Digital Drive SMS™- 1 ® Subwoofer Management System USER’S MANUAL F e a t u r i n g S o f t w a r e Ve r s i o n 2 .
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Ta b l e o f C o n t e n t s Congratulations ...................................................................................................1 Before you Begin .................................................................................................1 Package Contents ................................................................................................2 Product Features and Controls ..............................................................................2 - SMS-1 .................
Congratulations Congratulations on your purchase of a Velodyne Digital Drive SMS-1 Subwoofer Management System! This system enables you to bring the power of Velodyne’s patent-pending Digital Drive bass management to any subwoofer. Digital Drive technology, universally acknowledged as the state-of-the-art in bass reproduction, is the result of years of research and development, combining advanced Digital Signal Processing (DSP), software, equalizer, and audio filter technologies.
Pa c k a g e C o n t e n t s Your Velodyne Digital Drive SMS-1 consists of the following components: • • • • Digital Drive SMS-1 Power Supply with Cord Remote control Digital Drive Accessory Kit CAUTION: Many of the accessories are embedded in the included foam endcaps. Please do not discard.
Remote Control The Velodyne Digital Drive infrared remote control allows you to set up, adjust, and reset your SMS-1 when connected to a television or a video monitor. You will also use your remote to activate preset listening values, set the SMS-1’s volume up or down, mute the SMS-1, or set a night operational mode. Take care not to lose or misplace your remote control as adjustments to the SMS-1 (with the exception of volume control) can only be done using the remote. NOTE: Two 1.
Remote Control Buttons A brief description of each button on the remote control follows: • PWR – Causes the SMS-1 to stand by. • NUMERIC KEYPAD – Used to enter an unlock code to enter SETUP mode, and for other functions. • SET (+/-) – Increases or decreases the Q value for a parametric EQ, or sets values on the SYSTEM SETTINGS page. • LIGHT – Turns the SMS-1’s LCD light on or off. • NIGHT – Limits the peak output of the SMS-1, and illuminates the NIGHT indicator on the LCD screen.
Digital Drive Accessory Kit The Velodyne Digital Drive Accessory Kit contains the following six components: • • • • • • • Calibrated precision microphone Microphone windscreen cover Tabletop microphone stand Microphone stand adapter 6 foot audio cable 6 foot video cable 20-foot XLR microphone cable I n s ta l l a t i o n O v e r v i e w Your new Velodyne SMS-1 provides for a number of installation options.
Figure 2: Digital Drive Front and Rear Panel Connections . (1) POWER – Press the POWER switch to the ON position to activate the SMS-1. If the unit is to be left unused for an extended period of time, press the switch to the OFF position to prolong the life of the SMS-1. (2) IR Remote Sensor. (3) LCD Display – This display shows subwoofer volume, preset, and indicates auto-EQ, self- EQ, mute, and night mode operation. (4) MIC INPUT – This XLR input jack is for the XLR microphone cable.
. (10) RS-232 OUT – Use this port to communicate with a second “daisy-chained” Digital Drive SMS-1. (11) RS-232 IN – Use this port to communicate with your computer (for software updates), a touch panel remote control, or another upstream Digital Drive SMS-1. See Appendix A for an explanation of the use of the serial port, available commands, and their formats. (12) EQ Video Output – Used to display the video generated by the SMS-1. S-Video or composite connections are available.
I n s ta l l a t i o n – Q u i c k S ta r t To quickly set up and take advantage of the auto-EQ feature in your new Digital Drive SMS-1, perform the following steps: 1. Unpack the SMS-1 and connect the power cable. 2. Connect an LFE input cable from your receiver/processor to the input jack. For other hookup options, see step 2 on page 9. 3. Connect a high quality line level cable from one of the LFE out jacks to your subwoofer. 4.
I n s ta l l a t i o n – S t e p - B y - S t e p To ensure a quick and flawless installation of your Velodyne Digital Drive SMS-1, follow these setup instructions. SMS-1 Cable Connections Make all necessary cable connections between the applicable SMS-1 connector port and your particular home electronics equipment in the following order: 1. Insert the detachable power supply into the power interface port on the rear panel of your SMS-1. Plug the male end of the cord into a convenient wall outlet. 2.
4. Connect the audio/video cables between your SMS-1 (EQ OUTPUT VIDEO/LEFT/RIGHT – yellow, white, and red respectively) and your electronics (receiver, processor, TV, etc.). Insert the color-coded cable plugs into the correct EQ OUTPUT receptacle – the yellow plug into the VIDEO jack, the white plug into the LEFT jack, and the red plug into the RIGHT jack. The opposite ends of the cables should be connected to your receiver/processor. The yellow VIDEO cable goes to an available composite video input (e.g.
Choose one SMS-1 for all the connections described below (we’ll call this the “master”), and then connect an RCA jack from the THRU RCA jacks of the “primary” to the Input jacks of the “slave.” You will also need to obtain a “Mouse Extension” serial cable (available at any computer store, from your Authorized Velodyne dealer, or from Velodyne directly) and connect the RS232 OUT port of the primary SMS-1 to the RS-232 IN port of the secondary SMS-1.
