(06-06-2015, 03:52 PM)rosdomh Wrote: Hey guys. So I will be starting AM6 in a couple of days. I just wanted to make sure if my speaker setup is okay.

When I run the silent track on my speakers, I hear a static, high-pitched noise. The kind of the sound an old TV set makes. My speaker spec says that it can handle 75Hz to 25 kHz.

First of all, should I worry about the lower frequencies (20Hz-75Hz), whether I'm using the masked or the silent tracks?

Also, I attached a snapshot of what I see on FrequenSee with the silent track. I think it looks okay, but I wanted a feedback, to make sure.

If everything's okay, I'm guessing that my hearing is sensitive? I'm almost 29, I don't think I should be hearing that much of a high pitch Otherwise, is there anything else I can try to make it fully silent? Not that I mind the static... I kinda enjoy it actually. But I wanna make this as efficient as I can

Looking for your feedback!

(06-07-2015, 04:51 AM)CatMan Wrote: First, make sure you're testing AT THE SOURCE to make sure it's as accurate as possible. Like an inch or so from the front of the speaker. It should never be higher than -32db there, it's loud enough, trust me. It's been tested in concerts and still works, so don't worry.

Aside from that, lower frequencies aren't the issue with masked, they're made to be within the range of normal human speech, which pretty much all speakers can produce. However, the ultrasonics should indeed be silent. So, any sound especially like a staticky sound or anything else, either means it's too loud, and judging by your Frequensee that doesn't seem to be the case (unless you're testing further away and NOT at the source like you're supposed to of course). OR, it's a case of the speakers being unable to properly produce the ultrasonic, and it results in distortion which won't get you the result you want. That seems to be the issue here. Many manufacturers list stuff as 20-khz or beyond, but to save money, don't actually MEET those specs in reality when tested. And since marketing is the issue there, and most people don't listen to stuff too far above the normal range of human speech, they chance it and misrepresent to appear to be higher quality than they truly are. That seems to be the case here. You'll need to change speakers, or use masked with these ones. I used masked for a lot of my AM6 run before switching to ultrasonic, and they both worked great. They both have the SAME messages in them, it's just a difference in delivery methods.

All of this is in the forum in stickies and threads and the manual etc. Explore around, there's a wealth of info to get you the most out of your listening.

(09-21-2014, 07:54 PM)Shannon Wrote: Both appear to be hitting 20 kHz, but the iMac speakers appear to be, by your description, doing a much better job of expressing it than the Logitechs. It sounds like the Logitechs are suffering from some sort of wear and tear in some way. Loose connection maybe. You should not hear anything after 18-19 seconds on the test audio unless you have exceptional high frequency hearing, and even then it should be even and continuous rise in pitch from both stereo channels.

(06-07-2015, 04:04 PM)rosdomh Wrote: Thanks for the feedback, guys

For the audio test, I did run it, and I hear the pitch going up for about 25 seconds, and then goes silent. No crackles. However, I do hear some other sound going up and down in volume in the background as well. Not sure if that's supposed to happen.

My speakers are Polk Audio Atrium4. If any of you guys have heard of it or even used it for the ultrasonic tracks successfully, lemme know.

Also, sorry for the confusion. The noise I hear when I run the silent track is a clean and smooth high pitched tone. No crackles or anything like that.

(06-07-2015, 07:52 PM)CatMan Wrote: You said static, which is the case when the signal isn't reproduced properly. Polk makes good speakers, and those are well beyond the specs needed. But if it isn't static, and is only a high pitched sound, then that means the volume is probably set too high. Make sure it's no more than -32db at the source, like an inch from the speaker. Test in Frequensee, if it's higher lower it, and listen for the sound, keep lowering it until you get a -db rating where the high pitched sound isn't audible anymore and post back and we'll see if it's good. At this point, it's looking like it was just set too loud.