StevePaul
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Posts posted by StevePaul
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5 minutes ago, RandyH said:
I never knew Saint Bernard or Bloodhound dogs had enough muscular strength to stand up Vertical , was he younger in that picture ? or is this at the full 235 lbs
He’s 11 years old now, but this pic was when he was about 3-4 years old. I would guess he was around 215-220 in this picture. He used to be quite athletic. I found him on the kitchen Island a couple of times. 32” wasn’t an issue for him to jump up on. Alas, he is getting old, like me.
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So…basically I kept the K48 woofer/passive radiator/enclosure from my original 1990 Chorus II’s.
I replaced the K79 tweeter with the LMAHL V2 from DaveA. I then replaced the K61 Mid with a A55G V2/K604 horn. I also replaced the 32 year old xover with a new unit from Crites.
I followed that up with placing a full shelf brace between the mid and tweeter. Finally, I affixed damping material on the mid horns & driver rear cups; and all the ribs of the woofers and passive radiator frames.
I burned it in for about 10 hours.
My first impression was that it sounded ‘unfamiliar’…a lot of wonderful sounds but it didn’t seem to be cohesive. I move the speakers around, shut doors, rearranged furniture. I put on background music for 36 hours straight. I followed this up by not playing them at all for a three weeks of weeks. I just wasn’t feeling the love…so, I took a break until I just wanted to listen to my music.
Put on some Chris Isaac yesterday…what came out was nothing short of amazing. I followed this up with some acoustic guitar, Whitney Houston, AC/DC, madrigal singers, even some barbershop quartet standards. Everything was sweet, tight, lively, and smooth. Tweeter were a touch string so I backed them off about 2db on my Denon AVR graphic equalizer.
They sound fantastic. I love the music coming out of them.
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19 hours ago, RandyH said:
19 hours ago, RandyH said:Big Eh , so what mix are we talking about , I cant figure it out ,
Sherman looks a lot like those Turkish dogs…but he is a Saint Bernard x Bloodhound cross. I asked a vet how he got so big with that cross; vet said it was just the quirk of genetics. This is Sherman with his paws on the floor taking a treat out of my hand….I am 6’5”…my hand is about 7 feet up.
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2 minutes ago, StevePaul said:
My daughter did a tic tok video of him a few years back, but I don’t have any vids. This is an unaltered pic of him sitting on an old couch with my wife…he is comically ridiculous.
He jumped on an accompanying couch, while playing, and cracked the horizontal wood supports along the bottom of the couch. I took the feet off of this loveseat so that the floor would support his weight…
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2 hours ago, RandyH said:
I would love to see Live Videos about Sherman .......
My daughter did a tic tok video of him a few years back, but I don’t have any vids. This is an unaltered pic of him sitting on an old couch with my wife…he is comically ridiculous.
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Sherman...our 234# genetic mutant. That's Clyde, our 155# Saint Bernard behind him; as Sherman plows through the Michigan snow.
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On 4/23/2022 at 9:41 AM, jjptkd said:
Digging around the net this morning found what looks to be a good deal on a new pair of these on Amazon $518 free shipping everywhere else they retail $304 each.
https://www.amazon.com/Faital-Pro-15PR400-Midrange-Replacement/dp/B00W46POYU
I actually purchased a used pair of AE TD15M's off of a gentlement here on this forum....so I am all set.
Thank you for taking the time to post this to me.
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1 hour ago, RandyH said:
it's Paska Easter Bread , sweet , with raisins , some add glaze or sugar , for spring , and the crop to come .
I will be baking some Paska here in the next couple of weeks. I add Turmeric for a more savory flavor and slightly yellow-er presentation. Good stuff!!
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2 hours ago, mopardave said:
Sounds great to my ears, but im yet to try them again with different attenuation. Might be the large ZXPC mid horn as it is very laid back compared to a k600 . In the Cornwall test article they say Klipsch attenuated the mids 5db over the k33e sensitivity.
