MEMPHIS AUDIO SRX250.1V Street Reference Mono Subwoofer Amplifier Instruction Manual

MEMPHIS AUDIO SRX250.1V Street Reference Mono Subwoofer Amplifier

Product Information

• Models: SRX1200.1V, SRX750.1V, SRX500.1V, SRX250.1V
• Brand: Street Reference

Product Usage Instructions

• Installation Recommendations
  Memphis Audio recommends that the installation of the amplifiers be done by an Authorized dealer to prevent damage and warranty voiding. Amplifiers are typically mounted in the hatch/trunk area of a vehicle or behind the seats in pickup trucks.

• Mounting Instructions
  Choose a location with proper ventilation for the amplifier and secure it using the provided screws. Ensure you are not drilling into any electrical, hydraulic, fuel, or fluid lines.

• Power Supply Connections
  Install the fuse at the battery last. Use conventional stranded copper wire for all connections and finish the ends with proper-size terminals to prevent equipment failure due to excessive heat.

• 12 Volt + Connection
  Make the 12V+ connection directly at the positive battery post using the recommended wire size and fuse. The fuse should be installed within 18 inches of the battery.

• Ground Connection
  Connect the ground directly to the vehicle’s chassis close to the amp using the same wire size as the 12-volt connection. Remove any dirt, grease, paint, or coatings before attaching the ground wire.

• Remote Turn On
  Connect the remote turn-on to the source unit’s remote turn-on lead or power antenna output wire. Ensure that power is maintained when using the power antenna wire even when a source other than the radio is selected.

FAQ

• Q: What should I do if I am unsure about installing the amplifier myself?
  A: Contact your local authorized Memphis Audio Dealer for assistance with installation.

• Q: How should I troubleshoot my amplifier?
  A: Start troubleshooting by testing the amp, speaker, and speaker wires first to identify any issues.

MODELS

• SRX1200.1V
• SRX750.1V
• SRX500.1V
• SRX250.1V

STREET REFERENCE MONO AMPLIFIERS

Memphis Audio built a 50-year legacy in the audio industry engineering the highest quality products to produce the best possible listening experience for our fans and loyal supporters. To fully appreciate our products we recommend taking the time to read and follow the instructions in this manual. As always, we recommend all installations and services be performed by an authorized Memphis Audio dealer.

Tips

• For optimal performance, Memphis recommends using only Memphis Connection accessories. Outfitting your system with properly sized Memphis Connection wire and accessories will dramatically boost your listening experience and increase the durability of your Memphis Audio products.
• Street Reference amplifiers feature a MOSFET power supply with a 12dB per octave crossover to ensure the most accurate musical reproduction. All models feature a fully variable crossover with 12db per octave slopes allowing you the ability to tailor the sound to best fit your speakers and listening preferences.
• Check out our full line of Street Reference speakers and subwoofers to create a complete Memphis Street Reference system.

Features

• 2Ω stable (SRX1200.1V 1Ω stable)
• High & low-level inputs
• Bass boost 45Hz 0/6/12dB
• Variable subsonic filter (15Hz – 50Hz)
• Variable low pass filter (5 0Hz-250Hz)
• Protection circuitry: overload, short, thermal & reverse polarity
• Textured aluminium heatsink
• Selectable bass boost
• Ultra-bright LED accent light strip
• Remote level control included

Nickel Plated Connectors
Ensures solid electrical connection that resists corrosion

• Fully Variable High & Low Pass Crossovers
  Fully variable crossovers promote installation ease and save the cost of outboard crossovers. Additionally, they may be used in conjunction with outboard passive or active crossovers depending on the complexity required by the system. The 12dB per octave slope offers roll-off above or below the selected frequency.

• Protection Circuitry
  Protects against overload, short circuit, thermal and reverse polarity. These protection features are designed to protect the amplifier from misuse as well as from common causes of amplifier failure.

• LED Light
  Blue light indicates that the amplifier is working normally. If the light is not illuminated or is glowing red, consult the troubleshooting section of the manual.

• Subsonic Filter
  A subsonic filter has been provided to filter out unwanted subsonic bass frequencies below the audible range of the subwoofer. This feature helps improve the amplifier’s overall performance since power is not wasted reproducing frequencies beyond the speaker’s operating range

• Remote Level Control
  Remote allows you to control the level of the subwoofer remotely by controlling the output level of the amplifier

Installation Information

• Memphis Audio recommends the installation of our products to be performed by an Authorized dealer. Attempting an installation project on your own or through an unauthorized source may result in damage to your products and may potentially void your warranty.
• Amplifiers are generally mounted in the hatch/trunk area of your vehicle or behind the seat of most pickup trucks. Select a location that provides adequate ventilation. The amplifier should be secured using the screws provided.

