No KPA1500 here but I did replace the fans on my lil' ol KPA3 with Noctuas. They are noticeably quieter. If there is a suitable Noctua replacement for the KPA1500 fans you might want to compare the sound level specs to the Sanyo Denkis.

Wonder if it would be possible to build an active noise cancelling system into the rig itself; seems like it would work in that enclosed space...

73,
Drew
AF2Z



On 05/28/18 10:20, Richard Zalewski wrote:
First major contest with KPA-1500.  Overall VERY pleased.  No glitches
other than a few operator errors early in the contest.  Loving the amp.

Fan noise...another issue.  Usually for a cw contest I use some old ear
buds.  Not possible with the amp.  Had to use the total ear muffs and still
quite noisy.  Did not effect my performance but it is annoying.  I can not
imagine what it was like before they released the amp to general public
when they changed the fans...made them less noisy???  Still needs some work
but at this point probably not possible.  So looking for suggestions for
reasonably priced noise cancelling headset with mic if possible.

Hope we get full explanation of what gets changed in the next firmware
release.

Still smiling.

Richard
*W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU,
J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV


*Be joyful in hope, patient in affliction, faithful in prayer*
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