My sub started to hum, I noticed that the female RCA terminal was loose and if i position it a certain way it would sound correct. repair should be a walk in a park, just remove the plate amp, solder or glue the RCA connector poof, job done.... until you noticed that the back side of the RCA connector is covered with a black plastic box
Why is there a need to enclose the backside of the RCA ?
Any ideas what to do next, should I remove the box ?
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Why is there a need to enclose the backside of the RCA ?
Any ideas what to do next, should I remove the box ?
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It is possible to install the RCA on an empty place of the plate. Drill. Install. Connect with shielded wire (twisted pair). But it's up to you 🙂
Quote - "why is there a need to enclose the backside of the RCA ? "
There could be several reasons -
1-to make sure the repair is carried out by the company--
2- the inside of the box is copper powdered lined for screening purposes -
3-circuit design exclusivity-
4-to stop either electric shock or static sensitive components exist (to stop you "zapping" them ) .
There could be more reasons --like the firmware module is inside but they certainly don't want you opening it --just look at the glue --which looks a bit cheaply done to me --very amateurish !
There could be several reasons -
1-to make sure the repair is carried out by the company--
2- the inside of the box is copper powdered lined for screening purposes -
3-circuit design exclusivity-
4-to stop either electric shock or static sensitive components exist (to stop you "zapping" them ) .
There could be more reasons --like the firmware module is inside but they certainly don't want you opening it --just look at the glue --which looks a bit cheaply done to me --very amateurish !
Sealing any air-leaks to prevent whistling through the RCA and/or front plate connectors.
I've seen it done on lots of equipment.
I've seen it done on lots of equipment.
^^^^^ quite possible.
Those might not be plain RCA but some version soldered straight to a small PCB inside that box.
but ....
maybe the problem is not even a soldering one and you don´t really need access to the inside of the box.
The internal RCA contact which is a hollow tube with a slit on a side may very well have expanded and lost tension,you may close it somewhat with a thickish sewing needle.
That is done all the time with tube sockets.
Try it.
Those might not be plain RCA but some version soldered straight to a small PCB inside that box.
but ....
maybe the problem is not even a soldering one and you don´t really need access to the inside of the box.
The internal RCA contact which is a hollow tube with a slit on a side may very well have expanded and lost tension,you may close it somewhat with a thickish sewing needle.
That is done all the time with tube sockets.
Try it.