Brewing Master

Question:

Never mind about the memory thing – been there done that – but it was a  useful post and worth repeating.

Response:

HLE wrote: > Okay, okay. > I’ll take the credit for the comments and the heat for the Alzheimer’s. I > had expanded upon my simple chair solution (which works fine!).

Is that a home-brew solution? I’d be interested in seeing it. A one-chair (or better yet, a one-sofa) solution would be great for me…

Response:

"M.M." <junquema…@cox.net> wrote in message

news:Xns9457C9A84D96Dnobodynowhere@68.6.19.6… > Is that a home-brew solution? I’d be interested in seeing it. A one-chair > (or better yet, a one-sofa) solution would be great for me…

Yes, home brew. The loop works fine, though it is now in a pillow about 16" square, with a pigtail to the amp. I drive it with considerable power from a conventional amplifier generating monaural output. The fluctuating field is dependent on current flow and square:cube says the aid has to be very close OR the power has to be quite high. Some music makes my earlobes glow. So… sofa? You can do multiple loops, or one racetrack oval. An oval about 6′ long and 18" wide – behind the cushions – would work if driven by a 100W consumer-quality amplifier. Keep the total impedance of the loop at eight ohms or more – using the numbers previously provided by some guy (I forget). If you play Rachmaninoff while sitting on that sofa, I hope you’ve had all your children.

Response:

Put on some Wagner and cook Xmas dinner.

Response:

Okay, okay. I’ll take the credit for the comments and the heat for the Alzheimer’s. I had expanded upon my simple chair solution (which works fine!). "ken kerrison" <kkerri…@ozemail.com.au> wrote in message

news:9d801830.0312191653.2906fb01@posting.google.com… – Hide quoted text — Show quoted text -> I wonder who wrote this?: > Okay, I’ll amplify. 8^)

Response:

Thank you all for your help. My dad and I should be able to manage setting something up. I am going to get him a Freeview box so he can get digital TV and radio. This means that with a loop system he will be able to hear it in comfort in any room with the loop set-up. Thanks again Mark

Response:

I wonder who wrote this?: Okay, I’ll amplify. 8^) The objective is an inductive loop – a winding of wire through which an audio signal passes, which creates a field within which the audio signal can be detected by appropriate equipment (i.e. telecoil). It is very much a radio transmitter and receiver, though at audio frequencies rather than the AM or FM bands. 1. Examine the amplifier. It should have a MONO mode. The output connectors (where the speakers would normally be connected) should say 4 OHMS or 8 OHMS. That’s important. 2. Buy INSULATED wire as follows: 18 gauge lamp cord is 0.0066 ohms per foot. 4 OHMS = 606′ 20 gauge wire is .011 ohms per foot. 4 OHMS = 364′ 22 gauge wire is .017 ohms per foot. 4 OHMS = 235′ 2. Pick a path around the room on the ceiling, or under the carpet. A room measuring 15′ x 20′ will have a perimeter of 70′, which will require a minimum of four complete turns of 22 gauge wire, six turns of 20 gauge wire, or nine turns of 18 gauge wire. 3. Pick a path around the room near the ceiling, and wind (or hang) your "coil", or loop, starting and ending at the amplifier. 4. Connect either end of the wire to the + terminal (red, usually) and the other end to the – terminal (black). Most amps have SPEAKER A and B switches; put this circuit on the unused one. 5. Turn on the music. Set the amp to MONO, and select the appropriate speaker circuit. Switch the aid to telecoil. Experiment with locations in the room. Enjoy (hopefully). NOTES: If the back of your amplifier says something like "8 OHMS MINIMUM", double the required wire length (load). Buy 120% of the wire you’ll need to ensure that you can complete the loop. You can add a POWER RESISTOR (Radio Shack, surplus, etc.) to ensure an appropriate load and reduce wire length, but the amplifier output will be divided between the loop and the resistor, proportionately, which means less radiated energy. This solution requires a LOT of energy so try not to compromise. If required, get 4 OHMS at 10W minimum. There’s another and simpler approach: I have a coil built into my favorite chair. It’s only 18" in diameter, but includes 120′ of 28 gauge wire (0.071 OHMS per foot). That’s about 25 turns of that relatively thin wire – easy to do, flexible, etc. If you’re happy with the result but annoyed by the LOW-FI effect, have your audiologist expand the bandwidth of the telecoil setting of your aid. It is probably set to the very narrow frequency range of a telephone rather than the broader range of music, etc. There’s strong 60 cycle (Hz) noise in your home from the house wiring. It may interfere. Last point: if you worry about the radiated energy, get a tinfoil hat. – Hide quoted text — Show quoted text -"HLE" <OO…@USMC.cc> wrote in message <news:ueDEb.9395$C87.9063@twister.socal.rr.com>… > "ken kerrison" <kkerri…@ozemail.com.au> wrote in message > news:9d801830.0312190058.88ec7cd@posting.google.com… > > A member of this group once set out details of how to instal an > > induction loop. Do a search under OOHR…@USMC.net plus loop or loops. > > I didn’t try his method but it seemed to me to be sound. > I did barrel rolls and immelmans in the Marines, and got looped more than > once, but no loops since. So that probably wasn’t me unless it was a > response to a specific question. I can provide the physics and electronics, > but not the practicalities. > 72.4% of all statistics are made up on the spot!

