EasyManual 
Impulse 4.320 - Receiver FOCAL - Free user manual and instructions
Find the device manual for free Impulse 4.320 FOCAL in PDF.
User questions about Impulse 4.320 FOCAL
0 question about this device. Answer the ones you know or ask your own.
Ask a new question about this device
Download the instructions for your Receiver in PDF format for free! Find your manual Impulse 4.320 - FOCAL and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. Impulse 4.320 by FOCAL.
USER MANUAL Impulse 4.320 FOCAL
Please validate your Focal-JMlab warranty, it is now possible to register your product online: www.focal.com/warranty
Thank you for choosing Focal and sharing our passion for sound and for music, expressed with precision and purity: "Listen Beyond". These high-tech speaker drivers incorporate enhanced Focal features in speaker driver design to achieve a powerful, high-quality sound. To get the very best out of your system and to exploit the full performance of its speaker drivers, we recommend that you read this booklet, then store it in a safe place to refer to in the future. Any problems caused by failure to follow the instructions may invalidate your guarantee. For optimum results, we recommend that you have the system installed by a professional.
CAUTION
This symbol indicates important instructions. Failure to comply with these instructions may result in injury or material damage.
Contents
- IMPULSE 4.320 amplifier
-User manual - Set of accessories
Accessory available (sold separately):
- 1 ISO Plug and Play cable for connecting up to compatible head units
CAUTION
- Do not operate any functions which may distract you while driving. Functions or settings requiring sustained attention must only be used when the vehicle is at a complete standstill. Always make sure to stop your vehicle in a safe place before operating these functions. Failure to do so may cause an accident.
- Keep the volume at a low level to be able to hear outside noises while driving the vehicle. Failure to do so may cause an accident.
- Never open your IMPULSE 4.320 amplifier and never make any modifications to the product. Failure to do so may cause an accident, a fire or an electric shock.
CAUTION
- Only use your IMPULSE 4.320 amplifier with 12V mobile applications. Any use other than the intended use may cause a fire, an electric shock or injury.
- Use fuses with the adequate amperage. Failure to do so may cause a fire or an electric shock.
- Do not obstruct the heat sink on your IMPULSE 4.320 amplifier. Internal overheating may occur and cause a fire.
- Wire the connections correctly. Make sure you use the appropriate wire gauge and type of cable. Failure to do so may cause a fire, injury and/or material damage.
- Do not use nuts or bolts on steering or breaking systems, tanks, seat-belt anchor points or other safety elements for connecting the ground. Use of these parts as ground may deactivate the vehicle's control system and cause a fire or other technical problems.
- Keep all small objects which could be swallowed, such as fasteners, screws and accessories, out of the reach of children. Swallowing such objects may cause serious injuries. If swallowed, seek medical advice.
- Before beginning installation, disconnect the negative terminal of the battery to avoid any risk of injury, fire or material damage (fig. 1).
fig.1
WARNING
Prolonged listening at high volumes, over 110dB, can cause long-term damage to your hearing. Listening at volumes over 130dB, even for short periods of time, can cause permanent damage to your hearing.
Stop operation in the event of a problem. Failure to comply with this precaution may cause injury or material damage. If a malfunction persists, return the equipment to your Focal dealer for repair.
Use the specified accessories and be sure to install them correctly. Only use the accessories specified in the user manual and those which are supplied in the packaging. The use of other components could cause internal damage to the equipment, or it may not be correctly installed. The parts used may become loose and cause damage or a technical malfunction of the equipment. Failure to do so may cause an accident, a fire or an electric shock.
Do not install this product in very humid or dusty places. Avoid installing the equipment in places with high levels of humidity or with an excessive presence of dust. Humidity or dust getting inside the product may cause a technical fault.
Installing your IMPULSE 4.320 amplifier
Installation of this product requires technical knowledge and experience. If you are uncertain of your ability to correctly install the amplifier, we strongly recommend you contact your Focal dealer who will install it for you, so that you will be able to take full advantage of the full capabilities of your IMPULSE 4.320 amplifier.
Wiring your IMPULSE 4.320 amplifier
Only use the wiring harnesses recommended in this manual and the accessories supplied.
Use the ISO cable (sold separately) to facilitate wiring. The speaker driver cable must ONLY be used for connecting the amplifier to the speaker drivers. The wire gauge of power cables must correspond with those indicated in the table (paragraph 3.1) and depends on the power of your amplifier and the length of cable required. Use double or triple shielded RCA cables to avoid any interference of the low-level signal.
