Hi Zero,
First, I stand corrected. The date I indicated was a mental typo. It should have read 2001 not 1991. For that full decade of an error, I apologize.
Next, while putting a metal Beak on the top of a Hawk speaker enclosure (or any speaker enclusre for that matter) to transmit enclosure and surrounding air vibrations it absorbs, then recreates those same frequencies in an omni-directional pattern or simply reflects them in an omni-directional pattern (since the Beak is round), is still nonsense. My test instruments and ears don't lie to me. Let me fill you in so you won't be hood winked on this matter as many audiophiles have been.
In a Blind AB X human hearing test and spectrum analyzer analysis of sound test performed by the dealer and yours truly in the dealer's acoustically treated show room, each of us took turns testing each others response to what we thought we heard. One of us would listen to only one Hawk speaker, monophonically producing a 10,000Hz test tone at 80dB at 2 meters from the mid range speaker's cone while the other performed the AB X test. We both did a total of six tests each. More about the results later. Meanwhile, we conducted a separate test by setting up a calibrated microphone at the same distance and location where we sat to listen during the human hearing test.
A calibrated mic was plugged into a calibrated spectrum analyzer which analyzed the sound the mic picked up and the analyzer transmitted electronic pictures of the graphs produced by the analyzer while the speaker played a 10,000 Hz test tone from a pink noise generator so that an A B comparison could be made via the charts of a tests with and without the Beak on top of the speaker. (The results of this test are found below).
Next, a rigidly controlled hearing test was performed first as detailed above. Each of us went through 3 separate one-minute listening tests with the Beak on the speaker and 3 more tests with the Beak off of the speaker. We were blind folded and could not tell if the Beak was on the speaker enclosure or off of it while listening to the test tones.
THE RESULTS OF THE HUMAN ABX LISTENING TEST.
Out of the 3 tests with the beak sitting on the speaker, NONE of the 3 tests was "guessed" correctly by each of us, respectively. Out of the 3 tests with the Beak NOT sitting on the speaker, only one was "guessed" correctly by each of us respectively. Conclusion: The Beak made no apparent change in the sound that could be identified by a well trained audiophile's ears and brain in a controlled AB X blindfold listening test.
THE SPECTRUM ANALYZER TEST RESULTS:
A calibrated microphone was placed on a stand where we sat to listen and be tested. The mic was 3 feet from the floor and 2 meters from the midrange driver's cone. The mic was plugged into a calibrated spectrum analyzer which would show us on scope what differences in measurable sound waves (fractions of decibels) occurred with the Beak on top of the speaker and with it off the speaker. The 10Hz test tone was played on a top of the line, $3,500.00 Sony audiophile grade CD player. High end mic, connect and speaker cables were employed to connect all components and the speaker to the power amplifier. The Pre-amplifier and Power Amplifier were manufactured by Anthem and reported to be most accurate with a 115dB signal to noise ratio and flat @.005% from 5Hz to 50,000kHz. frequency response. Charts of both tests could be captured in the analyzer and printed out for visual comparison. The test was done on only one speaker (monophonic) producing the test tone @ 80dB where the microphone was placed and sound from the monophonic Hawk measured on a calibrated decibel meter. The tests were then run. The results from the spectrum analyzer were printed out. Absolutely no difference in decibels even to the most tiny fraction of a decibel could be seen when both charts were compared. 3 separate tests were run. The listening show room door was closed and the air conditioning was turned off to prevent any enterior vent noise. No cooling fans were in operation. In other words, care was taken to make certain no sound, other than from the monophonic Hawk speaker could be heard. The sound of our breathing was well below the threshold of 80dB, and therefore could not effect the test results.
CONCLUSION:
The Beak is a useless marketing gimmick. If a positive difference cannot be measured or heard by those with excellent hearing in a controlled, quiet environment, then the price one pays for these useless devices is truly a "rip off".
SUMMARY:
A final test, much like the average audiophile consumer would do was conducted using the Beak. High quality,easy listening Jazz and symphonic music was played in stereo from the Hawks by the same high end Sony CD player. The music selected on CDs was that which emphasized higher frequencies (triangles, symbols, violins, etc.). With the beaks on the speakers, then quickly removed, on and off again and again, while carefully listening, absolutely no difference or improvement in the quality of the sound could be heard or even perceived.
It's concluded, any improvement experienced would have to be psychological through the well know placebo effect. When one is told by a reputable source (the respected manufacture, in this case) that the higher frequencies are better perceived as a more realistic sound in the higher frequencies. With such suggestion, the audiophile, lusting after improvement of the sound of his hi fi, triggers the subconscious mind to adopt this suggested claim and makes it seem as so to the audiophile when the Beaks are employed in a listening session. This is psychoacoustic at the placebo level.
