glens

That link ain't no good!

Of course, any species having "tight grain" is indicative of many lean seasons of growth. Northern, or high-altitude, or arid regions would yield the best in that respect. Unless by "tight" one means merely "hard to split because it's all twisted together" which would then include at least beech, Ironwood, and even sycamore... Something tangential which I really, really wonder about is when it became customary to call a "horn" a "lens."

Okay, but pertinent to what I've been saying, it would be interesting to see comparison between that black trace, a version of same without T2A connected between the caps, and a version of same with the supply side of C2 connected instead to the other end of C1. The difference should not be great in any event (2uF vs 1.7uF), but whichever new (dis-/alt.) connection more nearly follows what you have already shown would indicate whether or not the two caps act (more) as "series caps" or not. Thanks.

Did you pressure the folks to hurry up and make yours? Not a call I'd make; rather it would be "take your time."

The resistor is wrong at the autoformer. Rather than in series, it should be across some winding (don't know which at the moment).

The results seem to meet my expectations... Never too nerdy; post your math.

Thickness of the coating in and of itself wouldn't matter as much as the mass by itself. 1-1/2" of even tightly compressed goose down wouldn't achieve near the result as 1/8" of roofing material.

Why would you want to avoid banging those woofers? They look very nice I'm thinking "busy bangin' something else."

Just pickin' nits, but I believe the PT Cruiser (I called it PT Barnum for the longest time, but the looks grew on me over the years) was a Chrysler product. You should search the forums for posts by Jeff Medwin. You two should get along famously!

Please also take a measurement at the 8 ohm resistor through both caps alone (no transformer attachment between them). The difference between the two "tweeter" circuit measurements should answer the speculation on my part. Thanks.

I guess I thought the mid horn in the Heresy III was already a tractrix taper.

I've never had the opportunity to, thus have not dicked with that, but have to believe if the horn is physically active like that there most certainly will be coloration imparted. As well, I'd surmise it to be a negative effect, but that's got to be dependent upon the horn/driver system as a whole. Can't imagine it would ever be desirable for faithful audio.

Five bucks?

Vibration of the terminals? Really any sort of problem? And airtight sealing on a bass-reflex cabinet? Way overkill. But it's your time and money, I guess.

18 years later...

You mean do wear with each and every playing. Saw a Van Morrison "concert" show on AXS TV the other day and although I've enjoyed his "product" over the years, not so much the later stuff, and I switched channels before ingesting much of it...

I'm confident the manual is quite meager. What does it say (if anything) about your question?

OP: Why do you want to "upgrade"? Do you discern something's wrong?

Impedance and resistance are (most) only ever the same in a DC circuit. Sticking a multimeter on the binding posts satisfies that condition since the meter's (almost invariably, unless you've spent near $1k on the instrument and set it accordingly) using DC to derive its measurement. All you did was perform a "go / no go" check and it has little bearing on what the variable impedance vs. frequency ends up being. To measure impedance over frequency as in the posted chart requires a more elaborate setup. If the AVR of choice is "4 ohm stable", you're surely good to go no matter what. Actually, I'm surprised at your reading on the HF terminals. It should read very much higher, if at all...

What's the path to the tweeter? One capacitor out directly into another. There's a bit of parallelism going on after the first cap, sure, but it's still 1/( 1/13uF + 1/2uF )uF to the tweeter.

As an aside, this sort of shenanigans is why high-electricity-usage industry invests heavily in power factor correction equipment. The utilities don't like to have to make and send 1.2 megawatts only to be able to bill for 1, so they bill for what they're sending, but the customer doesn't like paying the penalty...

I would because they're in series...

That's what we called it in southern Wisconsin.

You've got plenty of good company over here in the States! Maybe we ought to hold a contest to see who gets the crown...

Only about 10 sounds right for me, too. I particularly like how you can pipe stuff out to external stuff like awk and sort, at least with the newer version, vim, that I use. Elvis is pretty good if binaries need to be poked/prodded as it'll display them as a hexdump output and write them back without adding newlines.