henry4841

Congratulations. Enjoy

Just curious, did you have the same problem with the old crossovers? There are many they do not like the sonicaps that Bob uses. Never used them myself so no opinion. Caps used is a very subjective thing. This board has opinions all over the place. I will tell you what I like after much experimenting if you PM me. I do not want to go down the road of caps in an open setting. What you are describing as harsh may be considered as just too bright by many. L-pads are good at taming that problem. https://www.parts-express.com/speaker-l-pad-attenuator-50w-mono-3-8-shaft-16-ohm--260-254 The mid driver is considered a 16 ohm in a K-horn.

L-pads keep the impedance the same. They are nothing more than two resistors and will not significantly affect the sound any more than wire with some resistance. Some say you can hear a difference with monster cables instead of 18 gauge wire but I am not one of those. There are many excellent speakers that include adjustable L-pads with their speakers. Cost very little to try. I expect Klipsch has to use now use discrete L-pads in their crossovers since they abandoned the autotransformer. Discrete L-pads are the way you attenuate speakers or drivers where the have they same volume. Some do not like an adjustable L-pad but the pot that does it is in the real world very insignificant. You cannot change the taps on an AA network. Technically you can but it is a no no sonically. You need ALK crossovers to change taps. He uses a resistor in parallel with the autotransformer to enable changing taps.

Just thought I would add, if one has a decent ESR meter and do not believe you can measure in circuit there is absolutely nothing wrong with removing the cap to check.

ESR meter? Only talking about ESR of caps not value. If not true many sellers of ESR meters of very pricey meters are wrong. I would say if one wants to split hairs there may be some difference out of circuit vs in but not enough to matter in real world. The ESR value of a cap is given on the data sheet of capacitors and different values and voltages have different ratings of ESR along with brands. A slight shift higher in ESR is not going to effect the circuit enough to be a problem. When the ESR is a problem in the cap it is really high. When the ESR value is supposed to be .5 and reads 1 or say 1.2 it is not going to be a problem When a cap goes bad the the ESR will jump considerable like say 8 or even 20 or more and not just a few numbers. Being retired I watch a lot of youtube video's by renowned technicians to sharpen my skills who say you can measure the ESR value of a cap in circuit with ESR meters that claim you can and if I am wrong I am in good company.

New to forum so late to thread. Very remote possibility anything wrong with drivers especially that the speakers came from Dad. Assume well taken care of and cherished for many years by Dad. Heresy's sound good which defies logic since as most know with horns bigger is better. K-horns have better horns than Heresy's. Crossovers brain of speaker system and are always suspect when problem with speakers. I suspect the problem may lie in position of horns comparing Heresy's with K-horns. Turn the K-horns up upside down with horns at bottom and see how it sounds and or put Heresy's at same level or on top of K-horns and compare. If problem persist forget about bass in experiment and turn the K-horns at a more 90 degrees from wall and see if problem persist. Keep rotating the speaker more like Heresy's and see the results. The room is a big part of the K-horn sound unlike LaScala's which have the same horns and bass speaker with an octave less bass. I have LaScala's in roughly the same size room and have never experienced what you are describing. L-pads on the drivers may be another solution. Unlike equalization they only attenuate and do effect tone. Anyone with any amount of electronic background should be able to install them for you. Klipsch crossovers are one size fits all which is never the case. Anyways some things you can try before giving up on your excellent speakers. Possibly just not right for you room but I would not give up on them without a fight.

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Most of the better ESR meters can and do measure in circuit capacitors except the power supply caps in parallel. For accurate measurements of those they will need to be removed.

I would say re-cone if the speaker was not making a noise. I did it once just to see what it was all about. Turned out to be nothing to re-coning, very simple. But noisy usually means voice coil rubbing and needs replacing which I would not do myself even though I know how it is done. Getting the right voice coil would be a big problem since no spec's are given for any Klipsch speaker that I am aware of. Trying those Dayton's is the way I would go even though I expect the stock woofers would be slightly more efficient. I was going to recommend an Eminence speaker but they get real pricey for one that would work in your box. Let us know how it works out.

From what you describe you want I would give them a try. Like many will say may not be optimal for kg 4.2 but you are not expecting perfection. Parts Express has a great return policy if they do not work out but I expect they will satisfy your needs.

