This
auction is for an excellent pair of Pioneer 10", 25-730-A woofers. These woofers
will fit and work perfectly in 1st generation HPM-40 or HPM-60
systems. With minor cabinet modifications, they will also work in the later
version HPM-40 and HPM-60 systems. The cones and newly replaced dust caps are
absolutely pristine. The polyether foam surrounds were replaced about 5 years
ago and coated with foam preservative from SimplySpeakers.com. This treatment
greatly extends the life of foam surrounds, while retaining the high compliance
need for a very low resonance. The tint added to the otherwise drab brown cones
was to make them match my JBL-112 systems in a 4-speaker stack. There are no
buzzes, rattles or any sign of misaligned voice coils. The DC voice coil resistance measures 5.6 and
5.8 Ohms, respectively. The free-air resonance measures 29Hz on both woofers.
These drivers are functionally mint. I recently pulled them from my pair of
HPM-40 systems. The frames are 275mm (10.75”) in diameter. The mounting holes
are 254mm (10.0”) across the frame. I must remind the prospective buyer that I am not a
business, just a devoted audio-geek with 40 years of experience in audio repair
& modifications, who can't stand to see these old gems in a landfill! Check my feedback, please.
I will only ship to the United States and Canada. The winning bidder MUST HAVE a US or Canadien shipping address.