Does anyone have any idea what amount of ohms the headphone jack is pushing out? I'm getting a terrible hissing sound using my Sennheiser CX-300's which I have a feeling is due to an impedance mismatch. The Senn's are rated at 16 ohms.
I use a Philips SHN2500 Noise Cancelling Headphones Earphones 32 Ohm and sounds much better, remember this are Noise Cancelling and also helps.
I have an iBolt car dock, which has a dock connector on it that then splits out to a 3.5mm audio out and a car charger connector. These work, but I found the output level was quite low when feeding the aux input on my car, even with all settings on the phone turned up (master and media volumes). While searching online, I found an impedance matching device that is designed to match the output impedance of a phone's headphone out to the aux in on the car. It works quite well, but I found it ONLY works with the headphone output jack of the phone, NOT the output jack accessed through the docking port. When using the dock audio output, the audio through the transformer is very thin an tinny, making me believe the output impedance of the dock audio out is different from the headset audio out on this phone.
I know it's an odd question, but any thoughts/experience with such things out here? Without this transformer involved, the quality and volume of the audio on both of these outputs seems identical. Only when using the impedance matcher is there a drastic difference.
Thanks,
Chris
If you are rooted and running a kernel that supports it, you could try a sound app like voodoo or boeffla to raise the gain and see if it raises the output via the usb port.
PBJ kernel supports boeffla
Saber supports Voodoo
If it's loud enough but thin sounding you could try bass boost in voodoo.
Sent from my SCH-I605 using xda premium
Hello,
I am looking forward to buying a decent headphone. The headphone's impedance is 47 Ohms. Usually, the lower the impedance, the less the trouble of powering it properly. Obviously, 47 Ohms in above the average impedance of earphones. So can someone here with a set of headphones with impedance close to 47 Ohms try it with the HAM2 and see if it gets properly powered.
Thanks.
I own Sennheiser HD 598, and even though the large connector requires an adapter to fit into the small headphone port of the phone, I did try it, and found the max volume to be just 20% shy of where I'd like my louder music to be. These headphones supposedly are 50ohms.
I've studied the big thread about Volume Boost of headphones...
Is there anything around about non-headphones volume boost. My V10 is not very loud compared to my Note 4 with Viper ...
Thanks!
I haven't looked into the physical components, really, but if the dedicated ESS DAC with the amp act as any other dedicated components I'm familiar with, then you would have to physically change the wiring route to the speakers. Right now it's headphone only because the amp is directly connected to the output jack. The first issue is software-based, but the second (with the speakers) relates to hardware.
Again, I haven't really checked, so someone correct me if I'm wrong.
It's easy to force high impedance mode.
I've got a set of headphones with a detachable 1/8" jack at both ends, but you can use a splitter and an extra 1/8" double male plug cable as well.
I use the 1/8" cable and connect my v20 to another cell phone or tablet headphone jack. It immediately goes into high impedance. I unplug only the end going into the other phone and plug that end into my headphones. As long as the cable stays plugged into the v20 it stays in high impedance mode
If your headphones don't have a detachable cable, it'll still work with a splitter and a cable that has male 1/8" plugs at both ends.
Using the splitter, plug your splitter into the v20. Use the double 1/8" jack cable to connect the splitter to a phone or tablet. Once it's in high impedance mode, unplug the cable from both ends and connect your headphones to the splitter. Don't remove the splitter plug from the v20. As long as the splitter stays plugged, you'll be in high impedance mode and get more power into your headphones
Ok...what is the use of high impedance?
Sid 6.7 said:
It's easy to force high impedance mode.
I've got a set of headphones with a detachable 1/8" jack at both ends, but you can use a splitter and an extra 1/8" double male plug cable as well.
I use the 1/8" cable and connect my v20 to another cell phone or tablet headphone jack. It immediately goes into high impedance. I unplug only the end going into the other phone and plug that end into my headphones. As long as the cable stays plugged into the v20 it stays in high impedance mode
If your headphones don't have a detachable cable, it'll still work with a splitter and a cable that has male 1/8" plugs at both ends.
