Owners Manual Sub 250
Contents Contents Introduction ................................................................................................................ 1 Safety .............................................................................................................................. 2 Important Safety Instructions ..................................................................................... 2 Before operation ..............................................................................................
Introduction Introduction Dear Music Lover, Thank you for purchasing this Dynaudio subwoofer. With it, you have chosen for the latest in audio technology and engineering, culminating into the finest in audio reproduction. Dynaudio is one of the very few companies who can realize such loudspeaker concepts through it's own in-house development and production facilities.
SAFETY Safety Important Safety Instructions 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 2 Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
Important Safety Instructions 15. WARNING: To reduce the risk of fire or electric shock, this apparatus should not be exposed to rain or moisture and objects filled with liquids, such as vases, should not be placed on this apparatus. 16. To completely disconnect this equipment from the mains, disconnect the power supply cord plug from the receptacle. The mains plug of the power supply cord shall remain readily operable. WARNING Risk of Electric Shock. Do Not Open.
BEFORE OPERATION About this operating manual Before operation Used signs and symbols In this operating manual following signs and symbols are used. Safety signs General safety sign The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
About this operating manual Text markings Note Additional information is provided, which is important to fully understand the Sub 250 and how to operate it. The arrow will identify steps to be performed. Please follow the instructions carefully. 1. 2. 3. Multiple steps that should be performed consecutively are numbered. Please follow these instructions carefully. italics The result of a step is printed in italics. This may help you verify the success of a step.
BEFORE OPERATION Unpacking To find the suitable position for the Sub 250 in your listening room, please read the chapter “Positioning the subwoofer” on page 20. To unpack the subwoofer 1 2 3 6 1. Unpack the subwoofer on a clean, even and soft area; floor carpeting is very suitable. 2. The packaging should be opened from the top. Remove all accessories that come packed with the subwoofer (such as AC power cord and grille). Do not remove the top part of the protective material. 3.
Unpacking Grille The subwoofer can be operated without the grille. However, it is recommended that the grille is mounted during normal use to help prevent accidental damage or dirt settling on the cone of the loudspeaker. With subwoofers, the influence of the grille on the sound is virtually negligible. To remove the grille: Gently pull the grille at all corners. To fit the grille: Line up the studs with the corresponding front baffle holes. Gently push the grille in at all corners.
BEFORE OPERATION Controls and connections ➊ POWER ON/OFF Main power switch (to switch the subwoofer manually on and off). LED: shows operation mode: • red = subwoofer switched on and in standby mode • green = subwoofer is activated ➊ ➋ AC IN Main power input. ➌ GAIN Subwoofer volume level. ➋ ➍ SUB Lowpass Subwoofer lowpass frequency: continuously variable from 50 to 150 Hz. ➎ PHASE Phase setting: phase can be set to 0° or 180°. ➌ ➍ ➏ MODE Subwoofer operation mode LFE or Slave.
Controls and connections ➐ ➑ ➒ ➓ ➐ SUB I/O • LFE/Slave in: input for LFE signal from processor/receiver. Note that the signal must be a true LFE signal or already have been filtered by the processor/receiver, as SUB Lowpass does not have an effect in combination with the LFE input. • LFE/to Slave: output to next subwoofer if installed. ➑ SAT/SUB Input Input for full bandwidth signal from processor/receiver.
OPERATION Connecting the subwoofer Operation NOTICE Damage of device due to improper connection Set the mains power switch to OFF before connecting the Sub 250. Only switch the subwoofer on (mains power switch to ON) after all connections and set up steps have been properly completed. Note: The Dynaudio Sub 250 can be controlled by any source provided with a LFE or preamplifier output. In the operating manual the expression “processor/receiver” will be used for all these sources.
Connecting the subwoofer Subwoofer inputs SUB I/O LFE/Slave In SAT/SUB Input The Dynaudio Sub 250 provides two different signal inputs: SUB I/O - LFE/Slave In + SUB Lowpass MODE LFE SAT Highpass + Slave This input allows the LFE (Low Frequency Effect) channel to be connected, which is used in Home Cinema systems to reproduce low frequency effects. The signal is: • reproduced by the subwoofer • routed to the SUB I/O - LFE/To Slave output for a second subwoofer to be connected.
OPERATION Connecting a single subwoofer ➊ To connect the SAT/SUB input: Front Out/ Pre Out ➊ ➋ LFE/SUB Out From the preamplifier output of your processor/receiver, PC or media player (often marked as Pre Out or Front Out) connect a stereo RCA cable to the subwoofer SAT/ SUB Input. This signal should not be already processed by the processor/receiver. Please pay attention to the settings of your processor/receiver.
