Heresy K-700 horn, 2 versions made by Klipsch

[Dflip]

This information is from Bob Crites, I included it as a separate item to make it easier to search for in the future. There are 2 versions of the K-700 horn.

The problem may be that there are two very different metal K-700 horns that are functionally the same and both genuine Klipsch. I will call them the "thick" and "thin" castings. In the picture below the thick casting is on the left and the thin is on the right. The thick one weighs 2 pounds and the thin weighs 1 pound 4 oz.

[fini]

Nice to see this, Dflip! I wonder if the same variations occur in the other squawker horns? I really hope the new forum has a better search function. It would be nice to have an "FAQ" section, as well.

[BEC]

I guess I should have said at least two versions of the K-700 horns. Two is what I have seen. There could be many more. I also have two versions of the K-400 metal horns.

Bob

[colterphoto1]

There may also be potential buyers out there who are not aware of the K601 and K701 composite (plastic molded) derivation of these horns. In the case of My K601's, they have a four bolt pattern for the K53 driver, so a K55 thread on would not work.

Also the 700 metal horns for Heresy are different shape at the bell end that the K701 Heresy and Heresy II plastic ones. The black plastic have a curvature on the bottom edge that wraps around the woofer basket. The 700 metal is symmetrical with 4 cast mounting tabs.

There are probably a few more oddities out there as well.

I suggest that everyone be very specific when buying or selling these horns. Mention the model number, speaker it was originally intended for, possible mating drivers, composition, and mounting style.

Michael

[Malcolm]

There are at least 3 versions of the K-700. My 1965s and 1972 have horns similar to the thick one in the picture. But they do not have the little ears for the mounting holes. The mounting holes are in the corners.

[Hardhead]

Yes, there are at least two kinds of aluminum horns. That's what I was talking about yesterday morning in my post.

"I found to be an improvement when used on the older, thicker aluminum midrange horns. The later, thinner aluminum midranges when caulked sounded worse to me instead of better."

[jorre]

Hello to all;

FYI;

I have HPS-4000 speakers model SR-70.

The horn is named G-700 and has a Atlas Sound PD-5VH mounted on it.

All the components look like Klipsch material,so that's another K-700 model

[WMcD]

There are collections of Klipsch papers on the forum. I had posted the Dope From Hope collection I had. It did not include the DfH on the New K-700. There is another collection of documents which includes that DfH.

IIRC PWK reports that he went from a sand cast K-700 to die cast. Also, even though the new die cast departed from his specs, the response was better. Years later, Roy said something similar about one of his horns, though perhaps the unexpected improvement was a result of a different issue.

There has been a picture on the forum of the composite K-700 maybe called the 701.

I don't have any information on different metal versions of the K-400. I did post a picture of the die contraption for a version. Maybe there was an earlier sand cast. And of course we have the present K-401.

Wm McD

[fini]

While I appreciate the resurfacing of any post to which I have contributed, there are many others where my response was significantly funnier. Just a heads-up.

[WMcD]

Here's what PWK says.

Wm McD

DfH on New K-700 Horn.pdf

DfH on New K-700 Horn.pdf

[homemadeheresy]

Here's what PWK says.

Wm McD

Thanks for positing this DFH, I always enjoying reading these.

[70SATMan]

There are two versions of the thin flange K-700 horn shown on the right that I know of. The number and pattern of mounting holes are different from each other.