Ali so zvočniki 2 Ohm 6×9 dobri? Kaj iskati.
Številni proizvajalci avtomobilskega zvoka imajo v svoji ponudbi 2-ohmske zvočnike 6×9 in trdijo, da lahko podvojijo izhod vašega ojačevalnika.
Toda ali so 2-ohmski zvočniki 6×9 dobri? Ugotovimo.
Na splošno so 2-ohmski avtomobilski zvočniki zelo dobri in imajo eno prednost pred 4-ohmskimi zvočniki, in sicer je njihova glasnost lahko večja kot pri 4-ohmskih zvočnikih. Na žalost je višja glasnost povezana z zmanjšano kakovostjo zvoka. 2-ohmski zvočniki zahtevajo tudi veliko močnejše ojačevalce
V spodnjem članku boste izvedeli, kako dobri so zvočniki, ko proizvajalci dodajajo ohme, in ali vplivajo na zmogljivost in moč zvočnikov, zlasti 6x9.
Videli boste tudi primerjavo različnih vrst, da vidite, kateri zvočniki so boljši glede na 6x9, 6,5-palčne zvočnike, koaksialne in komponente.
Na koncu vam bom pokazal, kako ojačevalniki delujejo z 2-ohmskimi zvočniki in kako jih pravilno povezati.
Razumevanje ohmov na avtomobilskih zvočnikih
Preden gremo globlje, morate najprej razumeti, kako ohmi, upor in zvočniki delujejo skupaj.
To je ključnega pomena za določitev, ali ohmi igrajo vlogo pri kakovosti in glasnosti zvočnikov ter razlike med zvočniki z manj in višjimi ohmi.
Ne da bi se preveč poglabljali v podrobnosti in poskušali ohraniti stvari preproste, da bi razumeli impedanco, kar zadeva zvočnike, pomeni, koliko obremenijo ojačevalnik, zvočniki pa to dosežejo z uporom.
Impedanca zvočnikov se meri v ohmih, število ohmov zvočnika pa pove, kako glasen je in kako vpliva na kakovost zvoka.
To je zato, ker bo zvočnik z nizko impedanco (v našem primeru 2 ohma) imel več toka skozi njega. Zato bo obremenitev ojačevalnika manjša; vendar pa bo ojačevalnik v zvočnik potisnil preveč moči.
Nasprotno velja za zvočnike z višjo impedanco in te vrednosti so lahko vse višje, vendar za naše namene avtomobilska avdio oprema in zvočniki običajno segajo od 2 ohmov do 8 ohmov.
Če je vse nad tem, gledate velike avdio sisteme, ki običajno niso zasnovani za uporabo v avtomobilih.
Več ohmov kot ima zvočnik, večji upor bo imel, kar običajno pomeni, da bo zvočnik nekoliko mehkejši od zvočnika z 2 ohma (to je zato, ker se bo ojačevalnik moral potruditi, da pošlje moč skozi zvočnike).
Zvok, ki ga proizvajajo zvočniki z višjo impedanco, pogosto ustvarja višjo kakovost zvoka.
Glede učinkovitosti zvočnikov
Ena stvar, ki je mnogi ljubitelji avtomobilskega zvoka ne upoštevajo, je učinkovitost zvočnikov. Čeprav tega ne bom obravnaval podrobno, bom na kratko poudaril njegove glavne značilnosti.
Visoko učinkoviti zvočniki s tipično več kot 90 dB so združeni v zvočnike višje kakovosti. Proizvajali bodo boljše in glasnejše zvoke z manjšo močjo kot zvočniki z nižjo oceno učinkovitosti.
Po drugi strani pa bodo zvočniki z visoko učinkovitostjo dražji od zvočnikov z nizko učinkovitostjo. Vsekakor morate razmisliti o učinkovitosti zvočnikov, ne glede na ohme in nazivno moč zvočnika (vati), če resnično želite kupiti zvočnike vrhunske kakovosti.
Na primer, lahko imate 4-ohmski zvočnik z visoko učinkovitostjo, ki bo proizvedel glasnejši in boljši zvok kot 2-ohmski zvočnik z nizko učinkovitostjo, ki bo morda celo dražji. Je smiselno? Ne glejte enega ločenega parametra, temveč celotno tehnično specifikacijo.
