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Owners Manual and Set-up Guide:
Genesis 928 Subwoofer
Contents
A QUICK START SET-UP GUIDE 3
SAFETY TIPS 3
CONNECTIONS 3
PLACEMENT OF THE SUBWOOFER 3
ADJUSTING THE CONTROLS 4
SETTING-UP THE G928 5
POSITIONING THE G928 FOR MUSIC 5
POSITIONING THE G928 FOR HOME THEATER 6
LFE INPUT 6
LFE GAIN 7
LFE OUTPUT 7
CONNECTING UP YOUR G928 7
POWER 7
SPEAKER-LEVEL CONNECTIONS 8
LINE-LEVEL CONNECTIONS 8
CONNECTING ONLY ONE SUBWOOFER 9
MAKING YOUR SYSTEM SOUND RIGHT 9
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~ÄëçäìíÉ=ÑáÇÉäáíó™ A Message from Genesis Congratulations! You are now the owner of one of the finest sub- woofers available for music and home theater systems. The Genesis 928 delivers bass as intended by the musical performer, or as intended by the movie director. This is what we call absolute fidelity™. In this case, we mean that the bass is faithful to the event. It plays as loudly and as deeply as sub-woofers from other brands costing much more, and outperforms them in terms of th
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~ÄëçäìíÉ=ÑáÇÉäáíó™ A Quick Start Set-up Guide Now that you have your new Genesis 928 subwoofer, we realize that you can’t wait to hook it up and start playing! Nevertheless, please read this quick start guide NOW before you start setting it up. Safety Tips The G928 is a powered subwoofer with a built-in amplifier: it needs to be connected to a power socket that is always on. Make sure that you are using the correct voltage, and keep it away from water and direct heat. Connections T
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~ÄëçäìíÉ=ÑáÇÉäáíó™ using your G928 this way, place it just behind and to the outside of your existing loudspeakers. (The right one if you have only one G928) If you are using the G928 for a home theater LFE channel, place it about one-third of the way in-between your main left and right speakers. Adjusting the Controls For music, find the spec sheet of your existing main loudspeakers, and adjust the Low Pass frequency to the –3dB point (if you can’t find that, set it to 63Hz – the 12
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~ÄëçäìíÉ=ÑáÇÉäáíó™ Setting-up the G928 While it is relatively easy to add a subwoofer into your system and hear more bass, it is not as easy to integrate a subwoofer well into your system. The Genesis 928 makes it easier than most other subs because the servo system makes the G928’s bass quick, clean and articulate. This means that no matter what main speakers you use, the G928 will integrate well with them, even fast electrostatic or magnetic planar speakers. However, the most impor
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~ÄëçäìíÉ=ÑáÇÉäáíó™ same clarity and loudness. Avoid places where some notes “hang” or sound louder or softer. You may find a couple of spots, so choose the most convenient one. 4. Once you find that spot, move the G928 to this spot, and hook it back up. When you’re back in the listening seat, the bass should sound clean, tight and smooth. Positioning the G928 for Home Theater If you have a dual purpose system, music and video, you might consider following the music setup instructions
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~ÄëçäìíÉ=ÑáÇÉäáíó™ speakers as well as deliver the LFE channel without resorting to digital bass management on the processor. On the home theatre processor, set the front speakers to “LARGE” and sub-woofer to “YES”. Then, take the sub-woofer line-level output from the processor, and plug it into the “LFE IN” connector on the G928. Connect the subwoofer to the front two speakers. LFE Gain The G928 has a knob that controls LFE GAIN separately from the BASS GAIN. This allows you to have
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~ÄëçäìíÉ=ÑáÇÉäáíó™ We recommend against the use of an extension cord for the AC power. If you are forced to use an extension cord, make certain that it is as heavy duty an extension cord as you can find. The G928 running at full tilt can draw up to 10amps from your power supply, so make sure that whatever you plug your subwoofer into can handle that! Speaker-level connections To connect the high level inputs of the Genesis 928 subwoofer, take the output of your power amplifier and,
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~ÄëçäìíÉ=ÑáÇÉäáíó™ If your preamplifier has only one set of balanced outputs and one set of unbalanced (RCA) type outputs, choose your first preference of connection for the amplifier that is driving your main speaker. Use the remaining set of outputs to feed the subwoofer amplifier. Connecting only one subwoofer If you are using only one subwoofer, connect both the left and the right low level or high level inputs into the one Genesis 928 subwoofer. The Genesis 928 will automaticall
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~ÄëçäìíÉ=ÑáÇÉäáíó™ Adjust the low pass filter to 63. Set the gain control to 6. At this point, you can turn on the woofer amplifier. Tuning the system in Music is the best way to begin your setup procedure. We suggest that video sources be used only after you have setup the system to properly reproduce music. Set the low pass filter to the -3dB point of your main left/right speakers, and the gain to 30, and start from there. If you don’t know the –3dB point of your main left/right s
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~ÄëçäìíÉ=ÑáÇÉäáíó™ closer together in order to achieve better mid bass coupling between the main speakers. If it sounds too “fat” turn the low pass filter down or adjust the gain. At this point it is suggested to use the low pass filter control until you get to the refinement stage. Low bass If you find that there isn’t enough deep bass, your first remedy is the gain control on the woofer amplifier. This has several limitations. First, turned up too high, you may get some distortion
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~ÄëçäìíÉ=ÑáÇÉäáíó™ remember to enjoy your music and video as you work on perfecting your setup. One idea that we would like to suggest is that you set the bass gain controls for music, and use your processor to turn it up for home theater. That way, you have a subwoofer that will take care of all your needs. 12 12 12 12
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~ÄëçäìíÉ=ÑáÇÉäáíó™ The Technology The Servo Advantage Very few loudspeakers use servo drive, either because most designers think that it is too difficult to design, too expensive, or because of the extraordinary demands a servo system makes on the amplifier and the transducer. However, the Chief Scientist of Genesis, Arnie Nudell, first introduced the servo system in the legendary Infinity Servo Statik One in 1968(!) – so we know how to design and build servo systems. The concept of
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~ÄëçäìíÉ=ÑáÇÉäáíó™ The best amplifier for this application is a Class-D switching amplifier. One of the reasons is dramatically increased efficiency, especially at the lower frequencies. The typical Class A/B amplifier is only 50% efficient. A Class-D amplifier, on the other hand, can be 90% efficient. A Class-D amp puts out more power and less heat, and with less power consumption, and is ideal as an amplifier for a subwoofer. In the Genesis 928, we use a proprietary ultra-efficient d
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~ÄëçäìíÉ=ÑáÇÉäáíó™ Specifications Dimensions: 17” x 16.5” x 15.75” (w x h x d) (430mm x 419mm x 400mm) Frequency Response: 20Hz to 120Hz +/- 1dB 16Hz to 180Hz -3dB, +2dB Weight: 84.5 lbs (38.4 kg) Inputs: High-level left and right; Low-level left and right; LFE low-level mono Outputs: LFE low-level mono buffered Controls: Variable low-pass filter Variable bass gain control Variable LFE gain control Phase switch 0º, 180º Fini