SMS-1 Setup – Ov ervie w BEFORE YOU BEGIN: Once the installation has been completed, note that you can use your SMS1 without performing ANY of the setup steps below. Simply use the remote to set the volume, and select the preset that most closely matches your listening material, and enjoy! However, to reap the maximum benefits of Digital Drive technology, read on! Special note for 230V users with video problems For 230-volt Digital Drive SMS-1 users, the default video mode is NTSC video format.
NOTE: Velodyne is not responsible for damage caused to subwoofers as a result of normal use and setup of the SMS-1. Following is an overview of the screens you will be using to set up your Velodyne Digital Drive SMS-1. Figure 3: Introductory Screen See Figure 3. This the Introductory screen. Notice that as you change settings (such as preset, volume, etc.) they are shown on this screen. You enter setup mode by pressing MENU and entering the code 12345.
Figure 4: EQ Setup screen The EQ Setup screen includes a “SYSTEM RESPONSE” “sweep” window and a graphic equalizer. You use these settings to equalize your room. The graphic equalizer features 8 bands, each of which can be used at its current frequency, or can be infinitely adjusted to the frequency and Q you desire. Each preset can have its own EQ settings. . www.velodyne.
By navigating the cursor to the NEXT field and pressing SELECT, the following screen appears: Figure 5: SYSTEM SETTINGS Screen From this screen the crossover, subsonic filter, phase, polarity, volume, and other settings can be set, as well as specifics for each preset, if desired. Your SMS-1 comes with 6 presets, four of which are preprogrammed at the factory. The Setup setting is used to initially set the crossovers, slopes, phase, polarity, and volume for all presets.
All six presets contain the following fields: • Low Pass Crossover Frequency and Slope – Adjust the upper limit of your SMS-1’s frequency response. Select a crossover setting, in increments of 1, between 15 Hz and 199 Hz (or OFF) and slope at 6, 12, 18, 24, 30, 36, 42 and 48 dB/octave. • Subsonic Filter Frequency and Slope – Set your SMS-1’s subsonic filter (low frequency limit), in increments of 1, between 15 Hz – 35 Hz and slope at 6, 12, 18, 24, and 48 dB/octave.
Onscreen Progr amming and Setup– Step-by-Step The following steps take you though a typical SMS-1 setup procedure. 1. Push the POWER button on the SMS-1’s front panel to activate the unit. 2. Make sure your receiver/processor is on and the volume control is set to minimum. 3. If you haven’t already done so, establish the crossover settings for your main speakers. Generally, if your mains can be crossed over at 80 Hz (that is, accurately reproduce frequencies to this level) it is an ideal setting.
6. Press MENU and enter 12345 to enter the EQ setup screen, as follows: . www.velodyne.
Upon pressing 5, you should see the following screen: 7. Use the remote control to MUTE the SMS-1. . www.velodyne.
8. Raise the volume on your receiver/processor until the DD test sweep (a tone that sweeps from 20 Hz up to 200 Hz) can be heard from your system’s speakers. Continue to raise the volume until the “SYSTEM RESPONSE” graph on your TV shows the response of your full range speakers (the right hand portion of the graph) at approximately 86 dB (or a comfortable listening level). This is shown below: 9.
The screen should now look something like this: . www.velodyne.
About Room Placement Room placement is the first step in equalizing your subwoofer(s) to your main speakers and your room. Subwoofers operate at extremely low frequencies, which are primarily omni-directional (that is, you can’t usually tell where they are coming from). Placing the subwoofer(s) in the room is a trial and-error process which is greatly aided by the SMS-1. The goal is to find the best location(s) that result in the minimum number and severity of valleys in the frequency response curve.
TIP: Here’s an easy way to find the optimal position for your subwoofer without moving it to multiple positions in the room. Start by setting the subwoofer up in your listening position. Now, move the microphone around the room and observe the response graphs for different room positions. The best position has the fewest valleys and the overall smoothest response.
AND REMEMBER: Use the UP, DOWN, RIGHT and LEFT directional arrow buttons that surround SELECT to move through the fields of the setup screen, and change settings by using the SELECT button, then the UP and DOWN arrow keys. Or, you can skip the SELECT button and change values using the SET +/- buttons. 14.
TIP: To see immediate feedback on the effects of your changes to the “SYSTEM RESPONSE” graph, press the TEST button. The following screen appears: Press TEST again to return to the SYSTEM SETTINGS screen. NOTE: Some receivers/processors supply a signal that is already crossed over – i.e. just the bass frequencies. If this is the case, you will want to defeat the SMS-1’s low pass crossover. To defeat the low pass crossover, press the SELECT key, then the RESET key.
16. You should normally not need to adjust the subsonic filter. Do so only if there are anomalies in the very lowest frequencies that you cannot address using the normal EQ process as described below. 17. Next adjust the phase and polarity settings. Phase is in effect a short delay in the reproduction of the audio signal. The polarity reverses the phase (i.e. 180o shift). Adjusting phase can change the dynamics of standing waves and frequency cancellations in the room.
