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efzauner

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Everything posted by efzauner

  1. https://www.amazon.ca/Earthquake-Sound-CP8-Subwoofer-Laminate/dp/B005W8NEXA https://www.amazon.com/Theater-Solutions-SUB8SM-Subwoofer-Mahogany/dp/B00CYQ4LOO https://www.monoprice.com/product?p_id=33830 https://www.outdoorsumo.com/best-slim-line-subwoofers/
  2. you may want to check with Ngen... he seems to run a repair service. Try to get it fixed. Keep it original!
  3. WOW. Cool! I have had H1s for almost 20 years and set them against Forte 1, KLF 20s and Tangen 400 and kept the H1 also! There is something special about them!
  4. well start by providing the model number! Are you using it in auto on mode or permanently on?
  5. you have to remove the control panel and the driver that is on the same side. The passive radiator is on the other side. Then you can remove the amp.
  6. I purchased a replacement with an "original philips bulb" on Walmart online for my Sony VLP did the trick, so far so good!
  7. ha! i have the CD version! Not sure if its that old! well. hmm early 80s? yep, that is 40 years old.
  8. @stepher All good points. When I fixed mine, the previous repair already had attempted to make an inductor out of solid wire. I did not know that the original part was made out of litz. Do you know for sure that the switching frequency is 1 MHz? I did not measure it. Could guestimate from the RC of the PWM circuit...
  9. ok thanks just confirming my repair as well. I used solid wire. worked well enough if not perfect. Measured on HP 4800A Vector Impedance meter! What wire gauge did you use? size of coil # of turns etc. Just in case I want to redo mine using litz
  10. Very nice. .what inductor was that? The L302? how did you deduce the inductace value? Schematic? Interesting that yours was melted too. Mine also.. purchased used/defective. Where an fets or diodes blown also?
  11. I understand zobel networks to equalize the woofer impedance.. But the KLF10 does not use one. My basic question is why does the system as is simulate so poorly. The schematic is exactly reproducing the stock crossover and the woofer R and L. E
  12. Thanks! lots to digest ! But I am sort of going to reproduce a KLF C7 but with the KLF10 tweeter and the 2 Alpha8s The C7s do not have a 2.5 way design. The woofers would be almost as close together.
  13. The K1056K woofers I wish to make into bass bins and use them as stands under the Heresys. The RSW15 is in a corner in a somewhat squarish room and really cant put it any where else. It is not in the best place. There is a null in my favorite spot sadly.
  14. thanks for all the feed back I currently use the Heresies with the RSW 15 and Pioneer Elite HT receiver. Sounds great but for the sub in the rear corner. I can tell the bass is coming from there. My plan was to use the bins placed under the Heresys and a separate amp with just a low pass electronic crossover when using the Heresies driven by my Pioneer SA9500 to get just a bit more bass presence. Only the bins would be Low passed, I was not planning to use the electronic crossover to HP the PA section of the SA9500 driving the Heresies. I would be happy to get down to 30 Hz but would prefer a sealed sound like my older large Advents. That is why I suggested adding some mass to the woofers to extend the response without a vented design. How did the 60s ane 70s large woofer acoustic suspension speakers get low end response? With heavier woofers or with higher compliance? I know that a woofer design is different if it is intended for sealed or vented cabinets. And yes, I used that TS sheet to add a driver file to Win ISD. Dumb questions. Is it two Heresys or Heresies? Ed
  15. hello I am trying to make a center using KLF10 tweeter and crossover but with 2 x Eminence Alpha 8a woofers. As a starting point I am simulating stock KLF10 low pass section with KLF 10 K1056K woofers I would then modify the crossover if needed for the Alpha8as with Re=5.3 and Le=.44 What I get is all wonky, why the big drop and peak? What am I missing here? thanks! (if I replace the R-L of the woofer with just R=8 ohms it is no better, -12db at 1.5Khz.) KLF10.pdf
  16. was one on craigslist... https://westernmass.craigslist.org/ele/d/easthampton-klipsch-kp-250/7083319877.html
  17. Cool! lets keep that in mind! maybe some joint projects.. I would be open to a single Heresy parts to make a center. Dumb question.. where where they sending the RSW Indigo Bash amps for repair in Canada?
