Deang

Bob never called his networks “upgrades”. He never wavered on this. I am very much on the record of not liking the sound of any of the Heritage networks built with the Sonicap. Bob was very well aware of this and mostly just found it amusing.

Sometimes there is a thin layer of oil on the surface of the can. You can feel it on your hands after handling. They should be replaced at that point. No reason to wait until it’s leaking on the board. I’ve measured a lot of these over the last year and ESR is typically twice that of a new Mylar - around .80 To the OP. A low ESR polypropylene will tip the balance forward. The speaker will be too bright, almost painfully so at live listening levels.

In first post he said B&C tweeters and crossovers. I think be meant to type B&K Sound (Crites).

Nothing was purchased from me. So I guess another faux “upgrade” from you know who.

Yeah, don’t run the Type AA with the two port phase plug drivers. Thank you Mike!

You could measure a K-55-M with an AA to get a complete picture. Would be nice to settle this one. Seems maybe you can do two port phase plug with the AA, but should not do AK/AL series networks with the single port phase plug driver.

Here it is with the AK network. I know from John Allen that it was the driver used to develop the AK network in anticipation of the EV replacement (K-55-M). I confirmed this with Jim Hunter. EDIT: @geoff. Any explanation without confirmation is just conjecture, and since you are not the original owner of those LSI's, we can't really say for sure what networks those speakers shipped with. What are the serial numbers of your speakers? Another explanation is simply what Randy said. I don’t make the recipes. I’m just the cook. ¯\_(ツ)_/¯

Basically. The problem here is that the AK series of networks physically separates the high pass and low pass sections. Everything related to the bass is in the bass bin.

Are you the original owner of your La Scalas? Do you know their entire history? A lot of these systems were abused and overdriven. Mismatched drivers and networks are common with them. It doesn’t help that people are being told it doesn’t matter what networks are run with what drivers. I feel like you might be conflating issues on the last part of your post. I’m pretty tired, so I may not be getting what you are saying.

It's a virtual clone of the K-55-M. John Allen told me to build AL-3's and AK-3's for that driver.

I don't know how to answer that. It was a transition period. Maybe the AL/AK series of filters weren't ready yet so they used what they had available to them. It's a question for @JRH Jim Hunter.

Don’t run the AA with the EV drivers or the Atlas two piece phase plug K-55-V. AL-3 was the Klipsch upgrade from the AL. So why run the AL?

Heresy III kit.

You are doing the best you can with what you have available to you and you aren’t aggressively promoting non-Klipsch products or services. I think you’re fine.

Randy, Please stop editing your posts after someone responds to your original statements. Not cool. Dean

You should stop. You often seem out of touch. The parts are high quality, they just happen to be the wrong parts for a vintage Klipsch rebuild. My personal take is that their networks just don’t sound that great. Actually, most business goes to Crites. Accessible customer support Online shopping Overnight shipping Payment plans Free returns Nothing Jim or me offer can satisfy the appetite for instant gratification. I certainly have no desire to build junk so I can compete with what amounts to a small factory. I’m out in the wilds quite a bit, and there is no end to the complaints of poor customer support and lack of real support for the vintage stuff - and almost everyone is absolutely tired of the K-77 tweeter. I am incapable of building an argument to continue its use. Sorry,

They can, with the right parts and instructions. Two of the parts he is asking about are not available. He started a thread in technical and then disappeared. ¯\_(ツ)_/¯

@JCBOHL Where did you go? Can’t help without more information.

Welcome back. You should probably read the sticky’s at the top of this section. I am possibly interested in high quality replacement PCBs, and I have an idea or two. Things have really died down. 1) The economy 2) Cost of parts and labor (as you found) 3) The fact that the network updating business has been dominated by four of us over the last 20 years. I sometimes wonder how much is actually left to do - coupled with the fact that younger people don’t have much interest in this. Those that do are pursuing HT or vintage on the cheap.

Except when PWK did it, lol.

What is wrong with your Forte II Networks?

An autoformer is a tapped inductor. The Klipsch units provide working inductance in parallel with the driver to produce a 12dB/octave slope for the midrange. Depending on the unit, sometimes a coil is put in parallel with the autoformer to maintain this response. The inductance on the aftermarket units is too high and cannot produce this result. The wire is coated with enamel. The 3619 is no longer available. The x tap is an additional output tap. The x and y taps on the 3636 are additional input taps. The x tap on the 3619 and 3636 do different things. You should probably contact the vendor with specific questions regarding their unit. 3619-ET is similar to 3636 but with additional output taps. This unit is not for sale (as far as I know). I don’t know about Boxler, but I don’t have the energy for this anymore, lol.

That doesn’t look like any PD-5VH I have ever seen. This will strain my memory … I think the B3 network was for the Hepner driver (K-52). On the plastic horn, the part number became K-57-K. The tweeter was the K-77. I believe this is the combo the B3 was designed for. Below is the driver you need. I would go from B3 to B2. https://www.atlasied.com/pd-5vh

I would say more like $200. This isn’t bad. When I had T2A’s to sell, they were going for $88 a pair. https://www.ebay.com/itm/355012752434?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=7dbacnheruu&sssrc=4429486&ssuid=1fiukgbcsqo&var=&widget_ver=artemis&media=COPY https://www.ebay.com/itm/256220195121?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=qurAOMZ2SYK&sssrc=4429486&ssuid=1fiukgbcsqo&var=&widget_ver=artemis&media=COPY https://www.ebay.com/itm/145286598750?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=GivAp-udRVi&sssrc=4429486&ssuid=1fiukgbcsqo&var=&widget_ver=artemis&media=COPY

I would just clean them up really good. The networks can be cleaned up too, and unless you smell or see oil (from the capacitors) - it is certainly something you can put off for a while.