If you wish to be tricked in this manner into using the Beak, then apply self-hypnosis and the Beaks will for you, dear audiophile, make the improvement claimed by the manufacturer, even if, IN FACT, and REALITY, there is no improvement in the sound that is made.
Being an audiophile, and enjoying it for over 50 years as a hobby, I have enjoyed friendships with many discerning, high end oriented audiophiles. Some of these gentlemen, with their permission, allowed me to hypnotize them with suggestions placed into their subconscious mind that for that day only, the sound of a pair of Bose 901 speakers (late 60's circa) would be the very best, most real sounding speakers they have ever heard and would want to purchase them from me.
After the hypnotic session, I took the test subject to my garage where I have a pair of Bose 901 speakers that I bought in the late 60's set up and played on an old 50 watt Scott receiver and a 1977 Techniques turntable with a Decca (burn your ears out) cartridge. I put on a very old album, Take 5, and played it (clicks, pops and all). The subject was grinning from ear-to-ear, tapping his foot to the music and could not stop talking about how marvelous, dynamic and real the Bose 901 speakers sounded in my echoing 3 car garage. What a hoot! He than told me he loved the sound of the speakers so much, he wanted to buy mine from me, and begged me to sell them to him. I refused to do so (with tongue in cheek).
After a few glasses of wine while observing my friend in Audiophile Heaven and I cringing at the horrible sound emitted from those Bose speakers, he went home with plans to buy a new pair of 901s the next day. Of course, the next day, a phone call to this test subject (and a fellow audiophile friend) discovered that he was mortified by the thought of him loving the sound of Bose 901 speakers and did not know what came over him expounding such praise for those relics. He remembered the hypnosis session and the suggestions about the Bose speakers that I skillfully implanted into his subconscious mind, and the final suggestion that the suggestions planted would no longer be valid "the net day". Had I not finished the session with that suggestion, he would be the happy owner of a pair of 901's to this day. And that, Zero is how strongly the power of suggestion skillfully applied can work on an intelligent audiophiles mind. And, the audio industry capitalizes on it to the hilt! This is how audiophiles are led, or better put, programmed by marketing firms, audio rags, reviewers and manufacturers of audio items to believe in virtues of the sound of a product which is really not there and get outrageously high prices for that product. This is how a perfectly sane, decent audiophile can be hood winked into spending $300.00 per meter for solid silver wire wrapped in a fancy covering with quality plugs with the claim you will hear all of the delicate nuances of the sound which otherwise are curtailed or compressed by lesser priced cables. Well, Zero, I got news for all audiophiles out there...an electron is an electron and as long as there is very little capacitance and resistance in an electronic conduit (wire), the electrons which travel at the speed of light in that wire doesn't give a damn what that wire is shaped like, looks like or is even what kind of ferris metal its made out of. A coat hanger wire at 1 meter will produce the exact same results as a 1 meter $100.00 10 gauge, 999.9 fine twisted copper speaker cable. That's because it is only 1 meter long. Go longer, in this case, and there is a minor difference in sound. The point is, a silver wire, versus a pure copper wire will produce the same results up to 64 feet in length before an instrument can register a difference in the signal's frequency be it a silver or copper wire of the same gauge. However, once an audiophile has it placed in his noggin that the silver wire "sounds" better than the cheaper copper wire, he is compelled to shell out way more money for the silver wire set up. Then, after the wire connection, he is reminded the wire must be broke in (like it is a motor or something that is mechanical). This, too is pure nonsense and the placebo effect at work within the subject's subconscious mind. The worst comes when after the called for break in period has lapsed, the audiophile will rave at the magnificent difference in sound heard through the new, very expensive, silver cables after they had been broken in. What makes this fun is to remove the silver cables and replace them with common lamp zip cord in the same sheathing so they look alike. In this manner, the audiophile is not aware of the swap and ask for his take again on the sound of his cables. To sit back and listen to him embellish the glorious sound he now hears due to extremely expensive solid silver wire cables versus the cheap stuff, called copper is a real hoot. Then when the audiophile has been exposed to the swap, his head drops in shame. He then realizes he has been had, his wallet emptied, and his belief system engaged to adopt an unfounded, unscientific, malicious suggestion.
'Nuff' said. Hope you enjoyed and learned from this diatribe. My best to you in your enjoyment of our wonderful hobby. Doc