Phoenix Gold M 44 car audio amplifier Owners Manual
The Phoenix Gold M44 is a powerful car audio amplifier that can deliver up to 320 watts of total dynamic output power. It is designed for use with a variety of speaker systems, including subwoofers, and it features a built-in crossover network, bass EQ control, and thermal overload protection.
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eA ER ONS, OBE AIR ATINA ms a N x AT TABLE OF CONTENTS 4 TO lifer BEFORE YOU BEGIN YOUR INSTALLATION ..........eeree.emeveccco. 1 FEATURES AND SPECIFICATIONS cocoon, 2-3 CONTROLS AND FUNCTIONS... eee, 4-6 MOUNTING AND LOCATION ovine, 7 ELECTRICAL INSTALLATION ovine, 8 INTERNAL CROSSOVER ADJUSTMENTS... 9 AMPLIFIER BASS & GAIN ADJUSTMENTS.................emem.... 10-11 SYSTEM DESIGN oui EREKRRERER EEE KRRERK EEK REKEN 12 BASS AND YOUR VEHICLE ser EEE nnn nee 13 PHOENIX GOLD SYSTEM DESIGNS............c...eeeevevreiereees 14-17 System 1: 3 Channel System With Subwoofers.................. 14-15 System 2: 6 Channel System With Optional Sub Amplifier..160-17 CROSSOVER / COMPONENT VALUES .........reeeeervercorieneceo. 18-20 6 dB Per Octave High & Low Pass Filter Table..............c.......... 18 12 dB Per Octave High 8: Low Pass Filter Table ...................... 19 18 dB Per Octave High Pass Filter Table 20 PHOENIX FACTS oie eee 21 EC@PRINTed with soy-based ink é and recycled paper. 6) BEFORE YOU BEGIN YOUR INSTALLATION Thank you for choosing a Phoenix Gold product. In doing so you've demonstrated a desire to own the finest in audio reproduction. Phoenix Gold strives to provide you, the customer, with the finest products possible. Properly installed, your Phoenix Gold amplifier will provide years of high quality sonic reproduction. Before installing the M44 in your vehicle, please read the entire manual carefully. It is required reading for the protection of your vehicle and for the maximum performance of your car audio system. The M44 utilizes the fastest output devices in the industry. Where most manufacturers use 3 to 5 MHz output devices, Phoenix Gold utilizes 25 MHz high temperature devices. These devices are not only faster, but more costly... and much more reliable. At Phoenix Gold, we don't just use run-of- the-mill capacitors in our circuitry, but rather low ESL/ESR type capacitors. And we use them extensively in our amplifiers. This helps reduce one of the major failure modes of all car audio amplifiers - HEAT. The M44 amplifier has been extensively tested and “burned-in” for maximum reliability. Phoenix Gold Warranty This high performance car audio amplifier has a limited warranty of 30 days if installed by a consumer. If installed by an authorized Team Phoenix Gold Dealer, the limited warranty is 18 months from the date of purchase. This 18 month limited warranty can be extended to a 36 month limited warranty, if the warranty card and a copy of the sales receipt is returned to Phoenix Gold. Remember, at Phoenix Gold, we don't just manufacture mobile electronics. We also manufacture cables, “PowerFlow” distribution systems, alternators, batteries & accessories for the professional. 