HI, I have buyed the fantastic 587 but one speaker do not function do not sound and make big scracht!!!!!!!!!!!!!
What is the problem???????
Please help me.
Many thanks.
Luciano.
That is too sad for you. It is very difficult to say what is wrong. Is the speaker doing that direct from switching it on or after you make a connection to the preamp?
You have no sound at all?
Meglio di andare a un uomo technico per guardarle. La sceda technica chi trova qui
Po essere il alimentazione, il regolatore o il relais. é difficile constatere cosa va male.
@Zapper wrote:
That is too sad for you. It is very difficult to say what is wrong. Is the speaker doing that direct from switching it on or after you make a connection to the preamp?
You have no sound at all?
Meglio di andare a un uomo technico per guardarle. La sceda technica chi trova qui
Po essere il alimentazione, il regolatore o il relais. é difficile constatere cosa va male.
Hi thanks for the answer.
Sono andato dal tecnico e mi ha detto che sono i finali!!!!!!!!!
Ma io non sono convinto.
L'altoparlante fa questo forte rumore quando lo colleghi al pre-amp aut.
Fa solo rumore big hummm and scracth e niente suono!!!!!!!
Grazie.
Luciano.
So the tweeter works but gives only hum when connecting a preamp. That looks like a supply problem, or some loose ground-connection.
or perhaps some bad capacitors, i´ve had a mid failure due to a capacitor that dropped it´s value to almost zero. may very well be that this can apply for the tweeter as well.
Is the mid speaker ok? i've also had one where the coil wire was broken.
I've had a woofer with strange effects, violent movement due to a bad transistor, the one directly after the MFB pick-up element.
Bad relay contacts are also suspect, try knocking quite hard on the top of the housing or backplane and listen if anything changes
There is the possibility that the wiring isn't quite ok, you could loosen the backplane and move the wiring somewhat by hand. if there is a problem you would be able to hear it by the scratcing sound of the speakers.
You could also solder al the wirewrap points just to be sure.
@Remi wrote:
or perhaps some bad capacitors, i´ve had a mid failure due to a capacitor that dropped it´s value to almost zero. may very well be that this can apply for the tweeter as well.
Is the mid speaker ok? i've also had one where the coil wire was broken.
I've had a woofer with strange effects, violent movement due to a bad transistor, the one directly after the MFB pick-up element.Bad relay contacts are also suspect, try knocking quite hard on the top of the housing or backplane and listen if anything changes
There is the possibility that the wiring isn't quite ok, you could loosen the backplane and move the wiring somewhat by hand. if there is a problem you would be able to hear it by the scratcing sound of the speakers.
You could also solder al the wirewrap points just to be sure.
The tecnician said to me that the bad capacitors have created the demage to the two ends and perhaps also the preamp!!!!!!!!!
Is possible?????
Many thanks.
Luciano.
Bad capacitors in the 587 will not lead to any further damage.
