Cardo Scala G-4 Ear Bud modification

Discussion in 'Equipment' started by Golevi, Oct 11, 2010.

  1. hamshack

    hamshack n00b

    Joined:
    Aug 14, 2012
    Oddometer:
    1
    I did the earbud mod and it works great, now I need a way to use the boom microphone on my J&M helmet headset for the G4 also. That way I can take the boom mic off the G4 and just have one microphone for two radios. You would only need a mono jack for the microphone connection. If I knew what kind of connectors J&M uses that connect the microphone to the main wire harness I could make a Y splitter and route the mic audio to the G4 and the J&M harness. Could also do the same for the J&M helmet speakers and have them do double duty also..
  2. JetGrl

    JetGrl FJR Pilot

    Joined:
    May 22, 2011
    Oddometer:
    54
    Location:
    Phoenix, AZ
    I have been working with one of my customers on volume issues with the G9.

    Just to be clear, the G4 mod has the problem with volume being louder when you use the earbuds. It is a matter of impedance and power required. When the earbuds are used you need to run the master comm volume at a much lower level, almost at the bottom.

    This is not really a problem with the G4, it is still usable. The difference you notice is when the master volume goes up to compensate for increase in background noise it goes in steps and when you are at a low volume level the steps seem large.

    While you can live with it when using a G4 it gets harder when you are using a G9. The volume output of the G9 is higher than the G4 clamp can provide so as a result, it gets harder to live with at the low volume levels of the main control. Sometimes it can get to the point that when you plug in an MP3 player it may not be able to put out enough volume to get "noticed" by the amplifier and you can't hear it.

    The solution is to get some resistance in the output to the earbuds. This can be done in 3 ways, either by installing a 56 ohm resistor on the common leg inside the clamp or by installing an inline volume control. If you install a resistor inside the clamp you can no longer plug the speakers back in and use them, the volume will be cut down and you can't hear it.

    A simple solution is to get an inline volume control.

    I found a source for some short inline controls that seem to work well and are cheap. I picked up a few of them and will pass them along to anyone who gets an earbud mod done for an additional $8. If you have had a mod done in the past just send me an email and I'll send you one for the same price plus postage.

    eileen.kelleher AT gmail.com

    This is what it looks like:[​IMG]
  3. Kev UK

    Kev UK n00b

    Joined:
    Aug 21, 2012
    Oddometer:
    1
    Hello All.
    <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p> </o:p>
    I’d been reading this thread with some interest over the last couple of weeks because I wanted to modify my Scala Rider Q2 Pro so that I could use ear buds.
    <o:p> </o:p>
    I couldn’t understand why people were getting twitchy about the colour coding of the original speakers. Seeing as I had no intention of re-using these speakers I figured the colour coding of the wires had no relevance so I simply unsoldered them from the circuit board and put them to one side.
    <o:p> </o:p>
    For me the important information was printed on the circuit board, R+, R-, AN-R, L+, L- and AN-L. I assumed the wires marked AN-R and AN-L were antenna cables for the built in FM radio. It seemed most likely that the third wire in each speaker cable acted as an antenna and was only connected at the circuit board end.
    <o:p> </o:p>
    Of all the functions on the Q2 Pro, the one I use the least is the radio. So, I decided to leave these wires off entirely because a non functioning radio is a small price to pay for being able to have a conversation with my pillion at speeds above 40mph. However, having now carried out the mod and tested the units I can report that omitting the antenna cables seems to have had little or no effect on the performance of the radio.
    <o:p> </o:p>
    I purchased a 3.5mm stereo splitter from Maplins for £6.50 which was the only expenditure required to convert both mine and my pillions Q2 Pros. The splitter is one of those gadgets with a single 3.5mm male jack and two females to allow two people to listen to a single iPod/MP3 player.
    <o:p> </o:p>
    I soldered one of the female plugs to each of the Scala units as a replacement for the original speakers. There is very little room in the Q2 to fit a socket so I have ended up with a short lead exiting the casing instead of the original speaker cables.
    <o:p> </o:p>
    I have photographed each step if anyone is interested. The whole operation turned out to be a whole lot easier and quicker than I anticipated.
    <o:p> </o:p>
    I hope this helps the Q2 Pro users amongst you.
    Kev.

