Sound is an important part of the Mac experience. Adding speakers to your system is a good way to enhance the experience of music, movies, games, and other multimedia. The five basic types of speakers you might be able to use with your Mac include
Choosing and Installing SpeakersAs with other system components, choosing speakers is primarily a task of balancing how much you want to spend versus how demanding you are in terms of quality. And, you need to determine whether your Mac can support digital sound. In either analog or USB, speaker sets come with a number of speakers. A basic set has two speakers; however, unless you have a very small budget, you should get a set that also includes a subwoofer. More advanced digital 5.1 speaker sets can have six speakers to provide full surround sound. NOTE As mentioned earlier, surround sound is an area in which Macs trail PCs. Sound cards that provide true surround sound are available for PCs, but at the time of this writing, few are available for the Mac. One that is available is the M-Audio Revolution 7.1. This card enables PowerMac G4s to join their newer PowerMac G5 brethren in the world of digital audio. Unfortunately, at press time, the driver for this card had not been updated to support Mac OS X version 10.4. A good choice for many systems is Harman Multimedia SoundSticks (see Figure 30.7). These USB speakers provide excellent sound, and they are among the best-looking speakers around. Because they are USB based, all modern Macs can use them. Figure 30.7. SoundSticks sound as good as they look.If you have a Power Mac G5 or have installed a digital audio card in a Power Mac G4, you should get a set of speakers that takes advantage of the advanced audio capabilities of these machines to provide true 5.1 digital surround sound (see Figure 30.8). Figure 30.8. These Logitech Z-680 5.1 speakers enable a Power Mac G5 to rock your world.Installing speakers requires that you provide power to the subwoofer, attach all the satellite speakers to it, and then connect the subwoofer to your Mac (via the headphone or speaker jack, via a USB port, or to the digital audio out port). If you use Apple Pro speakers, you attach them to the Apple Pro speaker port. Using SpeakersYou can control the audio output of your system in several ways. Some speakers come with volume and other controls on one of the satellites or on the control hub in the case of surround sound speakers. You can control the system volume of your Mac through the keyboard volume controls on the Apple Pro keyboard or on the PowerBook's and iBook's built-in keyboard. Other keyboards, such as the excellent Logitech Duos, provide volume wheels that you use to control your system's volume. You can also use the Sound pane of the System Preferences application to set sound levels. At the bottom of the pane, you can use the "Output volume" slider to set the general sound level for your system, or you can mute it. You can also choose to install the Volume menu on the Mac OS X menu bar. If you do so, you can set the volume level by clicking the speaker icon on the menu bar and setting the volume level with the slider. NOTE You can also control volume using controls within specific applications, such as iTunes or iMovie. When you do so, the volume control in the application changes the volume of that application's output relative to the system volume level. When you use the volume controls on an Apple Pro keyboard, you change the system volume level. The Sound pane of the System Preferences application has three tabs: Sound Effects, Output, and Input. On the Sound Effects tab, you can set the relative volume level of alert sounds, the alert sound you want to use, the audio controller through which alert sounds play, whether user interface sound effects play, and whether you hear feedback when you change the volume level using the keys on the Apple Pro or other keyboard. Select the alert sound you want to use by clicking it on the list. You then hear a sample of the sound you select. When your Mac needs to get your attention, it will play this sound (see Figure 30.9). Figure 30.9. The Sound Effects pane of the System Preferences application provides complete control over your Mac's sound effects, such as the alert sound.One of the nice features of Mac OS X is that, with some speakers such as USB SoundSticks, you can set the alert sound to play through the Mac's internal speaker while the rest of the sound plays through the external speakers. You do this by setting "Internal speakers" on the "Play alerts and sound effects through" pop-up menu. This means that alert sounds play through the Mac's built-in speaker(s) rather than through the external speakers, such as SoundSticks. This prevents you from being jarred by an alert sound when listening to loud music or movies. NOTE If you use external analog speakers that get their output from the analog audio out on your Mac, you can't choose those speakers separately from the Mac's built-in audio controller because the Mac's controller controls the output to the that port. Only when you use USB or digital speakers, such as the SoundSticks, or when you install a PCI sound card, can you configure separate sound output devices. Set the volume level of alerts by using the "Alert volume" slider. If you do have alerts play through internal speakers while other sound plays through external speakers, you likely need to set the alert volume level relatively high to be able to hear it over the sound coming from the external speakers. If you check the "Play user interface sound effects" check box, you will hear sound effects for various actions, such as when you empty the Trash. If you check the "Play feedback when volume keys are pressed" check box, you will hear a sound when you change the system volume level using the volume keys on your keyboard. The louder the volume setting, the louder the feedback sound. Use the Output tab to select and configure the output devices you want to use to play sound other than system alerts (see Figure 30.10). When you install additional devices, such as SoundSticks, you see each device in the output device list. Choose the device you want to use to play sound and then configure the settings for that device. The settings you have depend on the device you have installed. For example, with SoundSticks, you can control the balance of the satellite speakers. When you are using digital audio output, you will have more control over sound output, including setting the relative volume level among the various speakers. Figure 30.10. The Output tab of the Sound pane of the System Preferences application enables you to configure the balance of external speakers.NOTE If you install an audio PCI card, you use that card's software to make adjustments. This usually includes an additional preference pane installed in the Other section of the System Preferences application. Use the Input tab to configure sound input devices, such as the audio in port or USB microphones (see Figure 30.11). A list of all sound input devices appears in the upper part of the pane. You can use the "Input volume" slider to set the input volume level for the selected device. Use the "Input level" display to monitor the input volume being received by the input device. The "blips" show you how "loud" the input sound is. A blip remains at the highest level of sound input to show you where the maximum is. Generally, you should set the level so that most of the sound is coming in at the middle of the range. Figure 30.11. You can use the Input tab to set the input volume for devices you will use to record sound or for other reasons (such as speech recognition). |