Operating time of your IMPULSE 4.320 amplifier
Avoid using the amplifier for extended periods of time without starting the vehicle. This may cause the battery to run flat prematurely.
Cooling system
Do not cover the top of your IMPULSE 4.320 amplifier as this may cause overheating.
Materials required for installation (in addition to accessories supplied)
- 2 sheaths of adequate cross-section (1 sheath for the power cable, 1 sheath for the speaker driver, REMOTE and RCA modulator cables)
- Multimetre (voltage/amperage)
- Soldering iron + solder
Crimpers - Wire stripper
- Wire cutter
- Battery terminal spanner
- Hand drill and assorted drill bits
- Heat-shrink tubing of adequate diameter for the different cables
- Power cable of adequate length and wire gauge
- Remote turn-on cable (REM input on amplifier) of adequate length and wire gauge
- Ground cable of suitable length and wire gauge
- Fuse holder and suitable fuse
- Spade terminal for connecting to positive (+) battery terminal
- Spade terminal for connecting to the chassis of the vehicle (-).
- Screw with minimum 0^564^ (6mm) screw head and its nut for ground connection to the chassis of the vehicle
Installation
The following section deals with issues related to the vehicle which must be considered for before installing your amplifier. You will save time by planning the layout of the system and wiring in advance.
During this preparatory time, please ensure that all the settings remain accessible once the installation is complete.
Before beginning the installation, please follow these rules carefully:
- After thoroughly reading the user manual, make sure you have understood all the instructions before installing your amplifier.
- Disconnect the battery's negative wire before installation (fig.1).
- To facilitate assembly, we strongly recommend you unwind all the wires before installing your amplifier.
- Route all RCA, speaker driver and REM cables, away from the power cables in order to avoid any signal interference.
- Use quality connectors/splicing or good soldering for connecting the amplifier in order to ensure a reliable installation and to minimise any loss of signal or power.
- Before carrying out any operations, be extremely careful not to cut or drill through the fuel tank, fuel, brake, hydraulic or vacuum lines, any electrical wiring or safety devices.
- Never route a wire under the vehicle. Wiring must be installed inside the vehicle. When routing the cables, make sure they do not impede your driving. Cables obstructing or routing through areas such as the steering wheel, pedals (brake, accelerator and clutch, etc.) may be extremely dangerous
- Avoid routing wires over or through sharp edges. Any wire routed through metal must be protected with a grommet. Route the cables well away from mobile parts (seat rails,...) and from sharp or pointed edges. This will avoid getting the cables caught or damaging the cables which may cause a short circuit.
- Always protect the battery and electric circuit from potential damage using fuses. Install a fuse holder and adequate fuses on the 12V positive (+) power cable less than 15^ (40cm) away from the battery terminal. Ideally, this above-mentioned distance should be as short as possible (fig.10).
- Prepare the chassis ground by scraping off any traces of paint on the metal surface in order to ensure proper grounding. The grounding connections should also be as short as possible and ALWAYS be connected to metal welded to the body or the chassis of the vehicle (fig.2). The ground point which is generally chosen is the one connecting the negative terminal of the battery to the chassis of the vehicle.
- NEVER INSTALL this product in the engine compartment of the vehicle. This will void the warranty.
1 - Positioning of your IMPULSE 4.320 amplifier
Where to install your IMPULSE 4.320 amplifier?
Due to the power of the amplifier, heat dissipation is required for correct operation. For this reason, the amplifier, particularly the top, must be installed in a well-ventilated area. Avoid covering or embedding the amplifier in its installed location.
2 - Mounting your IMPULSE 4.320 amplifier
Position your amplifier at the desired location and make matchmarks.
Locate the attachment points on your support using the mounting bracket supplied.
Use screws suitable for your type of support.
3 - Wiring your IMPULSE 4.320 amplifier
CAUTION
If you are uncertain of your ability to correctly install the amplifier and to wire the system up properly, get a Focal dealer/installer to do it for you.
WARNING
Avoid routing power cables close to low-level input cables (LOW-LEVEL INPUTS) and high-level input cables (HIGH-LEVEL INPUTS), close to the car aerial or close to sensitive equipment and harnesses. High-current power supply cables can cause static/interference that affects audio signals.
WARNING
Keep the cables as short as possible to optimise the quality of the installation. This will also limit signal loss.
WARNING
Before beginning the connection phase, remove the negative (-) terminal from the battery of the vehicle (fig.1).
3.1 - What wire gauge should I use for the power cable?
Your IMPULSE 4.320 amplifier requires a power supply of adequate amperage.
The required wire gauge of power cables depends on the length of cabling to the battery. See recommended wire gauge in the table below:
| Length of cable to the battery in feet (metres) | |||
| Length < 3ft (1m) < 10ft (3m) < 13ft (4m) | |||
| Cross sectional area in mm2 | ISO cable recom-mended | 3.3mm2 | > 3.3mm2 |
| AWG 12 AWG < 12 A | |||
Compliance with these wiring rules is essential for the safety of your electrical installation, and important for maintaining maximum performance of your IMPULSE 4.320 amplifier.
3.2 - Wiring the input and output signals on your IMPULSE 4.320 amplifier
3.2.1 - Your head unit is equipped with RCA outputs
Route the modulator cables (RCA), the speaker driver cables and the REM cable together, ensuring to isolate them from other powerful automobile accessories, particularly electric motors (windscreen wipers,...). Keep the whole length of the cables, which will be adjusted later on.
3.2.2 - Your head unit is only equipped with amplified outputs (speaker driver outputs).
Route the modulator cables coming from the head unit, and the speaker driver cables together, ensuring to isolate them from other powerful automobile accessories, particularly electric motors (windscreen wipers,...). Keep the whole length of the cables, which will be adjusted later on.
3.3 - Wiring the power supply to your IMPULSE 4.320 amplifier
3.3.1 - Route the positive power cable (+) making sure when doing so to route the cable to the opposite side of the cables that you have previously installed to avoid any interference. DO NOT CONNECT THE CABLE YET.
IMPULSE 4.320 AMPLIFIER
User manual
3.3.2 - Get the negative power cable (-). This cable should be as short as possible and ideally shouldn't be any longer than 3ft (1m), to ensure a perfect connection between the amplifier and the chassis of the vehicle. The cable and wire gauge must comply with the table in section 3.1. Find a suitable grounding point, then sand it to remove any traces of paint or other coating in order to optimise the quality of the contact point. Drill a hole in the metal that you have previously sanded, making a hole the same diameter as the screw you are using, making sure that there are no fuel lines, cables or any other sensitive vehicle devices nearby. Solder the ground cable to the wiring harness supplied for your IMPULSE 4.320 amplifier and isolate using heat-shrink tubing (fig. 2).
3.4 - Connecting the input signals to your IMPULSE 4.320 amplifier
You can now start connecting the input/output cables.
3.4.1 - Your head unit is equipped with RCA outputs
Connect the RCAs to the RCA adapter cable supplied (fig. 3). Be careful to respect the polarities (INPUT Left = red, INPUT Right = black or white) and distribution (F=FRONT, R=REAR). Connect the other end to the amplifier's INPUTS panel. Switch the INPUTS LEVEL to LOW (fig. 4).
INPUTS
LEVEL
fig.4 HIGH LOW
fig. 3
IMPULSE 4.320 AMPLIFIER
User manual
21
3.4.2 - Your head unit is only equipped with amplified outputs (speaker driver outputs).
Connect the speaker driver outputs of the head unit directly to the adapter cable supplied (fig. 5) ensuring the polarities are respected. Connect the other end to the amplifier's INPUTS panel.Switch the INPUTS LEVEL to HIGH (fig. 6).
3.5 - Connecting the speaker drivers and remote to your IMPULSE 4.320 amplifier
Solder the REMOTE cable to the wiring harness supplied and isolate using heat-shrink tubing (fig. 7).
Connect the other end of the REMOTE cable to the car radio REMOTE terminal.
fig. 6
fig.7
IMPULSE 4.320 AMPLIFIER
User manual
22
Finally, connect the speaker driver cables to the amplifier, making sure the polarities on the wiring harness supplied are respected (+ with +; - with -) (fig. 8).
WARNING
The speaker drivers or speaker driver kits wired to your IMPULSE 4.320 amplifier must systematically have a minimum impedance of 2 Ohms.
WARNING
In bridged mode, the speaker drivers or speaker driver kits wired to your IMPULSE 4.320 amplifier must systematically have a minimum impedance of 4 Ohms.