Warning
For your safety, always inspect the mounting location carefully to ensure you are not drilling into any electrical, hydraulic, fuel or fluid lines. Always check your speaker load with a multi-meter before connecting the amplifier. Connecting any speaker load lower than the rated impedance of the amplifier will result in damage to the amplifier. Damage of this nature is NOT covered under warranty. Please pay close attention to what connections are made to the amplifier.

Tips
If you are uncertain or uncomfortable proceeding with your installation, please contact your local authorized Memphis Audio Dealer

Troubleshooting

When troubleshooting your amp, speaker and speaker wires should be tested first.

No Output:

• Confirm all wiring is firmly connected.
  Both +12V and REM terminals must have +12 Volts present and GND must be connected to the chassis’ ground or the negative battery terminal.

• Confirm the signal source is connected and supplying an output signal. To confirm the amp is working, connect an RCA patch cord to the line inputs of the amplifier (do not connect the other end of the patch cord). Briefly tap the centre pin of each disconnected RCA with your finger. This should produce a noise (brief static or hum) in
  the speakers.

• If the amp is hot, check the speaker impedance or load. The total minimum impedance of all speakers should not be lower than the rating of the amp.

Only One Channel Works:

• Confirm the speaker terminal strip connections are firmly connected.
• Check the “balance” control on your signal source.
• If using RCA Low-Level inputs, reverse the input plugs at the amplifier. If the silent channel reverses position, the problem is in the source unit or connecting cable.

Weak Output

• Check input sensitivity control adjustment.

Unwanted Noise

• Whine that increases and decreases with engine speed – confirm the Amp & Source unit are grounded properly.
• Clicking or popping noise at a rate that follows engine speed – this is often induced by the vehicle’s ignition system. Confirm that the vehicle is equipped with resistor spark plugs and wires. The ignition system may need service.
• Noise can be caused by routing speaker input wires too close to the light wires and other accessory wires in the vehicle. Re-route wires to avoid unwanted interference.
• If the above steps do not improve/reduce noise, the system should be checked by a professional audio installer at a Memphis Authorized Dealer.

Red LED is Illuminated

• The speaker or wire is shorted
• Battery voltage too high
• Battery voltage too low
• The amplifier has overheated due to improper ventilation

Power Supply Connections

Install the fuse at the battery last!
Use conventional stranded copper wire for all connections. Finish the ends of the wires at the amp and vehicle with proper-size terminals. Poorly made connections and/or inadequate wire size will generate excessive heat and may lead to equipment failure.

12 Volt + Connection
Make the 12V+ connection directly at the positive battery post using the proper wire size and fuse listed below, The fuse should be installed within 18” of the battery. This fuse is vital to protecting the vehicle from damage in the case of a dead short.

Model

|

Amp Kit

---|---
SRX250.1V| 8
SRX500.1V| 4
SRX750.1V| 4
SRX1200.1V| 4

Ground Connection:
Make ground connection directly to the chassis of the vehicle as close to the amp as possible. Make sure this connection is made with the same wire size as used for the 12-volt connection. Ensure that all dirt, grease, paint and coatings are removed before attaching the ground wire to the chassis.

Remote Turn On
The remote turn-on should be connected to the source unit’s remote turn-on lead or power antenna output wire. When using the power antenna wire, make certain it does not lose power when any source other than the radio is selected.

Power Connections

Features & Controls

SRX250.1V//SRX500.1V//SRX750.1V//SRX1200.1V

• Gain
  The gain control is NOT a volume control. The gain control adjusts the amount of signal required to drive the amplifier to full output. With the gain at full clockwise rotation, less signal voltage is required to drive the amp to full output. With the gain at full counter clockwise rotation, more signal voltage is required to drive the amp to full output. For optimal performance, set the gain control to minimum.

• Low Pass Filter
  The lowpass crossover/filter is designed to remove high frequency information from a speaker. This is generally used to prevent mid bass speakers or subwoofers from trying to reproduce mid and high frequency information that they are not designed to reproduce. The crossover frequency is adjustable from 50Hz-250Hz and use a 12dB per octave slope. To engage the LPF slide the switch to the position marked LPF. Frequency selection is made by rotating the dial: Clockwise raises the frequency, and counter-clockwise lowers the frequency. Most subwoofers should be set between 80Hz and 100Hz depending on how low the mid-bass or midrange drivers are capable of playing.

• Bass Boost
  Bass boost is switchable to off (0dB) or +6dB and +12dB. Boost should be used with discretion. Electronically enhance boost places an additional load on the amplifier and the speakers they are connected to.

