Is this distortion or something else?

[kemmler3D]

I can measure the kali woofer by itself with another amp.

Ah, there's a thought. But, I guess you will be bypassing the crossover...? This might create the same kind of issue of apples-and-oranges.

 

[tmtomh]

Apologies if I'm being daft, but so far I've only listened to this on my computer, so if there's some kind of subtle noise component to this I wouldn't hear it (other than what appears to be some kind of momentary moving of the mic or other disturbance unrelated to the issue).

But what I do hear very clearly is something that I believe was mentioned earlier in the thread: the tone very clearly sounds like it's changing pitch and volume, like one or more low-order harmonics are slowly (or at least somewhat slowly) oscillating, and doing so pretty significantly. Per @danadam 's spectra posted earlier, the signal gets a lot louder at the 14-second mark.

Is that what we're talking about?

If so, is there any possibility that the frequency of the H3 could happen to be a frequency where the OP's room has a natural mode/peak? Maybe far-fetched but I thought worth at least asking, if only to rule it out.

 

[bachatero]

If so, is there any possibility that the frequency of the H3 could happen to be a frequency where the OP's room has a natural mode/peak? Maybe far-fetched but I thought worth at least asking, if only to rule it out.

Unfortunately, this doesn't seem to be the case because by the equation 2000*sqrt(Tr/V) from https://www.audiosciencereview.com/...large-small-rooms-a-matter-of-statistics.569/ my room becomes statistical at about 100-200Hz, far below the H3's frequency.

 

[Ktacos]

Ah, there's a thought. But, I guess you will be bypassing the crossover...? This might create the same kind of issue of apples-and-oranges.

The crossover filter appears to be quite simple, I can replicate it easily elsewhere, but it should rule out that the amplifier is the cause. When I say amplifier I mean the whole plate assembly, crossover and amplifier since they are mated as one and cannot be altered.

 

[Ktacos]

I hooked the woofer up to it's own amp and it measured pretty much the same but I don't at all hear the oscillating over tone so there's something in the Kali amp that is causing that. No idea what it would even be or how to measure it but my ears can definitely hear the difference. I'm not going to worry about it.

 

[Sokel]

I would also check the broad skirt of the signal.
Compare it with the cheap Fostex's skirt some posts ago.

Sounds like something electrical going on,At what freq do these have their X-over?

Edit: I checked,they are small active monitors,so way higher than 440Hz,not relative.