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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy, could it be that the sheer beauty of the Tannoy wooferwill be compromised by the insertion of any high pass filtersbetween amp and driver?...
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Yep, the IB sub does it's job, as I expected because I had an IB sub in my previous listening room. I think you will really like the bass of this configuration because from my past experience -- there is nothing as good as IB sub for low bass, for lo...
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It is a RAAL Lazy Ribbon with the integrated transformer doubling as DSET OPT. Surprisingly, I started with a 4th order high pass filter which has steadily migrated back to first order...and it works.Next step is to trial a biradial horn for a bit m...
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Guy, here some unconnected comments that you might find worth considering. They are in no order or importance, just random thoughts.
1) Talking and describing about horn we shall always mention at least 5 mandatory characteristics
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[quote user="Chirag"] Well..my first question would be regarding the application. The big Melq tube is already doing the bass towers...is it not enough current? [/quote]
Chirag, I’m not planning to use this power amp in my system. ...
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[quote user="stevie7V"]… they can be used effectively in parallel with the main speakers and running about 5 or 6 dB quieter. I use them with a separate amplifier and adjust the volume until I 'just can or can't hear them'. At this level,...
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[quote user="Romy the Cat"] There were some educational for myself observations made, in some way saying something about this specific DHT, in some way saying something about Melquiades’ single stage version and the Melquiades’ full-range two-stages ...
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Okay, I think I understand.... and thanks for the link on the YO-186... if I can ever locate some of these I'll be sure to grab some (hmmm, a trip to Russia perhaps). As tubes get very hot internally, there were some procedures for trying to eliminat...
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The failure Herman had was probably on the input side - not the output. You will notice 2 things. 1. The system operated normally for 6 months, so it is unlikely an overload issue.2. The PurePower did its job of protecting the audio equipment (self s...
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I see, let me to explain how the this work all together the you will be able to make your own judgement. Let look at the functional purpose of the emails in there. The R1 resistor is a loading resistor. This is understandable. It makes sense to kee...
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[quote user="rowuk"] In the case of horns, I think that most fail to see that it is a simple band pass device. [/quote]
Yes, this is as simple as that.
[quote user="rowuk"] Applying a high and low pass filter to a standard speaker driver cr...
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[quote user="Teflon"]If I understand you, your amplifier uses line level frequency selection at the input to each channel, and the output of each channel is optimized for the frequency range of interest -you worry not about the performance of a chann...
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[quote user="Paul S"] The "calm HF" effect is something I have long sought but seldom experienced from repro, and I have blamed the amps as much as the ribbons. Mere HF extension is not enough. Hard to say whether the amp or the rib...
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[quote user="jessie.dazzle"] Resonant frequency :
I did not try to measure it. Can anyone confirm the following : I assume this parameter is most easily determined by playing a series of tones at constant signal strength (volume setting) whi...
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Within my site I many times stressed the importance of upper bass region for sound reproduction. I always said that with the improperly sounding 200Hz -400Hz any further "fidelity" of Sound becomes imposable. Ironically the 200Hz-400Hz is the most co...
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Hi,[quote user="Romy the Cat"]However, even if you did succeed to preserve dynamics in your line-level transformer then the LF cut off of this transformer will “get” you. The solution is very simple: do not run any transformer attenuators within a re...
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Zanon, I do not mean DEQ, but that is one way to do it. D[SET] is another way; and it can be done in real time, by a couple of means.If you actually settle on the mid-field monitor approach, you will want that sort of speakers installed before you g...
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Miab, since what I became an expert in cables? I am as much as anyone else – a subject of accidental discovering...
I do not use in Injection Channel any fancy cables. There is not a lot of need for it. The Injection Channel is mixed with M...
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Mani, I have long run an 8" Lowther DX4 down to 150 hz, over 2nd order high-pass. My impression after plenty of listening is that I wish I could cross it at ~ 400 Hz. The "problem"is not simply how "low" the 8" driver will go but it is also a quest...
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I think I found a good configuration for de-emphasis. The air caps will not work as there is nothing to amplify the capacitance. RC filer with cap to ground is good but I would like to have the entire de-emphasis with no capacitor at all, it will be ...
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May I at least ass-u-me that you plan to high pass these horns? If so, go ahead and figure that in, too. In any case, just looking at 70', impedance is not the only number you'll be running up, and the last place you want this load is for LF chan...
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I would like to pass some summarizing observations and some generalizations regarding the entire “Water Drop” project.
THE IDEA
The idea of trying to find a tweeter to compliment Macondo was a good idea. Many of you know that I was proudly declari...
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Yes, a cheap inductive l-pad between OPT and S2 in midrange channel. Interestingly, the frequency response of the first order Lazy Ribbon is remarkably similar to a response you posted somewhere on this site of the Water Drop with third order filter...
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As I am slowly put Macondo back to the business a question come to my heard: how can I make the Injection Channel sexier visibly? As now Macondo is re-assembled and reinstalled but with no Injection Channel sitting atop. I extend no room for argument...
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Romy,Interesting video. The first thing that came to my mind when you were talking about HF colours and the "clean" RAAL Waterdrop tweeter, is perhaps adding colour to the RAAL. Instead of blanding out the midrange S2 and injecting HF colour with t...
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[quote user="Romy the Cat"]1) HF channel. A120dB-sensitive hemispheric array of compression drivers, with a dispersion approximately 180° x 230°, sitting deep in the transition slop. First order high-pass.[/quote]Hi Romy,Why such a wide angle? T...
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I think it might be very interesting to introduce the high-pass filtration for tapped horn and to see how it behaves. It is not only about thermal overload and restriction of excursion. The unloading of none-used bass generally clean-up the transpare...
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I would like to offers some thoughts about possible avenues for Pure Power 2000 improvements. Those thoughts are no specific to the recent November-December events and have broader generic implication. I initially intended to write it to Pure Po...
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Yes, tapped horns are lower efficiency, mine are 105 dB (not 108 - 110 dB like the rest of the system). I don't even KNOW that SET or Class A is automatically appropriate for tapped horns... Something like op amp driven PP in class AB might even wo...
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AlloOnly the cheapo Shure see-saw... perhaps I can improvise a balance to check the weight.I thought about the compliance business, as the HK diaphragms look like the surround embossing is narrower, which would make them less compliant (if they are a...
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