    [​IMG]

    [​IMG]
  4. JetGrl

    JetGrl FJR Pilot

    Joined:
    May 22, 2011
    Oddometer:
    54
    Location:
    Phoenix, AZ
    I guess the easy answer would be that after doing maybe 8 or 10 of these, but some going well some problematic. Either some revs of the boards are marked wrong or some older models are inconsistent. If the markings on the board are followed the unit won't work.

    I don't work on them anymore for that reason, the last one I did I worked on I got so frustrated that I bought a new one for the customer and modified that one.

    If you simply remove the wires and follow the markings sometimes it just does not work. You can even find conflicting wiring descriptions on this forum.

    Good luck,
    Eileen

    Sent from my Nexus 7 using Tapatalk 2
  5. bob393

    bob393 Been here awhile

    Joined:
    Dec 23, 2010
    Oddometer:
    419
    Location:
    Goshen, NY
    I got to tell you: You guys do some superior work.
    I'm pretty good at this stuff but I don't think I would have the stones to mod mine.

    Bravo :clap
  6. montanaman

    montanaman Traveler

    Joined:
    Oct 30, 2003
    Oddometer:
    171
    Location:
    CA,AZ,MT..USA
    I ( like many) have the G4 and wish I could use in ear's as they sound way better and reduce wind noise at the same time. That said I dont have the time,tools or patience to tear it apart and re-wire it. Too bad you cannot just plug a female jack/adaptor in the input that is already on the back of the unit but I guess that is just for sound in and not sound out? Too bad because that would be an easy fix. Maybe the O.P could start a business here. I would gladly pay:wink:
  7. JetGrl

    JetGrl FJR Pilot

    Joined:
    May 22, 2011
    Oddometer:
    54
    Location:
    Phoenix, AZ
    Then you would lose the mp3 input. The jack addition in the G4 clamp is fairly easy and quick. If the mod gets too fiddly it is not worth doing, the clamp mod as is works really well.

    Jmho
    Eileen

    Sent from my Samsung Galaxy II using Tapatalk
  8. montanaman

    montanaman Traveler

    Joined:
    Oct 30, 2003
    Oddometer:
    171
    Location:
    CA,AZ,MT..USA
    Yes on the MP3 jack but I never use it as I stream all my music from my blu tooth GPS unit if I am using the Scala. Other wise just use in- ears and go directly to my i-pod if I just want to have good music sound and less noise. It would be nice to have the best of both worlds but I cannot see myself doing the work here. I am not that good and dont have all the tools and time.
  9. JetGrl

    JetGrl FJR Pilot

    Joined:
    May 22, 2011
    Oddometer:
    54
    Location:
    Phoenix, AZ
    I have a thread in the vendors forum about this. I do the mod for you for $30 plus return postage. You can email me at: Eileen.Kelleher@gmail.com for mailing instructions. I can get it on the way back to you the same day most of the time.

    Eileen
    Sent from my Nexus 7 using Tapatalk 2
  10. montanaman

    montanaman Traveler

    Joined:
    Oct 30, 2003
    Oddometer:
    171
    Location:
    CA,AZ,MT..USA
    Great. Thanks..

    I'll PM you. I am sometimes in the Phoenix/Cave Creek area. In fact will be this weekend..
  11. Bax72

    Bax72 n00b

    Joined:
    Oct 10, 2012
    Oddometer:
    2
    PM sent, Eileen :D
  12. Bax72

    Bax72 n00b

    Joined:
    Oct 10, 2012
    Oddometer:
    2
    Wanted to thank Eileen for a professional transaction and for such a quick turn-around! She is a class act and I highly recommend her to anyone needing some added speaker flexibility for their Scala unit!
  13. rideroid

    rideroid n00b

    Joined:
    Oct 30, 2012
    Oddometer:
    1
    Location:
    Long Beach, CA
    Eileen, sent you a PM also! Thanks
  14. drisschoufa

    drisschoufa Adventurer

    Joined:
    Feb 14, 2010
    Oddometer:
    52
    Location:
    beautiful San Diego
    First thank you very much your instruction were idiot proof as i followed them and succeded.

