At first glance, it may seem that the process of choosing an amplifier for speakers or a subwoofer in a car is not so simple. But with a brief instruction on “How to choose an amplifier” there will be no problems. The purpose of an audio amplifier is to take a low level signal and convert it into a high level signal to drive the speaker.
They may differ in the number of amplification channels, power and cost. Two and four-channel amplifiers are in greatest demand among car enthusiasts. Now let’s answer in more detail the question of how to choose an amplifier for a car.
Classes of car amplifiers
First of all, I would like to talk about the classes of amplifiers; at the moment there are a large number of them, but we will look at the two main ones, which are very often found in car audio systems. If you are interested in this topic in more detail, at the end of the article there is a video that talks about all the classes of car amplifiers that are now available.
- Class AB amplifier. These amplifiers have very good sound quality and, when connected correctly, are reliable and durable. If an AB class amplifier has a lot of power, then it has very large dimensions; these amplifiers have a low efficiency of about 50-60%, i.e., if 100 W are supplied to them. energy, then a current of 50-60 watts will reach the speakers. The rest of the energy simply turns into heat. AB class amplifiers should not be installed in a closed space, otherwise in the heat it may go into protection.
- Class D amplifier (digital amplifier). Class D is mainly found in monoblocks (single-channel amplifiers), but there are also four and two-channel ones for connecting acoustics. This amplifier has many advantages. Compared to the AB class, with the same power, it has very compact dimensions. The efficiency of these amplifiers can reach 90%, it practically does not heat up. D class can operate stably at low ohm loads. Everything would be fine, but the sound quality of these amplifiers is inferior to class AB.
In conclusion, we will draw a conclusion for this section. If you are chasing sound quality (SQ), then it would be better to use class AB amplifiers. If you want to build a very loud system, then it is better to opt for class D amplifiers.
Tags: connection diagram
Comments 88
Maybe you can tell me, I have a pair of x6c 4 ohm midranges. And a pair of HF MT15 Neo 4 ohms. If I connect the midrange with the HF in parallel, will the impedance be 2 ohms or 4 ohms? The HF is connected via a condenser.
If MF 4 ohms and HF 4 ohms are parallel, then the axis will be 2 ohms. It’s better on 4x xnalnik everything is pokanaleo.
And if the HF is through the condenser, the load also drops?!
Well, it only passes high frequencies. Resistance doesn't seem to do
I see... thanks for the tip
Tell me, I don’t know what crosses to put on the mids of the Alphard LW650 A6, thanks in advance
yes any! In general, I don’t see any point in putting crossovers on mids
how to properly connect Pionner stages to the Auditor amplifier. Can you provide more details for a beginner?
thank you) it just so happens that there are 4 speakers, 2 mids and 2 tweeters, and the amplification is 2 channel :-) as I understand it, it’s all done by crossovers)
Yes ! There are 2 wires coming from the crossover; the amplifier has 4 connectors for connecting them. If I have 4 channels, I could still connect 2 dins!
please tell me) I want speakers to the front, can I connect this way? joxi.ru/47CwUxjKTJAmH78amgI
Well, this is a typical scheme! Of course you can! If tweeters and mids come complete with crosses and they are 4 Ohm, then everything is elementary.
and through the wires PVS. on acoustics!
Why doesn’t your head allow you to control the filters?!
This is what is approved! More preferable in my opinion!
Petya came and silenced everyone)))
food through 2 channels
The midrange and mids are bridged by the existing amplifier, but cut the midrange with a first-order filter and a 30uF capacitor.
a proven combination will be loud and detailed. Hannibal in ZYa 2.5-3l. The door will have to be specifically prepared for the PS8 to play as it should.
check out the latest pattern for today! they said it would be better
Petya came and silenced everyone)))
food through 2 channels
The midrange and mids are bridged by the existing amplifier, but cut the midrange with a first-order filter and a 30uF capacitor.
Number of amplifier channels.
The next important point is the number of channels of the amplifier; this determines what you can connect to it. Everything is simple here, but let’s take a closer look:
- Single-channel amplifiers are also called monoblocks; they are designed for connecting subwoofers, most often they have class D and the ability to operate at low resistance. The settings (filter) are intended for the subwoofer, i.e. if you connect a simple speaker to the monoblock, it will reproduce current bass.
