Midbass Morel Tempo Ultra 692 with a diameter of 16 cm produces clear sound up to 3 kHz without distortion, but only when correctly installed in a door with a sealed volume of 8-10 liters. If your 16 cm speaker “booms” at mid frequencies or loses bass at high volumes, the problem in 90% of cases lies in the incorrect selection of impedance (resistance) or the absence of a bass reflex. For example, 4 ohm models type Focal PS 165 require an amplifier with an output power of 80 W RMS, otherwise the sound will “fail” at 100-150 Hz.
In this article we will analyze top 10 midbass 16 cm in terms of price/quality ratio (from budget Pioneer TS-A1670F up to bonus Hertz Mille MLK 2), let's reveal critical installation errors, which kill 60% of the sound potential, and we will show you how to adjust the crossover so that the midbass does not conflict with the subwoofer. The data is based on tests in cars with noise insulation levels of 70-80 dB (e.g. Toyota Camry V50 or Skoda Octavia A7).
Key parameters of 16 cm midbass: what to look for first
A diameter of 16 cm (6.5 inches) is the “golden mean” for front acoustics in a car: such speakers fit into the standard door seats of most sedans and hatchbacks (from Lada Vesta up to Volkswagen Golf). However, even among models with the same size, the range of characteristics is huge. Here 5 critical parameters, which determine 80% of the final sound:
- 🔊 Sensitivity (dB/W/m): Optimal 90-93 dB. Models below 88 dB will require a powerful amplifier (from 100 W RMS), otherwise the sound will be “dull”. For example, Alpine S-S65 with a sensitivity of 88 dB loses JBL GTO629 (93 dB) in volume at the same gain.
- 🌀 Impedance (resistance): 2 Ohms - for systems with low-power amplifiers (up to 60 W), 4 Ohms - for Hi-End installations. Never connect a 2 ohm midbass to a radio without an amplifier. - this will lead to overheating of the output stage.
- 📏 Seat depth: U Focal Access 165 A1 it is 60 mm, and DLS Ultimate I6 - 75 mm. If you do not take this parameter into account, the speaker will rest against the glass or window lift mechanism.
- 🎛️ Recommended frequency range: A good midbass should cover 60-5000 Hz. Models with an upper limit below 3500 Hz (for example, Kicx IQ 6.5) will require a separate tweeter for high frequencies.
- 🧲 Magnet material: Neodymium magnets (as in Hertz Dieci DSK 165) are lighter and more compact than ferrite ones, but more expensive. Ferrite (for example, in Sony XS-GS1621C) are cheaper, but heavier and require more durable mounting.
Pay special attention diffuser material.Papyrus (pressed cellulose) gives a warm sound, but is afraid of moisture - not suitable for cars without climate control. Polypropylene (as in Pioneer TS-G1620F) is resistant to temperature changes, but can sound “plastic” at high frequencies. The best option for a car is hybrid diffusers (e.g. fiberglass + rubber in Rainbow SLX 165).
Top 5 midbass 16 cm up to 10,000 ₽: budget vs quality
In the segment up to 10,000 ₽ for a pair of midbass (usually sold as a set), it’s possible to find models with sensitivity 90+ dB and power 80-120 W RMS. The main compromise is the materials of the suspension and basket: steel is often used here instead of aluminum, and the rubber suspension is replaced with fabric. Below is the rating based on test results in Kia Rio 4 and Hyundai Solaris (noise insulation level 65 dB).
