So I was tracking some bass yesterday which involved me taking my studio monitors (the mixing kind not the put your foot on while solo'ing kind) and at one point one of the monitors made a really weird noise and the tweeter went mental (the dust cover extruding really really far out).
I thought it might have been a signal issue so I turned the monitor off, unplugged the speaker cable and then turned it back on, same thing happened again but this time only for a split second and then the tweeter went completely dead. The main driver works absolutely fine.
So my question is, given that these are powered monitors is it likely that the tweeter might have been blown by a fault in the amplifier of crossover etc meaning that if I replace the tweeter the same thing will happen again?
Also any thoughts on how plausible it is to replace the tweeter and is it cost effective, these are KRK rokit 5's for reference.
I know amps prob isnt the right section for this but maybe
@ICBM or @ecc83 has some knowledge in this area?
ဈǝᴉʇsɐoʇǝsǝǝɥɔဪቌ
Comments
In which case, do not replace the tweeter - it will just blow again the next time the amp does the same thing, which it almost certainly will even if the fault isn't now permanent.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Someone else who has actually seen inside one of these could give a more accurate assessment though.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Is there anything I should watch for on the second one in case it has a similar fault, especially if it may have been caused by either moving the speaker (last few months its been in and out of car about 8 times although alwyas fitted so speakers were protected and unable to move freely) or through particularly hard use by the previous owner?
Apart from that it just seems to be pot luck really. Some designs are a bit more robust than others both physically and electrically.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Really surprised they did not put a 4.7mfd 'ish foil cap in the tweeter circuit (a non Pol' electro would do for me but you know how the 'tweaks' are!) .
I know top line stuff HAS to be all DC path but then they have servo amps to keep a zero output offset and very sophisticated protection circuits. You never read of Focal or PMC monitors going wrong.
VERY bad luck chap.
Dave.
The output I.C is meant to be protected against going D.C
There must be some other explanation for all the countless blown ones we've all changed... aliens or something probably.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Ha! Same goes for 78 series regulators. VERY reliable but not totally bombproof.
To be honest tho' IC, it is probably designers (I use the term loosely!) who use a device AT its limit to reduce cost and/or do not take into account top mains voltage possibilities?
Dave.