Is more ohms better? I understand that a headphone with more ohms needs more power because it has more resistance but does that make the headphones better?
Related Forum Threads
- Measurements of Audio-Technica ATH-AD700 Last post on 5/29/12 at 11:12pm in Headphones (full-size)
- HD800, T1 or LCD-2 on a small system Last post on 5/27/12 at 7:35pm in Headphones (full-size)
- HD 598's? Last post on 2/10/12 at 8:40am in Headphones (full-size)
- AKG K271 MKII's or Sennheiser HD25's? Last post on 1/10/12 at 10:13pm in Headphones (full-size)
- HD800 cable recommendation Last post on 4/5/12 at 10:56pm in Headphones (full-size)
Last edited: 8/18/12
- Diy Beginners GuideLast edited: 7/22/13
- Buying Guide Headphones By Price RangeLast edited: 10/26/12
- A Hopefully Helpful Headphone Buying Guide For Newbies By BoomanaLast edited: 1/6/13
I am very glad that ONKYO released their new line of headphones into the North American market this June. I had been very curious about trying the ONKYO sound, but knowing new models were soon to...
I love this little thing I really do. I bought it for myself as a present for a professional milestone. I can't tell you that it is worth almost 200 bucks, that's your call, but I don't regret the...
This review was copy pasted from the Sound Blaster X7 thread with minor edits to make it appeal to broader audience. Intro First of all, I would really like to thank Andrew Sparks, the man...
I first used these as monitoring headphones for recording. They quickly moved out of my home studio and now I use them everywhere. I have one pair at home and one pair at work. I also take them...
The Good: Price/Quality ratio; Comfort; Bass quality/quantity; Musicality; Imaging. The Bad: Requires a powerful amplifier. Tonal Balance: V-Shaped Style: Circumaural semi-open. Cost: $250 at...
ohmspost #1 of 2011/3/11 at 3:13pmThread Starter
Head-Fi's Best Sellerspost #2 of 2011/3/11 at 3:17pm
It makes them different. Some things can be better - they often claim that requiring more power tightens up the bass and controls distortion better. It may also change the character overall - better would be subjective to your preferences.
Whether requiring heavier amplification for even the most casual listening is better - is another matter entirely. :)post #3 of 2011/3/11 at 3:21pm
More impedance requires more voltage, but is easier on the amp because it requires less current. Amps will perform better with high impedance loads, meaning stuff like distortion. Don't make impedance a deciding factor in buying a headphone. It's much better to choose a good headphone (of any impedance) and find a suitable amp to match.
High impedances are also less susceptible to problems with electrical damping caused by an amp's output impedance. And most of the time they're less likely to be colored by output impedance as well. Again, a suitable amp won't cause problems with any impedance.
High impedances don't need more power, if you use the scientific definition of power (watts). Sensitivity (in dB/mW) determines how much power is needed. But you get less power for every volt with high impedances. How hard a headphone is to drive depends as much or more on sensitivity than impedance.
Edited by Head Injury - 11/3/11 at 3:22pmpost #4 of 2011/3/11 at 3:22pmpost #5 of 2011/3/11 at 4:14pm
This is a really dangerous discussion. Impedance is one tiny factor in creating sound, and not the most significant by a long shot.
It also really depends on what you are using to drive said headphones.
To my understanding, high impedance headphones weren't designed to sound better, they were designed to have less impact in a studio where numerous headphones were being plugged in and out--it creates less problems in a series (or parallel or whatever).
The "tightest" sounding headphones I've ever owned have been my 25 ohm DT48 and my low impedance DR-Z6.
Get the headphones with the sound you want, then find a source that will drive them well. Beyond that, impedance means nothing.post #6 of 2011/3/11 at 4:17pmpost #7 of 2011/3/11 at 5:02pmThread Starter
So high impendance phones get less affected by distortion from having a chain or parallel of things plugged together?
And also, Head Injury, I did not understand what you meant by more impendance being easier on the amp because it requires less current.post #8 of 2011/3/11 at 5:36pm
If you plug a bunch of headphones that require a lot of current (low impedance) into an amp source, it puts a lot of pressure on the amp and can do damage to the amp. If you have a bunch of high-voltage headphones into an amp (high impedance), they just get quiet if there's too much pressure.
Unless you're running a multi-headphone distribution system, it's something you don't have to worry about.post #9 of 2011/4/11 at 5:38amThread Starterpost #10 of 2011/4/11 at 5:46amQuote:
Shouldn't really make much of a difference if your amplifier's output impedance is really close to zero.
Sighted listening test --> bias --> Night and day difference between DT770/80 and DT770/250.post #11 of 2011/4/11 at 6:51amQuote:
I think they are using voltage requirement and impedence interchangably. High voltage (impedence) reduces current requirement... low voltage (impedence) increases current requirement.
Think of it like a water pipe. A smaller pipe opening (high impedence/more resistance) doesn't need as much water to fill, as a big gaping sewer pipe (low impedence/less resistance)
With just one phone - the lower impedence makes better use of the amp's juice. But if you have many phones going into a system, you run out of water, if you will, unless you use higher impedence phones (smaller pipes).
Edited by liamstrain - 11/4/11 at 6:54ampost #12 of 2011/4/11 at 3:13pmThread Starterpost #13 of 2011/4/11 at 4:19pm
Current is measured in amperes, so no. High impedance takes more voltage, less current, same power if the sensitivity stays the same.
