DavidF
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Posts posted by DavidF
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On 6/20/2022 at 10:45 PM, Rolox said:
There is something wrong in the gain structure of your system, I think. Are you sing your Freya + in active mode? Even in active mode, it's not a high gain preamp, if your source is on the low side, it might feel like there is not enough "juice". It's not about the amp's power output, it's about how much voltage you give it at the input.
Agree that if you are using the pre-amp in passive mode that your volume control gain setting will likely be in the high range even with high-sensitivity speakers. That does not sound out of line.
If you are using the tube active stage (+12dB) then yes, it seems a little strange to have the volume control that high up in range. But, as already mentioned, the system gain may just need to ride high on some tracks and not so much on others.
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Are you saying you have a Heresy system but lacking a tweeter? And you need to find a replacement? I would still use (or find) a k-76 tweeter. This keeps the overall spectrum balanced in the speaker system. I think that the K-76 is easier to locate, as well. Good idea to match the tonal characteristics of the R-L-Center, though, if you have titanium drivers in the Chorus.
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If they sound best on their sides, then that is what works. Don't discount a vertically oriented horn, though, just because the coverage in narrower in the horizontal plane in that position. The narrower coverage pattern can often integrate better with the woofer's narrowing coverage pattern that enhances imaging, even off center.
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A jump ahead to the conclusion may be that the smaller format Forte just works best in the room. A long time ago I heard the JBL L300 in both a smallish living room and again in a large room not long after. At that time and with that speaker model, the larger room made a big difference (for the better) in the cohesion of the sound and soundstage around the speakers. Listening distance was several feet further away. Ditto for the distance to room boundaries around the systems.
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Something like the massive car front end bras that were big a number of years back. Maybe it holds some value if you sell the car someday but every other day all you see is a big black blanket on the car. But, on point, It might make sense to have glass tops in the closet to pull out when entertaining or you have young ones in the house. Otherwise, why spoil the appearance of the natural wood?
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On 7/10/2021 at 5:15 PM, Islander said:
Thanks for the pictures, and welcome to the Forum!
I see Mr. K. always has his rack of pens in his pocket. I wonder what the circular device is?
Ha! Yes, a pocket protector...and I'll go with a pencil sharpener.
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On 7/10/2021 at 5:04 PM, Zen Traveler said:
Wow! It's the first time I've watched the videos and it blew my mind I recognized Jerry Austin who sold me my first stereo at Custom Audio in Little Rock, Arkansas back in 1980! He's in the tv interview that 00000001 posted and I recognized him as soon as I saw him--lol! Thanks for posting because it brought back memories.
Know what you mean. Always fascinating when some random snippet on social media can trigger long-dormant memories.
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Get some unsalted shelled walnuts at the grocery store. Fresh nuts have a certain amount of oil in them you want on those scratches. Literally rub the nut into the scratch areas in all directions. It will crumble a bit and make a mess. Wait a few minutes then rub out the area with a clean cloth.
This is about as cheap and easy solution as you get. It won't remove the scratches but will greatly disguise them.
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9 hours ago, olbonco said:
Thanks Alexander,
Can the 2.75mH be a air core? Does the mH have to be exact? Can it be 2.7 mH or .15 mH. Seems hard to find exact measurements when looking for components.
Personally, I would have no issue deviating from spec as you mention. There is always a a fair amount of variation in component specs. Sometimes they average out if you replace with a lower value, but not always. Capacitance meters are not that expensive if you want to go that route. Remember, you will need to scrape off the wire varnish if you reduce coiled wire in a higher value piece.
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Very nice, for sure. Some like all black finishes but for me the exposed wood grain finish is the only way to go.
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So, some comment on the pop report. That does not sound like an issue related to the caps in your xover. It is more likely that you are bottoming one or the other woofer coils at the very high sound levels you mention. If this is the case, then there is no quick remedy for that other than backing off the drive power. Are you using equalization of any kind to boost the bass response? Check on the passives in the back to make sure they are in good shape and not leaking air.
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The crossover topology for the III has some significant differences from the I that may be of interest if you drive the speakers to high sound levels on occasion. The III crossover may be more effective than the I in dealing with high power to the drivers.
