geoff.
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Posts posted by geoff.
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@RichardRed, I use this stuff to safely remove stickers from any gear. I also use it with the black marker trick to touch up black speakers without leaving the sheen.
It’s the stuff car manufacturers recommend for the weatherstripping once a year (it’s in the back of the manual, lol). There are other brands but this one goes on sale pretty cheap a couple times a year at Princess Auto, our equivalent of Harbor Freight.
I usually let it soak for several minutes before trying to remove stubborn stickers. Old paper labels will turn translucent and then you know it’s saturated.
This may sound like too much work, but to make sure I don’t accidentally scratch anything I usually wind up using my thumbnail as a scraper, and paper towels to remove the excess.It leaves a dull shine that fades with time.
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Mike, thank you for your detailed reply, as always !
No headaches, just more pieces of the puzzle.
I wondered recently why Klipsch would use a 4mH coil and 100uF to produce the woofer filter when a cheaper 2.5mH and 150uF-ish combination would produce a similar value.
This new light you shed may be the reason, or part of it?
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I am not sure if I understand this correctly, but I don’t think you want to go too high in a bass bin ?
From what I have heard, vocals coming out of a bass bin don’t sound right.
I encourage all thoughts on this.
IF(!) I understand the workings of the various woofer filters used in Klipsch crossovers, the second order 4mH/140uF combination used in the AL-3 results in a 212Hz cross and the 4mH/100uF combination used in the AK-3 Klipschorn results in a 251Hz cross. But, the Klipschorn bass bin dies out sooner than a La Scala so the vocals go with it, in effect a much steeper slope.
I’ve been playing with different crossover designs on my La Scalas and have found the AK-3 woofer filter to be the limit before vocals get muddy, it also seems to really help crossing the squawker as low as possible.
But the conundrum here, is I’ve heard Belles (with a bass bin that extends to 500Hz) and did not find them muddy in the least. I also own and enjoy Peavey FH-1 bins that go solidly up to 500hz, and sound great, albeit with crossovers designed for the La Scala and Khorn - so, still crossing much lower than the limit.
Most recently I built an ALK CSW clone with the standard values (3mH/80uF - 325Hz and 33uF - 600Hz) to try on my La Scalas and it left me flat. Not at all worth it. After I jumpered another 20uF on the woofer for 290Hz and 13uF on the 33uF for a 430-ish Hz cross it sounds WAY better, to me. Almost as nice as the ALK design for the Khorn - it uses a 54uF cap to cross from the squawker around 370 Hz and the AK-3 woofer filter.
Once again, all thoughts are welcome here.
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And gone in 60 seconds
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Here in Canada you would be paying over a grand for just the tweeters and the crossovers, IF you were lucky enough to find a pair of ALK Universals cheap.
As mentioned those are the earlier ALK Universals with better parts than what is currently being offered for $500 USD (685 CDN!) and the SMAHL tweeters are $325 USD (445 CDN!). Those prices do not include shipping and customs !
You are practically getting everything else for $500.
That's a go from where I sit, which is in front of a pair of beat up LSI Splits with the same tweeters and a DIY ALK Universal clone.-
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Crites used to put a date on a build sticker on the back.
But looking at the boards those are, and I am reluctant to use this term, “post-Covid”.
These are new.
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@JerrysMiddleFinger, a little late to the party, as usual, but how “easy” did the Ti diaphragms go in ?
I read the caveats about them and still managed to snap the “tinsel” leads on one of the diaphragms I swapped years ago. Any flexing, or forcing of the assembly is a recipe for disaster.
Do you have a multimeter you could check them with ?
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maybe a silly question, but what drivers are in the La Scalas that you are using the AAs in?
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@KT88, more confusion for you, your first picture shows a K-33-V ?! …your welcome, lol
As to your thoughts about using the woofers from your La Scalas in the Khorns and buying new Eminence woofers for the La Scalas, from my experience that is pretty sound thinking. Unless… the bass bin for YOUR model of Khorn was designed differently from the ones using the K-33-E ? I thought I had read something on this forum about a bass bin change, maybe in the AK crossover versions, so maybe of no consequence to you ?
Regarding the La Scalas, I gave the Kappa 15Cs a run in my “regular” La Scalas with the AL-3 crossover years ago and was instantly taken aback by the increase in all aspects of their performance compared to the K-33s they replaced. The best word I could find to describe the impact was “supercharged”.
I now own LSI Splits with the K-43 woofers, and the Kappa 15Cs are in my FH-1 bins. I whole-heartedly preferred the 15Cs in the Peavey bins as well though when compared to both the square magnet and round magnet K-33s I have floating around.
