300-807m no ETL.indd
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1. FUSE T8AL 250VAC FOR 115VAC 60HZ FUSE T4AL 250VAC FOR 230VAC 50HZ POWER CONSUMPTION 500W Date code O INPUT CONNECTIONS 1 Left Right inputs RCA style jacks that will accept standard line level inputs from a pre amp level source They will accept a stereo signal and internally combine it into mono Both left and right input jacks must be connected to the source in order to drive the amplifier to full output The use of a Y cord is suggested if a mono source is all that is available 2 LFE direct input RCA jack that will accept a signal from the mono LFE Low Frequency Effects output on a pre amp or receiver that is equipped with a dedicated sub bass output This input by passes the amplifiers own internal low pass filter circuitry relying instead on the processed output provided by the source equipment This would be the recommended connection for most home theatre surround sound receivers and pre amps We would also suggest the use of the LFE input when an external line level electronic crossover or frequency dividing network is used 3 Power input This unit features an IEC grounding type power input connec tor The IEC inlet connector also features an integrated fuse holder that contains the AC line fuse For 230V input remove the fuse holder rotate 180 degrees and re install most 230V applications a separate power cord will be required and is not included2. Signal to Noise Ratio Efficiency Input Impedance Low Pass Adjustment Phase Adjustment Parametric EQ Frequency Bandwidth Level Dimensions Enclosure Cutout Power Requirements Stand by Power Rating Weight SPECIFICATIONS 0 92 THD 273 Watts into 8 ohms 540 Watts into 4 ohms Based on one third power duty cycle 98 dB A weighted 75 12K ohms 30 Hz 200 Hz 0 NOR or 180 REV 18 Hz 80 Hz 0 1 1Q 14 5dB 6dB 11 15 16 W x 11 15 16 H x 5 1 4 D 10 x 10 115 230 VAC 50 Hz 60 Hz 115V 24W 230V 18 4W 15 2 Ibs Important Safety Instructions To reduce the risk of electric shock do not remove cover No user serviceable parts inside Refer servicing to qualified personnel To reduce the risk of fire and shock do not expose unit to rain or moisture The unit should be connected to an earth grounded AC electrical socket The unit should be operated in a well ventilated area Minimum clearance is 2 inches from the ventilation openings CAUTION RISK OF ELECTRICAL SHOCK DO NOT OPEN WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR Note Unit is set at the factory for 120V operation Be sure to change the fuse 5A rating before switching to 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
3. AYTON AUDIO High Performance Subwoofer Plate Amplifier SPA500 LOW PASS 5 ran W7 200 FREQ POWER FREQ ATA o EESE MIO U QD X CK he d LN Bas P i DS LEFT HIGHT LFE BANDWIDTH LEVEL DIRECT CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE CAUTION D T OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR NOT SUITABLE FOR IN WALL MOUNTING SERIAL NUMBER Date code HIGH PERFORMANCE SUBWOOFER AMPLIFIER A C MAINS FUSE T8AL 250VAC FOR 115VAC 60HZ FUSE T4AL 250VAC FOR 230VAC 50HZ POWER CONSUMPTION 500W Model SPA500 User Manual daytonaudio com Thank you for purchasing the Dayton Audio SPA500 subwoofer amplifier one of the most versatile and powerful sub woofer amplifiers available The SPA500 has the power to drive even the most power hungry subwoofer systems FEATURES Patented tracking downconverter power supply for Advanced soft clip circuitry improves headroom and high efficiency protects woofers Class AB output stage for clean controlled output Variab
4. CONTROLS INDICATORS 4 Low Pass Gain 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 deter mining 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 5 Low Pass Frequency This control is used to establish the highest frequency that the subwoofer will reproduce and has a range between 30 and 200 Hz If your main speakers have good bass capabil ity you could set the control to a fairly low value at 40 60 or even 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 playing in the same range This can be helpful when integrating the subwoofer with the rest of the system and with the room 6 Power Switch This switch manually turns the unit on and off When switched to the on position the unit will first turn on and be fully opera tional After a period of 10 15 minutes without a signal the unit will go into stand by mode 7 Power LED When the power switch is moved to the on position the LED will illuminate in green and the amp will be in stand by mode
5. If a low level signal of about 3 millivolts or greater is applied to the input the light will change color to yellow to indicate that the amplifier is fully operational and receiving 3 typical music program As input signal increases to the onset of clipping the LED will turn red which indicates that the clip limiting circuitry is activated 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 change back to green 8 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 have a dramatic effect on system integration The setting would be considered the normal or default setting but be sure to experiment during system set up PARAMETRIC EQUALIZER The SPA500 Amplifier features a fully parametric equalizer to help you to achieve the best possible subwoofer performance Professional sound engineers have for many years considered the parametric EQ to be one of the most accurate versatile and high fidelity tools for audio enh
6. ancement A greater degree of control can be achieved when using the EQ s unique ability to vary the frequency to be affected the amount of boost or cut and the width or narrowness at the selected frequency 9 EQ Frequency Establishes the specific frequency at which EQ boost or cut may be applied between 18 Hz and 80 Hz 10 EQ Bandwidth Determines how narrow or wide the EQ curve will be within a range of 0 1 to 1 0 If for example a frequency of 60 Hz were selected along with a Q of 0 1 the frequencies to either side of 60 Hz would be less affected This is a narrow bandwidth that could be useful for surgically removing an offending peak without disturbing adjacent frequencies At the other extreme a Q of 1 would result in a much broader effect which could be used for smooth overall bass boost or cut to balance the overall tone character of the sub 11 EQ Level Permits the application of up to 6dB of boost or 14 5dB of cut at the selected frequency and bandwidth Setting the control at the O position effectively removes the EQ from the circuit path It is good to remember that high levels of boost reduce amplifier headroom it is the same as turning up the low pass gain control but only at the selected EQ frequencies It would be helpful to reduce or increase the low pass gain control to balance the amount of cut or boost applied by the EQ 12 Output Lead for Subwoofer Driver This rear mounted output lead connects the ampl
7. ifier to the subwoofer driver The output lead is roughly 20 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 NOTES ABOUT HUM While the SPA500 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 trough 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 Rated Power Output
8. le low pass filter Low frequency parametric EQ allows you to boost or Switchable 115 230V input voltage cut to custom tailor the sound INSTALLATION The SPA500 is designed to provide high fidelity subwoofer amplification and is tailored for home audio home theater and studio environments It is not recommended for use in DJ pro sound or other high duty cycle applications The amplifier runs cool thanks to its high efficiency but care should be taken to leave some room for air circulation above and behind the amplifier SPASOO LOW PASS A Hz 5 105 Ach 2 zd 4 PHASE PS es E REV 39 oo E C No j NIT PPLE LOSE NE VO O M M LX Jak Jas NDI a A A o 10 30 200 A bad 91 3 Wess LEFT RIGHT LFE GAIN FREG POWER FREG BANDWIDTH LEVEL DIRECT HIGH PERFORMANCE CAUTION Mord pte SUBWOOFER AMPLIFIER REFER SERVICING TO QUALIFIED SERVICE PERSONNEL A NS WARNING a TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE CAUTION RISK OF ELECTRICAL SHOCK DO NOT OPEN WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR NOT SUITABLE FOR IN WALL MOUNTING
9. 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 com ponent 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 mer chantability 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 instructions and service fee charges SPA 10 2009 Dayton Audio
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