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MP3 Players Audio and Sound Systems
MP3 Players, audio and sound systems are relatively new. They are more compact than the earlier CD players, and are not prone to skipping. These devices can also store more songs than previous gadgets.
4,383 Questions
How do you measure speaker ohms?
Usually speakers are rated by DC impedance, so you can use a simple multimeter to measure their resistance. Typical values are 4 to 32 ohms.
1200 watt max is the RMS watt half of the max?
NO! The maximum power rating of some amplifiers can be five or ten TIMES the RMS, or continuous, power output the amp is capable of. This problem is far worse from low quality imported amplifiers than from more reputable higher quality ones. Always look for the CEA power rating on the box, if it is available. This is a government regulated program which ensures the consumer is aware of actual amplifier performance.
the most impotant thing in busin. com. are Good communication skills, that matters because business
organizations are made up of people. As Robert Kent, former
dean of Harvard Business School has said, "In business,
communication is everything."
How are gramophone records made?
Early gramophone records where made from a wax master, which was engraved directly by the sound waves of the audio source in an analogue direct fashion, using a reversed horn.
From the wax master a mould was made, which was used to mechanically "press" gramophone records - originally made from Shallac.
How much is left if theres 499 MB out of a 2 GB?
1,501 Mb's if in decimal form (used for File Storage Space)
Basic math tells me: 2,000 - 499 = 1,501
To check this answer, we would reverse the problem as so:
1,501 + 499= ?2,000?
In terms of REAL AND VIRTUAL memory, 1 GB is actually 1024 Mb's, so 2 Gb will be 2048 Mb's. So if you are speaking about RAM, the math problem would actually be
2048 - 499 = 1549 Mb's
Hard Drive manufacturers base their storage space on the Decimal value, so when you go get a 80 Gb, for instance, your actual storage space for file's is only 80,000 Mb's when in all actuality, it should be 81,920. So instead of having 80 Gb's, you really only have 78.12(5) Gb's.
Is there a GB to MB converter for Macintosh download?
On any computer (Mac or PC) to convert GB to MB simply multiply GB by 1024 and that is how many MB you have.
Audio filtering is a process of increasing the wanted frequencies in the sound spectrum and decreasing the unwanted frequencies as well. Adobe Audition is a software program that allows the audio engineer or audio forensic expert to filter unwanted sounds out of a recording while boosting the wanted frequencies. Speech for example is usually found between 800Hz and 3000 kHz. Speech is an example of a wanted sound.
Tape hiss is usually found between 8000 kHz and 12,000 kHz and is an example of an unwanted sound.
How do you wire a speaker volume control?
This is strictly dependent of the type of control being used. If you just have a potentiometer (variable rotary resistor) then connect ONE wire from the source to the middle (wiper) terminal on the Pot. then from either other terminal on the Pot. continue the circuit to the speaker.
This just limits the amount of signal going to one speaker. THIS IS ONLY APPLICABLE WHEN ONE SPEAKER IS USED. If you could direct me to the instructions that came with your controller, I could help you out.
See my Bio.
If you purchased this from a Radio Shack, or similar electronics supplier, tell me the part, model number and I look it up for you.
ABOVE ANSWER IS TOO SIMPLISTIC....
Speaker volume control, done properly, is not a matter of just adding resistance (or variable resistance) to the line. Properly done, the amplifier's output impedence must be matched to maintain proper loading and avoid premature burnout and distortion.
Dynamic speaker connections (2, 4, 8 ohm, for example) can have a volume control added by using a potentionmeter (variable resistor) with decent results and without doing damage or getting too much distortion. For most applications this is okay.
What you need for a simple resistance control:
A 2-gang potentiometer of about 15 to 25 ohms rating. Here's more than you'll ever need to know: http://beavishifi.com/articles/Volume_Control/index.htm
THE RIGHT WAY:
The right way to do this is to use an 'impedence matching' control. These controls allow you to put on strings of speakers yet maintain a constant impedence to the amplifier output (up to the power limit of the amp, of course).
Here, now, is what you need: http://www.audioc.com/accessories1/misc/vcontrol.htm
ANOTHER WAY:
There is another way to do all this.. that is if you have pro-grade amps. You can use what is called 70volt lines. 70volt amp outputs allow you to string many speakers down the line (each with its own step down transformer, not hard to wire or figure out). If this is of interest then you may want to Google it and go from there.
HOPE THIS HELPS.. Caio!
Which is the free site to download the mp3 Christmas songs?
The happiest thing about Christmas is enjoying your favorite Christmas songs with your family. Therefore, many people like to download their favorite Christmas songs to their mobile phones or burn them to CDs before Christmas. But almost all streaming music services don't allow users to do this. So if you want to download Christmas songs to your phone for free or burn them to CD, you need a third-party download tool like KeepMusic YouTube Music Converter. KeepMusic YouTube Music Converter can help you download your favorite Christmas songs from YouTube Music to the local computer, and supports transferring the downloaded songs to mobile phones or burning them to CD, or other mobile playback devices. Let you share wonderful Christmas songs with your family when Christmas comes!
What does rds in user guide for jbl on time stand for?
I was wondering the same thing and found this answer:
The integrated FM/AM radio tuner is RDS-enabled, which means it can pick up metadata transmitted by some radio stations. A feature called TimeCrawler takes special advantage of this by seeking out stations that broadcast the time of day; it sets the clock automatically to that time.
Source: http://www.pcmag.com/article2/0,2817,1972812,00.asp
PLL is used for demodulation of?
Carrier signals that carry information by the process of frequency- or phase-modulation.
What is the difference between 2 ohm's and 4 ohm's related to subwoofers and sound?
Speakers need to be matched to the amplifier. This will allow maximum dynamic range of power before distortion. In extreme cases, overloading an amplifier can damage it.
A 4 ohm speaker requires a certain voltage and current to achieve a certain power. A 2 ohm speaker will require less voltage or greater current (ratio the square root of 2) to achieve the same power. The decision is based on the system design, including the design of the cross-over network, if there is one.
Will mp3 files still be available on your computer after you download iTunes?
Yes, you only have to remember not to delete the original files so iTunes can make its own library based on the music you have on your computer.
For most people: no For some people: A little For a few people: yes
