Question about Crest Audio CPX-900 Amplifier

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No power have a vs900 crest amp look like somebody drop the amp while they was shipping it to me.amp has no power now,is it something a can look for or do it needs to be repair at a crest repair shop?

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  • poor31 Jan 14, 2009

    Thanks Dan,I took the top off and look in side,I saw that a plug come loose,put it back and power it up 'come on"

  • Extremesound Cape Town
    Extremesound Cape Town Nov 12, 2016

    PLEASE HIGHLIGHT LINK BELOW THAT WILL TAKE YOU THE SERVICE MANUAL ....http://elektrotanya.com/crest-audio_ca_s...

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These amps are very compact and are not the easiest to work on. If you are not experienced at repair, I would not recommend you start here. Where are you located?

Dan

Posted on Jan 14, 2009

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2 Answers

Crest audio cpx1500, one channel not working ,


The breaker is stuck because there's some internal circuit problem on the amp. Something is tripping it i.e. a wiring short or blown speaker driver if they're connected, or an output transistor has blown.

Fix the problem BEFORE trying to reset.

Switch all off. Disconnect your speakers from the power amp. Switch the amp back on. If it will reset now then you have a wiring or speaker issue. If it won't reset then the problem is something broke in the amp.

Transistors are part of the circuit board. They're soldered in and also bolted to heat sinks. Not a DIY fix unless you know what you're doing. Take the amp to a repair shop.

Sep 04, 2014 | Audio Players & Recorders

1 Answer

Crest audio cpx 1500 , one channel stop working ,


The breaker is stuck because there's some internal circuit problem on the amp. Something is tripping it i.e. a wiring short or blown speaker driver if they're connected, or an output transistor has blown.

Fix the problem BEFORE trying to reset.

Switch all off. Disconnect your speakers from the power amp. Switch the amp back on. If it will reset now then you have a wiring or speaker issue. If it won't reset then the problem is something broke in the amp.

Transistors are part of the circuit board. They're soldered in and also bolted to heat sinks. Not a DIY fix unless you know what you're doing. Take the amp to a repair shop.

Sep 04, 2014 | Audio Players & Recorders

1 Answer

I have a Crest Audio V900, a set of Bose 901, a Gemini EQ-3000. Do I need a PREAMP? Or can I hook up the Crest AMP to the Equalizer?


You could use the EQ but it won;t sound as good as it will with a pre amp and also could make it a bit trickier when adjusting the volume and getting it to sound right.

Mar 10, 2012 | Crest Audio Audio Players & Recorders

1 Answer

Smoke comes out from the switch and wont turn on ... there 2 amps make of ca9 and ca6 wondering if you guys can help


This is a very easy cheap fix, but since this thread is pretty old first make contact to help you out with this issue, common on CA series power amplifiers of Crest Audio.

Aug 12, 2011 | Crest Audio CA 9 2Channel Amplifier

1 Answer

I have a crest 901 and the banana plgs will not insert into the amp. I bought it from a guy on ebay and paid for shipping and insurance. i am afraid that aaaaI got messed over. the amp was not insured, but...


Find a local music store that sells power amps and see if they know a tech who can look at it. If the banana jacks are whacked , theyre easy to replace

Nov 30, 2010 | Crest Audio CPX-900 Amplifier

1 Answer

How to activate 70v line of crest audio cki 800v


First of all the 70 volt line is used when we are dragging long lengths of speaker wires. hence to counter the drop we use a high voltage line brring it further down without any remarkable drop and use a step down matching transformer to power the speaker according to the impedance of the speaker to the secondary of the transformer. Connect the 70 volt to the 70 volt output in the amplifier. Now connect the other end of the wires tto the primary of the 70 volt transformer. Use the secondary output to connect to the speaker using the tap most suitable..2, 4,6,8 ohms . Check the phasing when you connect or reverse if the bass quality is less.
Hope this helps. Good day

Jun 29, 2010 | Crest Audio CKi 800v Amplifier

1 Answer

Why my crest audio ca6 has the lights clip signal


disconnect you load (speakers) power amp up. If this fault persists there might be a problemm with the amp

Apr 21, 2010 | Crest Audio CA9 Car Audio Amplifier

2 Answers

Every time I turn the amp on it shuts its self off.


disconnect all speakers and test if the problem corrected you will have a problem in your speakers(either wire or speaker itself)-try to connect the speakers one by one until you find the bad one and change it--if all above does not work send your amp to service center near you

Mar 30, 2009 | Crest Audio CPX-900 Amplifier

1 Answer

My CA9 has protect recurrent problems.


if you are bridged in parallel instead of in series the amp wont support the load so it turns the power protect on till the amp cant handle nomore then the amp will go if you have two subs bridged run them left speaker possative to to the amp possative for bridged mode then laft speaker negative to the right speaker possative then right speaker negative to your amp negative for bridged mode if you have them left and right speaker possative to amp possative and left and right speaker neggative to your negative to your amp thats parallel the ampwont support the 2 ohm load

Feb 08, 2009 | Crest Audio CA9 Car Audio Amplifier

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