|Pioneer HPM 150 / 1500 Speaker|
Compared to the HPM 100, Pioneer´s standard HPM speaker, the bigger HPM 150 is of significantly higher quality, with a bigger woofer (15 ¾ inch) and the typical omnidirectional super-tweeter, which can be found on top of each speaker.
The tweeter and midrange speaker in the front of the speaker look (nearly) identical to the ones of the HPM 100, but are actually different parts. While the HPM 100 had to cope with distortions at higher volumes, the 150 seems to be immune against distortions at nearly any volume. As this speaker was Pioneer´s high-end household speaker, it is very difficult to find a pair of these on garage sales for little money. However, as the foam was of mediocre quality it is possible to find an HPM 150 for a decent price that just has to be refoamed.
You found this speaker? Clean it!
We frequently receive images of old, dusty speakers that some lucky owner found in his or her garage after decades of storage. Others purchased an old set of speakers for little money at a garage sale. Our advice: Don´t let them deteriorate, but also don´t scratch them with the wrong tools.
Instead: Clean them carefully. Get a set of soft brushes and other cleaning utensils. If the wooden speaker cabinets look dull or out of color (e.g. due to sunlight), give the wood some new life:
1. wipe off the dust . 2. take a very fine sandpaper (1000 Grit and finer) and to sand down the wood. 3. Use an oil finish, ideally "natural" to maintain the original wood color, such as Tried and True danish Oil.
The HPM 150 (HPM 1500) is a great speaker and should be refoamed, if necessary. Foam surrounds might have dry rotted or been punctured over the years. A refoaming kit can usually be bought for around $30-40 and replacing old foams will take around 1 to 2 hours. It does not require any particular skill, just a calm hand and a little patience. We tried out several available foams and recommend to use Parts Express´ 15 inch Surround Kit. You can find it in our Store or directly at amazon.com below.
Pioneer HPM 150 / HPM 1500 Specs:
Drivers : 40cm woofer, 10cm mid cone, 4,5cm high-mid cone, Omni-directional horn-loaded High-Polymer Film
Repartee : 750Hz 2,6Khz 8 ,5Khz
Frequency response : 25Hz...40Khz
SPL : 92,5dB/W/m
Minimum power : 10W
Maximum power : 250W
Nominal impedance : 6,3 Ohm
Dimensions: 45 x 98,45 x 45cm
Weight : 37,3kg.
HPM 150 Price: $1100-1600
(Depending on overall condition)
Pioneer HPM-150 / 1500 Service Manual Link by Elektrotanya.com