"Crossover Design for New Project"

**Panomaniac** · September 15th, 2010, 02:39 PM

750-850Hz is what I would aim for at first. We shall see!

The tweeters can roll in about 3.5KHz and make up for the drooping 288. But they won't extend the FR any higher. 15K will be it. Or maybe bring them in much higher with a HP shelf on the 288. TBD.

Getting on out past 20K with good efficiency is not easy. The T-350 may not be the right driver for the job.

**Altec Best** · September 15th, 2010, 08:01 PM

Well woofers arrived today.But boy do I have a thing or two to say about UPS and none of it is any good !! Went out to meet the driver and as I approched the truck I seen my package bounce of the floor.That's when he almost bounced off the asphalt.

. Throwing the boxes around like a football.That's when I had to speak my mind.The drivers are Pristine and to throw them around like a football is Ridiculous !!

**Panomaniac** · September 15th, 2010, 09:46 PM

Glad the drives are OK.

That's why I use FedEx ground these days. UPS is too rough.

**Earl K** · September 15th, 2010, 10:30 PM

Originally Posted by Pano

OK, here are the FR files as tab separated text. All in 1 zip file.

Thanks !

Okay, does this zipped folder open for anyone after its downloaded ?

( I get a message saying it's corrupted and that there's nothing within it to extract )

<> cheers

**Panomaniac** · September 15th, 2010, 11:11 PM

I just downloaded and opened it. I see and can open all the text files. So it didn't get hurt going up.

**Earl K** · September 16th, 2010, 07:03 AM

Originally Posted by Pano

I just downloaded and opened it. I see and can open all the text files. So it didn't get hurt going up.

Thanks for your affirmation .

I've just successfully unzipped it with my old Mac / & it's all good upon importation to REW . ( Must have been my antiVirus software holding things up )

I'll get back to this tomorrow &/or the weekend .

<> cheers

**Panomaniac** · September 16th, 2010, 08:22 AM

Cool Earl.

I'm hoping that AB gets a chance to do off axis plots of the T-350 this weekend.
Cause on axis, I don't see it as being very useful. It barely goes higher than the 288. I see the 288/511 as going to 13K then dropping off 5th order - that's typical. The T-350 goes to ~15K then drops off at what looks like about 6th order.

But maybe it will fill in off axis enough to make it useful. Otherwise, what to use? One of the Fostex super-tweeters?