I meant to say, the dip is betwen 80hz & 125hz
Speaker Placement or Room
Speakers are Vandersteen 3A's. I've got them set up according to the placement instructions that came with the manual. In general they sound really good.
I've just taken some readings with my Radio Shack spl meter and the Rives test disc, using the frequencies that are corrected for that device. I know no room is perfect and a flat response will not happen, but for the most part everything is "relatively flat". However, I'm getting a huge dip between 80hz & 100hz. 80hz is -23db, 100hz is -12 db and 125hz is -15db. 160hz is back to flat.
Is this an issue of speaker placement or is it the room? If it's the room, where do I begin to minimize these dips?
Thanks.
I've just taken some readings with my Radio Shack spl meter and the Rives test disc, using the frequencies that are corrected for that device. I know no room is perfect and a flat response will not happen, but for the most part everything is "relatively flat". However, I'm getting a huge dip between 80hz & 100hz. 80hz is -23db, 100hz is -12 db and 125hz is -15db. 160hz is back to flat.
Is this an issue of speaker placement or is it the room? If it's the room, where do I begin to minimize these dips?
Thanks.
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- 8 posts total
Most likely you can correct much of this through placement. Sometimes there are rooms that do not support certain wavelengths and without analyzing the dimensions it would be impossible to know, but likely you are getting a cancelation due to placement. Here is our resource page. On the right side you'll see an article on loudspeaker placement. Hopefully this will help you some. |
While it may be obvious, what the hell! Don't forget that where your listening seat is located can play a huge difference. Especially if you've got it sitting in a null. Play with both speakers and listening position. For example, with your test disc playing, stand at the present listening position and when a 100hz signal (or any signal) plays move the meter back and forward a foot or so and see what happens. You might be surprised. Take your time, make lots of notes and graphs as you go. BTW, FWIW I find it easier to use a disc with pink noise such as those available thru Stereophile than the Rives disc with its 'constant tone'. I just factor in the corrections for the errors in the RS meter. FWIW, The Cara program on Rives site is an excellent starting point, it hit my speaker locations perfectly, but missed my listening position by a foot or so. |
- 8 posts total