Connecting the subwoofer Multiple subwoofer connections The Dynaudio Sub 250 can be used stand-alone or together with multiple subwoofer units. Using multiple units may be helpful if the listening room is quite large or has difficult acoustic conditions (e.g. room-modes, see also “Positioning the subwoofer” on page 20 for further information). When using two or more subwoofers, the first one (designated “Master”) controls the following subs (designated “Slave”) via a subwoofer cable. LFE/SUB Out Sub...
OPERATION Connecting loudspeakers Front Out/ Pre Out LFE/SUB Out In Home Cinema systems the bass management - meaning the distribution of the low frequencies to the subwoofer and the speakers - is handled by the settings of the processor/receiver. If your equipment does not provide bass management, or if you want to use the Sub 250 together with a common stereo, the low frequency adjustment of the connected speakers can be managed by the Sub 250.
Switching the subwoofer on/off (POWER ON/OFF) Switching the subwoofer on/off (POWER ON/OFF) Once you have ensured yourself that all necessary connections have been made, the subwoofer and the connected components can be switched on. Switch the subwoofer ON with the main POWER switch on the rear panel. The status LED on the rear of the subwoofer will light up red.
OPERATION Adjusting the volume (GAIN) CAUTION High Sound Levels To avoid auditory defects do not listen to high sound levels over a longer period of time. The correct volume setting is an important aspect in achieving a well balanced speaker combination. Please also refer to “Specific tips” on page 28 for further information or ask your local Dynaudio dealer for assistance. Adjust the GAIN control, until correct setting is reached. Note: You can not adjust the volume, when subwoofer is in slave mode.
Selecting the subwoofer cut-off frequency (SUB Lowpass) Selecting the subwoofer cut-off frequency (SUB Lowpass) The SUB Lowpass control allows the frequency range of the subwoofer to be defined. Above the selected frequency the sound level decreases rapidly. The correct setting of this cut-off frequency is important for a well balanced combination of subwoofer and speakers. To select the cut-off frequency: Set the SUB Lowpass control to the desired frequency between 50 and 150 Hz.
OPERATION Setting the phase (PHASE) Level Combined frequency response Subwoofer Main speakers Frequency With the phase settings you can adjust the timing relationship between the subwoofer and main speakers. If either subwoofer or main speaker are slightly delayed in response in relation to the other, it can result in decreased bass output in the frequency response area where they overlap each other.
Setting the satellite cut-off frequency (SAT Highpass) Setting the satellite cut-off frequency (SAT Highpass) Depending on the bass capabilities of the speakers, the frequency range of subwoofer and speakers can overlap between 50 Hz and 150 Hz. A bump or a gap in the frequency response and thus a lower sound quality will be experienced if the system is not matched properly.
OPERATION Positioning the subwoofer Although it is often said that the location of a subwoofer in a listening room is not critical (as the human ear can not locate direction at very low frequencies), we recommend that you choose its position carefully. Thus the subwoofer can integrate seamlessly with the other speakers in the system and interact correctly with the room acoustics.
Positioning the subwoofer Impact of room-modes 1/4 1/2 3/4 1/4 Listening Room 1/2 3/4 Owners Manual Every listening environment will have specific “room-modes”, whereby in some specific locations in the room and at particular frequencies, the bass may be too much or too lean. This effect will be stronger in square and “shoe-box” shaped rooms.
OPERATION Positioning possibilities Moving the subwoofer closer to walls and corners in particular will generally increase the amount of bass. Although the extra amount of bass can be compensated for by reducing the volume level of the subwoofer relative to the rest of the system, this can result in uneven bass response at the listening position. You can try starting with placement in a corner and experiment by gradually moving it out of the corner or further away from the wall.
Positioning the subwoofer Free standing, away from wall and corner This position will give least boost compared to wall or corner placement, but in general offers the best flexibility at achieving most even bass distribution at the listening position. Avoid placing the subwoofer exactly half-way or at a quarter’s length of either sidewall. Particularly in smaller square or “shoe-box” shaped rooms the free standing position is recommended.
OPTIMIZING SETTINGS/TROUBLESHOOTING Optimizing settings/Troubleshooting Check it out General tips Try different subwoofer positions and settings, before you finally choose a setup. Note down settings When looking for the best subwoofer position in the room, note down the ideal setting you found for a position. When moving the subwoofer between two positions you will be able to set the subwoofer to the same configuration as found before.
Cut-off frequencies Note: When using multiple subwoofers, ensure that all settings such as level, cut-off frequency, phase and LF extension are identical. Use the LFE and Slave mode options to ensure that all subwoofers operate on the same settings (refer to chapter “Multiple subwoofer connections” on page 13). Cut-off frequencies Matching the frequency responses of subwoofer and speakers has an important impact on the overall sound quality, when integrating a subwoofer into a audio-video-system.
