Changing speakers-Iphone.

Discussion in 'DCC Sound' started by Andy_Sollis, Dec 28, 2019.

  1. Andy_Sollis

    Andy_Sollis Full Member

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    I’ve a Lima class 60 so it’s kinda empty inside. I’ve recently wired it with DCC using a Hornby TTS 60 sound chip, but, quite frankly, it sounds quiet.

    so, on advice from a friend, I’ve stumped up £4.99 for an iPhone speaker which I hear are the new thing to use. It arrived this morning, but alas, I was at work at 12pm and the loco is at my Dads, so hope to collect it soon and make a swap.

    I’ll report back on any findings. I could probably have gone for a bigger speaker, (plenty of space for once) but see what we get in volume and quality here.

    then I may look at what other speakers are now available as the 08 I have is soo weak you hardly hear it. (Then it squeaks like a banchee from the mechanism)

    andy
     
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  2. Andy_Sollis

    Andy_Sollis Full Member

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    Here is the speaker. From Roads and rails.
    B15A6413-770D-4F16-95FE-6D09DB156297.jpeg
     
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  3. Keith M

    Keith M Staff Member Moderator

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    I was recently asked by a 90 year old friend to have a look at an Oxford Rail Adams Radial sound fitted by Hattons which had the same problem, so quiet you could hardly hear it. All the volume CV's were set at 128 (Maximum), but it was very poor, and all I could suggest was to try drilling some small holes in the imitation 'coal' to let the sound out, as the speaker was in the bunker. I then fitted sound into his Hornby Adams Radial using the Hornby 'Black 5' TTS sound decoder He'd been sold as the 'nearest to it' in sound terms, and this was quite satisfactory volume-wise, although some cutting of the angled bulkhead within the bunker had to be done to create sufficient (just!) space. In this day and age, when are manufacturers going to finally appreciate that many modellers nowadays have a right (considering the price asked of models) to expect simpler sound fitment as the 'norm' instead of having to cut and carve a model to stand any chance of getting a decoder and speaker into a model?
    I'd be interested to find out how you go on with the iPhone speaker Andy, presumably it's the correct impedance (usually but not always 8 ohms) to match the decoders output. What's the physical size of this speaker, the one I fitted into the Hornby Adams Radial was a 'youchoos' 15mmx11mmx5mm, smallest they do, and it just went in as there ain't much room in that bunker!
    Keith.
     
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  4. Andy_Sollis

    Andy_Sollis Full Member

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    Keith, I’ll reply in more detail once I’ve completed.

    Andy
     
  5. paul_l

    paul_l Staff Member Administrator

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    May be worth trying to print a sound pox for the speakers, and seal it in with silicon.

    Paul
     
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  6. steve

    steve Full Member

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    Sounds like a nasty problem!!
     
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  7. jakesdad13

    jakesdad13 Staff Member Moderator

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    Ooh er matron! :avatar:
     
  8. paul_l

    paul_l Staff Member Administrator

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    damn mobile phones - never happens with post-its :avatar:

    Paul
     
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  9. Andy_Sollis

    Andy_Sollis Full Member

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    Hoping the phone speaker means that’s not needed.

    Unless you refer to the 08? That may be a size issue again.
     
  10. paul_l

    paul_l Staff Member Administrator

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    For the 08, (I have the Hornby fitted version which is a ESU v3.5 so uses 80ohm speaker), I was recommended to replace the decoder for a v4 version and use two sugar cube speakers behind the front grill.
    Ebay has many different sizes listed, but may also be worth looking for / making a sound Box for these as well, your iPhone speakers may already have the sound box bult on.

    Paul
     
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  11. Andy_Sollis

    Andy_Sollis Full Member

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    Hmm. I wonder...
    Swapping speaker may be an option. The iPhone speaker may even fit too..

    that’s the next project to look at.
     
  12. Andy_Sollis

    Andy_Sollis Full Member

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    Firstly In reply to @Keith M here is the speaker.
    933B4A9E-F517-4C5C-BF83-F055C981B364.jpeg

    As a gauge it’s next to the decoder.

    Now, here is how it sounds on the original speaker.



    and here is how it sounds with the iPhone speaker.
    In my mind as may not be apparent on the computer, it’s less tinny and more base but no louder.



    well, next is the 08 to see if I can improve that.

    happy new year.
     
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  13. Keith M

    Keith M Staff Member Moderator

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    The iPhone speaker is definitely an improvement, especially from the bass point of view Andy. I can't image that the volume will be increased if the speaker impedance is the same as the original, but whatever enclosure the speaker is in could possibly reflect the sound forward and make it sound louder, though I'm no sound engineer.
    Keith.
     
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  14. Andy_Sollis

    Andy_Sollis Full Member

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    Hmm. No that’s a thought. I’ve not actually got any holes in this model, which may be an issue.. but there is so much empty space in this loco that I’m not sure it matters. There is little volume change body on or off, however, I wonder if pointing the speaker upwards may make a difference?
     
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