    I just did this mod yesterday after reading and actually having my speakers operating at a very low volume when someone is talking as i couldn't hear anything while they could hear me. music was just ok as if i put the volume up it becomes distorded.

    now the problem I forgot to solder the black wire that is attached already to to L to the R on the back of the circuit board.
    what are my consequences or problems????? by the way everything works fine and i can hear sound from both ears.

    I have never soldered anything in my life and i am usually the guy that the fire departement have to be called in if I am doing any handy work at home. it took me one hour messing with the damn solder to get it to do what I am suppose to be doing but I succeded....I waited until my wife went to bed to do this as she knows my repair skills.
    thank you
  15. sevenpointsixtwo

    sevenpointsixtwo Resident Hooligan

    Joined:
    Apr 9, 2010
    Oddometer:
    235
    Location:
    In the Shadow of Smuggler's Notch, VT
    I know this is an old thread, but I just did a similar hack mod on my g4. I noticed that I had to have the volume all the way up when riding with earplugs, and it was still pretty quiet. The sound quality was awful at that volume too, with clipped base and lots of fuzz.

    I decided not to chop up the plastic case, so I just rewired the aux-input 1/8th inch jack that's already on the board to connect to the speaker output wires.

    It's super clean and I'll be getting some custom-molded earplug/buds (DIY for $16, not those $400 ones!) for in-helmet use. We'll see how it sounds then!
  16. simmo0020

    simmo0020 Adventurer

    Joined:
    May 10, 2013
    Oddometer:
    13
    Ok I started my own thread to see if anyone had done anything similar to this on the Schuberth SRC system, it appears nobody has so looks like I am going to be the pioneer.

    I know how to solder but I wan't to make sure I get this right for obvious reasons!

    So these are the speakers

    [​IMG]

    And these are where they enter the sealed unit

    [​IMG]

    Right,

    Q1- Can I just fit a male and female jack inline external without opening the box then just unlpug the speakers and plug in my custom moulded plugs?

    Q2. If the answer to Q1 is No, then what can I do?
  17. JetGrl

    JetGrl FJR Pilot

    Joined:
    May 22, 2011
    Oddometer:
    54
    Location:
    Phoenix, AZ
    The problem you will find is trying to solder the fine plastic coated wires. They are very resistant to soldering. The only way to do it is to touch the tip of the wire with a small torch, I use a small kitchen torch.

    If you cut the wires you will need to identify the common wire on each side so they can be tied together in an inline jack to the shield, or ring connection. In Cardo's other units the wires are red and green, on one side they will be red with a white (clear) stripe and green with a white stripe. That is the way the G4 and G9 is wired, the Q2's are inconsistent.

    JETGRL

    Sent from my Nexus 7 using Tapatalk 2
  18. simmo0020

    simmo0020 Adventurer

    Joined:
    May 10, 2013
    Oddometer:
    13
    Hi thanks for the reply.

    So I should be able to cut the wires external to the unit? Could you break it down in simple terms of what I will need to do please?
  19. JetGrl

    JetGrl FJR Pilot

    Joined:
    May 22, 2011
    Oddometer:
    54
    Location:
    Phoenix, AZ
    Personally, I would open it up and remove the wires from wherever they go and solder a nice piece of shielded 2 conductor audio patch cable directly to the board. Just jumper between the 2 common connections, usually marked as R- and L- (on G4 and G9). Then install them to an inline 3.5mm jack (do this end first so the wire can be as short as needed).

    JetGrl

    Sent from my Nexus 7 using Tapatalk HD
  20. Dorito

    Dorito Dreamer and Doer

    Joined:
    Jul 31, 2010
    Oddometer:
    6,125
    Location:
    Maryland
    :lurk Updates?