1 i | | M44 POWER AMPLIFIER FEATURES M44 POWER AMPLIFIER SPECIFICATIONS L LC LC CO. LO 0 0 Oo 0 Cc OC O00 0 uo 4 X 40 watts per channel 320 watts Total Dynamic Output Power 4/3/2 Channel Operation Internal Asymmetrical 12dB / Octave High Pass, Low Pass or Full Range electronic X-over External Low Pass output Bridgeable Outputs TRI-LINEAR™ output capability, simultaneous stereo & bridged mono set up is possible Adjustable Bass EQ (0 to +18dB) at 45Hz Pulse Width Modulated (PWM) MOS-FET Switching Power Supply Stable into 2 ohm loads Low RFI / EMI design Triple Darlington Output Design 2 layer 20 mil GOLD PLATED G10 Glass-Epoxy Printed Circuit Board 200mV to 2V variable input sensitivity Thermal Overload Protection Fully muted turn-on / turn-off circuitry Optically isolated power supply VI limiting circuitry with overcurrent LED Extensive burn-in and QC testing for the ultimate in reliability Optional LPL44 input * Dash Mount Subwoofer Gain Control MADE IN THE GOOD OL' USA CC CU_CUOC LL UE LOLUOLOLCL. Output Power per Channel © Both Channels Driven Into 4 Q @ 13.8V DC... eecserrrec creer ss sense ca ne se nr sers 55 WRMS 10 2 © @ 13.8V DC ….......cccrrecrecenrrrrererra sas en rene n annees 110 WRMS ~ Bridged Power into 4 Queen ee 160 WRMS Total Dynamic Output Power...................——. eme 352 WRMS THD at rated power 4 ).....................emeerereereerer A < 0.02% SMPTE at rated power 4 Qc csrerrenreassn canne r care ra eee 0e < 0.05% DIM at rated power 4 Q.........……..esserrrrr raser res rennes < 0.01% Frequency response... serre 5Hz to 30KHz +/-1dB Signal to Noise Ratio erreurs > 100dB (20 to 20kHz) Input Sensitivity.....................eeeemeee eee EE EEE 200mV to 2V Output Impedance civic re ET 2t016 Q INPUL IMPEAANCE cocci 20K Q IIE Current e eee a 1A Current Consumption Q 4 Q stereo ....................emeeemee 23 Amps Power Supply Efficiency ...................ee..ee. EEENKRE KEG > 80% Damping Factor E (20 to 10Khz) ....................cre...e mee 500 to 1 Min to Max Voltage requirements .................—....m.... 10.2 to 15.5V DC High Pass Crossover Frequencies ............ O (All Pass), 75, 125, 175Hz Low Pass Crossover Frequencies................—....—.... 50, 75, 125, 175Hz Dimensions... cece, 18.00” L x 10.63” W x 2.00" H AMPLIFIER CONTROLS AND FUNCTIONS SELECT SUB [7 revoreion mee] REMOTE LOW-PASS HI PASS REAR REAR INTERNAL SIR Л. BASS LEVEL LOW or ou! OUTPUT L INPUT R R REAR SPEAKER OUTPUTS X-OVER GAIN EXTERNAL MBR. GAIN EQ CONTROL X-OVER 75 15 75 125 + Bridged Mono - 0 - (0) (O) (Oe) 50 175 ver: ce © (@ OXOKONT OK X 2 2 2 . +12 7 13 9 8 15 11 12 14 10 POWER ON - GREEN LED INDICATOR Indicates amplifier is “ON”. OVERLOAD - RED LED INDICATOR When this LED lights up it is an indication that the amplifier has: a output current overload condition. THL - AMBER LED INDICATOR When this LED lights up it indicates the amplifier has a temperature overload condition. The amplifier has temporarily “shut-off” as the temperature of the heatsink has reached 90° C or approximately 200° F. In simple terms, the amplifier is EXTREMELY HOT and has gone into protection! POWER INPUT (B+ POSITIVE VOLTS DC) This 24kt Gold three position barrier type connector is designed to accommodate up to 7 gauge power cable. We suggest termination with a Phoenix Gold PRO80/81 Gold spade terminal. An external 30 amp fuse is recommended. FRONT FRONT HI PASS FRONT ON OVR THL POWER L INPUT R GAIN X-OVER SPEAKER QUTPUTS 75 125 REMOTE B+ B- (O) 0 175 + Bridged Mono - o © + LEFT - + RIGHT - 2 2 123 6 4 5 8 9 13 7 POWER GROUND TERMINAL (B- CHASSIS GROUND) This terminal is located next to the B+ input. It should also be the same gauge as the B+ supply cable. We suggest termination with a Phoenix Gold PRO80/81 Gold spade terminal. REMOTE TURN-ON This connection allows the M44 to be turned on/off by the source unit. Located on the three position barrier connector. Connect the automatic antenna lead or “remote” switched 12V DC lead from source unit to this terminal. FRONT & REAR SPEAKER OUTPUT This 24kt Gold barrier connector enables the usage of any size speaker wire. We suggest termination with a Phoenix Gold PRO80/81 Gold spade terminal. FRONT & REAR INPUT Any source unit with RCA outputs should operate correctly with all Phoenix Gold amplifiers. Front and rear amplifier outputs operate when using only front inputs. AMPLIFIER CONTROLS AND FUNCTIONS CONT. 9. 