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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: 9040" data-attributes="member: 2052"><p>I recently picked up a pair of these powered 15" subs to use at small venues. And yes, you can indeed pick them up since they weigh only 56 lbs. !</p><p></p><p>Both easily stacked on the hand truck and made load-in almost pleasant. I'll generally use QSC K10s on top.</p><p></p><p>The sound from these is nice and tight, as you would expect from a 15, and there's ample punch for most any type of program material ... live or recorded.</p><p></p><p>The DuraFlex finish on the cabinet appears rugged and I really like the security of the threaded pole mount.</p><p></p><p>However ...</p><p></p><p>The noise from the cooling fan is quite excessive. At 2' from the back of the cabinet the fan noise at idle is 74 db with the droning sound of the motor resonating the cabinet at 350 Hz.</p><p></p><p> The fan noise can even be heard throughout the room along with the program material.</p><p></p><p>I just can't imagine that JBL let this go out the door without noticing.</p><p></p><p>My point of reference for quiet is: 4 QSC KW181s, 2 QSC KW153s, and 2 QSC K10s.</p><p></p><p></p><p>Has anyone else heard these subs?</p><p></p><p>Did I just get lucky and get two that slipped by QC?</p><p></p><p></p><p>- Bob</p></blockquote><p></p>
[QUOTE="Bob Harvey, post: 9040, member: 2052"] I recently picked up a pair of these powered 15" subs to use at small venues. And yes, you can indeed pick them up since they weigh only 56 lbs. ! Both easily stacked on the hand truck and made load-in almost pleasant. I'll generally use QSC K10s on top. The sound from these is nice and tight, as you would expect from a 15, and there's ample punch for most any type of program material ... live or recorded. The DuraFlex finish on the cabinet appears rugged and I really like the security of the threaded pole mount. However ... The noise from the cooling fan is quite excessive. At 2' from the back of the cabinet the fan noise at idle is 74 db with the droning sound of the motor resonating the cabinet at 350 Hz. The fan noise can even be heard throughout the room along with the program material. I just can't imagine that JBL let this go out the door without noticing. My point of reference for quiet is: 4 QSC KW181s, 2 QSC KW153s, and 2 QSC K10s. Has anyone else heard these subs? Did I just get lucky and get two that slipped by QC? - Bob [/QUOTE]
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JBL PRX715XLF Powered Subwoofer - Excessive Fan Noise
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