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The foam is there to suppress some of the sound energy bouncing around in the enclosure.
As sound waves pass through foam, fiberglass or similar, some of that energy is converted to heat from the friction of passing through the fibers/cells.
The amount of foam or enclosure stuffing is always a balance in what you are trying to achieve. Here the amount of foam is relatively small and therefore targets mid range frequencies that could set up standing waves.
Using a large amount of stuffing in a sealed enclosure may act in a way that allows the woofer to "see" a larger enclosure. But this also changes the Q of the speaker considerably so some amount of thought should be given in how you are affecting the enclosure and woofer as a system. Personally, I do not care for the sound of highly-stuffed enclosures. Too much constriction in dynamics. I have tried this on limited occasions so experiences may vary.
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Just to be clear, you purchased the equipment direct from Klipsch? Not a dealer?
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I have an ATI AT602 I have had for a long time. I use it as my dead-center-of-summer amp with the original Forte speakers. It does not have any audio cache to speak of but it is a very good quality, build and completely neutral, and runs barely warm.
As an out of left field suggestion look at the Schiit Audio Aegir. Modest in size and power (20 watts) but runs very high into Class A bias and is a stellar performer for $800.
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11 hours ago, Automojo said:
Randyh, explain the “definitely not” ...it seems to use the identical woofer as the 3’s, which are sealed.
And sealed boxes are forgiving to slight increases in volume by their very nature.
Alternatively the internal volume can be easily adjusted to the 3’s spec.
I fail to see any issue with this...especially if you happened to have bass issues because of the rear port in your set up...
The issue with plugging the port on many speakers is because the woofers EPB isn’t designed for sealed alignments... and can cause a number of electrical, and physical issues.
Not the case here as the woofer appears unchanged from the 3.
The crossover points may have changed between the woofer/ mid, but I doubt this would cause a big issue.
Ine could easily find out by some experimentation
Regardless... This is only an issue if you’re having problems with the rear port configuration....
HIfi has always been a hobby for me, I probably take after my father he built all his amplifiers preamp’s and speakers from kits
I don’t have an issue experimenting and making things work in my listening environment... and learning how things work, particularly speakers because in my opinion nerves the most important link in the chain, and can have the biggest issues because of the listening environment...
Regardless the “definitely not” comment seems to make a little sense to me, unless I’m missing something?If you block a port in an enclosure designed with a woofer optimized for that enclosure size you will end up with a too-large enclosure and a low-Q bass loading for a sealed system. You will end up with a shelved low bass response tapering off up around 200Hz and well down in bass response below 100 Hz compared to that same woofer in the ported enclosure. You might gain some power handling but you shoot the bass response all to heck. I would not suggest to anyone that plugging the port of the IV, or adding a vent to the III is a good idea.
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1 hour ago, jwc said:
Again, the woofer plays music but no low end and the multimeter impedance check matches the other three woofers.
I uninstalled it....which was a PITA. It's like the cone is glued. Won't move at all.
Do you the know the make and model of the woofer? Does it have a vent hole in the magnet? There seems to be enough movement to make sound waves but something is limiting the travel. So, a warped coil former, loose coil winding or something in the gap.
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On 5/30/2018 at 1:47 PM, ODS123 said:
The review was largely positive which certainly jibes w/ my own impressions of the Heresy III's. ..Still there's much about the review that annoys. It seems strange that one reviewer (Guttenberg) would tell another about to review a pair of speakers " (exclaiming) ..Those aren't audiophile speakers. Those are party speakers!" For one, what the hell does that that mean and why would "party" and "audiophile" being mutually exclusive? I'm an audiophile (of sorts) and I like music at parties, so...??? And two, how about one reviewer caring enough about his craft and enough about the reader to NOT taint a fellow reviewer with expectation bias by making such a strong and prejudicing statement?
Wouldn't it be nice if reviewers were forced to share their initial judgements of speakers before knowing what they look like, their size, who makes them, what kind of drivers they employ or what has been said of them by other reviewers?? Perhaps hear them from behind a visually opaque but sonically transparent screen before being allowed to take them home for an extended listen? Do you think this would affect what we read? I sure believe so.. ...Hey, an audiophile can dream, can't he??
