hey guys,
i plugged in my dad's subwoofer and it seems to make a loud thump when it is turned on/off.
why is this happening? how do i eliminate this?
if i continue using the sub as is, will i risk damaging the sub if i'm unable to eliminate the problem?
any help will be much appreciated.
Sachi
i plugged in my dad's subwoofer and it seems to make a loud thump when it is turned on/off.
why is this happening? how do i eliminate this?
if i continue using the sub as is, will i risk damaging the sub if i'm unable to eliminate the problem?
any help will be much appreciated.
Sachi
The problem is in the amplifier.If u'r amplifier is supplied with differential voltage( +/- , gnd),due to the the filtering capacitors(there is allways differences between them as a value),when u turn it on, it gives a voltage peek that can blow your speaker.What can u do? U can build a speaker protection that connects your speaker 5-10 secondslater from the moment u power it up.
Hi Sachi
You can buy a kit from Maplin which has relays connecting the speaker/s and provides a switch on delay of a few seconds. If I recall it also continuously senses for a dc voltage across the speaker (indicative of an amp failure) and will disconnect the speaker/s in this event.
I don't know if there's a Maplin in your area - their main website may have this info and will have some details of the kit.
Hope this helps
John Hope
You can buy a kit from Maplin which has relays connecting the speaker/s and provides a switch on delay of a few seconds. If I recall it also continuously senses for a dc voltage across the speaker (indicative of an amp failure) and will disconnect the speaker/s in this event.
I don't know if there's a Maplin in your area - their main website may have this info and will have some details of the kit.
Hope this helps
John Hope
if it is just a sub i would not worry. most subs can handle quite bit of power for the 5-10ms that the thump is there for. if it is a fullrange speaker the Xo should protect the mid and tweeter if not the tweeter or mid could blow. i suppose the thump is audible but not loud.
hey Navin,
its just a sub. its a deftech Prosub100Tl. i wrote to the manufactuerer and he says that it is normal for the sub to make that thump when turned on/off due to the signal sensing circuit which causes the thump when a transient occurs.
it is audible but not loud.
so i guess, that takes care of that.
thanks anyways guys.
Sachi
its just a sub. its a deftech Prosub100Tl. i wrote to the manufactuerer and he says that it is normal for the sub to make that thump when turned on/off due to the signal sensing circuit which causes the thump when a transient occurs.
it is audible but not loud.
so i guess, that takes care of that.
thanks anyways guys.
Sachi
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