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gregrueff
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- gregrueff
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Comments
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Tight fit! (Image) (Image)
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Crossovers completed: Jule Fidelity crossover components for the win! (Image) (Image)
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System HD with prototype crossover mocked-up: (Image) Iron cored inductors were used for the LP section as well as NPE caps. I would have used poly caps if they would have fit! Horizontal directivity curves: Horizontal lobe analysis to confirm…
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So I've pretty much settled on the crossover, and all I need to do is some more mocking-up and measuring to determine final phase tracking and impedance. First order slopes were considered but discarded because the impedance fell too low. It would…
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Hello, I have tested many of the drivers mentioned in this thread. The following graphs may be useful to you. LY302F: (Image) LY401F: PC105-8: (Image) TG9FD10-04: RS100P-8: (Image) Cheers!
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Obligatory finished speaker in final location, sans crossover: (Image)
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I stumbled upon the amazon damping. It was the cheapest I could find. I'm sure the market is for car audio. I thought I was buying a sheet of the specified dimensions, but it was like 1o pieces, lol. It will last me many projects. I also agree …
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(Image) (Image)
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More: (Image) I learned how to braid 5 strands =), which was necessary because the crossover was to be split across the two sides: (Image) Stuffing the TA6 chamber before putting on the top: (Image)
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In the past I have been very outspoken on the use of cabinet damping and being smarter in our construction methods rather than just using 2" thick panels. This is all 3/8" baltic birch. This speaker is only 3.5" tall. (Image) Fig…
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Build pics: (Image) (Image) (Image) Not an ounce of wasted space, and only just enough room to fit the prospective crossover in there.
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So then on to the bass section: a daunting task to go down to 100Hz with a 2"-2.5" driver. Going any larger would negate all the height benefit of selecting the TA6. I'll just cut to the chase and just say I selected four (4) ND65-8 drive…
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(Quote) I did look at this driver. HiFiCompass has reviewed it, and I know it is the mid in the BMR Philharmonic Speakers, which is highly regarded. I have to admit though, I'm a little turned off by the big dip shown in HiFiCompass' FR data at 10kH…
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(Quote) That is an excellent looking driver- I was not familiar with it. Do you have experience with it?
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The biggest problem with this initial center channel though was that it was too tall. It was trapezoidal in shape, with the rear not being as tall as the front, but it still slightly blocked the bottom of the TV when viewed from the couch. While de…
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(Quote) Not a bad idea. I'm done with this one for now though.
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However, there were some serious flaws. My first mistake was modeling each RS100 with a 1" vent and then using a 1.5" vent in construction like an idiot. The tuning was way high and peaking. It also coincided with a room mode peak and d…
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I thought performance turned out well, but it took some work to get there. Here is the on-axis response with the reverse nulls overlaid: (Image) I thought the distortion profile turned out pretty good too! And all with only eight components: (I…
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Cool. For my baseline center channel I was really fixated on a vertical MT arrangement flanked by two woofers for the (more favorable) polar response. I also tried to make as slim a speaker as possible. That lead me to the truncated RS75 with the …
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Hi, I've used the TG9 in a very similar application to the one you are describing. You may or may not find it useful, but I had a thread on PE a while ago describing my effort. I tested the TG9 and found the lower crossover point both xmax and HD …
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I don't think I'm an expert, or even have the breadth of experience of some of those here, but I also focus on HD3 and HD5 primarily. For a midrange I would look as low as 250-300Hz. The PC83-8's HD3 at 250-300Hz is only -30dB down. The PC68-4's HD…
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I just realized I had a typo above. The first plot is the PC83-8 (mentioned as being considered), not the PC68-4 as shown in the second plot.
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(Quote) Hello, I've tested the PC83-8. I had posted the results to a thread on PE called "driver testing" with many other small drivers. A snippet of the PC68-8 below: (Image) In my opinion the PC68 and particularly the PC105 is super…