- Two-channel amplifiers, as you already guessed, you can connect a pair of speakers to it. But most two-channel amplifiers can also operate in bridged mode. This is when a subwoofer is connected to two channels. These amplifiers have universal (filter) settings, i.e. they have an HPF switch; this mode reproduces high current frequencies, and when switching to the LPF filter, the amplifier will supply low frequencies to the current output (this setting is necessary for a subwoofer).
- If you understand what a two-channel amplifier is, then with a four-channel amplifier everything is simple, these are two two-channel amplifiers, i.e. you can connect four speakers to it, or 2 speakers and a subwoofer, in rare cases two subwoofers are connected, but we do not recommend doing this. The amplifier will get very hot and may eventually become unusable. Three and five channel amplifiers are extremely rare. Everything is simple here, you can connect two speakers and a subwoofer to a three-channel amplifier, and 4 speakers and a subwoofer to a five-channel amplifier. They have all the filters for tuning the components connected to them, but as a rule, the power of these amplifiers is low.
In conclusion, I would like to say the following about this section. If you are new to car audio and want to get high-quality, balanced sound, we recommend choosing a four-channel amplifier. With it you can connect front speakers and a passive subwoofer. This will give you a high-quality, powerful front, supported by a subwoofer section.
Top 10 Best 4 Channel Car Amplifiers for the Money 2022, Reviews
Amplifier Rockford Fosgate P600X4
The Rockford Fosgate P600X4 is a 4-channel amplifier that delivers 150 watts into all four channels into 2 ohms. Rockford Fosgate (founded in 1973) has a long history of producing and selling the best. And this car amplifier is not without it!
Moreover…
The Punch P600X4 is a bridged car amplifier that is ideal for a 3-way system or a 4-way full-range system with a front stage and rear-channel subwoofers. This means they can be combined for even greater results!
This amplifier features a high-level auto-switching output, making setup much easier. As soon as the voltage passes, it turns on automatically. However, it also has an automatic short circuit, so you won't accidentally burn it.
The best part...
It never reaches very high temperatures thanks to the specially made "aluminum heatsink". It features an optional remote punch level control (PLC2) and comes with an input clip indicator.
So it has enough power to blast your car with music with lots of heavy bass!
pros
- The automatic switching circuit allows for easier and faster setup.
- Allows you to connect with other systems for greater productivity.
- Overload short circuit protection.
- Has a cast aluminum radiator with heat protection.
Minuses
- Not suitable for use with multiple subwoofers.
Pioneer GM-D8604 Class FD
The Pioneer GM-D8604 is an excellent car stereo component that largely meets the requirements, helping you pump out powerful sound from your front and rear car stereo speakers. And with a maximum power of 1200W, it probably does a lot more than you'll ever need.
It has a compact design so it will fit anywhere you decide to place it. Continuous output power (1 W, ≤ 1% THD+N) = 125 W x 4; Continuous output power (4 W, ≤ 1% THD+N) = 100 W x 4.
The best part...
You can easily connect additional speakers or a subwoofer as it is fully pluggable. It is extremely efficient and versatile and delivers high quality sound.
pros
- It is designed to provide constant power output.
- High power (1200 W)
- Its applications are universal as it is fully compatible.
Minuses
- Gets hot after prolonged use.
MTX Audio THUNDER75.4 Thunder Series
MTX Audio THUNDER75.4 is a special offer. You can install it!
Manufactured using a Class A/B topology, you are sure to get a durable product that delivers great overall sound. It features a flexible amplifier that works great with almost any type of car stereo system.
Even better…
It is stable at 2 ohms. It also has an aluminum heatsink that ensures that the product never overheats, and its triple circuit automatic protection system ensures that it never burns out.
Amplifier power.
Power is one of the most important parameters.
