And Now for Something Completely Different

[maynardg]

What to call them? No XO yet. Putting these together just for fun. Beside the Malbecs, and TzuJans just peeking out from behind.

And don't suggest Tidy Whiteys.

A sickness for sure.

[joeybutts]

Re: And Now for Something Completely Different

I think you already have your name.

[rudyjakubin]

Re: And Now for Something Completely Different

85db?????

hmmmm

I like them woofs. I got 4 of them also. My plans are for a JBL L100 clone.
The box (1.43 cu. ft. Knockdowns) and qts. match the Troels rebuild;http://www.troelsgravesen.dk/JBL_L100.htm

Johnny Richards budget 3-way got me kick started in that direction.

Gonna follow this thread to read your impression on these woofs.

[maynardg]

Re: And Now for Something Completely Different

Well, a 30 min XO is in place. They are making music. My wife says they are the nicest sounding XO first shot I've done. Quite listenable.

Shot in the dark - after just a few swaps -- 10.4mH on the woofer - 12uf with a 3.3 ohm series resistor on the TG9FD's.

I suppose I'll have to get out Omnimic and see what I am getting at my listening position.

These open baffles are a different animal, but really easy to listen to.

Rudy - I'm guessing you are about right.

[mzisserson]

Re: And Now for Something Completely Different

"The Paladins" Known as "holy knights", traditionally seen as "white knights" vs. the well known "Black Night". I am thinking you can have a very paint job to accompany.

OR

Since they look like something from the 80's.... "White Panthers" may work well. I can picture a hair band with that name.

They look very cool. I love simple x-overs.

[rudyjakubin]

Re: And Now for Something Completely Different

Well, a 30 min XO is in place. They are making music. My wife says they are the nicest sounding XO first shot I've done. Quite listenable.

Shot in the dark - after just a few swaps -- 10.4mH on the woofer - 12uf with a 3.3 ohm series resistor on the TG9FD's.

I suppose I'll have to get out Omnimic and see what I am getting at my listening position.

These open baffles are a different animal, but really easy to listen to.

Rudy - I'm guessing you are about right.

Now you got my curiosity up. I could try a mock before I commit to my project. The mids are cheap enough...

[NickJ]

Re: And Now for Something Completely Different

I think you should paint them sparkly white and call them "The Eltons."

Or, "The Cullens" if, you know, you hate literature.

[maynardg]

Re: And Now for Something Completely Different

After a couple of hours listening, I have just a couple of observations.

1) Something a bit edgy in upper range of female vocals and in brass passages. Don't know if it is the TG9FD's or a woofer breakup - or both. With just a first order electrical, would not be surprised if is the woof. May need a trap on the tweeter.

2) These woofers are not Ushers. ;-)
Hardly the ultimate in resolution, but they way I have them set up, useful bass way down. Qt measures 1.14 on these, so they should be OK for open baffle.

[keiths]

Re: And Now for Something Completely Different

The Flying Circus

[jonasz]

Re: And Now for Something Completely Different

The Montys

[mzisserson]

Re: And Now for Something Completely Different

After a couple of hours listening, I have just a couple of observations.

1) Something a bit edgy in upper range of female vocals and in brass passages. Don't know if it is the TG9FD's or a woofer breakup - or both. With just a first order electrical, would not be surprised if is the woof. May need a trap on the tweeter.

2) These woofers are not Ushers. ;-)
Hardly the ultimate in resolution, but they way I have them set up, useful bass way down. Qt measures 1.14 on these, so they should be OK for open baffle.

Soooooooo. When working with drivers that I know are less than ideal. A generous BBC dip with a VERY slight rise between 80 and 150Hz. Also, try getting a gentle rise (3dB.octave) from 10K and up if you can. Not sure if you can on a wide band driver. Just obersvations from years of working with junk. ;)

[[email protected]]

Re: And Now for Something Completely Different

just 'whiteys'. like the kid on 'leave it to ******'.

[theLinks]

Re: And Now for Something Completely Different

Staying with the wine names, Bloomfarms or Bloomers :D

[[email protected]]

Re: And Now for Something Completely Different

reAlly, i cant talk about wallys bother, the beave?

[maynardg]

And now some modeling.

I pulled together some modeling using Martin King's wonderful spreadsheets.

First, here is the modeled response in baffle of the woofer.
Dashed Red - Infinite Baffle Response
Dashed Magenta - Baffle Response
Dashed Brown - Crossover Response
Solid Red - Combined Response



Then I got serious about a crossover, and modeled a 2nd order electrical - again using Martin's spreadsheets. Of course, actual measured response is not included, but they are already sounding much better - moving from pretty good, to "I've got something here". Steeper slopes have taken the edge off the low end of the "full range" Vifa.

All-in-all, I'm liking them. By Indiana, they will probably be good enough to share.



Under $200. Not bad.