User Manual 100 Watt Subwoofer Plate Amplifier
Contents
1. DAYTON AUDIO 100 Watt Subwoofer Plate Amplifier LOW LEVEL PWR PRT AUTO PHASE GAIN O FREQ ON OFF REV NOR INPUT OUTPUT MIN MAX 40Hz 180Hz HI LEVEL IN OUT FROM AMPLIFIER TO SPEAKERS GOOO OOO CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE 3AL 250V 420VAC COVER OR BACK NO USER SERVICEABLE PARTS INSIDE RISK OF FIRE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL REPLACE FUSE 210 WATTS AS MARKED 60Hz WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR NOT SUITABLE FOR IN WALL MOUNTING MADE IN CHINA Model SA100 User Manual daytonaudio com Thank you for purchasing the SA100 Subwoofer Plate Amplifier It has been designed and built to provide years of high quality sound reproduction and is ideal for use in compact subwoofers for home stereo home theatre and multimedia audio systems Engineering features of this amplifier include a choice of high or low level audio connections select able crossover frequency auto on off circuit activated by input signal and comprehensive internal production against shorted speaker loads thermal faults and overload conditions FEATURES e Line level and speaker level inputs for connection to any audio system e Full complement of protection circuits for high reliability e Variable frequency 4th order low pass crossover fo2. H Power Requirements 120 VAC 60 Hz 210W Weight 7 6 Ibs Important Safety Instructions Read these instructions All the safety and operating instructions should be read before this product is operated Keep these instructions The safety and operating instructions should be retained for future reference To reduce the risk of electric shock do not remove cover No user serviceable parts inside The unit should be connected to an earth grounded AC electri cal socket Do not defeat the safety purpose of the polarized or grounding plug If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet Refer servicing to qualified personnel To reduce the risk of fire and shock do not expose unit to rain or moisture Clean only with dry cloth Unplug the unit during lightning storms or when unused for long periods of time The unit should be operated in a well ventilated area Minimum clearance is 2 inches from the ventilation openings Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Protect the power cord from being walked on or pinched par ticularly at the plugs convenience receptacles and at the point where they exit the unit Only use attachments accessories specified by the manufacturer CAUTION RISK OF ELECTRICAL SHOCK DO NOT OPEN WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC E
3. instructions and service fee charges Dayton Audio Last Revised 5 24 2013
4. DICATORS 7 Gain Knob Gain This control will match the amplifier s input sensitivity to the output of the pre amp source If the source output has a variable control we recommend that the user spend a moment or two determining the best balance between the two controls When a balance is found between low noise linear level control and sufficient level to drive the amp to the required output the gain knob can be considered to be the volume control for the subwoofer system 8 Frequency Knob Freq This control is used to establish the highest frequency that the subwoofer will reproduce and has a range between 60 to 180 Hz with a slope of 24 dB per octave If you are using the system for music and your main speakers have good bass capability you could set the control to a fairly low value often between 60 and 100 Hz If the main speakers are smaller or do not have much bass output set the control higher Experiment with the amount of overlap that you will experience when all speakers are play ing in the same range This can be helpful when integrating the subwoofer with the rest of the system and with the room Note When using the amp with a LFE Low Frequency Effects output on a pre amp or home theatre receiver the internal low pass filter circuitry should be bypassed by turning the frequency control to maximum 180Hz The home theater receiver should be used to control the low pass crossover frequency 9 Power
5. LECTRIQUE NE PAS OUVRIR Note Unit is set at the factory for 115V operation Unit may not be adjusted or modified for 230V operation Warranty Information Dayton Audio products are constructed by industry experts and are thoroughly tested before shipment Dayton Audio products are warranted for the period of one year This warranty is limited to manufacturer defects either in materials or workmanship Dayton Audio is not responsible for any consequential on inconsequential damage to any other unit or component or the cost for installation or extraction of any component of the audio system In the rare case of a product failure please contact your place of purchase or call our Customer Support Department at 937 743 8248 Warranty Limitations There are no other warranties either express or implied which extend the foregoing and there are no warranties of merchantability or fitness for any particular purpose The warranty will not cover incidental or consequential damage due to defective or improper use of products This includes but is not limited to burnt voice coils overheating bent frames holes in the cone or broken lead wires This warranty gives you specific legal rights and you may also have other rights which vary from state to state Non Warranty Service If non warranty service is required the product may be sent to the Company for repair replacement transportation prepaid by calling 937 743 8248 for details complete