Upoštevanje 2-ohmskih zvočnikov
Zadnja stvar, ki jo morate upoštevati, preden začnete primerjati zvočnike in avdio opremo, je, zakaj sploh obstajajo 2-ohmski zvočniki in ali jih lahko uporabljate v svojem avtomobilu.
Mnogi ljudje pravijo, da so 2-ohmski zvočniki glasnejši od podobnih zvočnikov z višjo oceno impedance, in to je dejstvo, vendar le ko gre za podobne zvočnike .
To je zato, ker ima ojačevalnik, ko deluje z nižjo impedanco, manjši upor pri pošiljanju moči zvočnikom in s pošiljanjem več omogoča zvočnikom, da predvajajo z večjo glasnostjo.
Višja glasnost ne pomeni nujno tudi dobre kakovosti zvoka in glede na 2-ohmske zvočnike, ki jih kupite, lahko slišite razliko.
Če pa nimate glavne enote ali ojačevalnika, ki bi zmogel 2-ohmske zvočnike, ali če zvočnike nepravilno povežete z ojačevalnikom ali glavno enoto, je to lahko uničujoče za vaš avtozvočni sistem.
Če ima vaš vir napajanja višjo stopnjo nazivne impedance in skozenj potisnete 2-ohmske zvočnike, bo vaš ojačevalnik ali glavna enota več kot verjetno pregorela.
Ali so 2-ohmski zvočniki 6×9 boljši od 6,5-palčnih zvočnikov?
Zame je »boljši« relativen izraz in se lahko zelo razlikuje glede na posameznika in sam obstoječ avtomobilski avdio sistem.
Ko primerjate zvočnike, morate najprej upoštevati različne dejavnike, preden razjasnite to vprašanje. V našem primeru predvidevam, da sta zvočnika 6×9 in 6,5-palčni bodisi koaksialni bodisi komponentni zvočnik.
V preteklosti je bilo bolj koristno kupiti 6,5-palčni komplet zvočnikov namesto 6x9, ker je imel 6x9 slabšo zmogljivost.
Danes so časi drugačni in razlika v dizajnu ni več tako kritična. Veliko zvočnikov 6x9 je boljših od nekaterih 6,5-palčnih zvočnikov.
Odvisno je od znamke in tega, koliko ste pripravljeni plačati, vendar lahko najdete 6x9, ki so enako dobri kot 6,5-palčni zvočniki in obratno.
S tehnične plati imajo zvočniki 6×9 večjo površino, kar pomeni, da lahko od zvočnika dobite več dinamike ali srednjih basov z enako močjo, kot bi jo iz 6,5-palčnega zvočnika.
2 Ohm 6×9 komponentni proti koaksialnim zvočnikom. Kateri so boljši?
Kot že veste, je edina prava prednost 2-ohmskih zvočnikov ta, da so lahko glasnejši od zvočnikov z višjimi vrednostmi impedance.
But also, you have to consider speaker efficiency; that is where you will find the actual quality of sound directly proportional to volume.
Component speakers are designed to handle specific frequency ranges depending on each of the independent drivers. They are driven by separate crossovers, which send the correct frequency range to the drivers.
In terms of coaxial speakers, they typically have all the drivers mounted onto one speaker, and no crossover is needed because there should be one built into the drivers themselves.
Coaxial speakers are great because they offer an easy installation and require no knowledge of drivers and frequencies.
However, the caveat comes in the form of sound quality. The audio quality of component speakers will always be better when compared to coaxial speakers because they are made and designed with specificity in mind.
Because all the drivers are placed on one speaker mount, you may have conflicting air pressure and sound waves that perhaps can’t move freely enough in extreme cases.
This may not be audible, but you will notice a difference if you compare coaxial and component speakers side by side.
The only advantage of a 2-ohm 6×9 over coaxial speakers is the volume, and this will be only beneficial if your amplifier or head unit is designed to handle low impedance.
Can I Use a 2 Ohm Speaker on a 4 Ohm Amp?
As a general rule, you should not install 2-ohm speakers that are powered just by a head unit.
