MartinLogan Dynamo 1000W | Dynamo 700W | SWT-2 User Manual

Introduction

Congratulations on purchasing a world-class subwoofer. The MartinLogan Dynamo 1000W and 700W subwoofers are the result of extensive research and development, utilizing leading-edge technology for high-excursion drivers, precise amplification, and advanced filtering for deep, tight bass. High-quality materials ensure durability and lasting enjoyment. This manual explains operation and design philosophy for maximum performance.

Installation in Brief

This section provides a quick setup guide. For detailed information, refer to the Placement, Room Acoustics, and Connections sections. If persistent problems arise, contact your authorized MartinLogan dealer.

1. Unpacking: Remove the subwoofer from its packaging.
2. Placement: Start by placing the subwoofer in a corner near the front of the room. Refer to the Placement section (page 11) for more details.
3. Signal Connection: The subwoofers come with the SWT-2 wireless transmitter, but a physical wire connection is recommended for optimal performance. Connect preamplifier/processor outputs to the subwoofer's signal input using quality RCA interconnects. Refer to the Connections and Control Settings section (pages 8-10) for details.
4. Power Connection (AC): Ensure the level knob is set to 'Min'. Plug the subwoofer into a wall outlet. See the AC Power Connection section (page 10).
5. Setting the Controls: Set the level knob to a medium volume (12 o'clock) and the power switch to 'Auto On'.
6. Listen and Enjoy: Adjust your system and enjoy.

Before Connecting the Dynamo

Ensure all connections are tight. Turn the subwoofer OFF before making or breaking signal connections.

2-Channel Mode

Recommended for 2-channel systems with main speakers playing full range. Connect via left/right inputs and set the crossover to 'Variable (L&R In)' for the internal low-pass filter to be active. If using for both 2-channel and multi-channel, consider the 'Multi-Channel/LFE Mode' connection.

Signal Connection: Connect preamplifier's left and right outputs to the subwoofer's left and right inputs using RCA interconnects. Y-adapters may be needed if only one set of outputs is available.

Recommended Control Settings:

1. Crossover: 'Variable (L&R In)'
2. Low Pass Filter: Approximately 70% of your loudspeakers' lowest frequency response.
3. Level: Adjust while playing music with bass content until deep, extended bass is achieved, avoiding overwhelming levels.
4. Phase: Experiment with different settings for optimal blending. For MartinLogan loudspeakers, start with 90°.

Multi-Channel/LFE Mode

Recommended for dedicated home theater or multi-channel systems. Connect to the LFE input and set the crossover to 'Bypass (LFE In)' to allow the processor to handle bass management. This method is also recommended if using the system for both 2-channel and multi-channel listening.

Signal Connection: Connect the processor's LFE output to the subwoofer's LFE input using an RCA interconnect.

WARNING: It is recommended that center and effects speakers not be run in 'large' or 'full range' mode by the processor, as this may damage them. Use 'limited' or 'narrow' mode. Avoid routing the LFE channel to main or surround speakers.

Recommended Control Settings:

1. Crossover: 'Bypass (LFE In)'
2. Level: Set using your processor's bass management and speaker level setup options.
3. Processor Crossovers (if available): Start with Crossover: 70Hz, High-Pass: 12dB, Low-Pass: 24dB. Adjust based on room and preferences.
4. Phase: Adjust until ideal blending is obtained. If no difference is heard, set to 0°.
5. Fine-tune subwoofer level using the processor's manual.

AC Power Connection

WARNING: Do not install, remove, or leave the power cord detached while the other end is connected to AC power.

Insert the IEC power cord firmly into the subwoofer's AC receptacle and then into a wall outlet. The subwoofer features a signal-sensing power supply that automatically switches to standby mode after several minutes of no audio signal (when the power switch is set to 'Auto').

The subwoofer is wired for the country of original sale. Check the AC power rating on the packing carton and serial number plate. If moving the subwoofer to another country, ensure the AC power supply is suitable to prevent damage or impaired performance.

Replacing the Fuse

Turn off and unplug the subwoofer before replacing the fuse. Use a matching fuse.

Break-In

The custom woofers require approximately 50 hours of break-in at moderate listening levels for optimal performance.

Optional Wireless Connection

The Dynamo subwoofers include a wireless receiver for use with the MartinLogan SWT-2 Subwoofer Wireless Transmitter. To establish a wireless connection:

1. Press and hold the subwoofer's sync button for 3 seconds until the LED blinks quickly.
2. Press and hold the SWT-2 transmitter's sync button for 3 seconds until its LED blinks quickly. Successful pairing is indicated by both LEDs stopping blinking and remaining on. If the link is not established within 30 seconds, repeat the steps.

WARNING: For best performance, do not place the SWT-2 transmitter on the floor.