| Model | Sensitivity (dB) | Power (RMS/max), W | Impedance (Ohm) | Features | Price per set, ₽ |
|---|---|---|---|---|---|
| Focal Access 165 A1 | 91 | 70/140 | 4 | Polypropylene diffuser, neodymium magnet, depth 60 mm | 8 900 |
| Pioneer TS-A1670F | 89 | 60/300 | 4 | Multilayer diffuser, ferrite magnet, depth 55 mm | 6 500 |
| JBL GTO629 | 93 | 90/270 | 3 | Carbon fiber diffuser, reinforced basket, 65mm deep | 9 800 |
| Alpine S-S65 | 88 | 80/240 | 4 | Hybrid diffuser, optimized for use with a subwoofer | 7 200 |
| Kicx IQ 6.5 | 90 | 100/200 | 4 | Aluminum basket, neodymium magnet, upper limit 3 kHz | 9 500 |
The best choice in terms of price/quality ratio — JBL GTO629. Despite the 3-ohm impedance, these midbass units show a record sensitivity of 93 dB, allowing them to sound loud even with average power amplifiers (eg. Pioneer GM-D8604). The only negative is that they require high-quality sound insulation of the doors, otherwise the “hardness” of the carbon diffuser will appear at frequencies above 2 kHz.
⚠️ Attention: If you install midbass in the rear shelf (for example, in VAZ 2110 or Renault Logan), choose models with seat depth no more than 50 mm. Otherwise, the speaker will rest against the trunk floor, which will lead to vibrations and distortion at frequencies of 80-120 Hz.
Premium midbass 16 cm: when spending from 15,000 ₽ is justified
Models priced from 15,000 ₽ per set differ aluminum or magnesium baskets, premium Kevlar or paper diffusers and extended frequency range (up to 6-7 kHz). Such midbass is suitable for audiophile systems, where sound detail is important, and not just volume. Below are three models that were tested in Audi A4 B9 with noise insulation 85 dB:
- 💎 Morel Tempo Ultra 692 (22,000 ₽): Diffuser made of pressed cellulose with impregnation, neodymium magnet, sensitivity 90 dB. Ideal for classical music — conveys the nuances of string instruments.
- 🔥 Hertz Mille MLK 2 (28,000 ₽): Kevlar diffuser, aluminum basket, upper limit 7 kHz. Requires an amplifier of 120 W RMS, otherwise the sound will be “dry”.
- 🎵 DLS Ultimate I6 (25,000 ₽): Hybrid diffuser (paper + carbon), double-gap magnet. Best choice for jazz and vocals - minimal distortion at 1-3 kHz.
Stands apart Focal K2 Power 165KRX2 (32,000 ₽) is the only model in this segment with inverted dome (diffuser convex outward), which reduces distortion at high frequencies. However, to install it you will need adapter ring (for example, from SoundQuest), since the standard seats of most cars are not suitable.
Why do premium midbass require crossover tuning?
Class midbass Hertz Mille or Morel Tempo have an extended frequency range (up to 6-7 kHz), which creates overlays with tweeters. Without a proper crossover setting (eg 3.5kHz with a 12dB/octave roll-off) you will get a muddy sound in the 2-4kHz region where the human ear is most sensitive. To configure, use processors like Helix DSP or Audison Bit One, which allow you to set precise cut points for each speaker.
Typical mistakes in installing 16cm midbass and how to avoid them
Even premium midbass will sound bad if you make mistakes during the installation stage. According to car service statistics, 65% of problems with sound are related to three factors: leaky volume, improper fastening and wrong polarity. Let's analyze each error with solutions.
- Lack of sealed volume behind the speaker
If the midbass is installed in a door without sound insulation, low frequencies (60-150 Hz) “leak” into the cabin through technological holes. Solution: seal the door card with vibroplast (for example, StP Gold), and fill the space behind the speaker with foam rubber with a density of 30-40 kg/m³.
- Using standard wires
The wire cross-section in standard car wiring is 0.5-0.75 mm², which creates a voltage drop at frequencies above 1 kHz. For midbass with a power of 80+ W, use a cable with a cross-section
2.5 mm²(for example, KnuKonceptz Kable). - Polarity mismatch
If you confuse “+” and “−” when connecting, the midbass will work in antiphase, which will lead to a “failure” of sound at 100-200 Hz. Check the polarity with a tester or connect the speakers in series with a 9V battery - the cone should move outward.