Response:

- Hide quoted text — Show quoted text -dib…@biochem.ucl.ac.uk (Mark Dibley) wrote in message <news:edacfd3c.0312171254.1f5d0cb3@posting.google.com>… > Hello > Specifically I am looking for a site that offers good home induction > loops. I am also looking for an explaination/products that can link a > telephone (ringer), T.V. and HiFi to the loop. > My understanding is that an audio out from the TV and HiFi can be > plugged into the loop so that their audio output is transmitted over > the loop (is this right?). Can you get telephone’s that do the same? > Are there other products/uses that I am missing? > I would be greatful for any advice/information anyone can provide. > Thank you > Mark

I did a google web search for induction loops and came up with all kinds of information here are two links. http://www.rnid.org.uk/html/factsheets/equip_the_domestic_loop_system… http://www.ovalwindowaudio.com/loopintro.htm

Response:

A member of this group once set out details of how to instal an induction loop. Do a search under OOHR…@USMC.net plus loop or loops. I didn’t try his method but it seemed to me to be sound.

Response:

"ken kerrison" <kkerri…@ozemail.com.au> wrote in message

news:9d801830.0312190058.88ec7cd@posting.google.com… > A member of this group once set out details of how to instal an > induction loop. Do a search under OOHR…@USMC.net plus loop or loops. > I didn’t try his method but it seemed to me to be sound.

I did barrel rolls and immelmans in the Marines, and got looped more than once, but no loops since. So that probably wasn’t me unless it was a response to a specific question. I can provide the physics and electronics, but not the practicalities. 72.4% of all statistics are made up on the spot!

Response:

Mark take a look at the Minicon I purchased this (from someone else) and used it to just loop my telephone in my office. http://www.centrumsound.com/tv.html It may be just what you want. btw. there are several ways to interconnect your telephone. I did see a great free book that really has many other homemade devices. If I find it, I will post here. Charlie Mark Dibley <dib…@biochem.ucl.ac.uk> wrote in message

news:edacfd3c.0312171254.1f5d0cb3@posting.google.com… – Hide quoted text — Show quoted text -> Hello > I have tried to search through this group’s messages for my answers, > but found that it is probably quicker to ask and hope someone can > help. > I am new to the world of Induction Loops, but I do understand > basically how they work. What I am looking for is a website or some > advice about products that can incorporated into it. > Specifically I am looking for a site that offers good home induction > loops. I am also looking for an explaination/products that can link a > telephone (ringer), T.V. and HiFi to the loop. > My understanding is that an audio out from the TV and HiFi can be > plugged into the loop so that their audio output is transmitted over > the loop (is this right?). Can you get telephone’s that do the same? > Are there other products/uses that I am missing? > I would be greatful for any advice/information anyone can provide. > Thank you > Mark

Response:

Hello I have tried to search through this group’s messages for my answers, but found that it is probably quicker to ask and hope someone can help. I am new to the world of Induction Loops, but I do understand basically how they work. What I am looking for is a website or some advice about products that can incorporated into it. Specifically I am looking for a site that offers good home induction loops. I am also looking for an explaination/products that can link a telephone (ringer), T.V. and HiFi to the loop. My understanding is that an audio out from the TV and HiFi can be plugged into the loop so that their audio output is transmitted over the loop (is this right?). Can you get telephone’s that do the same? Are there other products/uses that I am missing? I would be greatful for any advice/information anyone can provide. Thank you Mark

Response: