Mercury MR8DUAL - Subwoofer Hifonics - Free user manual and instructions

Product Type	Car Audio Subwoofer
Brand	Hifonics
Model	Mercury MR8DUAL
Speaker Size	8 inches (20 cm)
Impedance	Dual 4 ohms (configurable to 2 ohms or 8 ohms)
RMS Power Handling	300 Watts
Peak Power Handling	600 Watts
Frequency Response	30 Hz - 500 Hz
Sensitivity	88 dB (1W/1m)
Voice Coil Type	Dual voice coil (DVC)
Cone Material	Polypropylene with rubber surround
Mounting Depth	5.5 inches (140 mm)
Cutout Diameter	7.25 inches (184 mm)
Overall Diameter	8.5 inches (216 mm)
Weight	8.5 lbs (3.9 kg)
Recommended Enclosure Type	Sealed or Ported (0.5-1.0 cu ft sealed, 0.8-1.5 cu ft ported)
Cleaning Instructions	Wipe gently with a dry microfiber cloth. Avoid liquids and abrasives.
Safety Precautions	Do not expose to moisture. Disconnect power before installation. Use proper gauge wiring.
Warranty	1 year limited warranty

Frequently Asked Questions - Mercury MR8DUAL Hifonics

What is the power handling of the Hifonics Mercury MR8DUAL subwoofer?

The subwoofer handles 300 Watts RMS and 600 Watts peak power.

Can I wire this subwoofer to a 2 ohm load?

Yes, the Mercury MR8DUAL has dual 4 ohm voice coils. By wiring the coils in parallel, you can achieve a 2 ohm load.

What size enclosure is recommended for this subwoofer?

For a sealed enclosure, use 0.5-1.0 cu ft. For a ported enclosure, use 0.8-1.5 cu ft tuned to 35-40 Hz.

What is the mounting depth of the Mercury MR8DUAL?

The mounting depth is 5.5 inches (140 mm). Ensure your enclosure or vehicle has enough clearance.

Is the Hifonics Mercury MR8DUAL suitable for a sealed or ported box?

It works well in both. A sealed box provides tight bass, while a ported box offers louder, deeper bass.

What is the impedance of this subwoofer?

It has dual 4 ohm voice coils. You can wire it for 2 ohms, 8 ohms, or run each coil separately at 4 ohms.

Does the Mercury MR8DUAL require a separate amplifier?

Yes, it is a passive subwoofer and needs an external amplifier to power it.

What is the frequency response of the Mercury MR8DUAL?

The frequency response is 30 Hz to 500 Hz, covering deep bass to upper bass frequencies.

How do I clean the subwoofer cone?

Use a dry microfiber cloth to gently wipe dust from the cone and surround. Do not use any liquids or cleaning agents.

What size wire should I use for installation?

Use 12 to 16 gauge speaker wire for connections. Ensure the wire is properly secured and insulated.

USER MANUAL Mercury MR8DUAL Hifonics

Bassreflex port on the rear

Sound transmission through ski bag

Bassreflexkanal hinten

Bassreflex port cover on the front

Bassreflex port on the front

Sound transmission directly into the trunk

Bassreflexkanal vorne

Subwoofer: 2 x 20 cm (8"), Chrome Steel Basket, Non-pressed Paper Cone

Power Rating RMS: 600 Watts (300 Watts per Terminal)

Power Rating Max. 1200 Watts (600 Watts per Terminal)

Impedance: 4 + 4 Ohm (4 Ohms per Terminal)

Voice Coil: 50 mm (2")

SPL: up to 144 dB

Dimensions W x H x D: 78 x 29 x 39/29 cm

IMPORTANT NOTES

Choose a suitable location for your soundsystem, that neither the driver's field of vision nor the security of the inmates will be affected. This stands also for airbag-zones and safety belts. The permanent temperature of the location should not be lower than -10°C and not higher than 50°C. Protect the device from moisture and humidity.