...and it's only your ears you need to please
I just was surprised about the 5db that Klipsch had noted on the Cornwall.
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On 3/18/2022 at 9:33 AM, mopardave said:
UPDATE: Bought 2 new Crites 1526 woofers and although Crites suggests 5-10hr breakin, once installed, i could hear more bass. They filled the low end hole i was hearing. The Kappalite 3015LF i was using might be a better woofer for the combo at 100db listening levels, but not where i listen(70-85db). Has a richer sound, i really like it. Still attenuating the B&C DE85 mids at 8db on the zxpc horn. Checked out the B&C website for specs on the DE85 and the list the sensitivity at 108db, the 1526 is 95db. So i am running my mids 5db above the woofer, so a bit hotter. It does sound very nice and balanced. Will have to experiment with that more once the woofer have some time. So do you think that 5DB hotter than the woofer is in the range for attenuation or what is the norm?
I am surprised at that level of difference between the woofer and mid & tweet - 5 db - and that it still sounds good. I had Meniscus Audio create some new 24db/octave xovers for my Chorus II's, years back, and had them voice them progressively 3-4db down at around 15,000hz, from the woofer level at 60hz. Low level listening was good and absolutely sang like Pavoratti at 110+db with little shrillness (I used to have the kids in the neighborhood dancing in the middle of the road when I turned it up).
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Title says is all. Looking for a 4ohm pair of either the FaitalPro 15PR400 or Acoustic Elegance TD15M. I recognize that this is probably wishful thinking....but, doesn't hurt to try.
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6 hours ago, mboxler said:
I realize I'm one of very few that finds this interesting, but at least I have a handy way of documenting my results. Apologies to all that view this, only to immediately press the back button.
My experiments have revealed some interesting things (to me anyway) regarding low pass filters, in my case, to a K-33-E installed in my Khorns.
I never realized how much the voice coil influences a passive crossover.
On the attached plot, the yellow represents the voltage across the K33 in series with a 2.5mh inductor. Notice how the voltage starts to drop very early and continues to drop, eventually at a 3db per octave rate.
I've never used a zobel network, and decided to give it a try. I settled on a 4 ohm resistor in series with an 80uf capacitor, in parallel with the K-33. Since this gives me a pretty constant impedance of around 4 ohms from 200hz on up, I chose a 1.6mh inductor for the next test. A 1.6mh inductor is around 4 ohms at 400hz. The purple represents the K33 voltage. As you can see, it looks more like a first order low pass at 400hz.
I'm curious why zobels aren't used more often. With one, it's easier to shape the woofer voltage knowing that the voice coil inductance isn't messing with the frequency response of the crossover.
Voice coil inductance also affects how well the lower sensitivity woofers match up to the higher sensitivitysquawkers in the 400hz-800hz range. Take a woofer with an Le of 1.6 compared to a woofer with an Le of 0.6, ....and the 1.6 Le woofer is going to be general sloping down of several db's in that 400-800 zone compared to the 0.6 Le woofer. The presence region becomes more difficult to control/maintain with a high inductance woofer voice coil, without a zobel. Or...use a woofer that has a low voice coil inductance..mabye 1.0mH or less. Of course once you add in baffle step and other factors, it is more involved; but voice coil inductance is an important aspect to consider.
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1 hour ago, pcbiz said:
Add insulation to the mid horns. Kilmat is what I used. This will take out out the midrange honk completely. The mids will also blend much better with the highs and lows.
Cut some solid wood risers to fit your Chorus. A local carpenter made mine. They look just like the new risers Klipsch uses for the current Forte and Cornwall. The new style risers tightened up the bass very nicely. I was totally surprised at the sonic upgrade; I didn't even know the speakers had resonance issues. I'm pretty sure this is why Klipsch went to this new riser style.
Replace the wiring between the crossovers and drivers. 10AWG pure copper wiring gets more current to the drivers, and that little electron boost gets you a nice rise in presence, volume, and detail across all frequencies. The current production La Scalas use thicker wire, so I borrowed the idea from them.
