I just received twin EP-350 V3 subs. They replace my older EP-175 and I'm using them with M22's and tube amplification.

They sound great. I had to set them up reverse phase (which I thought unusual, as they are set up next to my mains), this has been confirmed by low bass test tones.

My question is this: After I start a record or CD, the Subs wake-up and the pilot light goes green. However, the subs seem to take a minute or so to warm up and actually turn on. If I put my ear next to the driver, I can hear a faint mechanical noise. ??

I assume this is normal as both subs behave the same way. I can't imagine both behaving abnormally. Is a voice coil warming up? Is there enough voltage to wake up but not really get going? I can force them on it seems by raising the volume for a few seconds or using a small battery to the leads. With the old EP-175, once they went green, they were "on"

Anyone experience this?

Thanks

Dave