MikeDuke
I just decided to post what kind of  measurements I was able to get in my room.  To me, it looks pretty good.  I only went up to 100hz so don't worry beyond that.
Click image for larger version - Name: My_in_room_response.GIF, Views: 2129, Size: 74.62 KB
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MikeDuke
One correction.  I think the 16Hz should be 93.5.
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mfine
What about 8, 10, 12, and 14?  If you are up at 16 you are definitely getting extension below that, and it would be nice to see where it drops to -3 and -6.

Also, is that with EQ (I assume so if not you must an incredible room) and also what kind of room treatments do you have?
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MikeDuke
At this point, I don't have any tones lower then that.  I guess I can try and find some.  Yes that is with the EQ.  I figured it would be representative of what I am experiencing when I ever I play a movie.  No I don't have any treatments
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mfine

WOW, That is an amazing result without room treatments.  My first guess is the (small) peak and dip at 45 and 65 are room related so a few absorbers could make it ruler flat.

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MikeDuke
I remember Mark saying after he finished connecting and calibrating my system that he was very happy that it turned out so well considering I have no room treatments.  Those peaks and dips are definitely room related because I measured them also with my previous sub.  I am a happy camper .
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mfine
I have room envy and I don't even know what the room looks like

I'll be a happy camper if my results are half as good with EQ AND room treatments.  When you are worried about getting rid of a 1 or 2 db peak you know you have a darn good system.
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MikeDuke
There is nothing wrong with being lucky.  Don't have to much room envy.  My room is very very small.  That has allot to do with it as well.  You can see my system on this forum in the "Journey and Destination section".   I am not sure how much eq magic  Mark needed to do to get the room to that level.  Maybe he can peak in here and let us know.
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MikeDuke

If anyone can show me where to down load some really low test tones, I would be very grateful.

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mfine
Last time I used this from a laptop....

http://www.tucows.com/preview/240287

I made some 3 second tones for 5-15 hz with it.  These are mono (same for L and R channels) at CD settings so you should be able to write them to disk.  be CAREFUL these are at 0db!!!!!!  Turn the volume down and use at your own risk.

http://www.m-fine.com/Bass tones.zip

P.s.  I would test these on my own Submersive before sharing, but Mark has not sent me one yet so I will just have to go back to watching Opra re-runs on my HT gear with no output below 80 hz   
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mfine
P.P.s.  Mark will not be chiming in anytime soon, it looks like he is having fun in Washington....

http://av123forum.com/showthread.php?t=23663

Looks like LOTR and Master and Commander will continue to collect dust this week while I suffer through Sisterhood of the Traveling Pants.  Forget room envy, I am going to start to be envious of the guys with Cerwin Vegas soon!!!

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MikeDuke
mfine,
Thanks for the links. Mark told me last week that he was out of town for a few days.  But hopeully when he comes back he can share his thoughts on my room.
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MikeDuke
"I made some 3 second tones for 5-15 hz with it.  These are mono (same for L and R channels) at CD settings so you should be able to write them to disk.  be CAREFUL these are at 0db!!!!!!  Turn the volume down and use at your own risk."
When I did the other test the overall level on my prossesor was at -18 from reference.  Do you think I could run yours at the same level? Or should I go lower.
Thanks
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mfine
Do you know where the other ones came from?  The source should mention what level they were recorded at.

I'll throw up a few more in frequencies you already have so you can level match.

m-fine

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mfine
http://www.m-fine.com/bass2.zip

has 16,18,20,25,30,35,40,45, and 50 so you can see where you need to be to get the same readings.  While I am at it I am going to cut a bunch more between 16-100 so if you wait a bit I can give you an entire set from a single source.



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mfine
WARNING:  Playing the following sound files with the volume set to reference (0 db) while your wife is sleeping could result in damage to you sub and your face.  I accept no responsibility for any pain you endure.

OK, I updated the original "Bass tones.zip" to include;

5-25 hz in 1 hz steps
20-80 in 2.5 hz steps
80-120 in 5 hz steps
120-200 in 10 hz steps.

It is now a 3 meg download so modem users (are there any left?) beware.

Start with something in the easily audible range, say 50-80hz and bring the volume up until you get readings at the level you want to take measurements which looks like about 90db for your other graph.  I don't know how much sine wave activity a Submersive can handle before smoking, so if it was mine I would play each tone just long enough to get a reading, and then wait a few seconds in between to let heat dissipate.  The louder you are running the tones the longer I would wait between them, until Seaton pipes in and tells us what the safe limits are.


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MikeDuke
Thanks.
I need to burn the ones you posted then I will try and  make time to run some more tests.  I wont go silly stupid with these.  I will most likely set it at the level I had for the other tests, that way the new numbers will just be an extension of the other ones.

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Mark_Seaton
Hi Mike,

Here's what I had measured for the sub only in your room after EQ.  We might have made a few minor adjustments from this point, but nothing significant:

SubMersive Only, Post EQ
Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436
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MikeDuke
Thanks for posting that Mark.  That looks pretty good to me.  I am still impressed that we got down to 8hz in my room.  Impressive, if I do say so my self.


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MikeDuke
Somehow, I don't know how, but Marks graph that he posted evaporated.  Here it is again
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