6. LED When the power switch is moved to the on position the LED will illuminate green and the amp will be in On mode When set in the Auto position the unit will be in the stand by mode In this position if a low level signal of about 10 millivolts or greater is applied to the input the light will change green to indicate that the amplifier is fully operational and receiving typical music pro gram If an input signal is not detected for 10 to 15 minutes the amp will go back to stand by mode and the LED will turn off If the protection circuit detects a short circuit or thermal overload the unit will shut down and the LED will turn red 10 Power Switch On Off and Auto mode When the Auto position is selected the amp is in stand by mode until an input signal of about 10 mil livolts or greater is detected The amp will go back to standby mode 10 15 minutes after the input signal stops 11 Phase This two position NOR 0 phase and REV 180 phase switch helps to compensate for differences in the acoustical and electrical characteristics between the subwoofer and the main system speakers The relative locations of speakers in the system can cause significant disturbances in speaker interaction due to time delay issues or the destructive phase interferences that can occur at certain frequencies The use of this switch in conjunction with altering the location of the subwoofer can dramatically improve system i
7. ntegration The NOR setting would be considered the normal or default setting but be sure to experiment dur ing system set up 3 NOTES ABOUT HUM While the SA100 has been designed to minimize the possibility of hum in the subwoofer system it is still possible that a hum will occur in rare circumstances Its safety grounding can create a path for small amounts of 60 Hz energy to travel through the line level audio system While not dangerous this energy can cause difficulty with the subwoofer auto signal sensing circuit and at the very least will interfere with the quiet enjoyment of your system The first course of action should be trying to make sure that all of the audio components are connected to either the same electrical outlet or at least into the same circuit branch Next cable TV systems are notoriously the culprit so be sure to try disconnecting all coaxial feeds that are connected to the system If this solves the problem install a coaxial line isolator and reconnect the system In the very worst case a line level audio isolator transformer connected to the line in of the subwoofer amplifier will usually solve the problem SPECIFICATIONS Rated Power Output 75 watts RMS into 8 ohms 0 1 THD 100 watts RMS into 4 ohms 0 2 THD Signal to Noise Ratio 90 dB A weighted Input Impedance 10 4K ohms Low Pass Adjustment 40 Hz 180 Hz Dimensions 7 1 2 W x 8 11 16 H x 4 3 4 D Enclosure Cutout 6 1 2 W x 7 3 4
8. r a clean transition to main speakers e Robust fully discrete Class AB topology e Auto on feature conserves power when no signal is present e Phase reversal feature 0 180 degrees assists room placement TTE Autor PHASE GAIN REV NOR INPUT OUTPUT 40Hz 180Hz 4 HI LEVEL IN OUT FROM AMPLIFIER TO SPEAKERS e Sane A CAUTION Ji REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE 3AL 250V 120VAC COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ee 210 WATTS CAUTIO AS MARKED 60Hz RISK OF ELECTRICAL SHOCK O NOT OPEN Ee WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR NOT SUITABLE FOR IN WALL MOUNTING MADE IN CHINA INPUT OUTPUT CONNECTIONS 1 Low Level Inputs Left Right RCA style jacks that will accept standard line level inputs from a pre amp level source They will accept a stereo signal and inter nally combine it into mono Note Both left and right input jacks must be connected to the source in order to drive the amplifier to full output 2 Low Level Outputs Left Right This output allows the low level input signal to be daisy chained to other amplifiers The low level input is simply passed through with no alteration EQ to the original signal 3 High Level Inputs Speaker level inputs using binding post type jacks to permit connection with banana plugs or bare wire Allows the use
9. r to connect the speaker level output of a full range amplifier to the input of the subwoofer amp using standard speaker wire A mono signal is derived from the stereo input which then feeds the subwoofer amplifier crossover input 4 High Level Outputs Speaker level passthrough outputs using spring clip type jacks to permit connection with bare wire Used to connect from the subwoofer amp to pass signal from the full range amp on to the main L R speakers Signal is only present on this output if the high level input is also used The signal to the L R speakers is shaped by an internal 6 dB octave 125 Hz high pass filter The impedance seen by the full range source amplifier will be that of the connected speakers only 5 Power input This unit features a hardwired AC power cable and externally accessible fuse It is supplied with a 3AL 250V fuse and USA type polarized 2 pin plug This unit is not suitable for 230V applications 6 Output Lead for Subwoofer Driver This rear mounted output lead connects the amplifier to the subwoofer driver The output lead is roughly 18 long and is color coded The red wire uses an insulated 250 quick disconnect and the black wire uses an insulated 205 quick disconnect These connectors can be easily removed if your driver requires another size or type of connector Be sure to observe proper polarity when connecting the amplifier to your subwoofer driver red positive black negative CONTROLS IN
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