10. 11. 12. 13. 14. 15. FRONT & REAR GAIN CONTROL Allows for the correct matching of any signal source from its pre-amp output into the M44. Adjustments range from .2 volts (200 mV) to 2 Volts. SUBWOOFER OUTPUT This output connects to a separate amplifier (optional) used to drive subwoofer speakers. SUB GAIN CONTROL This gain control adjusts the gain of the sub-crossover and allows for the correct matching of any output from the source. Adjustments range from .2 volts (200 mV) to 2 Volts (AC/Audio). BASS EQ This bass equalizer circuit boosts sub bass up to +18dB at 45Hz HI PASS X-OVER FRONT &REAR These four position rotary Hi Pass crossover selectors control the frequency output of front and rear speaker outputs. These frequencies are O (All Pass), 75Hz, 125Hz, 175Hz. LOW PASS X-OVER This four position rotary Low Pass crossover selector controls the frequency of the Low Pass crossover for internal or external subwoofer. These frequencies are 50Hz, 75Hz, 125HZz, 175HZ INTERNAL / EXTERNAL SELECT X-OVER SWITCH This switch selects the signal directed to the rear speaker outputs. In the Internal position Low Pass signals from the internal Sub X-over or signal from front RCA jacks are selected. In the External position signals from the rear RCA jacks are selected. AMPLIFIER MOUNTING AND LOCATION Heat Rises A way From Unit The M44 has been designed to dissipate heat more efficiently than any other amplifier manufactured today. However, prolonged operation at high volumes or extremely low impedances without the aid of a fan shroud can cause the unit to overheat and protect itself. Regardless of where you decide to mount the M44 make sure that there is at least a 2-inch clearance above and around the amplifier. © M44 Heatsink В | | Figure 1 - Upright Mount The amplifier may be mounted either upright (Fig 1) or horizontally (Fig 2) but if possible NEVER upside Heat Rises Through Heatsink down (Fig 3) this position causes the rising heat to Causing Each Fin T o Heat к ” нс More Rapidly . feed-back” into the amplifier causing a premature system shut down. x Mounting corisiderations: Is there enough space for : itt the RCA input plugs? Will the speaker cables be able tete = © to enter the terminal connectors straight? Will your ttt] mounting position allow easy viewing of indicator tu LED’s and amplifier controls? Note: Do not mount =~ Sn SE. directly to metallic surfaces. Use the M44 as the template. Mark the mounting a surface with a felt pen or pencil. (Placing masking tape ~~ © © on the surface first will make these marks more M44 Heatsink visible).Do not drill any holes while using the amplifier as a template. It is very easy to damage the amplifier's powder coated surface Lo Figure 2 - Horizontal Mount in this manner. ) Heat Rises Into Unit Drill 1/8 inch pilot holes. Mount the amplifier with four panhead phillips screws. AUDIO / ELECTRICAL INSTALLATION REMEMBER TO ALWAYS DISCONNECT BATTERY GROUND BEFORE WORKING ON A VEHICLE'S ELECTRICAL SYSTEM Always use the largest gauge power / ground cable available. The M44 requires 7 gauge cable (Phoenix Gold numbers PS7R /PS7B). We suggest termination with a Phoenix Gold PRO80/81 Gold spade terminal. Always place a fuse or circuit breaker no more than 18 inches from the battery. This protection is only for the vehicle, not the stereo and should be no greater than 30 amps for this amplifier. For audio connections, we recommend using high-quality audio interconnects like the Phoenix Gold STS (Super-TRIPLE-Shielded) or our compact CSI cables. The Triple-Shielded cables are the ultimate in sound quality and reducing or eliminating unwanted “radiated noise” from your system. Make sure that you run your audio cables away from your power wires. This will help reduce any noise caused by the the & power wire “radiating” into the audio cables. ; — mu к. т @ = FET oem. La. — =. Za Utilizing the largest gauge speaker wire mw "15 biel will give you the highest “damping factor” thereby the tightest and most accurate bass as well as great sounding mids and highs (We suggest termination with a Phoenix Gold PRO80/81 Gold spade terminal). 7 GAUGE POWER ——— a AND GROUND WIRE Г AZ ’ 1 8" A ff OPTIONAL: = + 30 AMP RESETABLE CIRCUIT BREAKER OR 30A INLINE FUSHOLDER NOTE: Always make grounding cables the shortest possible length. This will reduce system noise. PowerFlow System 8 INTERNAL CROSSOVER ADJUSTMENTS The M44 has a built-in 4 channel 12dB asymmetrical High Pass active crossover and a 2 channel 12dB Low Pass active crossover. The front and rear High Pass crossover points are All Pass (0), 75,125,175 Hz. The Low Pass crossover points are 50,75,125,175 Hz. When setting the crossover points for front, rear, and subwoofer outputs, always use compact discs that have good dynamic range. 1. To adjust crossover points, center all source unit controls. 2. Set the volume control to approximately 5/8 - 3/4 of maximum. 3. Adjust the Bass EQ to the minimum setting (O/flat). 4. Adjust the subwoofer crossover frequency first. The subwoofer crossover frequency will be the most time consuming to adjust because, in most automobiles, low frequency resonances are more predominant. 5. Starting at the pre-setting of 125 Hz, adjust the subwoofer crossover frequency downward to a typical setting of 100 Hz or below. 6. Listen to the bass quality. If it is “boomy sounding”, adjust the crossover frequency even lower. Subwoofer crossover points of 75 Hz or below are common. Be sure to make the adjustments for good sound quality. 7. If the bass quality is tight and deep sounding, but the volume level is lower than the mid-range, increase the sub-woofer gain control to match the mid-range volume level. 8. Adjust the high pass crossover frequency by first centering the fader of your source unit. Starting at the pre-setting of 125 Hz, adjust the high pass channel crossover frequency downward or upward slowly and listen to the sound quality. NOTE: This frequency adjustment may be higher or lower depending on the sound quality desired, as well as the size and location of the front speakers. Adjust this setting to obtain the preferred performance. 9. After performing the crossover frequency adjustments in a stationary vehicle, test drive the vehicle to check for sound quality. Due to the road/motor noise inside a moving vehicle, you may want to re-adjust the output level of the subwoofer relative to the mid-range again. AMPLIFIER ADJUSTMENTS The M44 has front, rear and low pass gain adjustments and a Bass EQ adjust- ment. Care should be taken to adjust these properly as they affect each other. 1. Start adjustments at minimum sensitivity (Gain control at 2V, Bass EQ at 0), a counter-clockwise setting for Bass EQ and Gain (See Figure 4). Figure 4 - Bass & Gain Controls 2. Adjust the volume control on your source unit to approximately 5/8 to 3/4 volume setting. (See Figure 5) Approximately 3 o'clock or 3/4 volume setting Figure 5 - Head Unit 3. Turn the “Gain” setting adjustments on the M44 clock-wise (i.e. to the right) until you hear the amplifier distort. The M44 “clips” very softly so this can sometimes be a difficult adjustment. Please listen carefully! (see Figure 6 ) 10 AMPLIFIER ADJUSTMENTS 4. If, after adjusting the “input”gains, the bass sound quality is to your liking it would be best to not adjust the “Bass EQ” level control. Adding any “EQ” into the system either through an external equalizer or the built-in one provided with the M44 can cause the amplifier to: A. Distort easier, or... B. Overheat at a much more rapid rate than is normal. 