Using the splitter, plug your splitter into the v20. Use the double 1/8" jack cable to connect the splitter to a phone or tablet. Once it's in high impedance mode, unplug the cable from both ends and connect your headphones to the splitter. Don't remove the splitter plug from the v20. As long as the splitter stays plugged, you'll be in high impedance mode and get more power into your headphones
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its just wasted a time, and change nothing on everything you hear. look, high impedance automatically triggered only if you put headphone with 50 ohm above. you know why? because regular phone or music player only could deliver impedance with range 15-30ohm. while lg v20 like any other DAP with external amplifier could support from 50-600 ohm. even with 250 ohm headphone if you put on regular phone it would only run on 30 ohm max. and same goes to your phone, even with your v20 or any DAP player which support 50ohm impedance above, if you connect to low impedance headphone it would only run on your max headphone impendance. its not something you could force to work.
alldine345 said:
its just wasted a time, and change nothing on everything you hear. look, high impedance automatically triggered only if you put headphone with 50 ohm above. you know why? because regular phone or music player only could deliver impedance with range 15-30ohm. while lg v20 like any other DAP with external amplifier could support from 50-600 ohm. even with 250 ohm headphone if you put on regular phone it would only run on 30 ohm max. and same goes to your phone, even with your v20 or any DAP player which support 50ohm impedance above, if you connect to low impedance headphone it would only run on your max headphone impendance. its not something you could force to work.
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Bro I agree with you. I have used 60ohms headphones and 45ohms headphones with my Lg V20. With 50hms and above, we can see "high impedance headphones connected" in settings.but nothing improved in sound quality. So doing force high impedance is unnecessary.
sbacham said:
Bro I agree with you. I have used 60ohms headphones and 45ohms headphones with my Lg V20. With 50hms and above, we can see "high impedance headphones connected" in settings.but nothing improved in sound quality. So doing force high impedance is unnecessary.
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check your audio files first, make sure you have lossless audio like flac or dsd. for flac i recomended using song with 24bit/96khz. if you playing with stock lg music player you'll see there is "hifi" icon on the selected song. join audiophile comunity for more reference. and for headphones , well.. there are many type, some headphone have flat bass, more vocal, etc. choose one which suits you and the music you played. from what i got while browsing on auido/video community, there are 3 main requirements for best audio experience:
1. good drivers aka player like DAP/AMP or our beloved LGv20 which support impedance above 50 ohm
2. lossless audio files like flac, dsd/dsf which support hifi system
3. good headphone with high impedance that has many feature depends on your need. some people love high bass, while other prefer clear vocals, etc
lg v20 is a good drivers, its not the best but its good if you dont wanna spend another 150-250$ on music player with dedicated amplifiers.
High Impedance Workaround
I was thinking the same thing on an easy workaround, so I bought a $3 splitter, plugged in my AKG headphones which pulls up high impedance, then plugged the B&O earbuds. (that came with my V20)Then unplugged the AKG's and it remained in high impedance mode. Doing that, if you turn the volume up higher than 75%, you'll probably pop an ear drum. It gets waaay loud and clean!
Frodar
H910
Why not just use my mod and forget about extra cables?
NVM.. Just read no root. Sorry folks.
Sent from my LG-LS997 using Tapatalk
I never said it improved quality. I understand how DACs and amps work.
The reason for high impedance mode.... If you have headphones with less than the 50ohm threshold, high impedance mode increases power output from the amp. The result.... On low impedance headphones you get more power which means higher volume output.
I have a set of V-moda Crossfade LP cans that are less than 50ohm. On the regular power level, max volume of 75 still lacks a couple decibels for my preference. When I trip high impedance mode I am able to reach a higher volume level and I usually don't need to go higher than 60.
frodar56 said:
I was thinking the same thing on an easy workaround, so I bought a $3 splitter, plugged in my AKG headphones which pulls up high impedance, then plugged the B&O earbuds. (that came with my V20)Then unplugged the AKG's and it remained in high impedance mode. Doing that, if you turn the volume up higher than 75%, you'll probably pop an ear drum. It gets waaay loud and clean!
Frodar
H910
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Exactly... Higher volume output. I didn't say it improved quality, as others are arguing.
sbacham said:
Ok...what is the use of high impedance?
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Look at my last post.....
Triggering high impedance mode and then connecting low impedance headphones will give you more amp power which equals higher volumes. Does nothing about increasing quality just higher volume threshold. But only if you trigger high impedance and THEN connect LOW impedance headphones
This mod worked with a splitter in my v20. Thanks @Sid 6.7. wow listening to low impedance headphones at high power is a fun. Great workaround.