WARNING: Wireless operation may be susceptible to RF interference (2.4GHz band) from devices like microwave ovens, WiFi, game consoles, cordless phones, Bluetooth, and baby monitors. This can cause intermittent sound or popping noises. Physically separating problematic devices by at least two feet usually resolves the issue. Microwave oven interference only occurs when the oven is operating.

Diagram Description (Figure 6): An illustration shows the rear panel of the subwoofer with connection ports labeled '1' and '2'. Below it, the SWT-2 transmitter is shown with a connection cable. The diagram illustrates establishing a connection between the subwoofer and the SWT-2 transmitter.

Listening Position

Subwoofers generally have the most output in a room corner, but this can exaggerate bass and make blending difficult. Start with a corner placement. If bass is too boomy, try pulling the subwoofer away from the wall towards the listening position to smooth the response. Re-adjust controls after moving.

Diagram Description (Figure 7): Illustrates a room setup with subwoofers placed as LFE channels, MartinLogan speakers as front, center, and surround. It highlights corner placement at the front of the listening room.

Ask Your Dealer

Your MartinLogan dealer can offer expert advice and tools for optimal subwoofer placement.

Enjoy Yourself

The Dynamo subwoofers benefit from careful setup. Small changes can lead to significant improvements over time. Experiment with positioning to find the optimal relationship between your room, settings, and subwoofer.

Installing in a Cabinet

When installing in a cabinet, ensure a minimum of three inches of open space between the cabinet and the front and back sides of the subwoofer.

Diagram Description (Figure 8): Shows a cabinet with a subwoofer inside, indicating a minimum of three inches of open space required at the front and back.

Changing Woofer Orientation

The Dynamo subwoofers can be configured for front-firing or down-firing orientation. For cabinet installation, front-firing is recommended.

1. Prepare a flat surface with a blanket to protect the finish. Disconnect signal and power, remove the grill cloth.
2. Lay the subwoofer on its side. Use a coin to unscrew the attached feet (see Figure 10).
3. Change the location of the four feet.
4. Use a coin to reinstall the feet (see Figure 10).

Note: Two 90° RCA adapters are included. 90° RCA adapters may be needed for signal connections.

Diagram Description (Figure 9): Shows a sequence of illustrations demonstrating how the Dynamo 1000W and 700W subwoofers can be oriented front-firing or down-firing by repositioning their feet.

Diagram Description (Figure 10): A close-up view shows a coin being used to unscrew a foot from the subwoofer's base, illustrating the process of changing foot location.

Your Room

Your room is a critical component of your audio system and significantly impacts sound quality. Sound travels as waves, with bass frequencies having very long wavelengths. Your room acts like a swimming pool, reflecting and enhancing these waves based on its size, shape, and surface types. An ideal room would neither add to nor subtract from the audio signal, but most rooms do to some extent.

Terminology

• Standing Waves: Sound waves reflecting within a room can create patterns of excess or lack of bass, typically below 100Hz. Non-parallel walls create different standing wave patterns than rectangular rooms. Listening position affects which standing waves are most noticeable.
• Resonant Surfaces and Objects: Surfaces and objects in your room can vibrate in sync with the music, potentially adding unwanted ringing or boominess.
• Resonant Cavities: Small alcoves or closets can act as chambers, creating their own "one-note" sounds.

Solid Footing

For improved bass tightness and stability, consider using ETC™ (Energy Transfer Coupler) Spikes. These spikes firmly plant the subwoofer on the floor. It is advisable to finalize placement before installing spikes, as they can damage floors if the subwoofer is moved.

Spike Installation Instructions:

1. Lay the subwoofer on its side to access the feet.
2. Firmly press the spikes into the feet.

Caution: Keep hands and cabling clear of spikes. Do not slide the subwoofer, as spikes are sharp and can damage floors or carpet.

Diagram Description (Figure 11): Shows spikes being pressed into the feet of the subwoofer.

Frequently Asked Questions

• Cleaning: Use a dust-free cloth or soft brush. A specialty cloth is recommended.
• Placing Objects: While the surface is durable, avoid placing objects, especially liquid containers, on the subwoofer.
• Interaction with TV: The subwoofer uses unshielded drivers. Maintain 3 feet distance from video components susceptible to magnetic fields. Plasma, LCD, and LED TVs are generally not susceptible.
• Interaction with Other Devices: Wireless operation may be susceptible to RF interference from devices like microwave ovens, WiFi, etc. Separation of at least two feet usually resolves intermittent sound or popping noises.
• Power Consumption: When set to 'Auto On', the subwoofer draws approximately 15 watts when idle and 1 watt in standby mode. It will not significantly increase electricity bills.
• Thunderstorms: It is recommended to unplug the subwoofer (and all audio/video components) during thunderstorms.

