Search results

Thank you. I found Glen's response. He's basically saying, yes, all Amir's measurements are spot on, however, we don't have the tests to properly measure the differences. Which then made me wonder......... if we can't measure the differences, how did he test and design for the same? Glen...

Can you provide a link to his comments? I don't know what PS A is. Thanks.

What is the consensus on Furman products? https://furmanpower.com/product/discrete-symmetrical-power-filter-20-amp/

We are lost without our leader Napilopez, stumbling in the dark. :D

Correct, 4". Measured from the 1/2 the peak of the surround to 1/2 the peak of the opposite surround.

Yes, I am all set as far as the measurements and equipment go. I just need help in blending the measurements into a 20 to 20K range. Thanks!

Hi Guys, I am in the process of learning how to use REW to make indoor speaker measurements using the method found here: https://www.audiosciencereview.com/forum/index.php?threads/how-to-make-quasi-anechoic-speaker-measurements-spinoramas-with-rew-and-vituixcad.21860/page-9 The thread has...

Thank you! The raised part is considered the "surround" putting this driver with a piston area of 4".

Sorry, I should have been clearer. I'm asking where to start the measurement for the piston area... half-way into the blue line or half-way into the yellow line? If we measure from the blue line the piston area is 4.5 inches. If we measure from the yellow line the piston area is 4.0 inches.

I think I'm still confused by how to measure the "speaker piston diameter" for the baffle compensation spreadsheet. In the pic below do I measure halfway from the blue line or the yellow line? Thanks!

<< Based on your outdoor photo, it looks like the speaker is far forward on the turntable. The baffle should be directly above the axis of rotation.>> I haven't posted my off axis response yet, however, I think I did my off-axis measurements wrong. I had the baffle of the tower speaker aligned...

Attached are the on-axis and individual driver measurements. The hi-end response deviates quite a bit from Ascend's official chart. However, I did find some independent measurements that are much closer to my measurements. I've attached some response images below for a baseline below...

I do have a few questions about the procedure you posted above for measuring a tower. 1. <<I'd also make sure all of these measurements were made without changing the SPL of speaker between measurements, to ensure the scaling works properly.>> I try to take my on-axis measurement at 85db. My...

<< For scaling the low woofers, we have 20Log (4.125/2.45) = -0.259 So in REW, I will adjust the response of each woofer by -0.3 dB (REW doesn't let you be more precise than a 10th of a dB)>> Where did the 2.45 number above come from? Also, I want to make sure I am doing the calculation...

How cool is that?! Having very little knowledge of acoustics, and with your guide, I was able to product a fairly accurate curve. Per your request, I have posted exact measurements of the woofer(s), midrange, and port (see attached). For those of us that are new to this, can you please...

I measured all drivers separately. There are 75 db measurments for: On Axis - 1 meter Midrange - .20 inches Woofer #1 - .20 inchers Woofer #2 - .20 inches Rear Port - flush Napilopez, would you mind combining the measurements for a final on axis measurement? As the guide covers a single...

You nailed it! I had a timing measurement on for both measurements which I had used previously for in room measurements. I am going to turn that off and change my calibration file. I'll measure the midrange as well though it may be difficult because it has a large phase plug. In your guide...

Thank you for the generous, detailed response. Before I respond to your post, I'd like to switch gears a bit. I tested down to 200hz using your guide. Unless I am mistaken the results seemed pretty close from 200hz up, which is exciting! Official Ascend Acoustics chart My chart I tested...

Thanks guys. I attached the zipped REW files. Below are the numbers I used for the diffraction step. I'm curious what I did wrong. I also need to know how to account for the two 5.25" bass drivers and one port. Greatly appreciate the help! I also don't mind paying someone a fee to help...

Thank you for the response. I measured the port first and then one of the front woofers. My charts look similar to yours, however, after aligning and tracing the graphs seem wrong. The large dip at 55hz in the final frequency response definitely does not look correct. I am not sure what I...