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Junior Varsity
JBL PRX715XLF Powered Subwoofer - Excessive Fan Noise
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<blockquote data-quote="Bob Harvey" data-source="post: 107806" data-attributes="member: 2052"><p>Re: JBL PRX715XLF Powered Subwoofer - No Audio at Low Level</p><p></p><p>I noticed another annoyance this week.</p><p></p><p>At low program levels the subs will go into an idle or sleep mode and shut off the audio.</p><p></p><p> I'm using QSC K10 tops and they don't demonstrate this at the same program level.</p><p></p><p>At first I thought the power to the subs had gone off. Then, I noticed that the program indicator light on the front had switched to red indicating no audio present.</p><p></p><p>I spoke with "Sam" at JBL tech support and asked if there was a trim pot adjustment for this. He said it was controlled by the DSP chip and not adjustable.</p><p></p><p>Apparently, the DSP threshold is set too high and is telling the amp to enter standby mode even when audio is still present.</p><p></p><p>This really makes it challenging to provide low level sound reinforcement for certain dinner club environments where background audio is required prior to the band playing.</p></blockquote><p></p>
[QUOTE="Bob Harvey, post: 107806, member: 2052"] Re: JBL PRX715XLF Powered Subwoofer - No Audio at Low Level I noticed another annoyance this week. At low program levels the subs will go into an idle or sleep mode and shut off the audio. I'm using QSC K10 tops and they don't demonstrate this at the same program level. At first I thought the power to the subs had gone off. Then, I noticed that the program indicator light on the front had switched to red indicating no audio present. I spoke with "Sam" at JBL tech support and asked if there was a trim pot adjustment for this. He said it was controlled by the DSP chip and not adjustable. Apparently, the DSP threshold is set too high and is telling the amp to enter standby mode even when audio is still present. This really makes it challenging to provide low level sound reinforcement for certain dinner club environments where background audio is required prior to the band playing. [/QUOTE]
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JBL PRX715XLF Powered Subwoofer - Excessive Fan Noise
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