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The patent attorney, after first taking your money, will do a patent search to see if somone else has already patented your idea, or one substantially similar, or if your idea is a logical progression of another patented idea or something in the public domain. You can always do a "web search"...

Does Bose make can openers? I might like one of those as long as I didn't have to listen to it. Paul

Good luck! I saw one of these at the San Francisco home entertainment show. It was hooked up to a Samsung display and the combination looked MOST impressive. Paul

I saw the Samsung HLN5065W, HLN507W, and the HLN617W at the San Francisco home entertainment show. The HLN5065W has 3:2 pulldown and a silver frame around the picture. The HLN507W and the HLN617W have Faroudja 3:2 pulldown and a dark frame around the picture. All three seemed to have a...

I have never bought a VCR. I can't say I have never owned a VCR because a friend gave me one when he upgraded. I kept it for a few months and then tried to play a tape on it (a Tektronix or HP o'scope demo tape). The @#%&&^*3 VCR would not play the tape so the tape and the VCR went into the...

When companies come up with a new, upscale, name brand, they want it to evoke positive attributes such as quality or luxury or whatever. Sony's new name brand, Qualia, tries TOO hard to sound like quality. Reminds me more of a former Vice President who had spelling problems. Dan Qualia, CEO...

The radio waves are in the 100s of kilohertz or in the megahertz range. The higher the frequency, the smaller the "chicken wire" mesh needs to be. The R.F. is what is being shielded and along with it the audio frequency modulation of the R.F. The permanent magnets in the center channel...

I use metal wires with insulation on the outside. Paul

Buy her some flowers and say that they threw in the speakers as a bonus. Paul

Just because a capacitor (in this case aluminum electrolytic ones) is operating at or near it's rated voltage does not mean it will fail prematurely. Three examples: 1) Back in my BSEE school days (mid-1980s) I made a pair of mono-block solid state power amps. Beings I did not have a lot...

Mouser (www.mouser.com) has Xicon brand polystyrene capacitors in small values (100pf to 10,000pf) for 22 cents to 38 cents each. They also have metalized polyproylene capacitors. Paul

Another possibility is using switches to control some DC controlled (coils rated for DC voltage) relays that have heavy duty contacts. If you are really persistent/lucky, you may get some relays in hermeticly sealed cases that have nitrogen (or some other relatively non-reactive gas) inside. Paul

I think it is supposed to be this way: With a positive voltage applied to the "red" termial (relativet to the "black" terminal), the cone is supposed to move outward from the woofer frame. To check the subwoofer alone, hook up a 9v battery to the woofer for a second or so and see which way...

The best sounding op-amps are single devices. The AD797 is great but high frequency stability can be difficult to optain. Other single op-amp that have a reputation for high quality sound are: AD843, AD825 (Analog Devices) The AD825 is available only in surface mount packaging...

Have a look at this page: Link Removed Some op-amps are "reviewed" The opa2134 is reviewed, the opa4134 is a quad version that Texas Instruments offers. Paul

My two AV15s showed up a few minutes ago. I was not expecting FedEx Saturday delivery, but I did not reject the shipment. The AV15s look very nice. Paul

How many people have received their AV15s? I am still awaiting for my two AV15s to arrive. It should be any month now. I plan on placing each in a sealed enclosure of 3 to 4 cubic feet and EQing if needed. Paul

I have had a Sony XA777ES for about four months. It replaced another Sony ES player that I had been using for over 15 years. I don't have many SACDs yet, but the performance of the XA777ES on redbook CDs alone is worth the cost of the player to me. If you are uncomfortable about spending...

If DVD player makers really wanted to, they could make players that had no layer change pause. They would just have to add sufficient buffer memory to cover the length of the worst case pause condidtion: the laser mechanism moving full stroke. This would add a little to the cost but could be...

Two pair of ladies' stiletto high heels would make a sexy looking set of legs for your subwoofer. Paul

Above 600Hz or so, I don't think that the waterfall plots are too bad. There is some stored energy release at about 4 or 5 different frequencies above 600Hz. I have seen some waterfall plots in Stereophile magazine that have looked worse on products that got decent reviews and cost a lot of bux...

An AV-12 or AV15 (or any other subwoofer driver with dual voice coils) can have one of the coils used as a feedback sense coil in a servo feedback loop. Of course, a driver that is designed from the onset with a coil intended for feedback use will have an advantage. Transformer coupling...

My hearing is so sensitive I can hear things that don't exist. I can hear frequencies so high that numbers can't numerate the frequency. Seriously: Using "Audio Tester" software and a set of headphones hooked up to a computer sound card (Turtle Beach Santa Cruz) and also running the output...

Only by being one with the volts and amps will you be able to know real wattage. -zen EE master Paul

A long, long time ago in a stereo store far, far away, I bought an amplifier. I took the amp home and hooked it up. Everything worked fine for a few hours. Then I heard a brief sound that sounded like "bleeeeeeep", and then nothing from the amp. The amplifier thought it was an oscillator. It...

Front: Acoustat 2+2s Rear: Acoustat 1+1s center: none subwoofer: homemade Paul

To me, Dunlavy is one of those brands that "when I win the big lotto, I'm going to get a set (note, I'm not saying "a pair") of big Dunlavys. As an EE and audiophile, the upper end of the Dunlavy line has always interested me. Paul

Enough is that amount which, if significantly added to or subtracted from, makes one say "too much" or "too little" respectively. Paul

In multi-driver time coherent speaker systems, the drivers (tweeter, midrange and woofer) are placed at different setbacks so that the ACOUSTIC center of each driver (not the voicecoil) is equidistant from the specified listening position. So an electrical pulse into the speaker will result in...