Question about KEF Audio Cresta 2 Speaker

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How to test your speaker

I have a maddenning problem with my 5.1 home theater system. The deneon 1601 yes its a little old, am goes into auto protect mode occasionally and now its gone into auto protect at all times . It was connected to KEF Cresta 1s, cresta2, kef centre and PSW100 . When i took the amp into deneon in the uk, they found no fault and said it could be a speaker problem. I took the speakers to the KEF dealer and they coudlnt kind anything wrong with the speakers. I am now aiming to change the amp to a denon 3805 but dont want to risk blowing it if the spakers are to blame. |Is there any way to test the spaekers at home before i go and buy a new amp? i an not very techie

Posted by rohan joshi on

  • RH0723 Feb 23, 2008

    I HAVE A DENON 2801 ,WHEN I PLAY IT A LITTLE LOUD THE UNIT SHUTS DOWN SENT IT BACK TO THE FACTORY THE SAID THEY FOUND NO PROBLEM .ANY IDEAS? THANKS RON

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4 Answers

Ty Keller

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Units going into auto protect are usally due to open or dead short conditions to keep the system protected from blowing the final amps. based on what you suggested I woould test or change out the cables 1st.

Posted on Jan 19, 2007

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sonee2004

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Sir , can u tell me how can i measure the exact impedence of my speakers coneected with my amplifer so that i acn get the best soound quality? pl. tll the method for any model.so i m not writing the name of amplifer.

e-mail id :- [email protected]
[email protected]

Posted on Jun 11, 2008

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Anonymous

Sir , can u tell me how can i measure the exact impedence of my speakers coneected with my amplifer so that i acn get the best soound quality? pl. tll the method for any model.so i m not writing the name of amplifer.

e-mail id :- [email protected]
[email protected]

Posted on Jun 11, 2008

Anonymous

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If the wire is bear ( no port connections ) then you should be able to try the speakers on most stereo systems. If you have not got the right connections on the back of you stereo then ask a friend if you could try it on there?s. But if the wires have got port connections the only way you can test them is if you can unplug your amp and still have the other speakers on. If your going to get a new amp then why not get some new speakers to go with it.

Posted on Aug 24, 2006

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My samsung ht-x30 shuts down after 5 secs and displays protection

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disconnect all the speaker connections, and switch ON the set only, and see whether any protection function energizes or not. If yes, the fault is with the amp itself, and most likely to some damge of components in the output circuit section of the amp. If the amp does not show any protection, when all the speakers are disconnected, make sure that, any one amoung the speakers be the cause of this problem. Connect one after an other and find out which one causes protection circuit to energize. OK.
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I get a PROTECTION message on my system. What is

the unit goes into auto protection mode whenever there is a shorted pair of speaker wires. check all the connections carefully to make sure no wires are touching any others on the back of the main unit and at each speaker
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New System Just out of the Box and the very first time I turn it on it checks for all the DVD's and then "Protector Puch power" Message. I check all the wires and Not sure how to do test tone as every time...

Straight to power protect mode indicates crossed wires somewhere or otherwise miswired system. Disconnect all the speakers and try to power on to see if it still goes into protect mode.

If it does, read the manual for troubleshooting tips, or return the unit as defective.

If it does not then replace the speakers one by one until it returns. Check the wires going into that speaker, that speaker may be defective or you may be wiring it wrong.
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Sony home theater system started blinking protect

Protect mode will kicking whenever a fault is detected.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

Regards.




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"protect" on the screen

Protect mode will kicking whenever a fault is detected.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

Regards.
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Sony Home Theater 5 DVD changer, was dropped in transit

if you know how to open it, remove the top cover( a couple of screws on the rear) and remove two connectors, one being a ribbon cable and the other a multiple wire connector. If it still does the protect, then it is not from the dvd mechanism but a fault on the board.
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How to test your speaker

Check sub buy pushing cone in gently if you hear or feel a rasping sound the sub is blown,if not check for a fuse where the power cable goes in as this may need replaced.Also make sure you have the sub plugged into the sub pre out and not the six channel input.
PS did switch on the sub in the speaker set up in the menu?
hope this helps.
CABLE GUY.
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Home theater system hx-tx72

Protect mode will kick in whenever a fault is detected.

You get the unit not powering up, and sometimes you hear a clicking noise, that is the protection switch that keeps shutting down the unit.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.

Regards.
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