STL

If anyone here has a KG 3.5, then I would kindly like to know the following: inside diameter of port length of the port inside dimensions of the enclosure I know I used to have this info, but after moving I cannot seem to find it (and forum searches here couldn't either). Also, if anyone a schematic of the KG 3.5's crossover please pass that along as well! Thanks...

Why not post them here for everyone to enjoy?

While you are redoing the motorboard/speaker, you would be much better off converting that KL-10 to a 3-way speaker (like your Cornwalls). It'll take a new tweeter and midrange horns as well as some crossover work (and/or a new crossover). If you realy plan to upgrade the Cornwalls, then get the same horn and midrange (for your center) that you plan to have in your mains after that upgrade.

I would love to get a copy of a KG3, KG3.2, or KG3.5 schmatic if anyone has it. Thanks...

Good point. I see at least 9 caps and 5 coils (not to mention 4 resistors). Even if the midrange has a bandpass filter, one would theoretically only need 6 caps and 6 coils to get a 3rd order (18dB/oct) slopes on all filters. So I wonder Klipsch is doing exactly? Perhaps some of the larger caps are just higher quality bypass caps? Or maybe some Zobel networks were employed (to offset the elimination of the autotransformer). I tend to think the lack of autotransformers in Hertitage series is most likely a cost savings measure, but other advancements to the filter design (and the quality of components used) along with the new titanium diaphragms have overcome that "loss".

The question is then, is the H3 better mainly because of the new crossover (which no longer uses an autoformer at attenuate the midrange horn) or is it mainly better because of the titanium new diaphragms in both the high and midrange horns? I would tend to think it is mostly the latter, but perhaps I am wrong and the autoformer weren't good. Anyone else care to chime in?

I don't see an autoformer in the following pics of a Heresy III crossover. Wonder why the switch? I also wonder if Klipsch dumped the autotransformer in all the Heritage series.

Here is what I said: I think I might have an explination for the difference (between 11/22/33 and 1A/1i). I know the A and i diaphragms have aluminum formers for the voicecoils, and I believe the 11, 22, and 33 ones are all kapton former units. That said, I found some notes from testing I did awhile back with a handheld B&K Precision 875 LCR meter (that tests at 1kHz I believe) that makes me wonder if one of the motors is actually bad! I saw Re values between 23 and 13 ohms and Le values between 1 and almost 2 mH (when each diaphragm is bolted into the very same K-52-K motor). All five of the voice coils measured about the same resistance wise, coming in at about 11 ohms, when measured NOT in a motor. I suspect it has something to do with where the coil sits when at rest in the gap, but would have expected there to be a tighter tolerance on this. I could tell a very distinct volume (and even tone) difference between the 23 and 13 ohm diaphragms -- and both of those are kapton former models! I also have three different K52K motors and they all seem to sound a bit different (with low volume testing with no filters) -- can this normal?

The low on the graph is 5Hz not 5kHz -- so this low level sweep covers the operating range of the driver (which I was aware of).

This is somewhat of a follow-up to this old thread: http://forums.klipsch.com/forums/t/39263.aspx (for some reason my link option was greyed out)

I have three complete K-57-K midrange horns (let's call them 11, 22, 33). Here are measurements from them: I also have two additional diaphragms (let's call them A and i). I placed them in the horn 1 and took the following measurements: I am hoping that someone can tell me (from these measurements) which diaphragms look good and which ones look bad/suspect? While the first three diaphragms look similar, they all sound different (in level and in tone). I have not listened to the two newest diaphragms (that's A and i) much yet.

So now we have djk (who says a K53 is a K52 motor mated with a K701 horn lens) vs. colterphoto1 (who says a K58 is a K53 motor mated with a K701 horn lens). []

Thanks for the info! Have any details on the K61?

With a little more digging, I found one (see attached). That said, anyone know the dB drop the midrange is getting with that autoformer. The schematic does say "T10A was T2A" so I would think it would be 9dB -- but I wanted some confirmation. Forte[1].pdf

Would you mind posting the schedmatic for the stock Forte network? I have collected quite a few Klipsch crossover schemtics, but this is one I have not be able to ascertain. Also, is the stock autoformer a T2A, T5A or some other model? Thanks...

Perhaps I am mistaken, but notice that the K53 is used in the Heresy 2 and Forte while the K52 and K57 (again, which I believe is a K52 motor + K601 horn lens) is used in the Chorus, Cornwall 2, KLF-20, and KLF-30. So the K53 is used in speakers with just 12" woofers while the K52/K57 is used in speakers with larger woofers (either 15s or dual 10s/12s). The larger woofer cone area would be able to move more air, thus the midranges paired with them would need to be stronger. That said I could be wrong because I do see where the T7A used in the Heresy 2 crossover is dropping the midrange out 10dB while the K52/K57ones are dropping the midrange less dBs (except for KLF-20 which also uses a T7A). So perhaps a K53 is just K52 motor + K701 horn? If anyone knows definitively, please chime in!

Did you try searching for an existing thread here first? I participated in a thread several years ago about this same subject.

The K-53-K, K-52-K, K-52H, K-57-K, K-58-K, K-59-K, K-61-K, and K-62-K all use the same diaphragm --see http://www.critesspeakers.com/klipsch_midrange.html . According to the information I have collected, K57K in the Chorus and Cornwall 2 have crossover frequencies of 650 Hz and 600 Hz, respectively. While the K53K used in the Forte and Heresy 2 both have a crossover frequency of 700 Hz.

I am under the impression that the K57K is a K52 motor with a K601 horn lens. Can anyone else confirm or deny that? I also believe the K53 is a weaker motor than the K52.

I don't really need them (and my wife would probably kill me if I bought anymore speaker project parts) but keep me in mind if you cannot find a buyer and just want to get rid of the stuff for cheap.

Yeah, those Quintets just cannot keep up I'm sure. Get some proper Klipsch horns back in the corners of the room and it really fill the space. With 25ft x 19ft room, my 5.1 setup (see below) works great. My rears are in the back corners of the room.

You don't really need to go to 7.1 -- you just need some proper rear/surround speakers. The advantages of 7.1 over 5.1 really only show up for very large rooms. If you had a pair of VF-35s or VB-15s in the rear corner of the rooms then I seriosuly doubt you'd feel the need for 7.1 anymore. Actually, you might also consider upgrading your front mains to VF-36s then moving the VF-35s to the rear.

What did you do with your KG3.5 parts?