Recent content by brk

Boosting the 100-300 hz region will make the speakers sound "bigger" at the expense of some muddiness in the midrange. REW can find a minimal phase region in there to experiment with some tasteful boosting to find a happy medium. For the bass, my speakers were designed with an "EQ box" that...

Some comments based on spending too many hours on this for my speakers/room, which had a somewhat similar frequency response to yours. 1. I could never get consistent measurements using the MMM method. Averaging fixed measurements around the listening position was the only way I could get...

Any ideas for an absorption panel that does not look ridiculous? Can you cover it with a picture?

Thanks! I rechecked the numbers and found a mistake. Here are the true dimensions: The room is 19 x 13 feet with the speakers set up on the long (19 foot) wall. Their outside edges are 70 inches from the side walls. Their backs are 22-24 inches from the back wall - 22 for the outside edge and 24...

Thank you for the file. I see that you use multiple high Q filters to get the response- are the "rules" about avoiding steep filters beyond the bass region and staying away from areas of high phase shift just recommendations? Also, you EQ to a flat frequency response - as this is at the...

Thanks everyone. Ppataki - I cannot find the right measurements so will have to re-do. If you send me the correction for the left I should be able to easily adapt. You can see the current EQ strategy I chose on that first graph - with sharp reductions around 44 and 62. Will try a broad filter...

Moving mic - RTA - periodic pink noise. Left channel (right looks similar). Why such a high Q value of 7 for the filter at 860?

Sweep - left only

Measurements here using RTA / periodic pink noise. These are averages from several positions around each ear using UMIK on a stand - about 100 averages each (measurements were generally similar to one another).

Sort of - that 800-1000 hz bump seen in anechoic measurements becomes larger and wider in my room at the listening position. This is easy to take out with EQ. The room naturally smoothes out the treble to give a roughly even 0.8 db/octave decline after 1K. The 80-350 range is the problem. A...

Wow - thanks for all of these replies. Rednexala - you have correctly identified the speakers based on only the in-room frequency response- like a DNA fingerprint. Impressive! Ppataki - when you say "force correct the dip between 80 and 400" do you mean adding a wide EQ boost there - would...

Hello room acoustics wizards, After some time measuring and working with REW I have managed to get meaningful improvements in the measurements and subjective sound of my two-way speakers- see attached. Space limitations require set up along the long wall of a 22 x 14 foot room, so they are only...

That’s exactly right. They also make great high power solid state amps that measure really well and include real tone controls… and phono cartridges and preamps. They know what they are doing and make a wide range of stuff for different set-ups and tastes.

Short rise times and no overshoot on square wave, signal to noise of 88 db, and gets to 30W rated power with <1% distortion. SS amps may have more power and somewhat higher signal to noise, but with efficient speakers, a non-cavernous room, and music other than full orchestras I don't think...

This is surprising as Luxman gear is not only built well but also typically measures well. Their MQ-88 tube amplifier had great measurements for this design: https://www.stereophile.com/content/listening-189-luxman-mq-88use-measurements