pcbiz
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Posts posted by pcbiz
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45 minutes ago, CWOReilly said:
Those are DaveA's SMAHL machined tweeter lenses with B&C DE120. Well worth it!
My second pair. Today I'm listening to more of my very familiar music. They are really impressive with my Scalas. Combined with the A55Gs they produce a lot more studio or stage detail. A better sense of space.
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New tweeters and mid drivers are in. The sound is more relaxed with more detail. A wider sweet spot as well with the tweeters.
When I upgraded my Heresy I pair with SMAHL tweeters, the sound was noticeably better. This time, with my La Scalas, the change is not as dramatic, but still very pleasing.
With the A-55-G/2 drivers, I'm hearing more drum detail and strings. Again, the change was not as dramatic, but very pleasing. After listening for an hour, I could tell when Frank Sinatra was experimenting with mic positions and vocal techniques. Hadn't noticed that before.
It's really interesting to discover that these La Scalas are just as much musical instruments as a trumpet or upright bass. For instance, I experimented with the mid driver gaskets. First, I installed skinny O rings with the A-55-G/2s, assuming this would improve the air flow. On listening, I could tell that the mid horn was not getting the right air. So I switched out the skinny O rings for the normal rubber gaskets, and now the air is back. The presence and highs are well represented.
I'm saving all of my old parts this time. I'd like to audition everything again when my ALK CSW-450s get here.
The most dramatic upgrades so far are:
- 10 AWG pure copper speaker and terminal wire
- An audiophile AC power cord
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2 hours ago, Madman1 said:
@pcbizso…any chance of delivery to Tennessee? 😁
Yeah... but that would add $350 for the move.
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A bunch of folks probably called the seller telling him to raise the price or not to sell. That's what happened to my La Scala seller a few weeks ago. Fortunately, he still sold them to me.
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I lowered the price to $900.
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More sonic candy just arrived! These little guys are pretty heavy.
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Just arrived!
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... and the answer is... We'd have to ask the Chief to give us a modern design, so our old Chorus IIs can sound as good as the new Cornwall IV.
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4 hours ago, Deang said:
Just curious -- did you specify Heresy when you ordered them?
Yes, I specified my Heresy I pair. The sound was excellent.
I just wish I had the Universals here to try on my Chorus IIs. The design is universal, so it adjusts within a certain range to match woofers and squawkers. In theory it sounds great, but Al says he doesn't support the Chorus II. He offers no details or explanation as to why. -
3 hours ago, Deang said:
lol. Dude - seriously?
Seriously. Imagine that... I figured it out without a degree in audio physics.
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10 minutes ago, jimjimbo said:
And?
Looks like #4 is the winner. 6uF cap. I'll look for an alternative for better midrange tone. The woofer caps are a different brand, not Sonicaps. The woofer sounds fine to me right now, so I'll experiment with the midrange first and see what happens. We live in the midrange.
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1 minute ago, jimjimbo said:
Can you read a schematic?
Funny you should ask. I was just looking up the Chorus II schematics. Yes, I can read schematics, but with the wiggly puzzle that is the Crites Chorus II crossover, I just wanted to cut through the guesswork.
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Thanks for the input everyone. So between 4 and 5, which one would be for the squawker?
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36 minutes ago, Dave A said:
As avguytx stated #3 is the one. I have a question here and I am not trying to be flippant. If you can't ID components how good is your soldering skill? If you do not know what you are doing you can have problems.
I recapped my Heresy I crossovers. Then I switched the boards for ALK crossovers. My soldering skills are normally for vintage tube guitar amplifiers, so crossovers are easy.
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40 minutes ago, Dave A said:
Those are good components although the Sonicaps are more money than they are worth and I have quit using them. The only thing Bob and I ever disagreed on was the electrolytic cap used in the woofer circuit. He called it basically a garbage can and nothing fancy needed. I use a $19 68uf Audyn cap and I think they are better sounding and will last longer than electrolytics. To do this in Sonicaps where the highest value they make is 33uf would take two 33uf and one 2uf soldered together to get that value and would cost $$$$$$.
I don't think the mid range is the problem here and you might ask what others have done to their Chorus speakers to improve sound and not limit your question to the crossover in the title.
I found the 68uf Audyn cap on Parts Express. They're $18.69 right now. So the one I'm replacing is... number 1?
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27 minutes ago, Dave A said:
Those are good components although the Sonicaps are more money than they are worth and I have quit using them. The only thing Bob and I ever disagreed on was the electrolytic cap used in the woofer circuit. He called it basically a garbage can and nothing fancy needed. I use a $19 68uf Audyn cap and I think they are better sounding and will last longer than electrolytics. To do this in Sonicaps where the highest value they make is 33uf would take two 33uf and one 2uf soldered together to get that value and would cost $$$$$$.
I don't think the mid range is the problem here and you might ask what others have done to their Chorus speakers to improve sound and not limit your question to the crossover in the title.
Good idea. I changed the title. I've also added Kilmat to the mid horn, and that really helped a lot. Got rid of the hollow shouty thing completely.
Now that I'm hearing the mids much clearer, I want a way to space the instruments and vocals out. They sound congested compared to my Heresys with ALK crossovers.
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I have installed Crites Chorus II crossovers in my old Chorus II speakers, and they came to life. They are very nice. However, what caps or coils can I change on this board to get more clarity and detail from the squawker, just a little closer to the Forte III or IV sound. I know how to solder and use an ohm meter. That's about it.
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7 hours ago, babadono said:
Yes Sir, tweeters that blow at 5 watts need 10 awg wire. ...Meanwhile back on earth....
They definitely like the 10 AWG wire, but I'm pretty sure I'll never hit 5 watts with them in this apartment. The greatest threat to these tweeters are Dave's SMAHL-V2s.
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Silent Feet, aka "hockey pucks". It turns out my carpet was having a muting effect on the La Scalas. They are louder and clearer with hockey pucks.
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Nicely restored black La Scalas. Looks like we're getting back to 2019 prices.
https://www.facebook.com/marketplace/item/1505296593148083/
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10 hours ago, Terry Palmer said:
Do you still have the Chorus II crossovers? I’m looking to buy some?
Sent from my iPhone using TapatalkI guess we're both looking for a rebuild. There were a couple of forum members rebuilding Chorus II crossovers a few years back. Haven't heard from any recently.
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11 hours ago, Marvel said:
I, like a few others here, have adjusted the midrange, dropping it down a few db. Turning up the gain then brings up the apparent bass. Not the same as adding a sub, but you might be surprised at how much more full they sound.
Excellent idea. That's how the crossovers I'm waiting on work.
My first La Scalas
in Technical/Restorations
Posted
Today I put the K55V back in with new diaphragms. I put my K77 tweeters back in as well. The new midrange diaphragm is really nice, an absolute must if you have 40 year old K55Vs. I actually like the setup now better than my new tweeters and mid driver.
Another reason I reinstalled the original drivers is that my JEM Audio caps just arrived. I'll install those tomorrow.