2. speakers
  3. 1431898666

JL Audio F110 Loud pop when pc unplugged ?

Both my F110 generates a really loud pop when the power cord is unplugged with the front power switch in the OFF position. Preamp in OFF position also.
Also loud pop occurs in the event of a power failure.
This sound is really scary.
Powering up seems OK, no loud pop.

If anyone has notice this, is there a way to fix ?
128x128terryakhan

Showing 2 responses by terryakhan

terryakhan's avatar
terryakhan OP
109 posts
 
I like to thank you all for your responses.

Whenever I planned to do some work with the subs, I turn off the front ON/OFF switch overnight allowing the caps to discharge.

I had to unplug the power cords a few time because of re-postion and pc replacement.

An IEC to each sub. Balanced feed and no slave. The subs are powered down before I unplug the pc and volume setting does not make any difference.

My next test is to allow the discharge time for 40-50 hours before unplugging, perhaps overnight is not long enough.
I will post the results.
terryakhan's avatar
terryakhan OP
109 posts
 
Plate amps had a malfunction and after replacement the problem has disappeared.
I am very lucky because there is a JL service depot is in my area and replacement covered under warranty.
I did the work myself because if the high gloss finish should get damaged I am the one to be blamed.
Thank you.
More to discover