At what kind of temperature does the coating on a subs coil begin to melt and cause "that smell"?.I assume its very from driver to driver but is there a rough idea of how much heat it takes.I`ve been thinking of rigging up a temp gauge to monitor this?

I cant see how a temp gauge would work?

The coils are inside the magnet and as such are not really accesible to a thermocouple.

If the sub/amp combination is set up correctly and you dont run it flat out for long periods you shouldnt have a problem with temps.

Ben

this was raised in another post, do the coils only smell under clip?

this was raised in another post, do the coils only smell under clip?


no only when they are too hot, its the VC glue!

yeah I know mate but I wasn't sure if the temp only gets excessive under a clipped signal, what if your over powering a sub with a clean signal wouldn't the VC still smell then

They smell when the glue/varnish melts/warms/burns

That could be clean signal, clipped signal extend play at high volumes, serious abuse at extreme volumes, over powered sealed sub so the coils have no place to vent etc.

Its not an easy answer IMO

Ben

I know my amps don't clip but I get that smell with late night tip nothing else

don't give RE HC's a clipped 5,000w signal...they smell ! oops :red:

no. dont do that.

give them a clipped 6,000 watt one instead!

I know my amps don't clip but I get that smell with late night tip nothing else

It can definitely happen... your just exceeding the thermal limits of the sub... It can be done with clean power, or with a clipped signal

On the thought of monitoring the heat being generated, its hard to do accurately, as the bit your interested in monitoring (VC's), actually sits waaaay inside the motor, and aint really accessable, even less so to mount a thermal probe in there

I'll looking to do something similar in the future though, and mount a temperature probe onto the motor structure... It won't be a completely accurate indication of coil temperature, but will give some kind of indication on how hard you've been working the sub

can you smell your H2 when you push it Rich?

I'll looking to do something similar in the future though, and mount a temperature probe onto the motor structure... It won't be a completely accurate indication of coil temperature, but will give some kind of indication on how hard you've been working the sub

Thats pretty much what I was thinking,I guess i should have been a little more specific in the initial post.I was going to use something like a HDD temp monitor from maplin.Does anyone know how far away the display can be from the probe.They come with approx 1m of cable between the two.Could this be extended or would it attribute to loss and therefore a more inaccurate reading?

Could this be extended or would it attribute to loss and therefore a more inaccurate reading?

I don't see why you couldn't extend the cable. I should think you'd get more accurate results of you can insert the probe into the rubber boot that covers part of the magnet, as many subs have

James: Yes, the H2 does smell when you push it, but you do have do give it some serious power, for quite a long time, musically... with the power I currently run, it takes about 10 minutes of hard use to get the motor even a little warm to to the touch, then another 10 on top of that, and the glue starts to smell a little, but after the first time or two, I don;t push it that far any more, no need to... we're talking about playing SERIOUSLY loud for quite a long time there, waaaaay above daily driving levels. The H2 is pretty funky, when the magnet warms up, as does the spokes of the chassis, as they draw the heat away, and dissipate it