I have never tried your favorite OPT, Hammond. Maybe the reason I like Edcor's is because I never use a steady 1 watt of power and of course the price difference. I have measured my power being used at my speakers when they were too loud for average conversation and have always found less than a watt of usage surging maybe just a little higher on peaks. Most of the time I use much less than a watt. One watt is a lot in my world. The beauty of Klipsch speakers.

Garyrc was talking PS transformer warm up time in post. The GZ34 is one rectifier tube that is slow about doing it's job and preventing a surge of voltage at turn on. It is not unusual to have close to 100V increase on the plates of tubes during turn on before the voltage goes down to the operating voltage. This increases the voltage rating needed for the filtering capacitors one must consider designing tube circuits. Tubes do need some warm up time before sounding their best and reach their operating temp though I have not noticed a dramatic difference in sound myself. Those with better hearing may. Marvel I like your 2A3 amp circuit. Nothing like true triode tubes when it comes to sound.

Really can't blame the seller as it appears he shipped them in timely manner. The shipping company is to blame. Having worked in warehouse receiving trucked merchandise this does happen on occasion. Sometime merchandise is put on wrong truck by fork lift driver and may go to who knows where. Generally you will eventually get your speakers. Call the shipper.

You are correct. Only responded to Claude's statement without looking at the topic of Cornwall's. They do need some time to limber up being a conventional bass speaker. I stand corrected.

I Agree with Claude. Think of the bass speakers as a horn driver just like the mid and tweeter driver. Horn drivers move very little and depend on the horn to amplify the sound. Since horn drivers move very little the sound is naturally more clean, equating to less distortion. I doubt it takes very much breakin with a Klipsch horn loaded bass driver. Bass speakers in conventional speakers are the ones that require a few hours to limber up being that they have to move so much more to produce bass notes. IMHO

Dayton does make caps and from what I found many years ago is Bennic makes them. Many on this forum like those expensive PIO caps which as a rule do not measure great but sound good to many. Find and use what sounds good to you within your price range. If one just chases numbers they may not end up with what sounds best to them. ESR meters are just a tool. Many new capacitors will have readings in the 1 or 2 range but are perfectly good for what they are designed for.

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Both Marvel and gayrc are correct. OPT's especially in SET's are considered important and you do need a power transformer large enough to supply the energy for bass response along with enough capacitance to store the power to be released. I have found Edcor OPT's to be excellent OPT's. Just be sure and order the ones that go low in the frequency range. The range is stated in specifications. I think when talking about warm up time is the rectifier tube being used. Unless you have some limiter in the power being feed to the transformer they are either on or off. Some rectifier tubes have longer warm up times than others. Then there are amplifiers that have a standby switch as well.

Parts Express sells many brands of capacitors. The ALK simple crossover schematic can be found on the internet with some searching. You can just recap your AA crossovers and just install some L-pads to attenuate the music to your taste. Might be simpler. Unless things have changed at Klipsch they use a lot of Mylar capacitors in their networks. Mylar is a brand name for a polyester cap. Polyester caps are much cheaper than the polypropylene ones and Klipsch must think they are good enough.

It appears you have some electronic skills so you may want to try building one of the SE SS Firstwatt clones. There is a new build that should be published soon that uses a V-fet that has the curves of a triode tube which I think may sound much like Nelson's SIT amplifiers which were highly praised as having the 300b sound with more power which would equate to better bass. To the best of my limited knowledge the Firstwatt SIT amplifiers are the only SS amplifiers that have a true SET sound. All other mosfets have a pentode curve. The 845 tube is one remarkable tube.

The little sweetie schematic was posted on diyaudio forum and I have built it. Sounds as good if not better than my SET 45 tube amplifier. Wonderful sounding little amplifier.

Do not believe you can change the taps on autotransformer without changing the value of the 13uf cap. ALK who sells crossovers uses what he calls a swamping resistor to be able to change taps for attenuation. Changing the caps will change the sound of your speakers. Much brighter is the usual response from those that do. Not a big cost to do so why not give it a try and see what you think even if PIA to take down. I really do not see the big problem with speakers upside down on a shelf close to the ceiling. The ceiling will provide the same function as the floor on the bass notes being the bass notes are omnidirectional.

Six watts should be enough for most listeners using a SET tube amplifier. From experience different 6 watt SET's are different when it comes to bass depending on tubes used. Certainly for bass lovers the more watts a PP (push pull) amplifier will have better bass but sacrificing the sweet mids and highs a SET makes. Of course exceptions to every rule.

https://critesspeakers.com/autotransformers.html Data sheet for the 3636 autotransformer is at Bob Crites website.