Hi all,
So, after moving to a new place that supposedly has better acoustic (carpet all around, more open space, etc)
I am a bit concerned about the EQ it created. See pics below.
As always it made my speakers (Large) but I did change it back to (Small). It also miss-measured my subwoofer distance by making it about 1 foot further that it is.
Anyway ... I am just very curious to hear what you have to say about this chart. I mostly really like the sound. If I get too picky, I would want to turn the high frequencies just a tad lower. Unfortunately can't really do it with Denon 4311.
Surround speakers are smaller bookshelves (Ascend HTM-200se)
Thoughts?
thank you
https://www.dropbox.com/s/sk69a13zdd19iv1/IMG_5364.JPG?dl=0
https://www.dropbox.com/s/kg90y2v322dovae/IMG_5365.JPG?dl=0
https://www.dropbox.com/s/u3qma0hwm62cmmf/IMG_5366.JPG?dl=0
What Audyssey has done is actually explainable. It also gives insight into the world of commercial speaker design.
I have not really looked closely at Ascend speakers before, to be honest. I would say their site is more forthcoming than most, and more honest.
Here is the frequency response of the unmodified and modified versions of the speaker you have.
Here is the impedance curve.
What can we see from this? First the speaker is likely not BSC compensated, or at least very inadequately.
The lack of BSC is attempted to be masked by improper tuning of the enclosure to give a peak in the 100 Hz region.
The impedance curve does not show the drop that it should if the speaker were properly BSC compensated.
Now Ascend are quite frank about this to their credit.
[Overall curve is remarkably linear, coming in at an amazing +/- 0.5dB throughout the bandwidth of the speaker. (note, port tube output is not factored into the anechoic response, which will fill in the mild dip in output below 500Hz)]
The reason given for this is linear impedance and easy drive. (Damn receivers again!)
[Linear impedance response for consistent performance regardless of amplification source.]
Other probable reasons for this but not stated would be: -
Driver at that price point not able to handle the power requires to achieve goal spl.
Lower overall spl and a reduction in sensitivity spec.
The other issue despite talk of careful phasing there are significant phase discontinuity issues at crossover which really shows up in the waterfall plot.
In the t version you have this is considerably improved.
High end response is smooth and extended.
So what of Audyssey?
It looks as if you have a room bass peak problem.
Audyssey is attempting to correct the lack of BSC. This is not a good way to do it.
Now we get my biggest complaint about Audyssey, it is correcting the top end to make it flat at the listening position. This should NOT be done and sounds awful.
For me this rules out using Audyssey frequency response correction.
So here you see what a commercial manufacturer is up against and the choices they think they are forced to make.
I highly doubt I would like that speaker. It definitely caters to the pop crowd, where these choices would be less adverse and some like the port thump.
All in all another good reason to learn to design your own speakers!