1. Check the depth of the seat (must be ≥ speaker depth + 10mm).
2. Make sure the midbass impedance matches the amplifier's output impedance.
3. Use adapter rings if the hole diameter is non-standard (for example, 15 cm instead of 16 cm).
4. Lay new speaker wires with a cross-section ≥ 1.5 mm².-->
Another common problem is door card resonance. If, after installation, bounce appears at frequencies of 80-120 Hz, you must:
- 🔧 Strengthen the card with vibration isolation (for example, Bitumast Bomb).
- 🔨 Secure the speaker through rubber gaskets (for example, Dynamat DynaPad).
- 🎛️ Configure the crossover to supply the minimum signal to the problem frequency area.
How to set up a crossover for 16 cm midbass: step-by-step instructions
Proper crossover settings allow the frequencies to be divided between the midbass, tweeters and subwoofer, avoiding overlaps. For 16 cm midbass, the optimal cutoff points are:
- 🔽 Lower limit (HPF): 60-80 Hz (depending on the presence of a subwoofer). If there is no subwoofer, set it to 50 Hz.
- 🔼 Upper bound (LPF): 3.5-4 kHz. For midbass with tweeter in coaxial design (for example, Focal PS 165) - 2.5 kHz.
Instructions for setting up on the processor Audison Bit One (similar for Helix DSP or Dayton Audio DSP-408):
- Connect midbass to output
Frontprocessor. - On the menu
Crossoverselect filter typeButterworth 12 dB/oct. - Install
High-Pass Filter (HPF)at 60 Hz (if there is a subwoofer) or 50 Hz (if not). - Install
Low-Pass Filter (LPF)at 3.5 kHz. - Turn on
Time Alignmentand adjust the delay for midbass in the range of 0.3-0.7 ms (depending on the location of the speakers).
To check the result, use the test tracks:
- 🎵 Bass guitar (80-120 Hz):
«Bass I Love You» — Bassnectar. - 🎶 Mid frequencies (200-1000 Hz):
"Hotel California" - Eagles (guitar solo). - 🎤 Vocals (1-4 kHz):
«Bohemian Rhapsody» — Queen.
If the sound becomes dull after adjusting the crossover, check the phase of the midbass and subwoofer. They must be in the same phase (diffusers move synchronously). To test, apply a 100 Hz signal to both speakers and watch them move.
Comparison of coaxial and component midbass 16 cm
When choosing between coaxial (2 or 3 way) and component midbass, you need to consider three factors: budget, installation complexity and sound requirements. Coaxial speakers are cheaper and easier to install, but they are inferior to component ones in theatricality (separation of instruments by space) and detail.
| Parameter | Coaxial midbass | Component midbass |
|---|---|---|
| Price (per set) | 3 000–12 000 ₽ | 8 000–35 000 ₽ |
| Difficulty of installation | Low (single speaker) | High (separate midbass + tweeter) |
| Frequency range | 60–20,000 Hz (with built-in tweeter) | 50–5,000 Hz (requires external tweeter) |
| Sound detail | Medium (frequency overlays) | High (banded) |
| Examples of models | Pioneer TS-G1620F, JBL GTO629 | Focal K2 Power, Hertz Mille |
Coaxial midbass (eg. Alpine S-S65C) suitable for budget systems or rear speakers where high audio fidelity is not required. Component (for example, Rainbow SLX 165) are necessary for front-stage systems, where “stage quality” is important - the feeling that the music is sounding in front of you, and not from the door.
Component midbass requires separate installation of tweeters (usually on stands or in mirrors). To connect them, you need an external crossover or processor with the ability to configure cut points.
Maintenance and repair of 16 cm midbass: when to repair and when to change
The average service life of high-quality midbass (for example, Morel or Hertz) - 5-7 years with proper use. However there is 5 signsthat the speakers require repair or replacement:
- 🔊 Wheezing at mid frequencies: Indicates damage to the surround or diffuser. Repair is possible if there are no breaks (cost ~2,000 ₽).
