Spiral Shaped Transmission Line Enclosure Project Complete

[kneadle]

Originally posted by audioPT
Little coloured snakes!
They have tweeters in the eyes?

The sound is satisfactory or good?

Let us know!

If you examine the close-up photo, you'll be able to make out that only ONE of the eyes contains a tweeter. Pretty neat, eh?

So far, I can say with confidence that the sound is good, and it might be very good. I haven't listened at medium to high levels yet. The bass is very nice. It makes me happy.

Dave

[qwad]

MAKES ME HAPPY

DAVE
and that my friend is the most important part of all... that you are happy
cheers,TJB

[kneadle]

I'm about three days into listening, and I have this critique: At some point in low-level listening in a small room, the very low-bass disappears. I'm guessing stuff below 80 Hz (where is low E on a bass guitar?).

There are a few reasons why this could be so. Low levels, small room, and the program material.

For some reason, I've been in the mood for material recorded live, not in the studio. I'm not sure about the integrity of certain Grateful Dead recordings, specifically, "Reckoning" and "Grateful Dead"on CD. In addition, I've been listening to the DG recording of Anda's performance of the Mozart Piano Concertos on CD. Not sure about those recordings either.

I accidentally played UT2003 with them on. HOLY MOLY! Hyped low-midbass for the kiddies is astounding! But I won't found a critique on that basis. But WOW!

Again, so far, considering the control environment and listening material, my critique is that the low, exceedingly low bass, disappears.

I plan to listen to Led Zeppelin's "Presence" on vinyl sometime this week at higher levels. That should yield a fuller critique.

Dave

[phase_accurate]

Low E is 41.3 Hz approx.

Regards

Charles

BTW these tingies look neat !!

[kneadle]

Ok, so then I'm losing the bass frequencies at about 50 Hz in a low-listening level in a small room. Not bad, I should think, for a couple of snakes!

I'll never have to say, "Could you please take your beer off my speaker?"

Dave

[7V]

Originally posted by kneadle
Ok, so then I'm losing the bass frequencies at about 50 Hz in a low-listening level in a small room. Not bad, I should think, for a couple of snakes!

I'll never have to say, "Could you please take your beer off my speaker?"

Dave

How about: "Could you please stop your snakes drinking my beer"?

Re. your 50Hz, have you tried experimenting with the stuffing?

Steve

[kneadle]

Originally posted by 7V


Re. your 50Hz, have you tried experimenting with the stuffing?

Not yet. Thanks for the suggestion. I'm so satisfied I'm almost afraid to try.

In fact, now that I look at my stuffing supply, I find that I have only stuffed it half as much as the design specs call for. I figured it will be easier to put in than take out. I suppose the design specs are for something more than just pretty graphs and fancy numbers, though.

Dave

[kneadle]

Man, I just remembered that I didn't seal the cable run from the woofer to the Crossover, which is outside the enclosure!

So that's TWO things on the order of incompleteness.

And I'm trying to earn a PhD...

Dave

[kneadle]

The wiring hole is plugged now, and the correct amount of stuffing is in the pipes. I have now listened to music loudly and quietly, and the response is better than acceptable now. I'm not losing those extra low frequencies at any volume.

Right now I'm listening to Led Zeppelin the way God intended--on vinyl--and, man, they knew how to make records back in those days.

At any rate, the bass is smooth and "controlled," I guess you could say. There's no hyping anywhere in the bass through the midbass frequencies. I'm listening for peaks and valleys throughout the rest of the spectrum, and I can't say that there's no unwanted coloration.

I am being EXTREMELY critical, as much as I can objectively be (I did build them, you know, so of course they're going to be great!), so I might be looking for a frog in the garden. These things are truly much better than my expectations.

Transmission Lines live up to the hype.

Dave

[faustian bargin]

your kid is going to be so spoiled.



congratulations on a great project. it's great to have proof that the spiral concept WORKS!

/andrew - starts imagining a spiral adaptation of pass's "el pipe-o"