5. If you desire more Bass output, adjust the “Bass EQ” level clockwise. The adjustment range is from “0” to “+12 dB”. We recommend using as little Bass EQ as possible. Remember, boosting +12 dB at 45Hz requires the amplifier to work 16 times harder! (See Figure 7). Figure 7 - Bass Controls 6. If you need to boost the “Bass EQ” to the maximum level +12 dB to obtain the desired bass output- SOMETHING IS VERY WRONG ! Check the design notes for your subwoofer enclosure. More than likely the woofer and the enclosure are not working together correctly. Your Installation Is Now Complete! Relax and Enjoy... If you experience any problems with your M44 amplifier, do not hesitate to contact us at (503) 288-2008. We are here to help. Phoenix Gold is a proud member of IASCA (International Autosound Challenge Association). If you would like to know more about sound off competitions in your area contact IASCA at (714) 688-8051. 11 AUDIO SYSTEM DESIGN & PASSIVE X-OVER With the extreme flexibility of the PHOENIX GOLD M44, we highly recommend that you carefully design the entire system BEFORE its installation. The following system diagrams should be used as ideas towards designing a truly awesome car audio system. Remember that THIS amplifier likes to be driven hard. Whenever possible ALWAYS choose the TRI-LINEAR mode (i.e.,stereo & bridged mono simultaneously). Passive crossover networks are optional and may be utilized to improve system performance. When passive components (capacitors and inductors) are used in multiple speaker systems, the crossover’s impedance AND the speaker system combinations MUST be considered especially when determining the amplifier loading. 12dB per octave passive crossovers are good, but tend to create sonic problems if not utilized correctly. A 12dB per octave passive crossover (an inductor and capacitor for each speaker) forms a series resonant circuit to ground whose impedance at that resonance frequency is determined by the speakers DYNAMIC impedance. If the speaker, for whatever reason, becomes “open” or disconnected the crossover input impedance is theoretically zero (0). In other words, a direct SHORT. Fortunately ALL PHOENIX GOLD amplifiers are designed to withstand this punishment. Generally, most amplifiers DO NOT like to see this condition when using passive crossovers. We recommend 6 dB or 18 dB per octave type crossovers, especially in automobiles. These crossover slopes are “In-Phase” and tend to sound better. The following pages are for your reference. Clearly, we cannot take into account crossover component values for the system you have chosen, since those values will be determined by frequency you select for your crossover point and the impedance of the speakers selected for your system. BASS AND YOUR VEHICLE A number of factors cause frequency response variations inside the vehicle. Some of these variations are caused by highly reflective material like glass, as well as highly absorbent materials, such as carpet and upholstery. Other variations are caused by resonances produced within the vehicle, due to its relatively small interior. These are called standing waves or “modes and nodes”. Resonances are an important consideration inside the vehicle because its interior dimensions are only a