Troubleshooting

• No Output: Check system power, master power switch ('Auto On'), wires and connections, level control, and fuse. Replace fuse if blown. Contact dealer if problem persists.
• Muddy Bass: Adjust placement (closer to walls), try ETC spikes, decrease level, or check processor setup. Contact dealer if problem persists.
• Hums or Unusual Sounds: Turn off inputs, then turn subwoofer back on. If hum disappears, the source is elsewhere in the system. Connect subwoofer to the same circuit as the pre-amp. If using wireless, move subwoofer away from interfering devices. Contact dealer if problem persists.
• Intermittent Output With Wireless: Ensure no other wireless devices are within 2 feet of the SWT-2 transmitter. Position transmitter at least 1 foot off the ground. Move transmitter and sub closer together. Remove barriers. Contact dealer if problem persists.

Dynamo 1000W Specifications

• System Frequency Response: 22-200 Hz ± 3 dB (Anechoic in LFE mode)
• Low Pass Filter Frequencies: 35Hz-120Hz
• Low Pass Filter Switch: Bypass (LFE In), Variable (L&R In)
• Phase: 0°, 90°, 180°
• Components: 12" (30.5cm) high-excursion polypropylene cone with extended throw driver assembly; sealed non-resonant cabinet.
• Amplifier: 500 watts RMS (1000 watts peak)
• Impedance: Left & Right/LFE RCA – 20,000 Ohms
• Inputs: Left & Right/LFE RCA Line Level
• Weight: 34 lbs. each (15.4 kg)
• Mains Power Draw: Standby: 1W, Idle: 15W, Max: 650W
• Size (Front-Firing Orientation): 13.69" W x 14.35" D x 15.46" H (34.8cm W x 36.4cm D x 39.3cm H)
• Size (Down-Firing Orientation): 13.69" W x 14.59" D x 14.54" H (34.8cm W x 37.1cm D x 36.93cm H)

Dynamo 700W Specifications

• System Frequency Response: 24-200 Hz ± 3 dB (Anechoic in LFE mode)
• Low Pass Filter Frequencies: 35Hz-120Hz
• Low Pass Filter Switch: Bypass (LFE In), Variable (L&R In)
• Phase: 0°, 90°, 180°
• Components: 10" (25.4cm) high-excursion polypropylene cone with extended throw driver assembly; sealed non-resonant cabinet.
• Amplifier: 300 watts RMS (600 watts peak)
• Impedance: Left & Right/LFE RCA – 20,000 Ohms
• Inputs: Left & Right/LFE RCA Line Level
• Weight: 26.5 lbs. each (12 kg)
• Mains Power Draw: Standby: 1W, Idle: 15W, Max: 400W
• Size (Front-Firing Orientation): 11.69" W x 12.31" D x 13.47" H (29.7cm W x 31.3cm D x 34.2cm H)
• Size (Down-Firing Orientation): 11.69" W x 12.53" D x 12.54" H (29.7cm W x 31.8cm D x 31.9cm H)

Warranty and Registration

The Dynamo subwoofer comes with a Limited 90 Day Warranty. A Limited 3-Year Warranty is available at no extra charge by completing and returning the Certificate of Registration and a copy of the dealer receipt to MartinLogan within 30 days of purchase. Online registration is also available at www.martinlogan.com. MartinLogan may not honor warranty claims without a completed registration. If a registration certificate was not received, contact your dealer.

Service

If using the product in a country other than the original purchase country, note the following:

1. The appointed MartinLogan distributor for a country is responsible for warranty servicing only for units distributed in that country.
2. For repairs in a different country, the end user may seek service from the nearest MartinLogan distributor, subject to local policies. All costs (parts, labor, transport) are borne by the owner.
3. Warranty may be transferable if relocating to another country after six months of ownership. Contact MartinLogan for details.

SWT-2 Dimensional Drawings

Diagram Description: Orthographic views (front, side, top) of the SWT-2 transmitter are shown with dimensions labeled in inches and centimeters: Height approx. 3.64" (9.3cm), Width approx. 3.66" (9.3cm), Depth approx. 3.41" (8.7cm), Thickness approx. 1.23" (3.1cm).

Dynamo 1000W Dimensional Drawings

Diagram Description: Multiple views (front, side, top, rear) of the Dynamo 1000W subwoofer are provided with dimensions. Key dimensions include: Height approx. 15.46" (39.3cm) (front-firing) or 14.54" (36.9cm) (down-firing), Width approx. 13.69" (34.8cm), Depth approx. 14.35" (36.4cm) (front-firing) or 14.59" (37.1cm) (down-firing).

Dynamo 700W Dimensional Drawings

Diagram Description: Multiple views (front, side, top, rear) of the Dynamo 700W subwoofer are provided with dimensions. Key dimensions include: Height approx. 13.47" (34.2cm) (front-firing) or 12.54" (31.9cm) (down-firing), Width approx. 11.69" (29.7cm), Depth approx. 12.31" (31.3cm) (front-firing) or 12.53" (31.8cm) (down-firing).