First, let's figure out what the difference is between rated and maximum power. The latter, as a rule, is indicated on the amplifier body; it does not correspond to reality and is used as a duct. When purchasing, you need to pay attention to the rated power (RMS). You can view this information in the instructions; if you know the speaker model, you can find the characteristics on the Internet. Now a few words on how to select the power of the amplifier and speakers. Want to know more about choosing speakers? read the article “how to choose car speakers.” Car speakers also have a rated power; in the instructions it is designated as RMS. That is, if the acoustics have a rated power of 70 W. Then the rated power of the amplifier should be approximately the same, from 55 to 85 W. Example two, what amplifier is needed for a subwoofer? If we have a subwoofer with a rated power (RMS) of 300W. The amplifier power should be 250–350 W. Conclusion for the section. A lot of power is, of course, good, but you shouldn’t chase it, because there are amplifiers with less power, but they play much better and louder than inexpensive ones but with some sky-high performance.
Guide to Choosing the Best 4 Channel Car Amplifier
Buying an amplifier to enhance the sound of your car is a great solution. Why? Because everyone loves to listen to good music. However, there are a few things you should take into account before making your final decision. I. We have listed them for you:
Compatibility
You must ensure that the amplifier you purchase is compatible with the ohmic load you intend to connect it to. If you overdrive an amp, you will kill it.
More power is better
You must consider the RMS of your speakers and subwoofers. Increased amplifier power will always add richness and depth to your music without causing distortion.
Quality and heat dissipation ability
The quality of the materials used will largely determine what your amp can and cannot do. Amplifiers without proper heat management can easily burn out or shut down before they cool down, ruining your experience.
Product size
Always check the amplifier's dimensions to ensure it will fit where you want to install it in your vehicle.
Sound quality
Loud usually does not correspond to proper sound output. In any case, you may never use the word “loud.” It is more important to check features such as audio filters, frequency response, total harmonic distortion (THD), sound-to-noise ratio, and possible noise reduction features.
They give you an idea of what kind of sound quality to expect from your car's amplifier.
Overcoming
Bridge offers you the ability to use two channels together in one download. The purpose of this is for each individual channel to produce more energy. For example, if you need one channel to have an output power of 300 W, you can connect 100 W per channel. However, to bypass the amplifier, you will need speakers with twice the minimum load rating.
Installation
Ease of installation is usually better. It also saves you money because you don't have to hire a professional to install the amplifier. Additionally, it is advisable to buy a 4 channel car amplifier that has a detailed installation manual and comes with all the necessary parts for a complete installation.
Prominence of the manufacturer.
When purchasing an amplifier, it is extremely important to pay attention to which manufacturer made it. If you purchase a handicraft product, you can hardly count on good sound quality. It is best to turn to crazy brands that have been on the market for a long time and have already won respect and value their reputation. For example, companies such as Hertz, Alpine, DLS, Focal. Among the more budget ones, you can turn your attention to brands such as; Alphard, Blaupunkt, JBL, Ural, Swat, etc.
Have you decided on the choice of amplifier? The next article that will be useful to you is “how to connect a car amplifier.”
Conclusion: which amplifier should I buy?
It is worth choosing a car amplifier taking into account the features of the audio system. If you need to create a multi-component acoustic system, we can recommend choosing UralPT 8.120. This model can improve the sound of 8 speakers at once.
If the main goal is to save money, then we recommend taking the Pioneer GM-A3702. Despite the low cost (4800 rubles), this amplifier has good power and a smooth frequency response.
Among monoblocks for a subwoofer, we recommend choosing Ural DB 1.2500. It combines high sound quality and compactness. An excellent solution for audiophiles. True, the model costs accordingly. For users who are less demanding on sound, the JVCKS-DR3001D is also suitable.
Connect 4 channel amplifier to 1 subwoofer
Some car enthusiasts install two loudspeakers in a closed box or bass reflex to get powerful and rich bass. Connecting a subwoofer to a 4-channel amplifier is done using a bridge circuit, but each two channels will work as a bridge to their own speaker. It will no longer be possible to connect other speaker systems, but the bass will be exceptionally strong and dense. To organize sound in the car interior, you will need a separate low-frequency unit. The connection diagram for one subwoofer for 4 channels is made with a thick speaker cable in compliance with all reliability requirements. It is best to lay the cable in a corrugated plastic sleeve. The plastic material used to make the hoses does not support combustion so that in the event of a short circuit, fire can be avoided. It is important to secure cable lines with ties to avoid breakage in case of strong vibration.