few wavelengths long at lower (bass) frequencies. Following are two mathematical equations describing the relationship between wavelength and dimension, as well as frequency and wavelength: W= = — 2xL F N where W is wavelength, L is length, F is frequency and V is the speed of sound in air (approximately 1128 feet per second). Combining the two equations, we get: r= V F- 1128 2L 2L where frequency is the speed of sound divided by two times the length (21). This frequency is called the “fundamental resonant frequency” and is considered a natural frequency of the space between two reflecting surfaces. To help understand why this is important inside a vehicle, we have compiled a table showing the relationship between certain lengths and certain frequencies. Length (feet) / Frequency (hertz) 0.50 1128 1.00 564 2.00 282 3.00 188 4.00 141 Table 1. Relationship between 5.00 113 lengths and fundamental 6.00 94 resonant frequency. 7.00 80 8.00 70 9.00 62 10.00 56 13 PHOENIX GOLD M44 SYSTEM 1 __ __ __INTERNAL SUB X-OVER SELECTED AT 75Hz __ __ INTERNAL SUB X-OVER SELECTED AT 75Hz a8 ] — —- —- — === — —- — — — === === == = === = = == = — | | SELECT SUB SUBWOOFER OUTPUT | | ren Bun „ZEN ua ou | . SUBWOOFER OUTPUT | Optional) ui mn Bn FEEL on Optional mm. love Ban oR ome pe me, LPL- LEVEL | ®® &" | E ona) ков | CONTROL | O O O (0) (0 pC (® O | CONTROL | O (0) © (0) (0) y O (0) | cr | осо mm Jo | Ш 1 USO С С | DB mue e A A =. TT veo осоцое se ... mo 000 eno ee Rear Audio Input For ad . ii В ООО ii Rear Audio Input For paja” " Optional Fading Ji Optional Fading E J) E Capabilities Capabilities From Source Unit Eo Unit enor wanes arte > eE | e. | o | a =, i FRONT HIGH PASS CROSSOVER FRONT HIGH PASS CROSSOVER | SELECTED AT 125Hz 0 SELECTED AT 125Hz | | | Ne \_ ` | 14 15 e LOW-PASS-75Hz and Down (MONO-for woofers) FRONT HIGH-PASS-125Hz and Up (STEREO-for mid-tweeter) + 1208 "o + SdB + 6dB + 608 + 398 + 308 о48 0 dB - 30B - 305 -6dB - 608 -0dB - SdB -12d8 -12dB 20 B0Hz 160Hz 320Hz 640Hz 12K 2.4K 5K 10K 20K 20 80Hz 160Hz 320Hz 640Hz 1.2K 2.4K 5K 10K 20K With the "Select Sub X-Over" switch in the Internal position, the rear channels become the Low Pass outputs. FRONT HIGH PASS CROSSOVER SELECTED AT 125Hz — o ; ++ ++ ; — SUBWOOFER SUBWOOFER 4 ohms 4 ohms Г т - (7 | | e PASSIVE PASSIVE | 5 X-OVER X-OVER Е | > wo = En = a - >) N REAR HIGH-PASS-125Hz and Up (STEREO-for mid-tweeter) =) | A ls, + 1208 | ; + SdB | REAR HIGH PASS X-OVER FRONT HIGH PASS X-OVER + 698 | SELECTED AT 125Hz T SELECTED AT 125Hz e | Front front mpass FRONT mi DASS | 348 | Audio Input | GAIN — | ONTROS- GAIN — | po , TN” 8 AN -12dB Optional adi For | o) | (OPTIONAL) E o | 20 ВОН: 160Hz 320H2 640Hz 1.2K 2.4K 5K 10K 20K Capabilities CB] 5 CI] REAR HIGH PASS CROSSOVER (-—-—— _ INTERNAL SUB X-OVER SELECTED AT 75Hz — — — —— SELECTED AT 125Hz | ¿ + 1 ge [werner | : | REAR INTERNAL m sua BASS LEVEL LOW PASS OUTPUT | 4 ohms 4 ohms j | L INPUT В EXTERNAL mma GAIN EQ CONTROL X-OVER L R | | | Юя Ha 5 © compte. dn ver | | X-OVER X-OVER | JU - mm JU | _— ooo ОО ООО ООО ОО ООО ЛО ) \ 16 17 6dB/Octave CROSSOVER SLOPES / COMPONENT VALUES > SPEAKER IMPEDANCE FREQUENCY [== | Aile | 20hm 40m || som | | 1 T7! y Li C1 L1 C1 Li C1 80 41mH |1000uF |8.2mH 500 uF | 16 mH | 250 uF 100 31mH | 800uF |6.2mH' 400uF | 12mH | 200 uF 130 24mH | 600uF |4.7mH| 300 uF : 10 mH | 150 uF 200 1.6mH | 400uF 13.3MH! 200 uF 16.8mH :100 uF 260 12mH |» 300uF :2.4mH| 150 UF 4.7mH . 