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Concept Amp Owners

Old 12-10-2004, 01:24 AM
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Anyone else out there own a concept audio amp? I get very conflicting results on the input sensitivity of the cc- series. The manual says 8v but all the online stuff says 4v. Anyone actually metered it?
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Old 12-10-2004, 02:10 AM
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of course it matters... for matching sensitivity input to my deck which in 2.5v
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Old 12-10-2004, 03:02 AM
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Use this ...

http://www.jlaudio.com/tutorials/Inp...nsitivity.html

http://www.teamtreo.com/view.php?showme=Free_Test_Tones

4 ohms stereo = 13.4 volts per channel
2 ohms stereo = 11.8 volts per channel
4 ohms bridged = 24.5 volts
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Old 12-10-2004, 08:06 AM
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I have two CCA-752s. I can't really say I've given a rip as to what the input to the amp was. I just tune my gains by ear. I start off with them at the 1/2 way mark.
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Old 12-10-2004, 11:54 AM
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The higher the output voltage of the deck, the lower the gain setting on the amp. This is a good thing. Next consider that your cd player might make 2.5v if it's going downhill with the wind blowing it along. The output on that cd player will clip long before you get 2.5 volts. Meaning this will throw a distorted signal into the amp and then passed onto the speakers.

We have commonly used Concept amplifiers driven by the Eclipse 8v non - clipping variety and had zero issues at all.

[ December 10, 2004, 02:32 PM: Message edited by: MR2NR ]
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Old 12-10-2004, 12:20 PM
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"The output on that cd player will clip long before you get 2.5 volts"

what does that mean? As I raise the vol/power on the deck the rca voltage changes?
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Old 12-10-2004, 01:03 PM
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yes the rca voltage changes as u increae the volume on the deck, why else do u think it gets louder/queter? increased and decreased INPUT voltage, hence the name INPUT sensitivity.

and as to the intpu sensitivity on the conept amp that doesnt matter at all with a 2.5v deck. like stated before, your deck will clip long before reaching 2.5volts

all u have to do to set it all is matching the gain on the amp to the volume on your deck to how u like it.

[ December 10, 2004, 02:05 PM: Message edited by: Father Yuli ]
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Old 12-10-2004, 01:34 PM
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Yuli nailed it basically, as the volume goes up, so does the voltage, up to a point until it clips and does not provide a clean signal to be amplified.
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