If you're thinking about the tweeter, get Dave A's SMAHL tweeters for your Chorus. The titanium upgrade for these tweeters is nice, but Dave's tweeter is great.
The LMAHL V2 is what is called out for the Chorus/Chorus II, I believe.
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Reminds me of a review of a pair of Sansui speakers from the early-80's. The reviewer noted: "At least you get a lot of hardward for the money"....which was their highest praise for anything about the set.
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1 minute ago, StevePaul said:
The answer is (as with everything else) a definite "maybe they will make a difference". The very low inductance of the Acoustic Elegance woofers voice coils comes into to play, the higher in frequency your design expects out of the woofer. I ran the numbers on the AE TD15M-4 ($459-$599) as a possible replacement for the K48 in my Chorus II (if they ever give out), compared to the FaitalPro 15PR400-4, for about 50% of the price ($271) of the AE ...which also has a voice coil with vary low inductance.
For example, the TD15M-4 has an Le of .20mH. The 15PR400-4 has an Le of .60mH. The K48 has an Le of 1.00mH.
Below 300hz...the difference in the freq curve (when Le is taken into account) is very little. The F3 is about the same and the SPL at 300hz is close. But, at 300-400hz and higher, the low Le of the AE begins to have a telling affect. Below is a little chart I ran using Unibox (I like this little program). Notice how the higher in frequency the woofer goes, the more the Le rolls off the SPL's. At 400hz the K48 is starting to roll off the higher it goes, while the AE SPL's are staying the same. Where that comes into play is when your woofer meets a Mid/Tweet at between 400-800hz. The AE will have a minimum SPL 3-4db greater SPL in this region (all other things being equal) compared to the K48 with the higher VC inductance...which makes mating the woofers and tweeter with crossovers 'maybe' easier. I think it can be said that the frequencies between 300hz and 800hz will have more 'presence' than with the K48 in the Chorus II.
I would imagine that at 300-400hz and below, box tuning can mitigate any frequency related differences between the woofers. Distortion figures are probably lower in the AE and FaitalPro, but whether or not it could be heard in the 50hz-350hz region is debatable. I have reviewed every Eminence woofer that might replace the K48 and none of them (on paper) are the equal of the TD15M-4 or 15PR400-4 (or K48)....although at 50% to 75% cheaper, the Eminence woofers are the obvious better value.
If you have the cash and are crossing over above 400hz, as a direct radiator, the AE TD15M-4 and the FaitalPro 15PR400-4 are just plain hard to beat. Neither of them bests the K48 in the lower regions below 100hz. The K48 is a beast down there. If I had the money, I would purchase the AE TD15M-4 (but I don't). In the future, I will most likely purchase the FaitalPro 15PR400-4. FWIW....these are some facts and figures, with my added in opinions. I could be all wet, but I don't think so. YMMV>
100.4 101.3 98.2 2.83V 96.8 97.6 95.5 1W1M 1 1 1 # of Woofers 2 2 2 No. of Ports 4 4 4 Port Diam 4.1 4.1 8.00 Port Length 120 120 140 Vb 47 48 35 Fb 46 49 43 F3 0.73 0.82 0.98 Peak db 77 83 117 Peak at hz 95.4 95 94 SPL @ 50hz 97.0 98 96.2 SPL @ 200hz 96.8 97.8 95 SPL @ 400hz FaitalPro AE Klipsch 15PR400-4 TD15M-4 K48 A zobel network on the woofer could negate the higher Le of the Klipsch and Eminence woofers and mitigate the issue. But, it makes me wonder if there is more going on with a better designed motor when a woofer's Le is well controlled and no zobel is requred on the woofer. ie...maybe it's just a better performing woofer in the 400-800hz region.
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On 1/29/2022 at 5:21 PM, VDS said:
I seen a lot of comparisons on the forum between Eminence, Crites, and Klipsch woofers, but extremely little on any other brands. Also lots of discussions on how to get lower frequencies, but not so much about articulation, speed or tone.
