Small horn monitors

[Beowulf]

I had them upside down for a while, but found the duck look a little distracting.

They look absolutely stunning in their final position on either side of the fireplace . . . wow. Are you using the bass bins with them here, and they're just not shown?

[johnaec]

Very nice! I hope someday I can find the time to get out all the cabinets I have plans for...

John

[John W]

They look absolutely stunning in their final position on either side of the fireplace . . . wow. Are you using the bass bins with them here, and they're just not shown?

No, these are LE120H boxes from another project. I wish I had someplace to set them up and not get in trouble with the family.

[toddalin]

I'm thinking that you may be able to bring up the trough between 1.5k and 4k by making C3 larger. You may want to try paralleling some other values with C3 and look at the resulting effects. Just start small and work up.

Most of the JBL crossovers I see for use with horn drivers (LE85 and equivalent) use a value of 12 - 16.5 mfd for a crossover point of 800 to 1kHz. To me, a value of 1.8 mfd looks kind of small. (The 075 uses a value of 1.5 mfd and a 0.6 mH choke for a 7kHz crossover point.)

[subwoof]

Way back in 1981 I made (4) cabinets ( alas out of generic birch plywood that was painted ) that used a pair of K110-16's and the early generation 2345 that did not have the mounting flange.

These hung upside down ( your duck position ) at the back end of a big dance floor and worked quite well considering the technological limitations of the equipment.

And they looked almost identical to these! I used the 2421 ( just came out ) for HF and while there wasn't any bass to speak of, it was very wide in dispersion.

To this day I don't know where they ended up...and that horn is almost impossible to find anymore...:o(

sub

[boputnam]

I had them upside down for a while, but found the duck look a little distracting.

That's hilarious...

The measurements on the bottom are made from the listening postion, moving vertically down from horn height to sitting position on the couch.

Interesting traces, John - not as much variance as I would have expected.

Tell me - what is the "active curve" trace...?

[John W]

Tell me - what is the "active curve" trace...?

I think that is just the residual noise in my sound card and preamp. In the RTA program you can lable saved curves, but there is always the "Active" curve in the forground. Here it's with the pink noise turned off.

btw: SynRTA is nice little free RTA program
http://www.libinst.com/SynRTA.htm

[timc]

Very nice work John. You'r a real wizzard with wood




-Tim

[boputnam]

I think that is just the residual noise in my sound card and preamp. In the RTA program you can lable saved curves, but there is always the "Active" curve in the forground. ...

Hi, John...

I don't think that's what it is. Bouncing back-and-forth from the vendor's website and your post #11, above, I think the following:

All the other curves, hand labelled, are your stored traces.

The "active curve" is simply that - the current response which you have not yet stored and labelled. I guess you had moved the mic substantially out of optimum position at that point...?

Otherwise, if that is your soundcard, I'd suggest you explore different options!

[Earl K]

Very Nice John !

<> Earl K