Tip & How-To about Audio Players & Recorders

Home Theater Subwoofer optimal placement locating technique.

This method will be easier and less time consuming than "crawling for bass." Required equipment needed but not limited to, an SPL meter and test tone generator.

Place your subwoofer firmly where your prime listening position will be, with the driver pointed in an unobstructed direction. It is best to place it exactly in your seating position at or near ear level if possible in whatever manner you deem is safe for you and your equipment. If using a downfiring model placed on a couch, sit on a peice of plywood.

Adjust the volume control as close as possible to where reference level would be at the lowest frequency for your subwoofer model.

Run sweep tone through the sub and measure output on your SPL meter from the possible locations that your subwoofer could be placed in the room. Place the meter as close as possible to where the subwoofer would be, either held in hand or tripod mounted, or any other placement method that does not subject the meter to vibration.
The position with the flatest response is ideal, however, differences in media usage or crossover setup then one may desire a higher output at a given frequency. This method will tell you exactly where to put the sub without having to move it around!

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1 Answer

Gas dryer won't ignit

If you are able to turn on the dryer but it is not drying the clothes, you'll need to test the the ignitor, flame sensor, high-limit thermostat, thermal fuse, or the heat selector switch.

You'll have to isolate each component from the circuitry by disconnecting or removing it altogether.

Test each component by using an ohm meter or continuity tester; preferably one with tone alert...much quicker and easier to use; you hear the tone you have continuity- it's good; keep and re-connect.

No tone or no resistance reading, part failure- replace.

Mar 08, 2015 | Dryers

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In most of the Amplifiers we have only Bass and Treble control (Bass works on 100 HZ and Treble works on 10KHz - approximately). In some Amplifiers we have Mid range control also. What is the frequency range it will control. Now a days Equalizer equipments (5 band, 7 band ...) were becoming less important. Is this statements were true.

The frequency of mid range control is about 1KHz. The bass and treble are usually enough to set the tone of sounds and music, and if the customer has high quality speakers connected to the amplifier it is almost unnecessary to modify any tone. In my opinion you are right that x-band equalizer became less important now.
Thank you.

Mar 17, 2011 | Audio Players & Recorders

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Hi. I have just connected my Bose Acoustimass 6 series III speakers. When I run a MCACC test, the display shows 'noisy' and there is no error message. If I run it again it stops and shows just noisy after a few loud noise at the left front speaker. Any suggestions, please.

Either your ambient noise level is too high for the test, or you need to increase the volume for the test tones.

For any such audio calibration testing your ambient noise level should be as quiet as possible, preferably below the measurable level of an SPL meter...usually 50dB for most models.

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1 Answer

cinemate bose how do I adjust base and trebble

If the system doesn't have controls labeled "bass" and "treble" - or if there are no clever presets like "Hall", "Theater", etc., then you'll have to adjust these parameters before the signal reaches the speakers. One way is to purchase a graphic equalizer to hook between the speakers and the signal source. A graphic equalizer a basically a tone control, with the spectrum divided into 10 or more "slices" instead of 2 (bass and treble). Consider the sliders on the left as "bass", and the ones on the right as "treble". If you're using these speakers for a computer, some sound card software has these controls buried beneath a few menus - but sometimes not. The easiest solution is to buy an equalizer and hook it between the signal source and speakers. Bose is typically "audiophile" equipment, and many audiophiles don't want tone controls (thus the extra electronic processing required) to contaminate the signal. Obviously, most systems do need to offer some control to the user, as you've discovered!

Dec 24, 2008 | Bose Cinemate Digital Home Theater System...

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