That planar goes down to 200hz.I honestly think this will be great. Personally, I think any tests at under 90db at 1 meter are useless in a car. My planar covers the same range as a 3 inch speaker and it is 90db sensitive @1w 1meter. I'm pretty sure I run more than 1w to it, even with the engine off. Some midrange drivers are under 1% THD all the way up to 100db. How is one going to compare owning a 3" with one of those?
My roadnoise is that loud at times. To me it's not hard to gage, nor does it appear loud.I can't recall exactly how he does each of his tests; they're not all the same. I know that his tweeter testing is done at 4", but no idea what the level is (for it to match his other 96dB, it's probably closer to around 89dB or so (ballparking it... half, half).
I think his small mids are tested at 96dB, 1/2m and larger mid/woofer are at 92dB 1/2m.
Seriously, I don't want to get hung up and sound like I'm preaching to the choir, but you guys really need to consider just how damn loud 92dB is when it's PURE TONES (and that's exactly what the HD testing in SE is). Just something to consider when you're reading his numbers and mine.
Besides, even at 92dB, 1/2m, you can get a clear idea of where a driver's nominal bandpass will be.
I understand and you're not the first to ask for this. The problem for me is sheer loudness levels. Even downstairs, it's quite loud at 92dB. I mean, loud enough for my baby to look concerned and my damn dogs to hide (I'm serious). Sounds like a silly cop-out, but I just can't see me putting my family through the hell of 96dB 10khz tones. lolHD performance looks pretty darn good (I'd love to see this one at 96db so I could compare it with tests from another well respected site I know, I know, no fair compairing against other tests but it would be quite informative). FR is not bad especially if you consider this is going into a car where the environment is going to play large havoc on FR anyway.
Is F1 the one we should look at?That's where listening and seeing graphs comes in. There's no AES papers or books written on how X in HD charts correlates to sound.
Realistically, I look at them to point me in the direction of crossover points.
Secondly, you can try to see what you hear and try to sync that to the HD plots (ie: "warm", "cold", "detailed", etc).
It's not really a simple answer and, I'm afraid, there's too much room for subjectivity in a post such as that for me to be the one to try to answer that.
The good thing for me is that I'm able to listen to the drivers and take notes, then run the tests. The bad part?... I still have yet to listen to any of these 3" drivers I've tested.
It's the distortion Erin, always has been. A 7 inch driver tested on axis will generally perform well into the higher frequencies. Because it's larger and beefier it will have significantly lower distortion. Distortion in the very high range where a 7 won't reach doesn't matter anyway, especially the much more annoying higher order.I understand and you're not the first to ask for this. The problem for me is sheer loudness levels. Even downstairs, it's quite loud at 92dB. I mean, loud enough for my baby to look concerned and my damn dogs to hide (I'm serious). Sounds like a silly cop-out, but I just can't see me putting my family through the hell of 96dB 10khz tones. lol
I will look for both of those, thanks.Zaphs site has good info on non-linear distortion. In fact, google that term. It should help a lot. Also, NPDang has a sticky in the review section n reading distortion measurements which may help, though I believe he only did IMD testing.