or Connect
Head-Fi.org › Forums › Help and Getting Started › Introductions, Help and Recommendations › Mixing 16 and 32-ohm (L&R sides) in a custom pair of headphones...? Bad idea?
New Posts  All Forums:Forum Nav:

Mixing 16 and 32-ohm (L&R sides) in a custom pair of headphones...? Bad idea?

post #1 of 4
Thread Starter 

Hello everyone!

Thank you for taking some time to deal with a forum-newbie.  However, my question(s) should be perhaps a bit interesting given the fact that I've scoured the internet for hours for this information, but to no avail... hence joining this community.

Anyway, here's the story:

I'm fixing (or hoping to fix) a pair of JBL J33i headphones (ear-buds) that have stopped working on the left side.

 

Side-note: Earlier, I had determined definitively that it was not a wiring issue, or loose connection, but rather a busted speaker itself.  I might add that the warranty no longer applies since I physically dismantled the parts that were housing the speaker (well, it didn't apply anyways because my friend had injured some of the wire with a candle or something (which somehow wasn't causing the problem at hand)).

 

Anyway, my solution is this: simply find a working left speaker of the same JBL breed and solder the working halves together where necessary (I've done this before with much success).

 

And so, I have found (on ebay) a half-broken JBL J33a (not "J33i") headphone set with the only apparent difference being that the J33a's have an "Input Impedance" of 32ohms, while my friend's J33i's "Input Impedance" is 16ohms.

 

They have the same frequency response ("10Hz – 24kHz"), and the same driver size ("23/64" (9.2mm)").

 

So, can I mix these two speakers on the same set of headphones?  What else am I not considering?  Is it 'bad' for the mp3 players?  Will the 32ohm-side be quieter? etc..etc...

Thank you for your help!

 

The headphones:

 

JBL J33i (The ones I have (input impedance = 16ohms))

 

JBL J33a (input impedance = 32ohms)

 

 

TLDR: Need to fix some ear-bud headphones that are broken on one side; what happens if I replace the broken 16ohm speaker (just one side) with a 32ohm ("input-impedance" ratings)?; all other specs are the same; suggestions?; bad idea?; Thanks!

post #2 of 4

If you try out this fix, you will mostly likely notice that one side is louder than the other. (16ohm will be louder and 32 ohm will be quieter)

But this is just an educated guess.

post #3 of 4

 

Aside from power output and distorttion there could be a whole host of other problems doing this because unless you're using a balanced amplifier, headphone driver circuits typically share a common ground for left and right channels. 


Edited by ProtegeManiac - 4/14/15 at 8:54am
post #4 of 4

The products linked are "different"... at least in some way.  One is for Android the other is for iOS.  I'm not sure why, but many portable headphone manufacturers are now designing two specific products... one for Android and another for iOS (Apple), and I think thats what you have here.  I thought it has to do with the microphone+button dongle thing, and how the buttons interact with the phone.  But I am not specifically sure.

 

Regardless I wouldn't inter-mix the two... or at least I wouldn't expect intermixing them to work.


Edited by kramer5150 - 4/14/15 at 9:10am
New Posts  All Forums:Forum Nav:
  Return Home
Head-Fi.org › Forums › Help and Getting Started › Introductions, Help and Recommendations › Mixing 16 and 32-ohm (L&R sides) in a custom pair of headphones...? Bad idea?