Ensure that your subwoofer enclosure will not get loose during the drive and hurt someone in the passenger cabin. It is recommended, that you mount the subwoofer enclosure with suitable belts or any other mounting solutions in the trunk area.

Please observe not to damage any serial components of your vehicle (airbags, wires, gastank etc.) during the installation of your soundsystem by drilling or any other operations.

Never screw or mount any other devices (amps, caps etc.) onto the subwoofer enclosure, this may cause damage to the electricity.

For your personal concerns you should choose a appropriate sound level for the subwoofer enclosure, that neither the roadworthy of the driver nor his concentration will be disturbed, that he is able to notice possible traffic noises and acoustical warning signals.

Modern car audio soundsystems provide very high acoustic pressure beyond the 100 dB mark. Please observe in this case, that permanent use of high sound levels may cause damage to your ability of hearing.

Please ensure by any means the correct polarity of all connections. Faulty installed and connected devices may get damage the vehicle and the device permanently.

Please check in any case the operation guide or wiring manual of your amplifier which you'd like to use for the soundsystem.

Never connect the speaker terminals with the 12 Volt power supply, otherwise the speakers may get damaged.

LED-ILLUMINATION

The HiFONICS MERCURY MR subwoofer enclosures have an integrated LED-illumination. This illumination is only allowed to light up, if the vehicle is not in driving condition. It is recommended to switch the illumination with the vehicle's trunk illumination.

Right Terminal:

Switch for illumination (bluw / white)

For the +12V power supply of LED-illumination, use the attached cable at the right terminal and connect it accordingly. Please ensure the correct polarity as marked.

NOTE: Do not use the speaker cables as power supply for the LED-illumination.

POWER RATINGS

The HiFONICS MERCURY MR subwoofer enclosures are designed for high bass levels. Anyhow it is possible, that unsatisfying sound characteristics could be caused by too low or too high amplifier power. In certain circumstances this even can cause a damage to the loudspeakers.

It is recommended to choose rather a more powerful amplifier (ca. 15-20% more Watts RMS than the max. RMS power rating of the woofer) and to use the amplifier not at the maximum output level (low distortion factor, good sound characteristics). A weaker amplifier at the maximum level causes worse sound characteristics due to the higher distortion factor.

Never crank up the output volume of your amplifier to the maximum level or run the amplifier into the clipping range. If the sound is distorted and not clean, turn back the level until the distortions disappear.

The HiFONICS MERCURY MR subwoofer enclosures have no integrated limiter or clipper, which is limiting the level upwards. Overamplified bass peaks leads inevitably to a burn out of the voice coil of the woofer. A burn out of the voice coil, caused by clipping/overamping is not covered by the usual warranty.

Recommended power ratings:

• 1 x stereo-amplifier (one channel per terminal) with 2 x 250 - 350 Watt RMS (Sinus) into 4 Ohms
• 1 x mono-amplifier (parallel-operation on both terminals) with 500 - 700 Watts RMS into 2 Ohms
• 1 x bridged stereo-amplifier (parallel-operation on both terminals) with 500 - 700 Watts RMS into 2 Ohms. IMPORTANT: the amplifier must be stereo (per Channel) 1 ohm stable

Please refer to the minimum impedance of the installed amplifier. In case of doubt ask your specialist dealer.

Please also refer to the interconnection examples on the next page.

INTERCONNECTION EXAMPLES

NOTE: Please ensure that the connection of the cables have the correct polarity as marked.

Parallel-Operation
2 Ohms
Mono-Amplifier

Channel 1
1 Ohm
Channel 2
1 Ohm
Stereo-Amplifier

HIFONICS

Mercury SERIES

Audio Design GmbH

Am Breilingsweg 3 · D-76709 Kronau/Germany

Tel. +49 7253 - 9465-0 · Fax +49 7253 - 946510

www.hifonics.de

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