OSUT 260: Remember, today is the tomorrow you worried about yesterday.

[Expat]

Never ended up going to the Goodwill. Oh well.

 

[ancjr]

Really! That's cool.
I'm curious to know more.

When I built my sound reinforcement system in the late '70s/early '80s, I dissected three of the most popular brands of large bass horns to find out why they still S**K so bad in practice.
Showco, Cerwin Vega and Peavey, large bass horns, each had horrid problems in use.

I was studying, learning, attending flash seminars, using equipment I could never afford to own as lab geek wannabe.

But I did not need advanced interferometry to discover where the horn throats were weak, lacked compression and the uneven flare rates were only barely OK.

I designed mine around an hyperbolic rate of flare, (truncated still) rather than the most common exponential flare rates.

Many designs barely improve on corner loading a direct radiator. Many fail because of sub-optimal driver design for horn loading right out of the gate. Truncated is pretty much a practical necessity, as is 1/4 wave length limitation. I didn't get very deep into the design theory, but am well aware of the costs/benefits of horns and the poor examples that were commercially offered. The designer I worked with was a very brilliant engineer, but extreme leftist views made him impossible for me to continue to do business with.

 

[OneBadV8]

Never ended up going to the Goodwill. Oh well.

it'll be there tomorrow

 

[ancjr]

It's been a good while, but I know for sure that Paul Wilbur Klipsch made some of the better designs and I believe published some valuable papers on horns. Not an endorsement of his company's newer offerings.

 

[BeDome]

It's been a good while, but I know for sure that Paul Wilbur Klipsch made some of the better designs and I believe published some valuable papers on horns. Not an endorsement of his company's newer offerings.

Klipsch was one of the masters I tried to study, when I could find material by mail order. Not cheap or widely available.

Hope, AR wasn't exactly in my stomping grounds back then, but I had flown to Northridge, CA for JBL schools three times.
Klipsch offered nothing comparable to JBL's in depth training flash courses.

I've owned La Scala and Heritage systems for in home listening in the past.
Both great for certain things, but neither universal for all music in my book.

I've never let go of my JBL leanings, TBH.

Since before Y2K, I've been enamoured with open baffle efforts, mostly. That's something not many top manufacturers even try to dabble in.

I now use Lii Audio F15 in open baffles with some custom built for higher Qt, JBL frames I made up as a low end enhancement, bi-amped.
Built myself.

Decware Zen tube amps in mono block for uppers across the F15s and McIntosh MC2500 via electronic XO on the JBL lowers. Low bi-amp signal derived from the Zen outputs.
Best sound I've ever had.
I've had stronger, but never more pure, open and "out of the way," invisible speaker systems.

 

[OneBadV8]

 

[BeDome]

Chrysler dealer called and we can pick up Wife's car tomorrow AND the bill is over $300 less than the estimate.

 

[BeDome]

We did get a slight rain, which lasted maybe 5 min.
Sun came back out and ten minutes later all evidence of rain was gone.

 

[OneBadV8]

no rain here.... hopefully it holds off and I can mow later this evening

 

[DoggyDaddy]

Afternoon all. Work went crazy the last couple of hours of the day.

 

[DoggyDaddy]

It ended up raining pretty hard for a little bit, but I don't think it amounted to much. It's getting dark to the west but it looks like it might go south of us. The second line between along I-74 might make it.

 

[ancjr]

Klipsch was one of the masters I tried to study, when I could find material by mail order. Not cheap or widely available.

Hope, AR wasn't exactly in my stomping grounds back then, but I had flown to Northridge, CA for JBL schools three times.
Klipsch offered nothing comparable to JBL's in depth training flash courses.

I've owned La Scala and Heritage systems for in home listening in the past.
Both great for certain things, but neither universal for all music in my book.

I've never let go of my JBL leanings, TBH.

Since before Y2K, I've been enamoured with open baffle efforts, mostly. That's something not many top manufacturers even try to dabble in.

I now use Lii Audio F15 in open baffles with some custom built for higher Qt, JBL frames I made up as a low end enhancement, bi-amped.
Built myself.

Decware Zen tube amps in mono block for uppers across the F15s and McIntosh MC2500 via electronic XO on the JBL lowers. Low bi-amp signal derived from the Zen outputs.
Best sound I've ever had.
I've had stronger, but never more pure, open and "out of the way," invisible speaker systems.

Certainly you've check out Linkwitz's website & designs?

 

[ancjr]

Did pretty intense exercise (for me anyway) Monday and Tuesday and feel completely zapped and sore today.

 

[BeDome]

Certainly you've check out Linkwitz's website & designs?

Yep. A bit of a fan. Read it all, understand most of it.

Built one of his dual H Frame bass baffles many years ago. Only I used two 15" Dayton IB drivers, juxtopposed, instead of the little 12 inchers he used.
I still have those in the attic, somewhere.

Also doubled up the outer thickness (two layers of 3/4 MDF) and tripled the baffle thickness.
Solid, stable, heavy, no flex!

 

[Magyars]

Rained here for a bit. Got the teens inside, played chess, taught them poker ( for m&m ).

 

[ancjr]

Yep. A bit of a fan.

Built one of his dual H Frame bass baffles many years ago. Only I used two 15" Dayton IB drivers, juxtopposed, instead of the little 12 inchers he used.
I still have those in the attic, somewhere.

Also doubled up the outer thickness (two layers of 3/4 MDF) and tripled the baffle thickness.
Solid, stable, no flex!

I really wanted to make a labyrinth IB with those Daytons.

 

[DoggyDaddy]

Dang, it got dark! It's raining again now too.

 

[ancjr]

Alas, I sent thousands of dollars of drivers, coils, amps and test equipment to the Salvation Army about a decade ago. I've always wondered if it ended up with someone that knew what it was.

 

[DoggyDaddy]

Holy cow! It's really pouring now and the wind has picked up. I hope I don't lose any tree branches.

 

[greg]

Good evening…..second round of rain is here been a swamp-ass day.