Hello,
I'm having issues with my Kef Kube 8b and wonder if anyone could help?
In my Onkyo txnr 737 receiver I have my crossovers set to 80hz for my Left, right and Centre the other speakers are set to 120hz. LFE set to 120hz
i have ran the automatic calibration and have gone back to the speaker calibration and checked the pink noise and corrected to 79db (auto calibration every time sets my L&R speakers to 74db the reset are not far off 80db) i've been generous and and set my sub to 81db using my SPL meter weighted to C.
On the sub panel i have the crossover set all the way to 140hz/LFE, Volume at 12 O'clock, 0' phase and the EQ is set to In Room (other options are In cabinet or In Corner)
Single sub setup. (i have been thinking about getting another one)
Room size is around 170 square foot (encase that helps in some way)
I normally listen to films at -30 to -25 on the receiver volume.
I sometimes get and what i can best describe as a popping sound during really deep rumbling bass scene from my sub. A good example where i here popping sounds is the film Ready Player One during the scene near the end where Sorrento activates the grenade devise sending out a shock wave which wipes out all the players in the game apart from Parzival. (which I counted around 10 pops) TBH I don't normally here popping sounds when watching films that i have noticed.
So i have done some troubleshooting. I disconnected all my speakers apart from my sub and replayed the same scene from Ready Player One over and over while decreasing the sub gain in the AV to where the popping stops. Which then reads around 73db on the SLP meter when listening to pink noise. I also play Played the Film Midway (2019) and Blade Runner 2049 while set to 82db in pink and skipped to the bass scenes throughout the films and don't get any pops.
So do i set the pink noise to 72db or leave it around 82db and just put up with the popping if and when it happens, anything that i could do to help stop this, is the sub possibly faulty or just need a better sub?
Any advise would be great.
Kef Kube 8b Specs:
WEIGHT
11.3kg
DIMENSIONS
(with Rear panel and feet / H x W x D)
293 x 293 x 310mm (11.5 x 11.5 x 12.2in.)
DESIGN
Powered Subwoofer (sealed)
POWER REQUIREMENTS
100V - 120V / 220V - 240V ~ 50 / 60Hz
UNIT MEASUREMENT
Piece
VARIABLE LOW PASS FILTER
40Hz - 140Hz & LFE
FREQUENCY RESPONSE
34 to 140Hz (-6dB)
MAXIMUM OUTPUT
105dB
AMPLIFIER POWER
300 Watts RMS
AMPLIFIER TYPE
Built-in Class-D
DRIVE UNITS
1 x 200mm (8in.)
INPUTS
RCA phono sockets Speaker level inputs
ANALOGUE INPUT
RCA phono sockets Speaker level inputs
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