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Everything posted by Panelhead

  1. Panelhead

    Backs on Klipschorns?

    Maybe Roy can comment on the new Klipschorns and how they handle loading when not flush in a corner. Even with a back the new ones shoukd load the bass best when flush in the corner. How much will depend on the placement. Adding back panels to older models may not be the same as the new models. I suspect there is more to it than screwing some plywood to the back.
  2. I would also try to use similar amplifiers. At least topology. A low output impedance amplifier would be better on the bass. The mid amp less critical. I use a current output amplifier. Feedback lowers the output impedance.
  3. Panelhead

    La Scalas and time alignment?

    Rather than getting another K-77D, try a BEC CT-120, or a MAHL with B&C -120. Aneven better option, a large MAHL horn and B&C DA-10. I thought about going with a set of the large MAHL and the cheaper 10 driver to set on top of the LS ii. But it is too large to install inside either the LS ii or the H iii. I am not sold YET on a horn, compression driver, and stand contraption sitting on top of the beautiful LS ii. Plus wiring. Kind of detracts from the monolithic wood appearance. Do not know why, but wife complained about B&W 801’s, a taller sub that was above the window sill, large active monitors that had power cords and interconnects, and some Omni speakers that needed to be out away from the wall. She has never acknowledged the La Scala ii. Must be she secretly likes the veneer.
  4. Panelhead

    Heresy III are here!!

    I suspect you are correct. The retail end of the business is broken. In my mind, Bstock is close to internet direct.
  5. Looking forward to seeing these. Should be able to playback at rock concert levels. At home I hear a little hardness sometimes at jazz club playback level. Think it comes from the K400. It is at less than 100 dB, should be less than 1 watt amplifier power. Might be the source material. Some discs are overloaded.
  6. How much are you picking up?
  7. Panelhead

    overdriven amplifier

    If you go with one of the XLS models I have two suggestions. 1. Drive it from a balanced source. Many comment about issues with normal efficiency speakers and hum or noise. The amp generates some strong fields in the back of the amplifier. Some RCA cables pick it up. 2.Terminate the speaker cables with Speakon connectors. The EU binding posts are the worst. With a balanced source and Speakon connectors the amps are nice sounding. Everyone one who had negative comments on sound quality used RCA cables and the binding posts.
  8. Panelhead

    Heresy III-No sound

    Also check how you connect. The connections on some receivers are confusing. Check the balance control also. When you swap speakers if the same channel continues to play it is the receiver that is damaged. If the playing speaker moves channels it is the speaker.
  9. Panelhead

    New Deang AA's with Jupiters

    These look great. I rebuilt some crossovers and used foil inductors once. Went back to wire after. Not sure I could hear any difference over just coiled wire construction. But they sure are pretty. Maybe in ten years I will look at the crossovers in the LSii and Hiii. That is why I bought new. I would diddle with older sets instead of listening. If I had an older set ALK, BC, and you would be tired of the inquires by now.
  10. I have no idea how to measure the cables either. That is how I know they are exactly 114.25 inches. It is starting to rub off on me.
  11. Panelhead

    Wire connectors quality

    If someone does go with spades or quick disconnects there are nice ones available at reasonable costs. You have to know the size of post connecting to and the gauge of the wire being used. Or buy a bunch. They are made in the USA and constructed from copper. Definitely softer than the audiophile types I have tried. They were brass. The ones from Home Depot, Auto Zone, and other places may be steel. They are very hard material. If looking search eBay, spades or quich disconnects and USA connectors should return hundreds.
  12. I really enjoy the fresh ideas. Jeff has allowed a maybe one page topic grow to 29. Got to say many ideas do not appeal. The GTO caps, rats nest wiring, old VOTT speakers are all of no interest. I gave up on SET amps a long time ago. Two have two in the attic. Do not like the distortion and colorations. Many prefer the effect over solid state. Will not make a three wire cable for use in the system. If one was made they would be braided together. The 8 ga single cable used by Decware is not the same as two 12’s and a 16 ga tied together. Decware is way out there also. No golf balls, tape rolls, or pavers. There are ideas of Jeff’s I did implement. The composite 8a wire made me look at the 16 ga used initially. Paralleled two 16 ga to make 13 ga for the woofer and two 20 ga wires for a 17 ga to mid/tweeters. The length needed to be 9 -10 feet to reach from the amp to the speakers. So made them a multiple of 57.1235 at 114.250 inches. Not sure how you measure this. So mine are exactly 114.25. I think the system does sound better. Cannot pinpoint if it is using a Star Quad speaker cable now, larger ga wiring, a length close to the magic length. But without Jeff’s sharing of ideas I would still be using a 9’ pair of 16 ga cables on each speaker.
  13. Panelhead

    Heresy III w/ integrated amp?

    I am partial to Marantz gear. Never heard any of these, so it is just bias.
  14. Panelhead

    Heresy III are here!!

    Congratulations are in order. They are excellent. Easily the most bang for the buck in the Heritage lineup.
  15. Panelhead

    La Scalas and time alignment?

