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Summary of Contents for MartinLogan Speaker
- Page 1 E S C E N T ’...
- Page 2 Improper voltage can cause damage that will be potentially expensive to repair. The Descent i is shipped to authorized MartinLogan distributors with the correct power supply for use in the country of intended sale. A list of authorized distributors can be accessed at www.martinlogan.com or by emailing info@martinlogan.com.
- Page 3 Thank you—to you the MartinLogan owner, for loving what we do, for making it possible for us to do what we love.
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Page 4: Table Of Contents
Home Theater....... . . 19 MartinLogan Exclusives ......20 BalancedForce™... -
Page 5: Installation In Brief
Please see the Controls and Connections section (pages 6–15) for more details. If you plan to connect your subwoofer using Speaker Level (high level) inputs, please refer to the 2-Channel Mode Using Speaker Level Inputs section (page 12 for more details. -
Page 6: Controls And Connections
When connected Figure 1. Top control panel. Introduction in 2-channel mode (via its speaker or line level left/right input), the low-pass filter is active. As a general rule the Low Pass Filter should be set at the option approximately equal to (or below) 70% of your main speaker’s... - Page 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. For instance, if your room has a peak at the subwoofer crossover area, you may wish to set the phase so the actual acoustic outputs of the subwoofer and main speakers are out of phase.
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Page 8: Rear Connection Panel
Speaker Level In This set of binding posts pro- vides a place to connect the subwoofer using standard speaker cable. Descent i’s Low Pass Filter control effects the signal received through these inputs. Controls and Connections Figure 3. -
Page 9: 2-Channel Mode
Recommended Control Settings (see figure 5): 1 Calculate the number equal to 70% of your main loud- speaker’s lowest frequency rating. Set the Low Pass Filter switch to the closest setting below the resulting number. 2 Play familiar music with bass content. Increase the Level control until the music has deep extended bass. -
Page 10: Multi-Channel Mode
Theater, and Script i) not be run in large, wide or full range mode. Doing so may potentially dam- age the speaker if the processor attempts to drive the speaker beyond its rated frequency range. This warning also applies to products from other manufacturers. -
Page 11: 2-Channel/Multi-Channel Mode
MartinLogan loudspeakers, we suggest you start with Phase set at 90°. 5 Use the bass management section of your processor’s speaker setup to set the subwoofer level at an appro- priate level. Follow the instructions in your processor’s manual to fine-tune the subwoofer level. -
Page 12: 2-Channel Mode Using Speaker Level Inputs
Speaker Level In binding posts. It is also possible to connect the left and right outputs of your amplifier to the left and right speaker level (high level) inputs of the subwoofer and run an additional set of cables from your subwoofer to the speakers. -
Page 13: 2-Channel Mode With 2-Channel Output
2-Channel Mode With 2-Channel Output 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. -
Page 14: Sub Out-Using Multiple Subwoofers
Sub Out—Using Multiple Subwoofers 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. -
Page 15: Ac Power Connection
AC Power Connection 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. The IEC cord should be firmly inserted into the AC power receptacle on the rear connection panel of the subwoofer, then to any convenient AC wall outlet. -
Page 16: Placement
Your efforts will be rewarded. 16 Placement Figure 16. Descent i Subwoofers as the LFE (effects) channels, MartinLogan Summit speakers as front channels, MartinLogan Stage as the center chan- nel, MartinLogan Script i as side surround (effects) channels. Note the corner placement of the Descent i at the front of the listening room. -
Page 17: Room Acoustics
Your 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. -
Page 18: Solid Footing
The feet that attach to the bottom of the Descent i use a common... -
Page 19: Home Theater
It is important that the same manufacturer of the front speakers design the center speaker and that it is recommended for use as a center speaker. This is not the place to cut corners. Surround Speakers The surround, or effect speakers contain critical informa- tion. -
Page 20: Martinlogan Exclusives
This occurs significantly in almost all non-servo-controlled subwoofers. MartinLogan Exclusives MartinLogan’s advanced servo system uses a sophisticated monitoring and control circuit to detect and instantaneous- ly correct any deviation between acoustical output and electrical input. The result? A reduction in distortion for the purest possible low-frequency reproduction. -
Page 21: Frequently Asked Questions & Troubleshooting
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.martinlogan.com) that cleans better than anything else we have tried. Is it safe to set things on my subwoofer? -
Page 22: Dimensioned Drawings
IMENSIONAL RAWINGS Plan View (Top) Front Elevation Back Elevation Side Elevation Dimensional Drawings... -
Page 23: General Information
Should you be using a MartinLogan product in a country other than the one in which it was originally purchased, please note the following: 1 The appointed MartinLogan distributor for any given country is responsible for warranty servicing only on units distributed by or through it in that country in accordance with its applicable warranty. -
Page 24: Glossary Of Audio Terms
It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker’s imped- ance changes with frequency, it is not a constant value. - Page 25 Sensitivity. The volume of sound delivered for a given electrical input. Stator. The fixed part forming the reference for the moving diaphragm in a planar speaker. THD. The abbreviation for total harmonic distortion. (See Distortion) TIM. The abbreviation for transient intermodulation distortion.
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Page 26: Notes
OTES Notes... - Page 27 OTES Notes...
- Page 28 Improper voltage can cause damage that will be potentially expensive to repair. The Descent i is shipped to authorized MartinLogan distributors with the correct power supply for use in the country of intended sale. A list of authorized distributors can be accessed at www.martinlogan.com or by emailing info@martinlogan.com.
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