Instruction/ maintenance manual of the product Speaker MartinLogan
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D ESCENT i user’s manual TM.
Serial Number ___________________________________ Record your serial numbers here for easy reference. You will need this information when filling out your warranty registration. Descent i’s serial number is located near the bottom of the backplate and also on the shipping container.
Thank you—to you the MartinLogan owner, for loving what we do, and for making it possible for us to do what we love..
4 Contents & Introduction Contents & Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4 Installation in Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Controls and Connections . . . . . . . . . . . . . . . . . .
Installation in Brief 5 We know you are eager to hear your new MartinLogan subwoofer, so this section is provided to allow fast and easy set up. Once you have your subwoofer operation- al, please take the time to read, in depth, the rest of the information in this manual.
6 Introduction C ONTROLS AND C ONNECTIONS Figure 1. Top control panel. The control panel is located behind the inset metal plate located on top of the subwoofer. To access the control panel, gently press the area above the MartinLogan logo. When the spring releases gently pull the metal plate away from the subwoofer.
Controls and Connections 7 configuration of your listening environment, the placement of the unit, and your seating arrangement. Due to the way bass sound waves develop in different rooms, there is no rule of thumb for setting phase.
8 Controls and Connections Sub Out For systems utilizing multiple subwoofers. Connect Sub Out to the LFE Input or Right In / Left In on additional sub(s). Right Out / Left Out Should only be used if con- necting this sub between a pre-amp and amplifier.
WARNING! Turn the Master Power switch Off and unplug it before making or breaking any signal connections! 2-Channel Mode This setup is recommended if your subwoofer will be used in a 2-channel only system. When a signal is connected to the subwoofers Left In/Right In, the Low Pass Filter control is active.
Multi-Channel Mode This setup is recommended if you will use your subwoofer in a dedicated home theater or multi-channel system. When a signal is connected to the subwoofer’s LFE In, the L ow Pass Filter control is NOT active. Your processor handles most of the bass management.
This setup is recommended if your subwoofer will be used in both 2-channel mode and as a LFE chan- nel in a multi-channel system. By following this setup, you will allow your processor to handle most .
This setup is recommended if your subwoofer will be used in a 2-channel only system with full-range front loudspeakers. When a signal is connected to the subwoofer’s Left In/Right In subwoofer’s Low Pass Filter control is ac t ive.
This setup is recommended if your subwoofer will be used in a 2-channel only system. Signal Connection (see figure 11): 1 Connect the left out/right out from your preamplifier to the Left In/Right In of the subwoofer. Use quality RCA interconnects. 2 Connect the Left Out/Right Out of your subwoofer to the left in/right in of your amplifier.
Using Sub Out offers an easy way to implement multiple subwoofers in your audio/video system. Note: Additional subwoofers must run as either dedicated 2-channel (stereo) or multi-channel (LFE) subwoofers, but not both. Signal Connection: 1 Connect the first subwoofer to your system using one of the five modes previously described.
AC Power Connection Figure 15. Descent i’s Master Power switch, Fuse, and AC Power receptacle. Replacing the F use WARNING! The power cord should not be installed, removed, or left detached from the subwoofer while the other end is connected to an AC power source.
Listening Position Generally, subwoofers have the most output when placed in the corner of a room. However, this can also exagger- ate the subwoofers output making blending difficult. We recommend starting by placing the subwoofer in a corner. It should be placed in such a way that there are 2 inches between the grill and the wall.
Y our Room This is an area that requires both a little background to understand and some time and experimentation to attain the best performance from your system. Your room is actually a component and an important part of your system. This component is a large variable and can dramatically add to or subtract from a great sonic experience.
Solid F ooting After living and experimenting with your subwoofer, you may want to use ETC (energy transfer coupler) spikes sup- plied with the subwoofer (see figure 18). With the use of these spikes, the subwoofer will become more firmly planted on the floor and, consequently, bass will tighten and imaging will become more coherent and detailed.
It had long been the practice of stereo buffs to connect their television to the stereo system. The advantage was the use of the larger speakers and more powerful amplifier of the stereo system. Even though the sound was greatly improved, it was still mono and limited by the broadcast signal.
Resulting from an equal and opposite reaction to the cone's movement, strong bass causes all traditional subwoofer enclosures to generate acoustic vibrations.
How do I clean my subwoofer? Use a dust free cloth or a soft brush to clean your subwoofer. We recommend a specialty cloth (available through the Xtatic shop at www.
D IMENSIONAL D RAWINGS Plan View (Top) Front Elevation Back Elevation 22 Dimensional Drawings Side Elevation.
General Information 23 System Frequency Response 18–120 Hz ± 3 dB. Anechoic through the LFE effects input. Low Pass Filter Frequencies 30, 35, 45, 55, 65, 80Hz High Pass Filter Frequencies Bypass, 40Hz, 70Hz Phase 0° , 90° , 180° , 270° 25Hz & 50Hz Level ±10dB Power On, Auto, Standby Components 3 × 10” (25.
24 Glossary of Audio Terms AC. Abbreviation for alternating current. Active crossover. Uses active devices (transistors, IC’s, tubes) and some form of power supply to operate. Amplitude. The extreme range of a signal. Usually measured from the average to the extreme.
Glossary of Audio Terms 25 Inductance. The property of an electrical circuit by which a varying current in it produces a varying magnetic field that in troduces voltages in the same circuit or in a nearby circuit. It is measured in henrys. Inductor. A device designed primarily to introduce induc- ta nce into an electrical circuit.
26 Notes N OTES.
Notes 27 N OTES.
2101 Delaware Street, Lawrence, Kansas 66046, USA tel 785.749.0133 fax 785.749.5320 www.martinlogan.com ©2006 MartinLogan. All rights reserved. Rev. #110206 ® WARNING! Do not use your Descent i loudspeakers outside of the country of original sale—voltage requirements vary by country.
An important point after buying a device MartinLogan Speaker (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought MartinLogan Speaker yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data MartinLogan Speaker - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, MartinLogan Speaker you will learn all the available features of the product, as well as information on its operation. The information that you get MartinLogan Speaker will certainly help you make a decision on the purchase.
If you already are a holder of MartinLogan Speaker, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime MartinLogan Speaker.
However, one of the most important roles played by the user manual is to help in solving problems with MartinLogan Speaker. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device MartinLogan Speaker along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
