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Summary of Contents for MartinLogan Purity
- Page 1 u r i t y Fully Powered Hybrid Electrostatic Loudspeaker ’...
- Page 2 Serial Numbers: _______________ / _______________ Record your serial numbers here for easy reference. You will need this information when filling out your warranty registration. Purity’s serial num- ber is located near the bottom of the backplate and on the shipping container.
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Page 3: Table Of Contents
Electrostatic Advantages . . . . . . . . . . . . . . 14 MartinLogan Exclusives . . . . . . . . . . . . . . . 15 Full Range Operation CLS™... -
Page 4: Installation In Brief
Remove your new Purity speakers from their packaging. Step 2: Placement Place each Purity at least two feet from the back wall and angle them slightly toward your listening area. This is a good place to start. Please see the Placement section (pages 8–11) of this manual for more details. -
Page 5: Introduction
Purity provides an unprecedented level of system connection flexibility. Equipped with a standard line-level input, the Purity is able to connect directly to devices such as digital music players, flat screen televisions or even computers. Additional speaker level inputs also allow Purity to exist in a more traditional receiver or pre-amp equipped 2-channel or home theater system. -
Page 6: Connections & Controls
• Receiver / Pre-Amp (using pre-amp outputs) Connection is achieved by connecting an RCA cable from the output on the device to the Line Level input on the Purity. If your output device is not equipped with an RCA style output connector we recommend using a 3.5mm stereo... -
Page 7: Speaker Level Connection
Bass Level Control On the rear panel of the Purity electronics module is a three position Bass Level switch that allows you to select the type of low frequency response you desire. -
Page 8: Placement & Room Acoustics
The Side Walls A good rule of thumb is to have the side walls as far away from the speaker sides as possible. However, MartinLogan’s unique controlled dispersion electrostatic transducer inher- ently minimizes side wall reflections—a position as little as two feet from the side walls often proves adequate. -
Page 9: Final Placement
1 Turn off you amplifier. Unplug the speakers and discon- nect all wires from the back of the Purity. 2 Using a blanket to protect Purity’s cabinet, place the speaker on its side. 3 Loosen and remove the hand nut on bottom of the speaker. -
Page 10: The Extra "Tweak
Ideally, your room should not contribute to that information. However, every room does con- tribute to the sound to some degree. Fortunately MartinLogan had designed the Purity to minimize these anomalies Terminology... -
Page 11: Rules Of Thumb
7), which are available from your local MartinLogan dealer or from the Xtatic shop at www.martinlogan.com. With the use of these spikes, the Purity will become more firmly planted on the floor and, consequently, bass will tight- en and imaging will become more coherent and detailed. -
Page 12: Dispersion Interactions
As you can see from the illustrations, your Purity speakers project a controlled dispersion pattern (see figure 13). Each Purity is a 28 inch line source beginning 2 inches above the base. This vertical dispersion profile minimizes interac- tions with the floor and the ceiling. -
Page 13: Home Theater
Good subwoofers will provide a foundation for the rest of the system. Figure 14 . Purity speakers as front channels, Vignette speakers above the television and along the back wall as the center and surround (effects) channels, and Dynamo subwoofers in the front corners as the 0.1 (effects) channel. -
Page 14: Electrostatic Advantages
Electrostatic Advantages dvantages push-pull operation and is a major contributor to the sonic purity of the electrostatic concept due to its exceptional linearity and low distortion. Since the diaphragm of an electrostatic speaker is uniform- ly driven over its entire area, it can be extremely light and flexible. -
Page 15: Martinlogan Exclusives
The Purity uses no crossover networks above 50 Hz because they are not needed. The Purity consists of a single, seamless electrostatic membrane reproducing all frequen- cies above 50 Hz simultaneously. How is this possible? First we must understand that music is not composed of separate high, mid and low frequency pieces. -
Page 16: Cls™ (Curvilinear Line Source)
By curving the horizontal plane of the electrostatic transducer, a controlled horizontal dispersion pattern could be achieved, yet the purity of the almost massless electrostatic diaphragm remained uncompromised. After creating this technology, MartinLogan developed the production capability to bring it out of the laboratory and into the market place. -
Page 17: Electrostatic Loudspeaker History
However, Lodge had no intention for his device to reproduce music because in 1898 there was no way to amplify an electrical signal! As a result, his speaker had nothing to offer over the acoustical gramophones of the period. It was not until 1906 that Dr. - Page 18 The test instrument needed an extremely accurate speaker, but Janszen found that the cone speakers of the peri- od were too nonlinear in phase and amplitude response to meet his criteria. Janszen believed that electrostats were inher- ently more linear than cones, so he built a model using a thin plastic diaphragm treated with a conductive coating.
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Page 19: Frequently Asked Questions
Why does my speaker make popping noises and hums? The Purity features a built in muting circuit that will detect popping anomalies and minimize them. When using the speaker level inputs a popping noise may occur when the amplifier is turned on or off. This is caused by grounding interaction between the speaker and the amplifier. - Page 20 How do MartinLogan speakers hold up over a long term in the humidity of tropical climates? We should tell you that MartinLogan indeed has a very substantial number of customers in tropical regions of the world. Our speakers have been serving them nicely for many years.
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Page 21: Troubleshooting
Do they have the same amount of toe- in? Try moving the speakers away from the back and sidewalls. • Check the polarity of the speaker wires. Are they con- nected properly? • Try switching the left speaker with the right. -
Page 22: Service
Warranty Registration card on file! If you did not receive a Certificate of Registration with your new Purity speakers you cannot be sure of having received new units. If this is the case, please contact your authorized MartinLogan dealer. -
Page 23: Dimensional Drawings
imensional rawings Dimensional Drawings... -
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 Notes...
- Page 28 Improper voltage can cause damage that will be potentially expensive to repair. The Purity 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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