sony system

[kmlong]

I recently got a Sony DAV-HDX265 system. It sounds alright for my apartment but it lacks a little bass when playing music. The bass is deep and loud when playing movies though. I never really liked the way home theater systems sounded with music. Anyways, i bought another subwoofer on ebay. It's the exact same kind as what comes with the system. The sub is not amplified and does not have controls on it, big disadvantage but i can control the volume through the system menu. The sub is 1.5 ohms and is supposed to get 285 watts. Of course if i hook the other one up in parallel it will drop the ohms to .75 ohms and wonder if this system can handle it. I tried it and didn't seem to be any problems but was worried so i wired the two subs in series to give me 3.0 ohms instead which cuts my wattage in half, correct? This will be safer for the amp, right? I used to install car stereo's but it was years ago and remember all the sub wiring in boxes, etc. I'm pretty sure that home audio is the same concept but the ohms are odd numbers i think. The walls really rattle now even at 3 ohms and half wattage but music is still weak in bass, oh well!! Explosions are great though in movies and such. I emailed Sony and obviously the person that got back to me didn't know anything about wiring because they didn't answer my question. They just said if i add speakers they should be the same impedence (and they are) or higher. They never mentioned about wiring them in series or parallel. If anyone knows a bit more about this Sony system and how stable the amp is please let me know. thanks for anyone's help.

 

[no. 5]

Well, I don't know anything about that Sony system, but I do know it will be safer to run the subs series to present a 3 Ohm load.

I don't think doubling the impedance will half the wattage; not many amplifiers will actually "double down" (or "half up" in this case ), because although Ohm's Law demands that current increases as impedance drops (with a known Voltage) to the tune of doubling wattage with halving impedance, most amplifiers do not have the current capacity to double down.

If your bass response is lacking, it may be because the frequency range you want to hear is not being covered. Some improvement may be had by experimenting with placement, but if the system has some inherent holes in the frequency response it can sound bass shy.

 

[kmlong]

yes, bass shy sounds like a good term. It's kind of wierd, i'll be in the kitchen and the bass is overwhelming but then i go into the living room where the system is and the bass is flat. It seems like the wall dividing the two rooms amplifies the bass. I guess maybe because the wall is hollow and makes it echo. I don't know! I'm going to keep it wired at 3 ohms. Better safe than sorry! thanks for the help.