Replacing speakers in the ŠKODA Octavia A5: a complete guide with photos and diagrams

Replacing speakers in ŠKODA Octavia A5 - a task that many owners face after 5-7 years of operation. Standard acoustics 16 cm broadband speakers (or 13-centimeter ones in basic configurations) loses sound quality over time: wheezing appears at high frequencies, the bass foundation disappears, and the membranes begin to “dust” from wear. But don’t rush to go to a car service center - if you have a minimum set of tools and patience, you can perform the replacement yourself, saving up to 15,000 rubles.

In this guide we will look at all stages of the process: from choosing new acoustics (taking into account the original dimensions and impedance) to the intricacies of removing door cards and connecting to a standard radio. We will place special emphasis on typical mistakes when replacing rear speakers in a sedan and station wagon, which often lead to a short circuit or loss of sound in one of the channels. You will also find a comparison table of popular speaker models compatible with Octavia A5, and instructions for setting up the equalizer after installation.

What speakers are installed in the ŠKODA Octavia A5 from the factory?

Depending on the year of manufacture (2004–2013) and configuration, in Octavia A5 Three types of speakers were installed:

• 🔊 Front widebands: 16 cm (6.5") in doors (equipped Ambiente and above) or 13 cm (5.25") in basic versions. Impedance - 4 ohm, power - 20–30 W RMS.
• 🔊 Rear coaxial: 16 cm (6.5") in rear door shelf (saloon) or side panels (station wagon). May have been absent in basic versions.
• 🔊 Twitter: 2.5–3 cm in the A-pillars (only in top trim levels with the system Sound Package).

The original speakers were manufactured by Visteon (supplier for VW Group) and were marked 1Z0 035 455/456 (front) and 1Z0 035 457/458 (rear). Their key feature is low sensitivity (86–88 dB), which was compensated by the amplifier in the head unit. When replacing with more sensitive models (90+ dB), it may be necessary to adjust the radio settings.

It is important to consider that in Octavia A5 with the system Bolero or Amundsen used active equalizer, which automatically adjusts to the original acoustics. After replacing the speakers, you will have to reset it through the service menu (access code 19283).

How to choose replacement speakers: sizes, power, brands

When choosing a new acoustic system, focus on three key parameters:

1. Size: must match the original. For front doors - 16 cm (hole for speaker - 148 mm), for rear - 16 cm (hole - 140 mm). Seat depth - up to 60 mm.
2. Impedance: 4 ohm (The stock radio does not support 2-ohm speakers).
3. Power: no less 30 W RMS (peak - 150–200 W). More powerful models will require the installation of an amplifier.

Among the trusted brands for Octavia A5 stand out:

Brand	Model	Type	Sensitivity (dB)	Price (per pair), rubles
Focal	Access 165 A1	Coaxial	91	8 500–10 000
Hertz	DCX 165.3	Coaxial	93	12 000–14 000
Alpine	SXE-1725S	Coaxial	88	6 000–7 500
Morel	Tempo Ultra 602	Component	90	18 000–22 000

For bass support without installing a subwoofer, we recommend paying attention to models with polypropylene diffuser (for example, JBL GTO629) or Kevlar suspension (Pioneer TS-A1670F). They cope better with low frequencies in the limited volume of the door card.

Tools and materials for replacing speakers

To dismantle the door cards and install new acoustics you will need:

• 🔧 Tools:
• Plastic mounting spatulas (2–3 pcs.)
• Socket wrenches T20, T25, T30
• Phillips screwdriver PH2
• Pliers with narrow jaws
• Knife or stationery cutter
• 📦 Materials:
• Speakers (front and/or rear)
• Corrugated adapter rings (if the new speakers are smaller than the original ones)
• Heat shrink tubing or electrical tape
• Silicone sealant (for waterproofing holes)
• Double-sided tape or liquid nails (for fixing the speakers)

Pay special attention adapter rings. B Octavia A5 the original speakers are mounted with 4 threaded bolts M5, and many aftermarket models have holes for M6. In this case, you will either need to drill holes in the door panel or use adapter plates.

What to do if the speaker mounting bolts are rusty?

If the bolts do not come out, apply a product like WD-40 to them and leave for 10-15 minutes. Then try to unscrew again, using an impact driver if necessary. As a last resort, the bolt can be drilled with a drill with a diameter of 4.5 mm, but this will require subsequent cutting of a new thread.

Also prepare your work area: you will need a flat surface for laying out the removed parts and good lighting. If you are replacing speakers for the first time, take a photo of the disassembly process - this will help avoid mistakes during reassembly.

Step-by-step instructions: removing the door card

The most labor-intensive stage is dismantling the door trim. B Octavia A5 it is mounted on 8–10 pistons and 2–3 bolts. Procedure:

Disconnect the negative battery terminal

Make sure the glass is all the way up

Remove the decorative trim of the door handle (pry it from the side with a spatula)

Unscrew the bolt securing the handle under the trim (T20 wrench)

Remove the door lock button (carefully pry it off with a screwdriver) -->

Next, follow the algorithm:

1. Remove the plastic speaker casing (it is held in place by 4 latches). Use a spatula to pry it from the bottom and pull it towards you.
2. Unscrew the two bolts securing the door card under the speaker (T25).
3. Gently pull the trim up, starting from the bottom corner - the pistons should come out of the grooves. If the card gets stuck, use two spatulas at the same time.
4. Disconnect the wiring connectors (lighting, speaker, power window control unit). Remember their location!

