Owners Nissan Almera Classic People are often faced with the desire to improve the standard sound of their car's audio system. Factory acoustics in this model, as a rule, have modest characteristics and are unable to convey the full range of modern music. Before you go to the store for new speakers, you need to know exactly the geometric parameters of the seats so as not to waste time on alterations.
The problem is complicated by the fact that in different years of manufacture and trim levels there may be nuances in the design of the door panels and trunk shelf. The wrong choice of speaker size can lead to the fact that they simply will not fit into their normal place, and installing adapter rings or milling plastic will require extra effort and risk damaging the casing.
Front acoustics: dimensions and installation features
Front part of the audio system Nissan Almera Classic is the most important for the formation of a high-quality sound image. The standard solution for front doors is to install speakers with a diameter 16 cm (or 160 mm). This is the most common size in car speakers, making it easy to find a replacement.
However, mounting depth (speaker height) plays a critical role. The standard location for the speakers is behind the door panel, and if you choose a model with a large magnetic system, it may rest against the window regulator or window lift mechanism. It is necessary to measure the available space before purchasing, especially if you plan to install powerful woofers.
For high-quality sound of front doors, the installation of adapter rings is often required, since the standard fasteners may not fit the new mounting holes. It is also worth paying attention to the membrane material: paper diffuser gives a warm sound and polypropylene more resistant to moisture and temperature changes in the door space.
Rear acoustics: nuances of the trunk shelf
Rear speakers in Nissan Almera Classic They are installed not in the doors, but in the plastic shelf of the luggage compartment. This creates its own limitations in depth and diameter. The standard size here is also 16 cm, but the space above the trunk is often limited by the roof structure or the presence of a curtain.
The depth of the speakers for the rear shelf should be minimal. If the speaker is too high, it may rest against the glass when lowering it or simply protrude above the surface of the shelf, disrupting the ergonomics and aesthetics of the interior. It is recommended to choose models with a flat magnet or a special housing design.
Sometimes owners are faced with the problem of the lack of standard holes for speakers in the shelf, since in basic configurations there may be no acoustics at all. In this case, you will need to cut out the holes yourself using a jigsaw and then install decorative grilles.
- Regular
- 16 cm (front)
- 16 cm (rear)
- No acoustics
Technical characteristics and seats
To avoid confusion when purchasing, it is worth checking the exact size data. Below is a table that will help you navigate the parameters of standard places for acoustics for this model.
| Installation location | Diameter(cm) | Depth (mm) | Mounting type |
|---|---|---|---|
| Front door | 16 | up to 65 | Standard brackets |
| Rear shelf | 16 | up to 50 | Self-tapping screws/staples |
| Pad (optional) | 10 | up to 40 | Glue mount |
Please note that a depth of up to 65mm for front doors is a conditional maximum. In reality, it is better to focus on 50-55 mm to ensure a margin for insulating materials. It is also worth considering that in some modifications the standard speakers may have non-standard connectors that will have to be cut and connected to the new models.
What to do if the speaker does not fit in depth?
If the speaker you choose is too deep, you can try removing the magnet system (if it's removable) or using a thinner cabinet. Sometimes cutting out part of the metal door panel helps, but this requires care to avoid damaging the window regulator mechanisms.
Installation methods and the need for adapters
Direct replacement of speakers without additional tools is not always possible. Often the standard holes do not match the mounting lugs of new speakers. In this situation, they become indispensable adapter rings or adapter plates. They are made of plastic, plywood or MDF and are attached to standard places.
The use of adapters allows not only to solve the problem of fastening, but also to improve sound insulation. The tight fit of the ring to the metal of the door prevents rattling of the plastic and improves the response of low frequencies. This is especially true for the front doors, where vibrations are strongest.
It is also important to take care of moisture protection. Door speakers are susceptible to condensation and moisture from outside. It is recommended to use special moisture-proof caps or apply sealant to the joints of the adapter rings with metal.
☑️ Instructions for installing speakers
⚠️ Attention: Before starting work on dismantling the door cards, be sure to disconnect the negative terminal of the battery to avoid a short circuit in the wiring of the power windows and central locking.