Annoying is just what it is. What has come about lately in the audiophile community where "we" can finally accept speaker designs such as Klipsch? After decades of disdain and indifference? I hope that that it means that the elements that make reproduced sound seem more real (to paraphrase Guttenburg) have finally cracked through to the top of the list of sonic priorities.
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20 hours ago, Netscout said:
Just unpacked new KD15s. Can tell you that they are slightly larger than the originals, and they don’t fit flush into the hole. Will require some manual filing to slightly enlarge the hole on each speaker. Apparently no pain, no gain.
Do they fit down part way into the cutout? I was thinking cutting out a thick casket of cork or similar that will seal off the fitting without having to set down so far into the cutout. Appearances may differ but they are on the back of the speaker.
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10 hours ago, jwgorman said:
Cornwall II didn’t change woofer position right? That’s the III change.
Yes, apologies, I was not following the thread too well back to your original questions.
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On 4/7/2018 at 10:38 AM, jwgorman said:
Any of you guys lined the inside of Cornwall IIs? Notice a difference? Always wondered why Klipsch dropped lining when the Cornwall IIs came out.
The lining and foam mentioned are used to mitigate standing waves. The variables with standing waves include distance from wall to wall and speaker location within the enclosure.
The foam as used in the Heresy catches the waves roughly in the middle of the longest dimension, top to bottom. This where the velocity of the reflections are the greatest.
The padding in the earlier Cornwall attacked the waves at the cabinet walls where pressure variations are the greatest. In both situations the need to provide friction to the wave movement or pressure variation.
The woofer location in the Cornwall II was changed. It should be considered that this change in location changed the wave pattern internally enough to avoid the need for damping.
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On 9/29/2017 at 9:18 AM, Confab said:
Here is a link to the review on youtube. It is interesting to listen from 1:05 to 1:36. He states he has a problem with talking about the Forte iii as an audiophile speakers. Then backs that up by listing three speakers that each have a quality that is superior to the the Forte iii, and then immediately says that the Forte iii sounds more real than any of the three. Did He just let the mask slip? I thought real was what audiophiles were after.
Besides (and this might be picking a small point) how does the B&W being smoother or the Maggie being more open disqualify the Forte iii from being an audiophile speaker?
All speakers have differing strengths and it is relevant to match the strengths to ones own tastes. Maybe the Maggie shouldn't be considered an audiophile speaker because it isn't as smooth as the B&W, doesn't image as well as the Elac, & isn't as dynamic as the Klipsch.
I think for a lot of reviewers the review is half written as soon as they see the nameplate.
https://www.youtube.com/watch?v=DYOs7zuFJXA
"Fun speaker?" Come on. That's a back-handed compliment for sure. For too long dynamics in the reproduction have been low in priority in the audiophile hierarchy. For me it is high up there. Tonality is important, a sense of blend in the overall response is needed but things like imaging and "smoothness" are not so important if dynamics are lacking. What is smoothness anyway? Smooth in terms of response yes but smooth terms of audio perception? There is a point where you can put so much crème in coffee to smooth the flavor that you lose any sense of what coffee tastes like.
Fact is many folks just don't like or appreciate compression drivers on horns in speaker systems. Maybe a prejudice or their ears don't react well to the sound pressures that such drivers emit. He thinks Miles' trumpet sounds wonderful on the Forte? So real, so "there"? Then what is the problem with Miles on every other system out there? I think what Steve is trying to say is that the Forte does a credible job but then has to condition his impression less anyone think that he reaching too far to include Klipsch with high-end equipment.
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An interesting look back, for sure. Many folks appear to be carefully thinking through their selection for the 3 hard-earned bucks they intend to spend for a disc. Maybe splurge for 3 albums and get some change back from a ten dollar bill.
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It's all digital these days. Perhaps revinventing the idea of a little Advent 300 receiver and Heresy of the 70s, Peachtree has something that might fit the neeed....
http://www.peachtreeaudio.com/decco65-amplifier-with-dac.html
Notch filter question
in Technical/Restorations
Posted
Every change in impedance in one position in the circuit will ripple throughout the circuit to some degree, large or small. It becomes really difficult to assume inserting components into a circuit tuned to one set of variables won't significantly alter the intended effect of the total circuit.