The use of equipment with a lower impedance will void the warranty.
To use the IMPULSE 4.320 in bridged mode, and thus double the power available, make sure that connections and polarities are respected as shown below (fig. 9)
fig. 8
fig.9
IMPULSE 4.320 AMPLIFIER
User manual
WARNING
The cable connecting the positive (+) terminal of the battery to the "+" BATT" terminal on the amplifier MUST be fused (ampere rating: 25 amperes) at less than 15^ (40cm) away from the battery of the vehicle.
The connections on the fuse-holder must be fully insulated.
Open the fuse holder, removing the fuse with care. Fix the fuse holder's base.
Cutalength of power cable measuring between 4" and 15" maximum (10 and 40cm). Strip O^25/64n (1cm), then tin.
Screw the cable to the terminal of the fuse holder (battery side). Crimp the power cable to the intended spade terminal and screw to battery terminal.
Strip 0^25/64'' (1cm) from the remaining length of cable, then tin. Screw the cable to the other fuse holder terminal.
Solder the positive (+) power cable to the wiring harness supplied for your IMPULSE 4.320 amplifier (fig. 10)
3.6 - Start-up and checks.
The connection phase is now complete. You must now check that the power supply is correct and that everything is working correctly (head unit/amplifier/speaker drivers). Set the source gain to its minimum. Set the gain on your amplifier to 1/3 of the way. Turn on the various devices. Once all the devices have been turned on, test your installation at low volume.
fig.10
IMPULSE 4.320 AMPLIFIER
User manual
4 - Control panel and connections
fig. 11
INPUTS: These connectors are dedicated to the low-level and high-level signal inputs.
GAIN (FRONT AND REAR): The GAIN knob allows you to adjust the incoming signal to the amplifier. The voltage gain varies between 0.2V and 5V. To optimise the performance of your sound system, you need to apply a maximum of gain as early as possible in the stereo system, and then a minimum of gain afterwards. This knob must be set according to the source volume (line output level).
Start by setting the amplifier gain to its lowest level. Gradually increase the level of the source volume up to 3/4 of the way. Then increase the amplifier gain to the desired maximum listening volume. Turn the volume down if distortion occurs. The FRONT knob controls the front speaker drivers. The REAR knob controls the rear speaker drivers.
+12V: the "+"BATT" power connector is dedicated to the power cable connecting the amplifier to the positive (+) terminal of the battery.
GND: the GND (ground) power connector is dedicated to the negative (-) power cable connecting the amplifier and the vehicle's chassis.
REM: the REM connector connects the amplifier to the source (head unit) via a REM or REMOTE output on the head unit. This enables the amplifier's automatic power on function when the source (head unit) is turned on.
POWER and PROTECT: these LEDs enable you to check if the amplifier is working correctly.
A continuously lit POWER LED means the equipment is working correctly.
If the PROTECT LED is continuously or intermittently lit, the equipment is not working correctly. See troubleshooting section paragraph 5.
INPUTS LEVEL: this switch selects the type of input level (HIGH: high-level / LOW: low-level RCA)
IMPULSE 4.320 AMPLIFIER
User manual
INPUT SELECT: this switch enables channels 1 and 2 to be played through channels 3 and 4.
If you only have one output (one right and one left), you can still amplify the four channels by activating the 1/2 mode.
If you want to use the IMPULSE 4.320 with its independent 4-channel input configuration, select mode 3/4.
If you want to use the IMPULSE 4.320 with a 3-channel configuration, select mode 1 + 2 . Channels 3/4 will then receive the mono signal from channels 1 and 2 to drive your subwoofer.
PHASE (^) : the PHASE knob enables you to adjust the channel phase according to the rest of the installation.
Adjusting the phase of the subwoofer enables the subwoofer output to be in phase with the other speaker drivers. On a theoretical period of a signal, one of the sources can be delayed slightly so that the phase will be perfectly balanced at the listening point.
X-OVER MODE: the crossover mode switch enables you to choose to activate the high-pass filter mode (HPF), the low-pass filter mode (LPF) or the full range mode (FULL) for channels 3/4 or rear channels.
X-OVER FREQ (Hz): this knob controls the cut-off frequency by adjusting the low-pass and high-pass filter levels. The selected value determines the frequency up to which or from which the signal will be cut off.