I'm gonna throw some numbers at you, get ready to duck. They're equations to relate power to voltage and current.
To find power (in watts, labeled P) from voltage (in volts, labeled V) and current (in amperes (I think whole amperes), labeled I for some reason), you do this:
P = I x V
To find power from voltage and impedance (R), you do this:
P = V^2 / R
To find power from current and impedance, you do this:
P = I^2 x R
So as might be able to see, as impedance increases, voltage must increase to achieve the same amount of power, and current must decrease to achieve the same amount of power. Because it's the headphone's sensitivity that determines how loud it gets with a given amount of power and not the impedance, as impedance increases and sensitivity stays the same voltage must increase, and current must decrease.
I can throw numbers in there so it looks less alien, if you need it.post #14 of 2011/4/11 at 6:56pmThread Starter
That helped a lot! all this stuff is really cool.
Just to make sure, amperes is the amount of electricity going through a wire or something, volts is the amount of pressure on that electricity and watts is the amount of electricity that the device is taking?post #15 of 2011/4/11 at 8:14pm
that is exactly right.. because voltage pressure can be positive or negative.
you could think of the amperes as the capacitor bank, and the voltage as the switching transistor.
ohms is of zero indication as to how good or bad the headphones are.
i might say 'dont expect a very VERY low ohm speaker to be any good'
and i say this because of one real good reason, the materials used in the voice coil are going to be much more expensive to be complex AND low resistance.
and besides.. it gets to be about this clear,
to keep the voice coil in compliance with amplifiers already on the market, it is simply easier to use computers to find the perfect 'hiding spot' for the extra wire to bring the resistance up.
that extra wire is going to work like a cooler to extract away heat.
you get more power handling from the speaker, and you can use the same exact amplifier without needing to build a new one (unless your distortion can be lowered thanks to new components).
imagine if the audio industry started to release lower ohm speakers and when you plug them into your current amplifier, the speakers get loud before you reach 35% volume on the amplifier.
and if you or somebody else accidently turns the amplifier up to 50% .. you blow a speaker (or both).
not worth the embarassment of selling different amplifiers for the lower ohm.
be sure to keep the ohm load within the specifications of the amplifier, it is ment to keep the distortion levels from the amplifier down.
playing a lower ohm speaker puts more voltage and/or amperes through many (or most) of the pieces on the circuit board.
that is how things break.
the audio industry has been working hard to make an impact.
the newer amplifiers probably wont show any ability to 'overclock' by using lower ohm speakers than recommended.
the most of it is making a match within the simple terms and specifications given.
it is almost color-coded for you in some places.
the rest of the setup is going to come from what you do to tweak the sound.
this proves to be less and less from headphones?
it will be more and more from home theater speakers?
there is a reason to see how 'involved' you get with your audio hobby.
but the good news is..
there is actually something out there to satisfy anybody (or will be coming in the future)
still a few loose ends not being updated yet.
think of all the new high-definition audio thanks to bluray.
none of the PC soundcards support decoding it yet.
and that means there are headphones waiting to be released with those new soundcards.
hopefully some serious updates to the virtual surround sound API too.
Head-Fi's Best Sellers
- Diy Beginners Guide
- › TRINITY - PHANTOM Series - New thread + WORLDS FIRST PUSH PULL... 12 seconds ago
- › VE - A New and Impressive Earbuds Brand 1 minute ago
- › Trinity VYRUS IEM available for pre-order now! 2 minutes ago
- › FiiO E12DIY Limited Edition Version---DIY your own sound ! 2 minutes ago
- › MEE Audio Pinnacle P1 - $199 Dynamic Driver Flagship *Reviews 2nd... 4 minutes ago
- › Best sub-30$ CHINESE brands EARPHONES thread- Hidden Gems, Personal... 4 minutes ago
- › Absolute best budget earbuds? 5 minutes ago
- › Best classical recordings...ever! 5 minutes ago
- › Sennheiser HD650 Impressions Thread 6 minutes ago
- › The Hardest hitting Headphones are.. ( "The EXTREME BASS Club") 6 minutes ago
- › ONKYO sealed wireless headphone Bluetooth-enabled / NFC support /... by Sonic Defender
- › AudioQuest DragonFly Red USB DAC, Preamp, Headphone Amp by selfdude
- › Sparkos Labs SS3601 Discrete Op-Amps by Yethal
- › Sennheiser HD 380 PRO Headphones by selfdude
- › Cascadia Audio Talos by keanex
- › XDuoo X3 DSD 24Bit / 192KHz CS4398 Chip Lossless Music Player by Nymphonomaniac
- › Sony MDR-1A Premium Hi-Res Stereo Headphones by fjhuerta
- › Cleer BT Bluetooth Wireless Headphone by moedawg140
- › ZhiYin Z2016 by crabdog
- › InEar StageDiver SD-4 (Small) by twister6
- › Flawless Album Suggestions
- › The Audiophile Scene in a Third World Country...
- › Mad Lust Envy's Headphone Gaming Guide,...
- › Mad Lust Envy's Headphone Gaming Guide,...
- › Mad Lust Envy's Headphone Gaming Guide:...
- › Chord Mojo FAQ
- › Head-Fi Logo Gear
- › All about iPod Touch 6G as digital transport
- › List of major HiFiMan HE1000 reviews,...
- › Can I change my user name? Can I delete my...