Important nuance: at the door Octavia A5 passes opening mechanism cable, which is attached to the casing with a plastic clip. Do not pull the card too hard to avoid breaking the cable. If the clamp is broken, it can be replaced with a regular tie.

Installing new speakers: connecting and mounting

Before installing new speakers, check wiring integrity. Often at the door Octavia A5 The wires at the base fray (especially if the car is more than 10 years old). Inspect the insulation and repair it with heat shrink tubing if necessary.

Installation procedure:

1. Pass the new speaker wires through the access hole in the door panel. If the connectors do not match, use crimp terminals or solder.
2. Secure the speaker to the seat. In most cases the stock holes will do, but if the speaker is smaller than the original, use an adapter ring.
3. Connect the wires, observing the polarity (+ to +, − to −). B Octavia A5 positive wire usually red with black stripe, minus - brown.
4. Secure the speaker with bolts (tightening torque - no more than 2.5 Nm, so as not to break the thread).
5. Apply a thin layer of silicone sealant around the edge of the speaker to protect it from moisture.

If you are installing a component system, mount the tweeters in the front pillars, having previously drilled holes with a diameter of 50–60 mm. To lay cables, use standard corrugations along the doorway.

Common mistakes and how to avoid them

Even experienced car owners make mistakes when replacing speakers in Octavia A5. Here are the most common:

• ⚡ Short circuit: Occurs when the polarity is incorrectly connected or the wires are exposed. Always isolate connections!
• 🔊 No sound from one speaker: most often caused by a broken wire in the door corrugation. Check the wiring with a multimeter.
• 🚪 Creaks after installation: The speaker touches the door card. Use foam pads 5–10 mm thick.
• 🔧 Broken thread: Do not exceed the tightening torque of the bolts. In extreme cases, you can install a threaded insert M6×1.0.

Another typical problem is impedance incompatibility. If you install 2 ohm speakers in a 4 ohm system, the radio will overheat. In this case, either replacing the speakers or installing resistors in parallel with each speaker will help (resistance - 4 ohm, power - 10 W).

How to check the speaker for functionality without a radio?

Connect the speaker to a 9-volt battery (briefly!): If the cone moves forward with a “+” connection and backwards with a “−” connection, the speaker is good. Lack of movement or crunching indicates a break or short circuit.

Also don't forget about setting up the radio after replacement. In the menu Sound → Equalizer reset the settings to factory defaults (button Reset), then adjust the bass and treble for the new speakers. If the sound remains dim, check your settings Fader/Balance - sometimes they go astray when the battery is disconnected.

Adjusting the sound after replacing speakers

New speakers require customization, especially if their sensitivity differs from the original ones. In radios Bolero and Amundsen The following options are available:

• 🎛️ Equalizer: Adjust the sliders from 60-100 Hz (bass) and 10-15 kHz (treble). For coaxial speakers, a 3-5 dB boost in the 80-120 Hz region is recommended.
• 🔄 Fader/Balance: Divide the sound between the front and rear speakers (optimal: 60% front, 40% rear).
• 🎵 Loudness: Enable this feature if you listen to music at low volumes - it compensates for the loss of bass.

For fine tuning, use test tracks:

Frequency, Hz	Test sound	What we check
50–80	Deep drum bass	The operation of low-frequency speakers (there should be no bolt pattern)
1 000–3 000	Human speech	Midrange clarity (voice must be intelligible)
10 000–15 000	The ringing of a bell	High frequency quality (there should be no hiss)

If the sound remains unbalanced after adjustment, check speaker phasing. B Octavia A5 front and rear speakers must be connected in phase (plus to plus). To check, turn on a monophonic signal (for example, a drum beat) and walk around the car - the sound should come from the front.

FAQ: Frequently asked questions about replacing speakers

Is it possible to install larger speakers, for example 18 cm instead of 16 cm?

Theoretically, yes, but to do this you will have to widen the hole in the door panel and strengthen the metal, since the standard seat is not designed for an increased diameter. In addition, the 18 cm speakers may touch the window lifter when the glass moves. We recommend sticking to the original sizes.

Do I need to change the speakers in pairs (for example, both front ones)?

Yes, highly desirable. If you replace only one speaker (for example, a broken one), the sound will be unbalanced due to the difference in characteristics. The exception is replacing all four speakers with a new system, where the variation in parameters is minimal.

What tool is needed to remove the rear parcel shelf in a sedan?

To remove the rear shelf in Octavia A5 sedan will need:

• Plastic spatula for removing decorative plugs;
• Socket wrench T25 for unscrewing fasteners;
• Screwdriver PH2 for dismantling plastic clips;
• Pliers for disconnecting the license plate light connectors.

The main thing is not to lose the spring latches that hold the shelf against the rear window.

What should I do if AC hum appears after replacing the speakers?

The 50 Hz background usually occurs due to poor grounding or interference from the on-board network. Check:

• The quality of the radio's grounding (the wire must be screwed directly to the body, without paint).
• Shielding of signal cables (use twisted pair for interconnections).
• The presence of a filter capacitor in the power supply circuit of the radio (for Octavia A5 suitable capacitor 1000 µF × 16 V).

If the problem persists, install surge protector into the power supply circuit of the radio.

Is it possible to connect new speakers directly to the stock radio without an amplifier?

Yes, if their impedance is 4 ohm, and the power does not exceed 50W RMS. Head unit Octavia A5 (even with Amundsen) is capable of delivering up to 20 W per channel, which is enough for most aftermarket speakers. However, component systems or speakers over 60 W will require an external amplifier.