Thanks
The answer is (as with everything else) a definite "maybe they will make a difference". The very low inductance of the Acoustic Elegance woofers voice coils comes into to play, the higher in frequency your design expects out of the woofer. I ran the numbers on the AE TD15M-4 ($459-$599) as a possible replacement for the K48 in my Chorus II (if they ever give out), compared to the FaitalPro 15PR400-4, for about 50% of the price ($271) of the AE ...which also has a voice coil with vary low inductance.
For example, the TD15M-4 has an Le of .20mH. The 15PR400-4 has an Le of .60mH. The K48 has an Le of 1.00mH.
Below 300hz...the difference in the freq curve (when Le is taken into account) is very little. The F3 is about the same and the SPL at 300hz is close. But, at 300-400hz and higher, the low Le of the AE begins to have a telling affect. Below is a little chart I ran using Unibox (I like this little program). Notice how the higher in frequency the woofer goes, the more the Le rolls off the SPL's. At 400hz the K48 is starting to roll off the higher it goes, while the AE SPL's are staying the same. Where that comes into play is when your woofer meets a Mid/Tweet at between 400-800hz. The AE will have a minimum SPL 3-4db greater SPL in this region (all other things being equal) compared to the K48 with the higher VC inductance...which makes mating the woofers and tweeter with crossovers 'maybe' easier. I think it can be said that the frequencies between 300hz and 800hz will have more 'presence' than with the K48 in the Chorus II.
I would imagine that at 300-400hz and below, box tuning can mitigate any frequency related differences between the woofers. Distortion figures are probably lower in the AE and FaitalPro, but whether or not it could be heard in the 50hz-350hz region is debatable. I have reviewed every Eminence woofer that might replace the K48 and none of them (on paper) are the equal of the TD15M-4 or 15PR400-4 (or K48)....although at 50% to 75% cheaper, the Eminence woofers are the obvious better value.
If you have the cash and are crossing over above 400hz, as a direct radiator, the AE TD15M-4 and the FaitalPro 15PR400-4 are just plain hard to beat. Neither of them bests the K48 in the lower regions below 100hz. The K48 is a beast down there. If I had the money, I would purchase the AE TD15M-4 (but I don't). In the future, I will most likely purchase the FaitalPro 15PR400-4. FWIW....these are some facts and figures, with my added in opinions. I could be all wet, but I don't think so. YMMV>
100.4 101.3 98.2 2.83V 96.8 97.6 95.5 1W1M 1 1 1 # of Woofers 2 2 2 No. of Ports 4 4 4 Port Diam 4.1 4.1 8.00 Port Length 120 120 140 Vb 47 48 35 Fb 46 49 43 F3 0.73 0.82 0.98 Peak db 77 83 117 Peak at hz 95.4 95 94 SPL @ 50hz 97.0 98 96.2 SPL @ 200hz 96.8 97.8 95 SPL @ 400hz FaitalPro AE Klipsch 15PR400-4 TD15M-4 K48 -
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13 minutes ago, Coytee said:
Back when I had my EV "D's" (bought 1978) one thing I thought was cool about them was.....they had this light bulb. I really had no clue how it worked. I rarely saw them lit. In fact, I can only think of once when I saw one light up (was in college at the time.....yeah, they were stuffed into the dorm room along with the LaScalas)
Here's a schematic for them. Parts number 8, 35, 28 (illustrated at the bottom of the diagram) They had the bulb on the inside of the speaker but then a clear, plexiglass type ""rod" that extended through the cabinet, flush with the exterior. So looking at the outside you only saw this dot and this dot is what would glow when they were in protection mode, letting you know. The "light" is at the top of the lower half of the cabinet, near the right side corner.
Just throwing this out here since I think this is interesting stuff. I doubt it will add any value to the conversation.
Cool in the fact that the EV 'D' and their vented midrange were the coolest thing back in '78!
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Good looking BH. People are always surprised at how big and strong BH can be.
