Allgood, Here's an interesting and easy-to-do wideband audio system performance test, 20 to 800 approx. Since you are a ME, you'll recognize it as an MTF (modulation transfer function) test. Down-load it, play over headphones and then play through your system and note the difference in dynamic clarity. https://www.acousticsciences.com/matt If you record the test signal at the listening position and email the recording to me art.n@acousticsciences.com I'll get it analyzed and sent back you. It will be fun and illuminating. Art Noxon ASC TubeTraps |
Thanks Art for the info... Im thinking I was a different kind of Mechanical Engineer than your used to. And Im a former Marine so please grade this response on a curve. haha.
Think HASS 3 to 5 axis mill. Master Cam and G code along with and a really big hammer and press... Im terrible with computers and new programs. Do you an old geezer Power user of your products that could come over in Phoenix and give some recommendations? Id pay him for his time. No substitute for wisdom and first hand experience.
lmk you can PM me if you dont his/her info out there. |
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phusis420 posts
From my experience so far.if you have two subs run them in stereo next to your mains. Basically creating "TRUE" full range speakers. No matter what your mains claim to be on the brochure. If you have more than two Mono is the way to go and aim them away from you like Duke says. Swarm Subs aka more than 3 can act as room treatments by cancelling nodes or adding room nodes to make you smile. Although I am going to test this theory in my room this week. Getting another AMP tomorrow to have 4 independent channels of amplification with separate X overs, phase, and volume control for each of the four 4 subs. I will run them both ways and see what I like best. Also side note 16 ohm with the subs can sound better than 4 ohms even though your getting more juice outta the Bass Amp at 4 ohms. Its past my IQ but it does change the sounds better sometime sometimes not.
Just my 2 cents.
Allgood!
@audiokinesis --
(@brotw posted: " As I understand it, an array of subs would be very effective at smoothing out the bass response of the room over a wider sweet spot. What about spatial cues from bass frequencies? ")
The good news is, you can have both.
My understanding is that true stereo below 80 Hz is actually quite rare, but if you want the ability to reproduce it, then (assuming four subs total) send the left channel signal to the two subs located towards the left-hand side of the room, and the right channel signal to the two subs located towards the right-hand side of the room.
Assuming there is stereo information below 80 Hz, rare it may be, and that one, if placement allowed, would like to take advantage of stereo information here, how would you approach connecting a diagonally positioned pair of subs (just 2, not 4) - like, one sub in the front left corner, and one in the rear right corner? Would you still hook them up in stereo being one sub is effectively placed to the left (front), and one is to the right (rear); or, would you rather connect them in mono?
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@haywood310 -- From my experience so far.if you have two subs run them in stereo next to your mains. Basically creating "TRUE" full range speakers. No matter what your mains claim to be on the brochure. If you have more than two Mono is the way to go and aim them away from you like Duke says. Swarm Subs aka more than 3 can act as room treatments by cancelling nodes or adding room nodes to make you smile. Although I am going to test this theory in my room this week. Getting another AMP tomorrow to have 4 independent channels of amplification with separate X overs, phase, and volume control for each of the four 4 subs. I will run them both ways and see what I like best. Also side note 16 ohm with the subs can sound better than 4 ohms even though your getting more juice outta the Bass Amp at 4 ohms. Its past my IQ but it does change the sounds better sometime sometimes not.
Just my 2 cents.
Allgood! Thanks for your reply and sharing your experience on the use of dual subs, and where and how to connect them. That's exactly how I'm running mine, closely flanking the mains and in stereo (see my profile). I did consider placing the subs diagonally, but for now the current configuration will remain. I just recently implemented a few acoustical tweaks and a subtle PEQ correction on the subs, and it made a worthwhile difference making the response down low flatter while having a positive influence through the midrange on up. It's amazing what minor tweaks can do, when you know where to put them into effect. |