OPTIMIZING SETTINGS/TROUBLESHOOTING Subwoofer too low, main speakers too high Level Combined frequency response Subwoofer Main speakers A gap in the frequency response occurs, if the cut-off frequency of the subwoofer is set too low and of the main speakers too high (or if the main speakers are not able to reproduce low frequencies accordingly). In this acoustic hole you will miss some signal information and experience a thin bass sound.
Cut-off frequencies Control possibilities The Dynaudio Sub 250 provides two controls to match the frequency response of the subwoofer and the main speakers perfectly: • SUB Lowpass: The upper cut-off frequency of the subwoofer, which can be continuously adjusted between 50 and 150 Hz. Above the selected cut-off frequency the sound pressure level decreases rapidly. • SAT Highpass: The lower cut-off frequency of the main speakers; 60 Hz, 80 Hz or Flat (neutral) can be selected.
OPTIMIZING SETTINGS/TROUBLESHOOTING Specific tips Many processors/receivers provide extensive bass management capabilities to set the cut-off frequencies for both subwoofer and speakers. If using the bass management of the processor/receiver, set the controls of the Sub 250 as followed: • SUB Lowpass = 150 Hz (at the very right) • SAT Highpass = Flat Damage of Small Satellite Speakers CAUTION Selecting the correct frequency depends to a large extend on the main speakers.
Cut-off frequencies Speaker/amplifier Medium sized speaker, powerful amplifier Medium sized speaker, weaker amplifier Small speaker, powerful amplifier Small speaker, weaker amplifier Very small speaker (Mini-satellites) Owners Manual Recommended first setting SUB Lowpass SAT Highpass If you experience this problem after first setting...
OPTIMIZING SETTINGS/TROUBLESHOOTING Troubleshooting There may be various reasons why the subwoofer doesn’t function properly in a system without it being faulty. The checklist below will help solve problems you may encounter. Before consulting your Dynaudio dealer, check this list first. Check this first: Check if all signal cables are connected properly. Check settings in bass management menu of the connected processor/receiver.
Troubleshooting Problem Cause Solution The subwoofer switches itself off although music is being played. There is hardly any low-frequency signal available. This can happen if the music or movie itself does not contain very low frequencies (e.g. long dialogues). The subwoofer will switch on automatically as soon as low frequent signals are detected. The subwoofer will not switch on at all. • AC mains cable has become disconnected (LED does not lit).
CARE AND MAINTENANCE/WARRANTY Care and Maintenance/Warranty Care and Maintenance Components of the highest quality are used in your Sub 250. This assures years of trouble free operation. Following precautions should still be made though. Cleaning the cabinet NOTICE Damage of drive units Touching the drive units may damage them. Do not touch the drive units by hand when cleaning the cabinet. To clean the cabinet: Use a moistened cloth or a mild detergent. Do not use aggressive cleaning solutions.
Warranty To change the fuse: 1. Switch off the mains power switch and unplug the power cable. 2. Pull out the fuse holder 3. Replace fuse with same type and rating 4. Push fuse holder back firmly until it is locked in its position. Recycling used products This product is subjected to the European Union Waste Electrical and Electronic Equipment directive (WEEE), 2002/96/EC.
TECHNICAL INFORMATION Technical Information Parameter System Bass principle Frequency response Inputs • SUB I/O: LFE/Slave In • SAT/SUB Input Input impedance • LFE/Slave In • SAT/SUB Input Outputs • SUB I/O: LFE/To Slave • SAT Output Output impedance • LFE/To Slave • SAT Output Mode selector Phase adjustment Specifications Sub 250 Sub 250 MC Sub 250 SAT active subwoofer closed 29 Hz to 250 Hz (± 3 dB) RCA right/left full bandwidth, RCA 10 kat 1 kHz > 8 kat 1 kHz RCA right/left, highpass filtered, R
Specifications Parameter Amplifier power Sub 250 Sub 250 MC Sub 250 SAT Sub 250 Compact 200 W, 4 140 W, 4 200 W, 4 200 W, 4 Power consumption • On (Automatic Mode) • max. Woofer • Cone • Coil Dimensions, external (W x H x D, incl. feet and grille) 14 W 325 W Ø 240 mm / 10", one piece molded MSP (Magnesium Silicate Polymer) cone Ø 100 mm / 4, pure aluminium voice coil 289 x 294 x 318 mm 11.38" x 11.58" x 12.52" 266 x 271 x 286 mm 10.47" x 10.67" x 11.26" Cabinet volume 16.4 l 13.
All there is. Dynaudio A/S, 8660 Skanderborg, Denmark Sales & Marketing: Dynaudio International GmbH, Ohepark 2, 21224 Rosengarten, Germany, Phone: +49 4108 - 41 80 - 0 www.dynaudio.com © Dynaudio International GmbH, Sub 250 Owners Manual 0112, Item No. 455472B. All text and image copyrights reserved. Subject to change without notice.