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On 1/21/2022 at 6:33 PM, Dave A said:
I was asked by Khornucopia, a poster on this thread if I minded him posting similar wood. I start threads and sometimes more then half the fun is seeing how many directions it can go. You never have to worry about me giving you the stink eye and if I need a serious answer quickly I know I will be treated right.
I have to admit I thought of Turner and Hootch with that big dog flapping lip thing and so that was my reward for the day here. Picturing the windows in the house and cars. at @StevePaul
Truth...Dave. I also have a large male Saint Bernard and a 125# Bloodhound. I think I remember you mentioning living rural in Tennessee....of which Bloodhounds seem endemic. Michiganders don't recognize Bloodhounds right away. But...yes, slingers on walls, furniture, windows, and speakes, are daily cleaning opportunies. We actually have a 'dog car' that we use to transport our canines...
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I just purchased these. I live in Metro Detroit and will be picking these up in the next day or two. I needed those K604 horns for the screw in A55G/2 mid drivers that I purchased for my Chorus II build. Along with the LMAHL V2 drivers that I have on-hand, new Crites x-over, and the venerable K48 woofer already in the Chorus II, I believe my build is ON!!
Psyched!
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Are these still available?
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11 hours ago, DonH said:
Hello,
I have upgraded my Chorus 2 with the A55G and the KP301 horn. I was able to find the horn on Ebay, hard to find. I initially mounted the a55g to the stock horn with an adapter, but the sound was not right. I realized that the a55g has the compression "bullet' as part of the throat of the driver itself. The stock chorus and forte mid horns incorporate the compression bullet as a plastic section of the horn throat, therefore you now have two compression bullets. ( pardon me if "bullet is not he correct term)
I can say that the a55g is a huge improvement over the stock driver. Just finding the horn with the threaded interface is difficult. But the kp301 horn fits right in place and from the outside you can't tell a difference.
I would not recommend the Crites crossover unless you just want to replace the original. For that purpose the Crites is fine, and can be improved with point to point wiring, replace the iron core inductors and sand cast resistors as well.
I may be a benefit in the very near future as I am planning a trip to GR Research in Texas. I am taking the Chorus to them to be measured. They will then design a crossover accordingly. (I currently have the Crites installed) He will then have the specifications and possibly a kit available for purchase. He did the same with a customer that brought in a Forte 3. Huge improvement. Video of this upgrade is on Youtube, GR Research channel. I'm thinking about taking a Forte 2 as well just so he can offer a crossover kit to the public.. I have a pair bone stock.
Thank you for adding to this conversation. The Chorus II are a great set of speakers. I am continually on the outlook for the KP-301 horns. I look forward to seeing what GR Research does!!
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2 hours ago, Curious_George said:
There has to be an impedance curve from someone here on the forum of a K-48. In any event, we can get the K-48 rolled of some how to mate with the ZXPC horn. If you need help, let me know.Thanks for the offer. We shall see how this rolls out.
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8 minutes ago, Racer X said:
Was also inspired by pictures of the large format horns plopped on top of various bass cabinets. This is an amazing upgrade well worth the trouble of trying to integrate the various drivers. Will be following this thread closely. My Heresy with the Crites CS top end: JBL D405 on 2380 copy horn, Crites B&C 120 tweeters:
Part of the problem with modifying the Chorus speakers with any off the shelf passive 3-way xover is that the Chorus K-48 woofer (which I really like) is not in any of the other Heritage speakers (mostly K-33's, etc). Combined with me not being a passive crossover expert, or wanting to go 3 way active, puts me in a little bit of a bind. I'll figure it out...just have to ask for some help along the way.
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Jokes?
in Lounge
Posted
My ex-wife found my speaker building obsession, and speaker listening sessions, somewhat over the top and frivolous. She would jokingly ask my friends if their favorite listening chair ensured that their ears were 39" off the floor...or....if there tweeters were at ear level. She even brought out a tape measure one time when I had some friends over listening to some new speaker builds...and measured from floor to ear. I'll admit it was funny. But, I believe this is what she wanted to say when we split up......