The amplifier in your head unit is small, and in this regard, it can only handle a certain amount of power and load. Typically most head units will have an impedance load of between 4 ohms to 8 ohms, and your car will have the correct speakers set up accordingly. Hence, your amplifiers or speakers will sustain no damage.
Things are different when installing a separate car amplifier, but the amplifier’s power is also important.
Now your speakers can have different impedance values than your amplifier. Depending on how your speakers are connected to your amplifier (series or parallel), ohms law will change their impedance value.
I won’t go over Ohms’s law because that is beyond the scope of this article, but I will give you a simple understanding of how this process works.
If you connect a 2-ohm speaker to the left channel and a 2-ohm speaker to the right channel, the speakers are in series and deliver 2 ohms of resistance per channel where each channel’s impedance is 4 ohms.
This combination is not good because you have to remember the lower the ohms, the lower the resistance, which means that the amp will be powering the speaker with a lot more current than it is designed for. Hence it will overheat, and it can get damaged, blowing fuses and probably ruining the circuitry inside.
Can I Hookup 2 2ohm Speakers to One Channel?
As you already know, you should not connect individual 2-ohm speakers to any amplifier that has a rated higher impedance level, but what happens if you decide to wire two 2-ohm speakers to one channel?
If you connect two 2-ohm speakers to one channel in the amplifier, you have to make sure you are running them in a series.
If low impedance speakers are connected in parallel, the total impedance of having two 2-ohm speakers will result in an impedance rating of only 1-ohm.
That scenario is even worse than having just one 2-ohm speaker connected to the amplifier channel.
In our case of using two 2-ohm speakers, the result will amount to 4 ohms, which is suitable for your 4-ohm head unit.
Hence you will be able to have two 2-ohm speakers wired in series on each channel of your 4-ohm head unit. For a better understanding of serial and parallel connections, watch this short video below:
Do I Need an Amplifier for My 2-Ohm 6×9 Speakers?
If your car stereo does not work with an impedance rating of 2 ohms or your 2-ohm speakers are not wired correctly, you will definitely need an aftermarket amplifier.
Depending on your needs, what you want, and how much money you have, the amplifier you can choose will vary greatly.
The most important thing to remember is that you will need to either purchase an amplifier that supports the impedance rating of all your speakers when they are calculated within the circuit of your amplifier.
Otherwise, depending on how many speakers you have and their impedance ratings, you will need to wire them correctly (in series or parallel) depending on how your car audio system layout is or how you would like it to be.
Can I Wire 2-Ohm Speakers in Front and 4-Ohm Speakers in the Back of the Car?
Yes, you can, and this method can apply to both the head unit or your aftermarket amplifier.
If your amplifier or head unit has an impedance rating of 2-ohms, there is nothing out of the ordinary you need to do in terms of wiring up your speakers.
If the impedance rating of your speakers is higher than that of your power source, no damage will occur. The only thing that will happen is that the amplifier will probably not drive the 4-ohm speakers as loud as possible, but no harm will come to the speakers or the power source.
Regarding the 2-ohm speakers, you will have to wire them in series on each channel. This means you need two 2-ohm speakers for both the left and right channels of your head unit or amplifier.
Hence it is up to you to decide whether you want to purchase two additional 2-ohm speakers or a mono amplifier, but for practicality’s sake, you would be better off either purchasing different speakers or another set of 2-ohm speakers.
Zaključek
2-ohm speakers, although louder than other speakers, are not the greatest in terms of sound quality and concerning your audio equipment.
Louder is not always better, and if your power source (head unit or amplifier) does not have a 2-ohm impedance rating or you do not wire the 2-ohm speakers correctly to your power source, then it is more than likely going to overheat and blow.
When picking up speakers, you should consider speaker efficiency rather than anything else when it comes to the volume and quality of your audio, and this applies to both coaxial and component speakers.
Hopefully, this article will make you think twice before running out and purchasing 2-ohm speakers that manufacturers say can boost or double your amplifier’s output.
Source list
Understanding Speaker Impedance
Why Is It Bad If Speaker Impedance Is Too Low? Your Question Answered
Component Vs. Coaxial Speakers:Differences, Pros/Cons, And Which Is Best