    There are directions for doing this. Nutshell: 1.Remove grills. 2. Back up screws on front panel and remove. 3. Stand top hat on front panel. 4. Remove back panel. Unclip tweeter and mid. Pull back panel with crossover off. 5. Lift top hat off motorboard. K-77 and K-55 in open now. Four screws hold the K77D horn in place. You may be able to route tweeter wires out through the cut out for K55x in rear panel. The wires are long to reach the front of the top hat. I have thought about this. No plans to try right now. But like some other things will not know if it improves thing until tried. A bracket to hold the tweeter is important. Seen some nice ones. Most pictures show the use of golf balls and painters tape to support the tweeter horns.
  16. The ones used on the LS ii look to be standard rubber. They should offer some isolation. Chris will have to comment on the noise he has measured and source of it. I read it as the top panel being activated by the K400. The three wooden cross braces installed by Klipsch are there for a reason. The knuckle test yielded a lower output and frequency. But that was knuckle on the outside of the top panel. Knuckle test on the inside yields no noise. I lined one checked the resonance and then the other. After checking them it seemed to be a good thing to add the rubber.
  17. That is a photo of the inside of the top hats. Lined with 1/2” closed cell rubber. Added over two pounds to each top hat. The mass does a little mass dampening, more is the rubber will not transmit much energy to the wooden panels. The dampening material looks better on the inside.
  18. This is my take on reducethe contribution from the top and bottom panels o my LS ii. May not work as well as the fiberglass. The radiating area of the panels is 4 square feet. Each.
  19. I hate to be confronted with facts and measurements. Does anyone have a Spectral analysis of a La Scala ii? The mid is band pass limited and K77D horn is a little different than the CT120.
  20. Panelhead

    Re-Wiring Klipschorns (pics added)

    I am convinced wire does make a difference. How much I do not know. The latest version of the La Scala AL-5 is wired with Audioquest Star Quad. I suspect it is used in the AK-6 also. Roy would only change from the clear 12 ga zip cord for two reasons. 1.Audioquest saw a marketing opportunity and gave the wire to Klipsch for use in these new products. Saving maybe 10.00 in construction costs. 2. Roy in testing either heard or measured an improvement in playback performance. I have never seen an Audioquest Star Quad wire, assume even in bulk is an order of magnitude more expensive than clear insulated 12 ga zip cord. If I was rewiring a Klipschorn or La Scala the expense of Canare Star Quad speaker seems worthwhile. There are three sizes, 11, 13, and 17 ga. Most would use the 13 ga for all. This is 4S8. Around a dollar a foot. I think 12 dollars would do both. I picked some of the 17 ga, 4S6 for the mid/tweeter side of the LS ii. It was 31 cents a foot. Gets the rewire cost down to maybe 8 dollars for the biwire crossover. Single wired older Khorns will be significantly cheaper to rewire. The Star Quad construction rejects RFI and EMI better than zipcord. Must be why that is used in the new models. In an older speaker replacing the wire and especially the connectors may be an improvement. Those crimp on connectors and wire oxidize over time. Dissimilar metals. Some may slide off easily. Just going back with 12 ga zip and some quality (USA NOS) connectors is worthwhile.
  21. I am far from an authority on horn termination. The tweeter on the LS ii looks worse the the mid. The mid changes to straight at motor board. The tweeter is flush mounted but has a gap all the way around. If the hole matched the K77D I would think it would be an improvement in function and cosmetically. But it sounds great regardless.
  22. The pics above are as good or better than mine. I was confused by the cutout in the motor board and the size of the K77D. The K77D is really not terminated, there is a gap around the edge of the mouth. The K400 is rear mounted, the motor board is straight cut and a little rough in finish. Was told that the tweeter cut out is sized for the old style K77 with Z brackets. It also allows a little wiggle room due to the proximity of the Mid Horn and the top of the cabinet. One member mentioned fabricating an adapter flange to allow mounting the older style K77 horns in a La Scala ii. I think the project is in evaluation phase to judge potential demand. So far the market size is two adapters. I would also like to try the larger style horn and a B&C DE-10. But there is no way. The K77D is a tight fit. The termination of the mid horn mouth could be implemented better too. Continued flare and a machined surface. Both drivers play great by my ears. I overthink the details sometimes.
  23. Claude, The best I can guesstimate the K55 diaphragm is 20 inches behind the K77 diaphragm. The vertical height difference is close to 4 1/2”. If my 10th grade geometry does not fail me, the top hat needs to be angled up at 77.3 degrees. This will time align them. Maybe sitting another driver on top of the top hat is a better option.
  24. This has drifted a little from foil orientation in crossover capacitors discussion. The time alignment of the drivers is of interest. My previous speakers had slanted front plinth for time alignment. And first order crossovers. I will need to tilt the La Scala ii back to align the K55 and K77. I have seen where some have moved the tweeter and horn out of the cabinet and placed close to the mid compression driver. The K55 compression driver protrudes past the back panel on the LS ii. Aligning the woofer might be very difficult. The mid and tweeter would need to be behind the bass bin. That might be my solution. Remove the top hat and place behind the bass bin. Then tilt top hat to achieve alignment. This will require lengthening the cable from crossover to bass bin. So I am needing some speaker cables and something to balance the top hats on.