  18. Hello and welcome! Where abouts in Canada? Near Montreal where i am? Ed
  19. is this for Atmos height or "Front Height" speakers. Just curious. I am also thinking of adding front eight or center height speakers but I dont have an atmos receiver.
  20. well? These are Heresy 2 but in a bigger vented cabinet.. Same drivers and crossovers! . What many people try to do with their Heresys. Did you get them? I had purchased a pair but never really listened to them much. I got a pair of KLF20s and sold the T400s.. Should have given them a chance... Got a pair of Forte also... sold them all to keep an old restored pair of Heresys.. loved the sound the best of the lot!
  21. This is not that complicated. I think we have to be careful what is meant by gain. Attached is the gain chart for my SA9500 amp. Note the input sensitivity at Power Amp IN is specified as 1 Volts to provide rated output power of 85 watts into 8 ohms. This is shown on the chart as 1V = 0dBv at the input of the PA OdBv is referenced to 0V so in this case dBv= 20 Log (V PAin/0V) This gives a Vout of the PA of 26.1V that corresponds to 85W into 8ohms if you use P= V^2/R Gain is Vout/Vin. In dB this is 20xLog (Vout/Vin). = 20 Log (26.1/1) = 28.3 dB. So when I mean be careful of what is meant by gain is that if gain is Vout/Vin to provide maximum rated power you are not going to match your levels. What you need to do is find gain for all your amps for an equal Vout given identical Vin. For example, you want all your amplifiers to provide the same output voltage for a given input voltage. If amp A (for you HF section for example) provides 10v out for 1V in, it is a voltage gain of 20dB If amp B (for your LF section for example) provides 20V out for 1V in, it is a voltage gain of 26dB and you would have to use 6dB of attenuation. Note that Amp B provides 2x the voltage. You could use a simple voltage divider circuit using 2 10Kohm resiistors in series. Voltage gain in dB works for any impedance. That is why the chart uses voltage gain because input and output inpedances change in the circuit. If you do not have such a chart then you could determine gain yourself with an audio generator (your laptop or phone and an online audio generater!) and voltmeter If you use power gain, which is 10 x Log Pout/Pin you have to calculate power using voltages and resistance. In this example, without using any attenuation to equalize the amps: Amp A at 10V out into 8 ohms gives you 12.5 watts Amp B at 20V into 8 ohms gives you 50 watts. the power difference between amp B and amp A is 10 x Log 50/12.5 = 6 dB the same as the voltage gain! now all of this assumes equal impedance and sensitivity drivers which is rarely the case! You would have to take both into account and back calculate the PA voltage into the drivers to provide same SPL, and then provide the right attenuation at the input of the PA to equalize them. Have fun! E
  22. I posted my repair success on my RSW15 on another post. But just some funny things you see on previous repair attempts When finally re assembling the indigo bash board I was missing 6 screws. I just assumed after 2 years I had lost them. Then I took a closer look at the picture I took originally when I disassembled it. There where NO screws! The pcb is floating above the mounting tabs! The guy had put screws thru the TO220 mounting holes systematically shorting every power FET and Diode! LOL no wonder it didnt work! Egg on my face for not catching this originally... oops!
  23. The models seem to be using inductors as a voltage divider elements and not as any transformer where the voltage out/in is a function of turns ratio. I believe you have been implying turns ratio into the inductance values. This link uses inductor K coupling factor to create autotransformer models. Some good info here! http://www.beigebag.com/case_tapped_inductor.htm As for phase shift... if you write the inductor model as jwL and use voltage divider math Vout/Vin = jwL2/(jwL1+jwL2) the jw cancels out so you do not have any phase change... This makes intuitive sense as well since if use 2 identical inductors the magnitude of the voltage phasors Vout has to be half of Vin. KVL would not work if the phases of Vin and Vout arent the same.. Am I making sense? E
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