Instructions for setting up a 4-channel amplifier
Generally, there are three types of amplifier settings you need to know. All of them are given below.
Amplifier setup for four speakers but no subwoofer
So:
- The amplifier's filter/crossover is turned off, and only the speakers reproduce the entire frequency range.
- We put the Crossover Selector switch in the Flat position.
- Level is set to position 8V.
- Bass Boost is set to 0dB.
- Now you will need to increase the volume on the car radio, but not more than 90%.
- The equalizer, if it is not configured, is set to position 0 according to music styles.
- Connect the amplifier and slowly turn the Level clockwise until the end.
Setting up an amplifier for a subwoofer and speakers
So:
- Crossover Selector Front on the amplifier is set to the HP position.
- Phi Pass is set to 60Hz-80Hz.
- Crossover Selector Rear is installed on LP.
- Love Pass is adjustable in the frequency range 65Hz-85Hz.
- Level is set to 0.
- Bass Boost is also at 0dB.
- As with the above-described Level setting, rotate it all the way, but adjust the sensitivity.
Tuning for local gain
So:
- Crossover The selector is set to Flat.
- Turn on HP for tweeters.
- Turn the Hi PASS control to the 250Hz position.
- We adjust the amplifier using the Level rotator.
Note. If the car radio in the car is a new version, adjusting the amplifier may not be necessary. These radios already have automatic Bass Boost settings. If this is the case, then you will just need to adjust the Level rotator.
How to setup
On the front panel of the 4-channel amplifier there are controls and switches that set various parameters. You must make sure that the power indicator is on and the protection alarm is not on before setting up the amplifier. Otherwise, the problem is detected and corrected.
The first stage of setting up a bridge amplifier is to adjust the input level necessary to match the radio. This indicator is set using a regulator or switch. If the radio is connected to high-level inputs, then this control is first set to the 6 V position. Then the lowest input level is set at which the sound remains undistorted when the volume control of the radio is in the high position. After this, the amplifier is configured for all other parameters.
If a subwoofer is connected to the device, you must turn on the low-pass filter, if it is provided for in the amplifier design. The cutoff frequency is initially set at 65-85 Hz and then adjusted more subtly by ear to achieve the desired sound quality depending on the size of the subwoofer and where it is installed.
Some devices have additional controls for more precise adjustments. For example, using an ultra-low-pass filter, you can filter out sounds below 20 Hz to reduce unnecessary load on all speakers and thereby optimize the power consumption of the amplifier.
How to choose a sound amplifier for a car
Due to the fact that the main purpose of the amplifier is to improve sound quality, it is necessary to approach its choice responsibly. In order not to make a mistake with your choice, you need to focus on the following parameters:
- Class;
- number of channels;
- power.
According to the first parameter, all amplifiers are divided into:
- A. has low efficiency, but produces a good sound level with minimal distortion. Consumes quite a lot of energy.
- B. Has high power, but noticeably distorts the sound. They have high efficiency and improved thermal stability.
- C. Sufficiently high efficiency, but produces a distorted signal. Not suitable for high-end acoustics.
- A/B. They have average indicators of the first and second types.
- D. Digital amplifiers, powerful and compact, are capable of producing very clear sound.
Based on the number of channels they are divided into:
- Monoblock. Used to connect a subwoofer operating with a load of 1 or 2 ohms. For larger loads, it is recommended to use a two-channel amplifier.
- Two-channel. Allows you to connect two speakers or a subwoofer.
- Three-channel. You can connect two speakers and a subwoofer.
- Four-channel. Used to connect four speakers, two speakers and two subwoofers or a pair of subwoofers.
- Five-channel. Allows you to connect four speakers and a subwoofer.
There are also six-channel models, but they are very rare and practically never used.
As for power, there is a division into maximum and nominal. You need to choose the latter, because it is the one that indicates the power at 1% distortion.