• Remote Level Control
  The amplifiers have inputs for a remote level control (RLC). This will allow the amplifier input level to be adjusted from the listening position. Connect the RJ45 jack on the front to the amplifier. Install the control module in front of the vehicle in a location that is easily accessible to the driver.

• Subsonic Filter
  The subsonic filter utilizes an internal 12dB per octave slope and is variable from 15Hz-50Hz

Speaker Connections

SRX250.1V//SRX500.1V//SRX750.1V//SRX1200.1V
The RCA jacks marked Low Input should be connected to the low-level outputs of your source unit or signal processor. High-level (speaker-level) inputs are provided as well.

Specifications

SPECIFICATIONS

| SRX250.1V| SRX500.1V| SRX750.1V|

SRX1200.1V

---|---|---|---|---
RMS Power/CH 4˜| 150w x 1| 350w x 1| 400w x 1| 550w x 1
RMS Power/Ch 2˜| 250w x 1| 500w x 1| 750 w x 1| 950w x 1
RMS Power/Ch 1˜| –| –| –| 1200w x 1
THD 4˜| <1%| <1%| <1%| <1%
THD 2˜| <1%| <1%| <1%| <1%
Signal/Noise Ratio| >98dB| >98dB| >98dB| >98dB
Variable LPF Freq Range| 15Hz – 250Hz| 17Hz – 250Hz| 15Hz – 250Hz| 16Hz – 250Hz
Bass Boost Input| 45Hz 0/6/12dB| 45Hz 0/6/12dB| 45Hz 0/6/12dB| 45Hz 0/6/12dB
Low Level Impedance| 100mV – 6V| 100mV – 6V| 100mV – 6V| 100mV – 6V
Low Level| 10K ˜| 10K ˜| 10K ˜| 10K ˜
Dimensions| 10.1” x 7.87” x 2.16”| 9.13” x 7.87” x 2”| 8.92” x 7.87” x 2.16”| 12.46” x 7.87 x 2.16”

Features and specifications are subject to change without notice.

Service/Returns

Please consult with your local authorized dealer if you experience issues with your amplifier.

You may also contact Memphis Audio customer service at 800.489.2300 or email tech support directly at: techsupport@memphiscaraudio.com. Do not attempt to return your amplifier directly to us without first calling for a return authorization number. Units received without an accompanying return authorization number will be processed more slowly. Additionally, you must include a copy of your purchase receipt from an authorized dealer for consideration of in-warranty service, otherwise repair charges will apply. Units received without a receipt will be held for up to 30 days allowing us time to contact you and obtain a copy of the receipt. After 30 days all units will be returned to you unrepaired.

Warranty

Street Reference Amplifier Limited Warranty:
This product has a 1-year warranty from the date of purchase for defects in material or workmanship. This warranty will extend to 2 years when installed by an authorized Memphis Audio dealer using Memphis Connection products. The warranty is void if the product has been physically damaged by improper usage or abuse. If repairs are attempted outside of the Memphis Audio facility, the warranty is void.

This warranty is limited to the original retail purchaser and does not cover expenses incurred in the removal or re-installation of the product. This warranty does NOT apply to product exterior and cosmetics. Memphis Audio disclaims any liability for incidental or consequential damages caused by product defects. Memphis Audio’s liability will not exceed the purchase price of the product and the warranty period specified.

WHAT IS NOT COVERED UNDER WARRANTY:

• Damage due to improper installation
• Damage caused by exposure to moisture, excessive heat, chemical cleaners and/or UV radiation
• Damage through negligence, misuse, accident or abuse. (Repeated returns for the same damage may be considered abuse)
• Product damaged in accident and/or due to criminal activity
• Service performed by anyone other than Memphis Audio
• Subsequent damage to other components
• Any cost or expense related to the removal or re-installation of the product
• Products with tampered, missing, altered or defaced serial numbers/labels
• Freight damage
• The cost of shipping product to Memphis Audio
• Return shipping on non-defective items
• Any product not purchased from an authorized Memphis Audio dealer

Some states do not allow the exclusion or limitation of incidental consequential damages. The above limitations or exclusions may not apply to you. This warranty gives you specific rights, you may have other rights which vary from state to state. If warranty service is required, a return authorization number is required to return the product to Memphis Audio. Warranty shipments to Memphis Audio are the responsibility of the purchaser. Pack the product carefully in the original carton if possible. Memphis Audio will not be responsible for damages incurred in shipment or due to improper packing materials used by the purchaser. If determined to be within warranty, your product will be repaired or replaced at the discretion of Memphis Audio.

Contact Information

• 122 Gayoso Ave. Memphis, TN, USA.
• 800.489.2300
• www.memphisaudio.com.
• Facebook: @MEMPHISAUDIO
• Instagram: @MEMPHISCARAUDIOUSA.

References

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