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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Re: Impressions of Parts Express Dayton 10" Sub Kit posted by sam9 on July 26, 2002 at 13:03:37:
With a sub it's always a Catch 22. Most rooms have a peak in the bass around 50-80 Hz, and they usually are quite large peaks. Loading the sub in a corner usually heps reinforce bass fequencies down around 20-30Hz, you need the room to help boost the response down there. The problem with that is you boost all bass frequencies and if you have a big peak in the bass already then it's just amplified all that more. So you turn the volume down to reduce the peak but then you are throwing off the response way down in the very low bass, you can't win. Moving the sub around the room helps but usually is fruitless in the end, you always end up trading off something for another- less deep bass for smoother mid bass for example. Room treatments, like bass traps are a good solution here.The xover in the Titanic plate amp might well be very accurate, though it's said that the filters in plate amps are not all that accurate but still not grossly inaccurate. Let's say you find a good spot in the room with dialed in settings that gives you pretty flat response from 25Hz to 40Hz and you have the xover set at 40Hz. Even though the roll off begins here at a slope of 12dB per octave, because of huge peak in the bass within your room around 50-60 Hz (not uncommon to see as much as 15-20 dB peaks) you are still going to have a large peak in the bass above the xover setting. It's easy to blame the internal xover and it's accuracy but if you look at what's going on here via measurements it's easier to see. Subs are a massive pain in the ass.
Treating the room is the best solution. But still, I can only imagine that the convenience of a 24dB per octave xover with adjustable filter settings below 40Hz would be quite ideal.
With ALL that said, I still feel that if one were to acquire very linear and flat bass from say 80Hz down to 20Hz you'd be darn surprised at how naked and lifeless the bass would sound. Bass is a wierd thing. Reasonably boosted bass that might not "measure" ruler flat can be more satisfying when listeing to music oddly enough.
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Follow Ups
- Rooms are the biggest problem - Sean H 14:08:29 07/26/02 (1)
- Re: Rooms are the biggest problem - sam9 15:38:52 07/26/02 (0)
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