One caveat though is that the foam gaskets on the Kappa 15Cs need to replaced with a hard paper gasket kit. I believe a significant amount of the energy and dynamics the woofer produces would be lost by having a “shock absorber” between the woofer frame and the motorboard. I had originally gotten around this necessity by torquing down the screws so tight the foam was compressed into the woofer frame, but in retrospect I was lucky I didn’t strip or snap a bolt, or warp the stamped frame. Even with torquing them like the bolt pattern on a car tire. My current pairs have had the foam gaskets replaced with paper.
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It looks to me like your LSs are 1988. Klipsch was a real mixed bag as they improved each model with available inventory. If you look at the schematic for the AL-2 it looks like they used up their inventory of 2.5mH coils to form the 5mH value used in the AL-3, same values, same schematic, different parts.
I see your pair has the “improved” resin K-401. (Spider senses tingling)
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^^^^ THIS ! ^^^^
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a little late to the party, nice day for yardwork up here
Regarding the tweeter, I have one poly, two phenolic and one titanium diaphragm I just hooked up to the meter. It looks like 8.5 is an average reading between the lot.
Parts Express has the polyswitches for peanuts, and if you are in the States the Crites and SimplySpeakers titanium diaphragms are free shipping (over $50). SimplySpeakers looks to have a phenolic “style” replacement too but they are not original equipment. I really liked the titanium TWEETER diaphragms, some don’t, so do your research on those.
I recently put the phenolics back in the 301s to sell them and did not find anything immediately lacking in their presentation, they just sound better to me with Ti diaphragms. They sounded even better with Dave A’s LMAHL with the DE-120s, the same lens with the DE-10s needed a little attenuation, to my ears.
If you are going to replace one, you may as well get a matching pair and have a spare, that you’ll never use, lol.
When you get them up to snuff be sure and let us know your impressions.
Cheers,
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Covid killed a fair market, too
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Maybe this is the replacement ?
Interestingly the crossover on this model is 750 Hz, very close to the Cornwall 4.
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Sold
in Garage Sale
Yeeeow !
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those are real, and they’re spectacular
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45 minutes ago, Woofers and Tweeters said:
Bose 901 was unlimited, until they weren't lol.
The 2x the speaker rating is from a Klipsch brochure. I will try to find it, later lol
Headroom baby, woofers love watts.
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yikes, are the tweeters still tweeting ?
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@Jeff Matthews, everything changes when you change anything, whatever balance you have now will be different if you take a different path. Whether you like the change or not is entirely your business. Different is fun too, but the engineers had a plan.
It looks to me like you have type A crossovers in there right now. I am going to ASSUME the tweeters are the round magnet Alnico version and the K-55 is the single phase plug version as well.
The type of drivers in your speakers are an important consideration when choosing a path. There are limits both in frequency response and power handling depending on what drivers you choose to use.
If you like the way they sound now, new polyesters will preserve that presentation. Probably make it a little clearer considering the age of those capacitors in there now.
@jjptkd’s idea about trying different caps is a great idea. With a little effort and a very small outlay you can be sure which path you prefer.
I really enjoyed a pair of Crites A/4500 crossovers I had recapped with polyesters in a pair of LSIs (before Crites offered a copper version), albeit with aftermarket tweeters.
When pushed a little harder they held it together better, but at low to moderate levels, the “bright” Sonicaps were more revealing. Your ASSUMED alnico tweeters won’t appreciate being pushed hard, so that is a serious consideration, replacements for them are not falling off trucks.
IF I understand the driver complement in your Khorns correctly, I would expect the type A crossover using a K-55 that rolls off at 4500hz to sound very similar to what I was using.
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Klipsch had a couple of sleepers I didn’t know about until I found this forum. A little taller and about the same size as the Forte’s footprint, but only in black, the Tangent 4000, and especially 5000 are outstanding performers.
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the crossover and midrange driver might help narrow down the year a little closer if you can get a picture of them
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Get a load of this...Ojas Collab
in General Klipsch Info
Posted
I absolutely agree with this observation. Hearing is believing.
I recently sold a pair of KP-301s to a gentleman that was on his way next to pick up a pair of H4s.
In a follow up conversation he mentioned the H4s were "very smooth and a real pleasure to listen to, but do not have the scale of the 301s, not even close".
My first pair of Forte 2s were purchased from a gentleman that was also selling Belles (way above my paygrade then). He had the Belles playing when I arrived and when he switched to the Forte 2s my heart sank, lol. They were wonderful speakers in my price range, but they weren't Belles.