FRONT CH. (1/2): this switch activates a high-pass filter set at 75Hz for the front channels. Use this setting for solving issues related to door vibrations in vehicles not equipped with vibration dampeners.
5 - Troubleshooting
The state of the various LEDs indicates a malfunction or the source of a malfunction.
Check the possible causes shown below. If, despite these checks, the equipment is still not working correctly, contact your IMPULSE 4.320 amplifier installer or dealer.
| State of LEDs | Presence of sound | Possible cause | Action |
| PROTECT lit red | NO Output short circuit | Turn off the sound system. Check the speaker drivers, their minimal impedance, their connections and the speaker driver cables. | |
| Off NO No power or | poor connection | Turn off the sound system. Check power source is 12V. Check the power cables and their polarity. Check the fuses. | |
| Off NO Overheating Turn off the sound system. Wait for your amplifier to cool down before resuming use. | |||
| Off NO No REM signal | Turn on the sound system. Check there's power on the REM terminal. | ||
| Off NO Fuse | malfunction | Turn off the sound system. Check and replace the fuses if necessary. | |
| POWER flashing green | YES/NO Or intermittent | Grounding defect | Turn off the sound system. Check the connection from the GND terminal to the chassis of the vehicle. |
6 - Technical specifications
| IMPULSE 4.320 4/3/2-channel class D amplifier | |
| High-level input / RCA low-level input | √ |
| CEA power (4 Ohms) 4 x 55Wrms | |
| Power max (2 Ohms) 4 x 80Wrms | |
| Power max (4 Ohms bridged) 2 x 160Wrms | |
| Bandwidth 10Hz - 20KHz (+/- 1dB) | |
| Total harmonic distortion | THD+N < 0.05 % from 0.5 to 50Wrms 4Ω (1 kHz, 22kHz LPF) |
| Total minimum harmonic distortion 0.02 % | |
| Cross-talk (1KHz) > 65dB (Ref. 10 Vout) | |
| SNR (1W/A) > 80dBA | |
| High-pass filter Activatable/deactivatable fixed at 75Hz on channels 1/2 | |
| High-pass/low-pass filter configurable from | 40Hz - 200Hz on channels 3/4 |
| Phase Adjustable 0/180° on channels 3/4 | |
| Full range mode on channels 1/2 and 3/4 | |
| Standby consumption - (Remote ON) 750mA | |
| Fuse ratings 25A (15A if ISO harness) | |
| Protection Short circuit/over-current/reverse polarity/ DC/vol-tage drop/heat protection | |
| Dimensions (LxHxW) | 67/8" x 25/8" x 17/8"(175mm x 66.5mm x 47mm) |
| Weight | (1.2 lbs) 550g |
Conditions of warranty
All Focal loudspeakers are covered by warranty drawn up by the official Focal distributor in your country. Your distributor can provide all details concerning the conditions of warranty. Warranty cover extends at least to that granted by the legal warranty in force in the country where the original purchase invoice was issued.
IMPULSE 4.320 AMPLIFIER
Gebrauchsanleitung
Deutsch
6 - Technical specifications
Before beginning installation, disconnect the negative terminal of the battery to avoid any risk of injury, fire or material damage. (fig. 1). IY - AC IMPULSE 4.320 is only compatible with FOCAL IMPULSE 4.320. It allows a quicker installation of your amplifier thanks to ISO compatibility.
Remove the head unit to get access to the connection panel. Depending of your car model, a complementary adaptive cable could be necessary to upgrade to ISO standard. Ask your FOCAL dealer some advice.
Remove the head unit to get access to the connection panel. Depending of your car model, a complementary adaptive cable could be necessary to upgrade to ISO standard. Ask your FOCAL dealer some advice.
Plug the terminals to your IMPULSE 4.320 corresponding slots.
The connection phase is now complete. You must now check the power supply is correct and that everything is working correctly (head unit/amplifier/speaker). Set the source gain to its minimum. Set the gain on your amplifier to 1/3 of the way. Turn on the audio system. Once all the elements are on, carry out a test at low volume.
Correct elimination of this product.
This marking indicates that within the EU this product should not be disposed of with other household wastes. To prevent any risk to the environment or human health, please recycle them responsibly to encourage the reuse of material resources. To return your used device, please use the return and collection systems available, or contact the retailer where you purchased the product. They can recycle this product safely.