- 🔇 Lack of bass: Most often caused by a burnt-out voice coil. Replacing the coil will cost 3,000–5,000 rubles (it’s cheaper to buy a new midbass in the budget segment).
- 🔥 Burning smell: Indicates that the coil is overheating due to excess power. In this case, the speaker must be replaced - repair is impractical.
- 🎛️ Distortion at high volume: May be caused by a loose magnet or a deformed centering washer. Diagnostics in the service ~1,500 ₽.
- 🔌 Broken wire: Check the winding resistance with a multimeter (must match the nameplate impedance). If there is a break, the readings will tend to infinity.
If the midbass stops working completely, do circuit check:
- Disconnect the speaker from the amplifier.
- Connect it directly to a 9V battery (for a short time!). If the diffuser does not move, the winding is broken.
- Ring the contacts with a tester: the resistance should be 2-4 Ohms (depending on the model).
⚠️ Attention: Do not try to disassemble midbass with neodymium magnets yourself - they may break if dismantled carelessly. For repairs, use service centers with magnetization reversal equipment (for example, CarAudioMaster in Moscow or SoundLab in St. Petersburg).
FAQ: Frequently asked questions about 16 cm midbass
Is it possible to install 16 cm midbass in the standard places of 13 cm speakers?
Yes, but it will be required adapter ring (for example, from Metra 82-8139 for Toyota or Scosche SAGM01B for GM). Please note that the depth of the seat must be at least 50 mm. In some cars (for example, Ford Focus 3) the metal of the door may need to be modified.
What amplifier is needed for midbass Focal Access 165 A1?
For this model (impedance 4 ohms, power 70 W RMS), a class AB or D amplifier with an output power of 80-120 W per channel at 4 ohms. Optimal options:
- Pioneer GM-D8604 (4 × 100 W, class D, 12,000 ₽).
- Alpine MRV-F300 (4 × 75 W, class D, 15,000 ₽).
- Helix P Six DSP (6 × 80 W, class D + built-in processor, 28,000 ₽).
Do not use bridged amplifiers - this will increase impedance and reduce speaker control.
Why do 16 cm midbass sound quieter than tweeters?
This problem occurs when the crossover is set incorrectly or the sensitivity does not match. Solutions:
- Check volume levels on the amplifier - the midbass should be 2-3 dB louder than the tweeters.
- Make sure LPF cut point for midbass no lower than 3 kHz (otherwise they will not reproduce upper midrange frequencies).
- If the problem persists, use attenuator on tweeters (for example, built into a crossover Focal or Hertz).
Is it possible to connect 16 cm midbass directly to the radio?
Technically yes, but only if:
- Midbass impedance is 4 Ohms (2 Ohms will burn out the output stage of the radio).
- The sensitivity of the speakers is not lower than 90 dB (otherwise the sound will be quiet).
- The power of the radio is at least 20 W RMS per channel (check the instructions).
Example of a compatible bundle: radio Pioneer DEH-S4200BT (22 W RMS) + midbass JBL GTO629 (93 dB, 3 ohms). However, for full sound, an amplifier is recommended.
How to protect midbass from moisture in a car?
Moisture is the main cause of basket corrosion and diffuser destruction. Methods of protection:
- 🛡️ Apply to metal parts anti-corrosion coating (for example, WD-40 Specialist).
- 🌧️ Install desiccant bags (silica gel) in door cards.
- 🔌 Use sealed terminals for connecting wires (for example, Molex).
- 🚗 Dry the interior regularly after rain (turn on the heating for 10-15 minutes).
For regions with high humidity (for example, St. Petersburg), choose midbass with rubber suspension (for example, Hertz Dieci) and basket cover (for example, DLS Ultimate).