75 uF 400 8mH | 200uF 1.6mH| 100 uF [3.3 mH | 50 uF | 600 | 5mH ‘ 136uF [1.0mH! 68uF [20 mH | 33uF | 800 | -41mH ; 100uF 82mH 50uF ¡1.6mH | 25uF | | ' ' | | 1000 .31 MH 78 uF 62 mH: 38uF 12mH 20uF | 2 | | oe | ; _ ——-| : i | ! | ! i ; ! ! ; | 1200 25mH | 66uF .51mH) 33UF 1.0mH 16uF | | 1800 16 mH 44uF 33 mb 22uF .68mH: 10uF | 4000 | воин 20uF .16mH 10uF 33 mH 5 uF 6000 S1uH | 14uF 10 mH 6.8 uF 29 mH | 8.3uF | 9000 34uH | 9AuF 68 ue 47uF A15mHi2.2uF | 12000 25uH | 66uF | S1uH) 330F AmH 164F | as | 212 0 dar en ee Lo IZ X 6 dB Per Octave High-Pass Filter 18 12dB/Octave CROSSOVER SLOPES / COMPONENT VALUES FREQUENCY HERTZ 2 Ohm | Li C1 L1 C1 | SPEAKER IMPEDANCE 4 Ohm 8 Ohm C1 80 5.5 mH 680 uF | 11 mH| 330 UF | 22 mH 180 uF 100 4.7 mH 560 uF | 9.1 mH 270 uF | 18 mH | 150 uF | 130 33mH | 400UF | 6.8mH| 200 uF | 16 mH | 100 uF 200 22mH | 300uF 4.7mH 150uF [9.1 mH | 75uF | 260 1.8mH | 200uF 3.6 mH 100 uF |6.8 mH | БОР | 400 11mH | 160uF 22mH, 68uF 47mH | 33uF | . __À 600 75mH | 100UF |15mH| 47uF 3.0mH | 27uF 800 .50 MH 68 uF | 1.0 mMH 33 uF 2.0 mH | 15 uF 1000 | 47 т 50 uF |.91 mH 27 uF [1.8 mH 13 uF | | i 1200 83mH | 44uF 75H 22uF 15mH! 11uF | 1800 ‚ .27mH - 30uF .50mH 15uF 1.0mH | 6.8 uF 4000 AOmH | 15uF 22 mH 6.8 uF |.47 mH | 3.3 uF | | | —— - 6000 O 78UH | 10UF Л тН | 4.7 УЕ .33mH 2.2uF 9000 50uH | 6.8uF |.10 mH 33 uF 23 mH SUF | | 12000 | 39uH | 4.7uF 75 uH | 2.2 uF 15 mH 1.0 uF C1 L1 1¢ | 000 i ER L1 Ci - 12 dB Per Octave High-Pass Filter hed 12 dB Per Octave Low-Pass Filter 19 18dB/Octave CROSSOVER SLOPES / COMPONENT VALUES FREQUENCY HERTZ SPEAKER IMPEDANCE L 8 Ohm | [O1] 11 \c2c1 ic '68uUF 1.1 uF | 3.3 uF 330 uF | 6.0 mH [1000 uF! 160 uF | 12 mH |500 Е | 100 270 uF | 4.7 mH | 800 uF| 150 uF | 10 mH | 400 uF 130 200uF 33mH 600 UF| 100 uF 7.5mH | 300 uF | 200 150 uF | 22mH | 400 uF| 68 UF 5.4 mb 200 uF | 260 100uF | 1.8mH ' 300 uF 50 uF 3.3 mH | 150 uF 400 esuF |1.1mH | 200uF! 33 uF 2.4 тн м | р 600 47 uF | 80 mH 130 uF 21 uF 1.6 mH 68 UF 800 33uF | 60mH 100UF| 16UF 12mH SOUF 1000 27 UF 47 MH 75 UF. 13 uF 90 mH | SOUF : * | — 1200 22 uF | .39 mH 68 uF 11 UF |.80 mH | 33 uF | 1800 15uF .27mH 47uF 7.5uF 50 mH 22 uF 2000 13uF | 24mH A0UF 68UF 47mH 20uF 3000 8.8 uF .16 mH 27 uF | 4.7 uF | .33 mH | 14 uF | 4000 6.8uF :.12mH : 20uF 33uF ..24mMH —10uF | 6000 4.7uF 82H 13uF 2.2 uF 21 mH 68uF 8000 330F | GOuH | 10uF 45uF A2mH SOUF | 10000 2.7 uF 47 uH | 8.2 uF 1.3 uf 10 mH ; 3.9 uF | 12000 2.2 uF 38 uH | 82 uH 20 M44 Circuitry Select Sub X-Over Extemal Rear Left @ НР | о 40W Rear input A / Left Output intemal N 0 Hz © 75 Hz Rear Gain 125 Hz со 0-20dB 175 H Hi Pass к М X-Over per > > PF © Subwoofer TT _ Output 75 Hz Sub Gain Remote Low Pass 125 Hz 0-200B Bass EQ Level Control 175 Hz 0-12dB Low Pass X-Over | Front Left @ HPF AOW Front Input / Left Output 0 Hz | 75 Hz | Front Gai 125 Hz | A A 175 Hz Hi Pass X-Over (3 Je M44 Block Diagram Left Channel Shown Rev 1 7-13-95 BWH ">

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Key features
- 4 x 40 watts per channel
- 320 watts Total Dynamic Output Power
- Internal Asymmetrical 12dB per Octave High Pass, Low Pass or Full Range electronic X-over
- Bridgeable Outputs
- Adjustable Bass EQ (0 to +18dB) at 45Hz
- Low RFI / EMI design
Frequently asked questions
The M44 has a 30-day warranty if installed by a consumer. If installed by an authorized Team Phoenix Gold Dealer, the limited warranty is 18 months from the date of purchase. This 18-month limited warranty can be extended to a 36-month limited warranty if the warranty card and a copy of the sales receipt is returned to Phoenix Gold.
The M44 can deliver up to 320 watts of total dynamic output power.
The M44 has a built-in 4 channel 12dB asymmetrical High Pass active crossover and a 2 channel 12dB Low Pass active crossover. The front and rear High Pass crossover points are All Pass (0), 75, 125, 175 Hz. The Low Pass crossover points are 50, 75, 125, 175 Hz.