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Preamplifier for JBL loft 50

This is a discussion on Preamplifier for JBL loft 50 within the Sound Cards forums, part of the Tech Support Forum category. HI, I am reading up on stero power amplifier. I dont know if which unit will help me so I


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Old 07-30-2016, 07:02 PM   #1
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HI, I am reading up on stero power amplifier. I dont know if which unit will help me so I need to ask some questions. I have 7.1 speaker surround sound running to my Yamaha RX-v579 using Xonar DX sound card. My front two speaker pair are JBL loft 50 which are 250W each. My goal is to use your preamp attached it to my speakers (both), then connect that to my Yamaha receiver. Do I need two preamp to power my set up? is such a device compatible with my audio receiver(Yamaha RX-v579)? what kind of cable do I need to buy? lastly will your preamp work with my JBL loft 50 speakers ( wire connection and what not)?
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Old 07-30-2016, 10:13 PM   #2
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Quote:
My goal is to use your preamp attached it to my speakers (both), then connect that to my Yamaha receiver.
I expect doing so will destroy the preamp and probably the receiver also.

An audio preamplifier is used to amplify a low level signal from such devices as microphones, instrument pickups, and phonographs up to line level. The signal is then sent to the main amplifier (or receiver) for further processing.

Your Xonar card (and all pc sound cards) has a built-in preamp. It's output should be sent directly to your Yamaha receiver. Your receiver most likely also has a preamp built into its input stage for low level inputs such as above.
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Old 07-31-2016, 11:51 AM   #3
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Thx you seem knowledgeable. So I don't need a preamp, but a power amplifier? My system has 7.1. Does that mean I have to get a 7.1 channel power Amp? will that fit my speakers and my receiver? How much do they go for?
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Old 07-31-2016, 02:56 PM   #4
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You do not require a power amp either. That function is integrated in your receiver.
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Old 07-31-2016, 08:58 PM   #5
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so ur saying that I dont need a power amp after all? I thought since my two front speakers are power hungery (250 Watt ) peak then I would need an amplifer to get it to it's full potential? I have yamaha rx-v579. will that be enough to get the most out of my audio system?
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Old 08-01-2016, 01:47 AM   #6
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That's exactly what I'm saying. That peak power rating of your speakers is just that, the maximum transient level they will handle. Your receiver (80 watts continuous) will produce high transients (cymbal crashes, gun shots, explosions, etc) far above its continuous rating, and very near the peak rating of your speakers.
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