RaiderJ, I know about that problem. It exists if you have the older ProMedia v.2-400s. JK16 and jamesbond007 know what I'm talking about. I've owned all the surround sound ProMedia models (that means the PM v.2-400s, 4.1, and the 5.1). The first generation v.2-400s seemed to have that hiss problem caused by a faulty premamp--Klipsch replaced all effected models no questions asked. My 4.1 and 5.1 speakers has absolutely ZERO hiss. The 5.1s seem to have an audible "weird" sound--it's very low in volume and I would describe it as the sound you would hear if you were listening to a record and move the read needle across the record and pick the needle up as well...you know that "weeerrr" sound. It's kinda silly but I also think that it has something to do with the amplifier going into a low power mode. It seems to be normal--the engineers supposedly made the 5.1s like that--according to the Klipsch ProMedia tech-->Amy.
HouRman, no, I have never tried stacking the subs on top of one another. I'm not sure if that's even a good idea...I would wonder if there would be some interference caused by having to unshielded devices directly on one another. Anyway, since subs send sound in a unidirectional manner, I think it's probably optimal to have them placed in the corners...the front very close to my front speakers, close to a corner wall and very close to my physcial listening position. The 2nd sub in the "caddy-corner" also close to a corner wall.
Also, I've tested my subs and turned one on at a time and both on together...The 4.1 sub literally gets drowned out by the 5.1 sub. I think it's pretty hillarious since I always believed my 4.1 sub to be very powerful and unbelievable. Oh well...I guess 2 dual firing 8" drivers make that much of a difference. Klipsch says the 5.1 sub is equivalent to a traditional front-firing 12" HT sub whereas the 4.1 sub is equal to an HT 10" sub.
junthin, I currently am using the Creative SoundBlaster Audigy Platinum card. my center channel is connected to the soundcard's center/digital output, the stereo output and surround output have 1/8" Y-adaptors attached to them. From there, I just connected my 5.1 and 4.1s accordingly.
When using Cyberlink's PowerDVD XP 4.0 Deluxe, I will actually get the DolbyDigital/THX Surround EX surround sound...the "center rear" speakers are just the rear left and rear right channels matrixized. I have always connected 8 speakers to my sound cards. The first being the Live! 5.1, then the Santa Cruz, then the GTXP, and now the Audigy. If you need some suggestions on how to accomplish this, let me know.
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