Thank you to our Sponsors
I bought a pair of used Beovox MC120.2 speakers for £30 not knowing what I was getting myself into... seemed like a good price - speakers 'look' amazing (but a bit tatty to be honest) - hooked them up and NO BASS?
So that's no bass from either loudspeaker - sound is coming out of the treble and mid-range, so what's going on here? Do I need to somehow get into the speakers and sort this out?
Picture:
If the Bass drivers pass the "push test", Change the electrolytic capacitors in the crossovers, check the other components, clean all connections for oxidation.
Location: Mexico city
The drivers do pass the push test OK. I cleaned the connections to the bass driver using deoxit D5 - don't forget the treble and midrange units work. fine.
I've put a meter across the terminals of the bass driver and not getting any reading - I guess that means open circuit and a shot bass unit.
Both speakers have the same problem.
Can the bass units be reconditioned - the magnet is etched with X820415
Difficult repair.
Under the dustcap the thin copper leads that run from where they meet up with the flexwires to the voicecoil gets eaten away by the
glue used to secure the voicecoil former to the cone.
Careful drilling, heating and cutting into the glue, close up to the coil former will often uncover a tiny piece of lead that a fresh piece
of lead can be soldered onto.
Close to the wire I use a dedicated (cheap) soldering iron to melt away the glue without risking damage to the thin leads.
Martin
OK a better question perhaps - can I send the bass units off somewhere to get them professionally repaired? Seems a shame to replace them with another set of woofers that may never be as good as the originals.
Funny how both these speakers suffered the same problem.
You must be logged in as a BeoWorld member to post replies to forum threads.
Register to access the forums, reference material, and exclusive member benefits — including our monthly prize draw.
Become a Member