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Clarion DRZ9255 & Zapco Studio amps

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Old 12-03-2009, 11:38 AM
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Rob
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Question Clarion DRZ9255 & Zapco Studio amps

I called Clarion and they said that the zapco studio may not accept the 8V line out from the drz9255.
Someone on the DIYMA forums also told me that it creates noise.

I read this on the owners manual of the studio 500
http://www.zapco.com/prod/pdf/studio500.pdf




Does that mean it can only handle a 5v line out ?
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Old 12-03-2009, 05:03 PM
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email zapco - they usually respond in 24hrs
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Old 12-03-2009, 05:05 PM
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Originally Posted by avidedtr
email zapco - they usually respond in 24hrs
Already did..


I contacted Robert Rugani at zapco..

This is what he says about the studio series amps and also the compatibility with the drz9255 via emails:

Those amps and the Z series we are just starting to see come in for repair with leaky caps. So you may want to be aware of that. Other than that they are great little amps and would do fine for a small system

Should be fine. The Studio amps need to have a singnal ref ground from the head unit to the amp.

Your head unit is not putting out 8 volts all the time. It is probably only putting out 8 volts with the volume turned all the way up. Yes the maximum voltage input on the studio is 5v. Your listening level will be well within range of the output voltage you will actually be getting.

The guy on DIY that told you it would create noise I am not sure what he is talking about. Either you misunderstood him or he does not know what he is talking about. You should not have a noise problem with running a high voltage into an amplifier. If anything your noise floor will be lower. The amplifier, any amplifier, is the nosiest part of the system. The idea of running higher voltage in allows you to run the gain on the amp lower which in turn give you the cleanest signal possible


If you are really worried about it measure the output voltage of your 9255. See what the voltage output actually is and at what point it is putting out the 5 volts. If nothing else you will know that is your maximum input to the amplifier is at. Unless the amplifier has problems already the only thing that will happen is you will overdrive the input cause the input of the amplifier to clip. Overdriving the input of the amp will not damage it…..unless there is already something wrong with it.
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Old 12-03-2009, 05:16 PM
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Time to take a power supply out with some test tones and go at it. I highly doubt you will see more then 5V output on music - probably close to 8V with test tones.
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Old 12-03-2009, 05:21 PM
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I have not yet bought any zapco amps.. thats why Im asking.
Should I not get an amp that can accept 8V input sensitivity ?
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Old 12-03-2009, 05:31 PM
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Originally Posted by Rob
I have not yet bought any zapco amps.. thats why Im asking.
Should I not get an amp that can accept 8V input sensitivity ?

Rob - go get a volt meter and test the outputs with test tones and music at 98% volume and you'll be able to answer your question with confidence.
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Old 12-03-2009, 05:37 PM
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Originally Posted by avidedtr
Rob - go get a volt meter and test the outputs with test tones and music at 98% volume and you'll be able to answer your question with confidence.
My car is stored since october..
Im doing some homework now for the spring.
I am by no means a car audio tester...LoL
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Old 12-03-2009, 05:42 PM
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line output level with cd 1 khz
Vol 0 dB = 4v
Vol +6 = 8V (Max)

There is your answer - It's compatible! If you don't go past 0 but that's on a 1khz tone. If you're like me, I listen to music. Music is NOT consistent in amplitude. So I wouldn't worry about it.
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