current wire to "turn on" the amp, and when you stop current to that terminal, it turns off the amp. It sounds like this current is still live when you turn the car off, so your amp doesn't know to turn off.
With the car off, test the lead at the remote on terminal (usually blue wire, as I do it) with a dc meter or test probe. If it reads +12v, it shouldn't. Find a new "remote on" power lead. This is generally provided by the "power antenna on" lead out of the deck. Run a wire to the amp from the power antenna on lead, and retest.
could be internal problem with the amp, but there is a possibility it is something else. Are there other amps in your car? Do they turn on quickly? If this is the only amp, try the following: - disconnect turn-on lead from amp (blue wire?) - turn on stereo (volume normal or low) - use small piece of wire to connect 12V terminal to turn-on terminal. you can just touch the wire to the terminals - paper clip will work, too. - if the amp still takes forever to power up, then the problem is internal to the amp. - if the amp powers up right away, the problem could be in the turn-on output from your head unit. You can resolve this by using a relay, or by using the ACC output from the ignition (red wire at radio wiring harness) to turn on the amp.
the amp is a 200 Watt by 4 im guessing and its doing that because its going into protection mode unhook the subs if it stops then 1 you have a bad sub or 2 the subs are too much for the amp if an amp is rated 200w per chanel its 200 max about 75 rms or 75 normal constant power
Connect a DC voltmeter between the "remote" (+) terminal and the "ground" (-) terminal on the amp. When you turn on your Pioneer, you should read 12-14V. If you get voltage for a second and then it goes away, either the incorrect wire from the head unit is connected, or the head unit remote turn-on is defective. If the voltage remains on the terminal and the amp immediately turns back off, it's possible that the remote turn-on is not supplying adequate current for the amp. To determine if that is the case, run a separate wire from a positive (+) accessory terminal (cigarette lighter or fuse box) to the amp remote terminal. If the amp then turns on and stays on, you'll need to wire a relay into the turn-on wire. The wiring for such a relay is shown here. Most any 12V SPST or SPDT relay from an auto parts store or Radio Shack will work OK.
One of two things...Amp is going into overload protection (should be indicated by a light on the amp), or you have insufficient power going to the amp....if this is the problem, try a 2 farad capacitor on the input power line to the amp.