Selection of power and resistance
When choosing speakers for For Nissan Almera Classic, it is important to consider not only the dimensions, but also the electrical parameters. A standard radio usually produces about 45 W per channel, so there is no point in installing speakers with a power of 100-150 W without an external amplifier - they simply will not play at full power.
The optimal choice would be speakers with a rated power of 50-80 W and a sensitivity above 90 dB. High sensitivity will allow you to get loud and clear sound even from a weak standard radio. The resistance (impedance) should be 4 ohms, which is the standard for most automotive heads.
If you plan to install an external amplifier, you can consider more powerful models with peak power up to 150 W. However, remember that for stable operation of such a system, high-quality wiring and, possibly, additional sound insulation of the doors will be required.
When purchasing speakers, pay attention to the sensitivity markings. The higher this indicator (for example, 92 dB versus 88 dB), the louder the speaker will play at the same amplifier power.
Sound insulation as the basis for high-quality sound
Even the most expensive speakers will not be able to reveal their potential in a “bare” metal door. Soundproofing is a mandatory step in upgrading your audio system. It solves two problems: it removes extraneous noise from the road and turns the door into a three-dimensional housing for the speaker.
Effective sound insulation usually consists of two layers: vibration insulation (bitumen sheets) and sound absorber (foam materials). The vibration insulation is attached to the inner metal surface of the door, and the sound absorber is attached to the door card. This significantly reduces metal resonance and improves bass.
Don't forget about the rear shelf. If you install speakers there, it also needs to be treated with vibration isolation to eliminate plastic ringing and vibration at high volumes. This is especially important since the shelf is located close to the car body.
High-quality sound insulation of doors increases the efficiency of speakers by 30-40%, making the sound denser and more detailed, even when using inexpensive acoustics.
Common mistakes when replacing acoustics
Many owners Nissan Almera Classic make typical mistakes when trying to save time or money. One of the main mistakes is ignoring the polarity of the wires. If you confuse the plus and minus, the phasing of the speakers will be disrupted, which will lead to a dip in the low frequencies and a “blurry” sound.
Another common problem is using wires that are too long or too short. A long wire dangling inside the door can get stuck in the window regulator mechanism or rub against sharp metal edges. The short wire is stretched, which eventually leads to broken contacts.
It is also not recommended to use cheap twist-on connectors. Over time, oxidation of the contacts will cause signal loss or noise. It is better to use reliable terminal blocks or soldering followed by heat shrink insulation.
How to check speaker polarity?
An easy way is to use a 1.5V battery. Connect the wires to the speaker terminals. If the diffuser moves outward when connected, the polarity is correct. If inside, swap the wires.
FAQ: Answers to popular questions
Is it possible to install larger speakers, such as 17 cm?
Installing 17 cm (170 mm) speakers in Nissan Almera Classic possible, but will require serious modification of the seat. The standard hole is designed for 16 cm, so you will have to expand it with a milling cutter or jigsaw. The risk of conflict with the window lifter mechanisms also increases due to the changed center of gravity and dimensions.
Do I need soundproofing if I'm just replacing speakers?
Preferably. Without soundproofing, the effect of the new speakers will be minimal. The metal door acts as a resonator, distorting the sound and adding extraneous noise. Basic vibration isolation treatment will greatly improve your music experience.
What connectors are used in Nissan Almera Classic?
Standard connectors often have a non-standard shape. When purchasing speakers, it is better to choose models with universal connectors or be prepared to resolder the wires. Often you have to use adapters that are sold in specialized car audio stores.
Is it possible to install a subwoofer in the trunk shelf instead of speakers?
Yes, this is a popular solution. Instead of a pair of rear speakers, you can install one powerful subwoofer with a diameter of 16 cm or even larger (if it is possible to expand the hole). This will give significantly deeper bass, but will deprive the car of the rear stage.
⚠️ Attention: Carefully check the depth of the magnet before purchasing, as there is critically little free space above the trunk in the rear parcel shelf of the Nissan Almera Classic.
Selecting and installing speakers in Nissan Almera Classic is a process that requires attention to detail. Properly selected dimensions, high-quality sound insulation and proper installation will provide you with excellent sound for many years. Take your time, measure all parameters twice, and the result will pleasantly surprise you.