mulletchuck
Well-known member
So, i borrowed my roommate's monitor stands to try them out in place of mine. they're 30" vs. my 36". And let me tell you, it's amazing what you can do with 6". THANK YOU AND GOODNIGHT
lol
Anyway. Here are some before and after results:
First up is me playing a full-spectrum mix direct into SpectraFoo (1 channel) and then capturing it in the room with my old monitor stands. Notice the massive holes throughout the bass region.
Now, here's what my room sounds like with the speakers lowered 6" and pushed a bit further away from my listening position. Also included is the noise floor of my room after the chinese restaurant shuts off their kitchen ventilation fan on the roof of the building.
So, check out the nice "flat" (lol) response from 50-110-ish now! I'm stoked! i can hear bass now!
Sr1200 was askin' me to try moving the speakers away from the wall because of that bump at 125hz (I have 8-9' ceilings). Check out how that affected the signal:
here's the info behind that plot:
Blue line at the top is the internal sine sweep signal (40hz-1000hz)
Rust line is Sine sweep position1: Front of Speakers flush with rear side of IKEA Jerker support poles. Aimed straight out. Roughly 7" from rear walls with bass traps behind them.
Blue line is sine sweep position 2a: Rear of Speaker flush with front side of IKEA Jerker support poles. Aimed straight out. Roughly 22" from rear wall. check out that dead spot at 80hz
Green line is sine sweep position 2b: same as 2a, just angled towards the mic.
Yellow line is Sine Sweep position3: Front of speaker aligned with front of desk, angled towards sitting position. like 5" forward from position 1, and angled towards the user.
So, that's pretty eye opening. I'm not sure how to get rid of the bump at 125hz that occurs in EVERY plot or fix the hole between 125hz and 250hz.
While i was at it, I did some sweeps of my headphones! This is interesting, to say the least.
Sennheiser HD280 vs HD650.
here's the test rig:
Regarding the noise floor for all the testing, I used my Symphony I/O with mic Pre card, and set the gain to 60db for the mic, which was a Behringer omni measurement mic for like $50 or so. I did these tests pretty late at night, so the output level was around -45db on my interface (not very loud) cuz I didn't want to wake the neighbors. Still, the results were very eye opening, and while i was doing the 40-1Khz sweeps, it was really easy to hear where the signal would duck in and out due to room modes.
What do your room sweeps look like when you pink-noise sweep your room?
lol
Anyway. Here are some before and after results:
First up is me playing a full-spectrum mix direct into SpectraFoo (1 channel) and then capturing it in the room with my old monitor stands. Notice the massive holes throughout the bass region.
Now, here's what my room sounds like with the speakers lowered 6" and pushed a bit further away from my listening position. Also included is the noise floor of my room after the chinese restaurant shuts off their kitchen ventilation fan on the roof of the building.
So, check out the nice "flat" (lol) response from 50-110-ish now! I'm stoked! i can hear bass now!
Sr1200 was askin' me to try moving the speakers away from the wall because of that bump at 125hz (I have 8-9' ceilings). Check out how that affected the signal:
here's the info behind that plot:
Blue line at the top is the internal sine sweep signal (40hz-1000hz)
Rust line is Sine sweep position1: Front of Speakers flush with rear side of IKEA Jerker support poles. Aimed straight out. Roughly 7" from rear walls with bass traps behind them.
Blue line is sine sweep position 2a: Rear of Speaker flush with front side of IKEA Jerker support poles. Aimed straight out. Roughly 22" from rear wall. check out that dead spot at 80hz
Green line is sine sweep position 2b: same as 2a, just angled towards the mic.
Yellow line is Sine Sweep position3: Front of speaker aligned with front of desk, angled towards sitting position. like 5" forward from position 1, and angled towards the user.
So, that's pretty eye opening. I'm not sure how to get rid of the bump at 125hz that occurs in EVERY plot or fix the hole between 125hz and 250hz.
While i was at it, I did some sweeps of my headphones! This is interesting, to say the least.
Sennheiser HD280 vs HD650.
here's the test rig:
Regarding the noise floor for all the testing, I used my Symphony I/O with mic Pre card, and set the gain to 60db for the mic, which was a Behringer omni measurement mic for like $50 or so. I did these tests pretty late at night, so the output level was around -45db on my interface (not very loud) cuz I didn't want to wake the neighbors. Still, the results were very eye opening, and while i was doing the 40-1Khz sweeps, it was really easy to hear where the signal would duck in and out due to room modes.
What do your room sweeps look like when you pink-noise sweep your room?