Hi i need some help on what could be the problem with my speaker. when i turn it on the copper rounded coil gets very hot so quick ? is the problem on the power board or is it the copper coil ?? they have a 110 -230 switch on the back an i think that someone my have turned it on to 110 ? would do it if so what do i need to fix any help woul be great thank you for your time... mike
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Looks like the woofer is a 4" Polyplas shielded driver, part #NS-W4SS, 4 ohms. If JBL can't supply a replacement try looking at Madisound or Partsexpress. Find a 4" 4 ohm woofer or mid-bass driver with a round frame. Check the actual measurements against your driver because not all "4 inch" drivers are the same size or bolt pattern. Make sure the depth will fit. You don't need "shielded" unless the speakers will be right up against a CRT (and nobody uses CRTs these days). Get a pair and replace both because the new driver certainly won't match the old.
The oily coating you see is a damping compound applied by the company to make the sound smooth and less edgy or harsh.Cheaper speakers most of the time sound bright and progressing on to a Hi Fi speakers take time getting used to.In the long run you will realize you will get lesser ear fatigue listening to good Hi Fi speakers . One test to confirm if the tweeters are working all right is to play a blank FM channel with the FM mute released ( FM mode on Mono ). Turn up the Amplifier volume and you will hear a loud hiss ( like standing next to a waterfall ). Turn the balance control towards each speaker and see if they sound identical. Next remove the grill and cup the dome tweeter with your hand with out touching the dome itself to block the hi frequency sound, it should sound dull. And when you remove your hand should sound hissy and sharp.Try to do this with the balance control turned towards your speaker. Sound is very subjective and personnel like taste, don't let anybody talk you into deciding which is better for you.
Speakers are working OK otherwise?
Do you get sound from headphone jack?
It's probably some pot control not turned up.
Is MAIN OUT turned up
Are speakers connected to monitor out or main out.?
Is gain for mic turned up?
Is there a MAIN OUT switch (on/off)?
Is there a MUTE control on the board?