Continue this process until the “SYSTEM RESPONSE” graph shows a +/– 3 dB response across the bass frequencies (that is, up to about 120 Hz.). Note that this does not necessarily mean a “ruler flat” response; +/- 3dB is typical for an optimized response curve. An “equalized” room is shown below: . www.velodyne.
To have the unit EQ itself, select the auto EQ option, as shown: When this mode is selected, the unit automatically resets all EQs to their original frequencies, and Q settings (but retains any level changes you may have made). The AUTO EQ proceeds until you either save settings, press SELECT to return to manual EQ, move the cursor off the AUTO EQ field (in which case the field automatically reverts to MANUAL), or twenty five sweeps have occurred.
21. To use the parametric EQ feature, position the cursor over the EQ and press the SELECT button. The values for that particular EQ appear on the right hand side of the screen. The following screen is shown: . www.velodyne.
22. To manipulate a parametric EQ, you can now use the LEFT and RIGHT arrow keys to move the frequency up and down, and the SET + and SET – keys to change the Q value. Use the UP and DOWN arrow keys to adjust the level of the EQ as before.
You can change any value in the presets column, then use the TEST key to review the curve with these settings active. This is shown below. Features of each preset are: EQ. There can be a completely different set of EQs for each preset. Simply select the preset you want on the “SYSTEM RESPONSE” screen where indicated. Volume. This setting deviates the preset’s volume from the established system volume of the SMS-1.
EQ Curves. Each preset can have its own unique set of EQ settings. You can select which preset you want to EQ by either positioning the cursor on a preset column on the settings screen then pressing TEST, or by selecting the preset you want on the SYSTEM RESPONSE screen at the PRESET field, or by pressing one of the preset buttons on the remote.
2. Raise the volume of the SMS-1 after you have finished your room equalization and other settings. You can observe this difference by watching the “SYSTEM RESPONSE” graph as you raise the volume, or, 3. Raise the volume on your subwoofer. Of course, all hearing is different, so be sure to perform the above step “to taste.” 25. Your setup is complete! You are now ready to save settings.
R e s t o r i n g D e fa u l t s There is a feature in the SMS-1 that allows you to restore the factory defaults. On the main screen, simply press the 8, 9, and 0 buttons in sequence. After the sequence has been entered, the unit will flicker the video and then restore the main screen. The restoration of defaults is denoted on the main screen, as follows: . www.velodyne.
Runtime Mode During normal use of your Digital Drive SMS-1, you can use the preset buttons to invoke certain presets, use the volume control to raise or lower the SMS-1’s volume, use the light and night buttons to control the light and night mode, respectively, and use the mute button to mute the SMS-1.
1 2 V O LT T R I G G E R M O D E The following screens show the use of the 12 volt trigger mode. The following screen denotes how to activate the 12 volt trigger feature: . www.velodyne.
The following screen is shown when the unit is waiting for a 12 volt trigger to activate: . www.velodyne.
About Room Equalization This section gives some background on room equalization. As a subwoofer plays in a room, the reflections of the sound waves off the walls create “standing waves,” that is, places in the room where certain frequencies are louder and others are diminished. In addition to standing waves, every room will also have locations where cancellations of the sound waves are like black holes that no amount of attenuation can fill.
Appendix A: RS-232 Serial Overview and Commands Introduction This document outlines Velodyne’s Digital Drive (DD) RS-232 protocol specification. This protocol indicates how Digital Drive products receive run-time commands from devices such as Creston Universal Remote Controls.
RS232 Commands .
Appendix B: Summary of Special Remote Codes Following are special remote codes and their functions. Unless otherwise noted, the codes are active only on the cover page. . Function Code Description Self-EQ 3-2-1 Initiates Self-EQ feature. Be sure to connect the microphone before engaging. Press RESET to cancel prematurely. After 25 sweeps, the unit saves and resets. Restore defaults 8-9-0 Restores defaults and resets the SMS-1.
Other velodyne Products: Digital Drive Signature 1812 ™ HGS-X Series HGS-10X HGS-12X HGS-15X SPL-R Series SPL-800R SPL-1000R SPL-1200R DPS Series DPS-10 DPS-12 DLS-R Series DLS-3500R DLS-3750R DLS-4000R DLS-5000R VRP Series VRP-1000 VRP-1200 VX Series VX-10 LIMITED WARRANTY VELODYNE ACOUSTICS, Inc. (“VELODYNE”) warrants all powered subwoofers for a period of two years and full range speakers for a period of five years.
Velodyne Acoustics, Inc. 345 Digital Drive Morgan Hill, CA 95037 408.465.2800 voice 408.779.9227 fax 408.779.9208 service fax www.velodyne.com Service E-mail: service@velodyne.com Product E-mail: help@velodyne.com Technical E-mail: techhelp@velodyne.com . 63-SMS1 RevD 22AUG05 www.velodyne.
