Question about Crest Audio CA9 Car Audio Amplifier

1 Answer

Clip and protect LEDs but no speaker output - Crest Audio CA9 Car Audio Amplifier

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 58 Answers

Protect is a mode that it goes into that prevents future damage, i would recommend replacing the fuses.

Posted on Oct 24, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Amplifier (now 8 years old) fails to power up. When pressing ON the input selection LEDs light but it sounds like the protection relay operates and there is no output.


It's possible that there's a short in the speaker crossover that has reduced the impedance below safe levels.

Otherwise, the relay/breaker might just need to be replaced.

Sep 21, 2015 | Audio Players & Recorders

1 Answer

Nad 7600 receiver


Power up without the speakers off, if the problem still exist, check output and driver transistors for leek or short.

Apr 03, 2014 | Audio Players & Recorders

1 Answer

Clip light is on volume is low


It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be with your output drivers. Please check for short on the outputs fitted for both the channels. Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise which can be a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board. Maybe the protect circuit by itself is shutting off due to a faulty bias or there is a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the amplifier comes out of the protect mode then check for short on the speakers

Nov 30, 2011 | Kenwood VR-307 Receiver

1 Answer

No output on either speakers or headphone, input meters are permanently lit up all the way to the red 0dB LEDs (i.e. overload). I have tried direct USB input and the USB LED on device lights up and...


Ive just fixed 5 of these :D (for a studio)
All had the problem with the signal clip being lit up as soon as you plug it in.
I found on every one, the component U9 had failed! (after 6 hours of probing)thought id post this up as i couldn't find a fix any other place!Checked the service manual, U9 is a:IC VOLTAGE INVERTER CHARGE PUMP UNREG TPS60403 SOT23-5
got mine from:http://int.rsdelivers.com/product/texas-instruments/tps60403dbvt/tps60403-60ma-250khz-inverter-sot23-5/5171208.aspx
soldered it in and jobs a good'n

Jul 17, 2011 | Alesis iO | 2 Sound Card

1 Answer

The amp won't power up. The cord is is, the power is on, but when I press the Standby/On button, the MP3 LED blinks a few times, then it goes off and all the LEDs, from the protection, speaker A, B and so...


Hi... If all the speakers are connected properly then I would say, there is a failure in either the power supply filtering caps or one output has failed and it's going into Protect mode to keep from frying the speakers
It will require service at that point.

Aug 21, 2010 | Cambridge Audio Azur 650a 2Channel...

1 Answer

My peavy has three lights at power on when in use red light comes on is that beacuse my amp is overheating or is it normal it does that when i crank the volume amp i not hot well vented


Here is a link to the manual:http://www.peavey.com/assets/literature/manuals/00512180.pdf Page8 sections 2 through 4 discusses the LEDs. I think what you arte talking about is the DDT active LEDs. Page 12 specifically discusses this and page 15 notes that Red signifies DDT clipping. Peavey recommends that you don't defeat the DDT circuit and that is good advice as it protects your amp and your speakers. The clipping is not caused by the amp but by the amount and quality of signal being input. Check earlier in your signal chain for the cause.

Aug 14, 2010 | Peavey Pv 2600 Power Amplifier

1 Answer

CROWN CE1000- slips into fault immediately after connection


if ur output power amp is defective u will have that problem - meaning the moment u connect load across it it will go into circuit protection to limit/stop excessive output current. make sure the speaker terminals are connected to +/- output terminals. in bridge mode use only channel 1 and that too with 4 ohms speaker only otherwise amp will clip. considering all connections are okay if it still clips when speaker is connected, u have a faulty power amp section. this the way ur amp is designed

Apr 05, 2010 | Crown CE1000 2-Channel Amplifier

1 Answer

When i turn up the volume on my head unit my amp goes into protect mode or when i turn up the bass


You likely have a speaker with a swollen voice coil. Voice coil becomes hot due to under powered amp being clipped. Voice coils swells and rubbs. shoteing amp output causing amp to go into protect. replace speaker before amp is damaged. The more capacity an amp has wattage rating. the easier it is on speakers. Most speakers are damaged by underpowered amps being clipped rrather that too high of amp reting.

Apr 22, 2009 | Car Audio & Video

1 Answer

My amp automatically turns over to protect when powered


Disconnect all of the speakers and see if it does the same thing. If it does come on, you will need to check all of your speaker wire as well as the speakers. If it still goes into protect, I'm afraid to say that there is a short in one or more of the output or driver stages of the amp. Unless you know how to trouble shoot solid state printed circuit boards down to the component level, you will need to have the amp look at by a pro. Good Luck

Feb 15, 2008 | Blitz BZA2160 Car Audio Amplifier

1 Answer

Amp going into protect mode


If you set the gain too high on the AMP, at loud volume levels some clipping or distortion of the output signal will occur. Most amps have a Circuit inside that detects this clipping or distortion and applies protection to prevent damage to the speakers and the amp. It would help to know if you are driving the speakers with a Line level output or using the speaker output from your deck. There are many things that can cause an amp to go into protect mode, and knowing a little more about your setup will help to solve the problem.

Nov 07, 2007 | Alpine PDX-4.100 Car Audio Amplifier

Not finding what you are looking for?
Crest Audio CA9 Car Audio Amplifier Logo

Related Topics:

337 people viewed this question

Ask a Question

Usually answered in minutes!

Top Crest Audio Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4869 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

yadayada
yadayada

Level 3 Expert

76630 Answers

Are you a Crest Audio Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...