Seriesing speakers?

Discussion in 'Electrical Engineering' started by Danny Johnson, Jul 9, 2005.

  1. If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    speakers 300 watts each in series, how would this affect the quality
    of the sound?

    Thanks,
    Dan
    Danny Johnson, Jul 9, 2005
    #1
  2. "no_one" <> wrote in message
    news:lLVze.1095$...
    > depends on the quality of the speaker.
    >

    All things being equal except impedience, 8 ohns Vs. two 4 ohm speakers.
    >
    >
    > "Danny Johnson" <> wrote in message
    > news:XDQze.34555$...
    >> If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    >> speakers 300 watts each in series, how would this affect the quality
    >> of the sound?
    >>
    >> Thanks,
    >> Dan
    >>
    >>
    >>
    >>
    >>

    >
    >
    Danny Johnson, Jul 9, 2005
    #2
  3. "Palindr?me" <> wrote in message
    news:...
    > Danny Johnson wrote:
    >
    >> If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    >> speakers 300 watts each in series, how would this affect the quality
    >> of the sound?

    >
    > Speakers even of the same impedance and power handling vary greatly in the
    > "quality of the sound" that they produce.
    >
    > Speakers even of the same or very similar measured frequency response vary
    > greatly in the "quality of the sound" that they produce.
    >
    > Speakers vary greatly in the "quality of the sound" that they produce -
    > simply by changing their position and/or the environment in which they are
    > used.
    >
    > Thus your question cannot be answered with only the details given.
    >
    > If you specified which make and model of speakers that you wished to
    > compare, the environment and the type of music, plus details of the rest
    > of the system, you may find that a hifi group could give you some idea of
    > the difference you might expect. However, "quality of sound" is an
    > individual experience and just because it should sound better - it may
    > not to you.
    >
    > I would suggest that, if you really want to know, you try it and see.
    >
    > BTW I assume that by "speakers" you mean speakers in enclosures.
    > Correctly designed enclosures are vital. Also, expensive, well-designed
    > speakers can often sound worse than cheap ones- because they don't mask
    > the distortion produced by the rest of the system to the same extent that
    > limited bandwidth cheap speakers do...
    >

    The reason I want this is on camping trips, my family and I
    often enjoy playing music together. One brother is a loud
    banjo player, another mandolin, a sister plays battery operated
    keyboard. So my acoustic guitar doesn't have a chance
    against these loud instruments. There is no 115 VAC available.
    >
    >
    >
    > --
    >
    > Sue
    Danny Johnson, Jul 9, 2005
    #3
  4. In article <ULWze.36716$>,
    "Danny Johnson" <> writes:
    >
    > "no_one" <> wrote in message
    > news:lLVze.1095$...
    >> depends on the quality of the speaker.
    >>

    > All things being equal except impedience, 8 ohns Vs. two 4 ohm speakers.


    Speaker impedance isn't constant -- it varies widely with the
    frequency and is dependant on the enclosure too. For two
    identical speakers in identical enclosures, it should be OK.
    For two different speakers with different impedance/frequency
    graphs, they would each sound like they were being driven
    through different graphics equalizers with the sliders set to
    random positions.

    You would get more predictable results with two 16 ohm speakers
    in parallel. Then they wouldn't need to be identically matched.

    In either case, the total sound output might be higher or lower.
    That would depend on the efficiency of the two speakers verses
    the original speaker. The output can become much more directional
    though (Youngs Slits effect*) giving loud and quiet areas, which
    in some cases (off-centre) will vary by frequency.

    *See http://www.practicalphysics.org/go/Experiment_115.html

    --
    Andrew Gabriel
    Andrew Gabriel, Jul 9, 2005
    #4
  5. Danny Johnson

    ehsjr Guest

    Danny Johnson wrote:
    > If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    > speakers 300 watts each in series, how would this affect the quality
    > of the sound?
    >
    > Thanks,
    > Dan
    >
    >
    >
    >
    >


    It would still be too damn loud.

    Ed
    ehsjr, Jul 10, 2005
    #5
  6. Being in series, the electrical damping as seen by the LS
    back into the amplifier would be very different, hence
    the bass response would vary. Putting LS in series
    is generally not a good idea. Glenn.

    Danny Johnson wrote:
    > If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    > speakers 300 watts each in series, how would this affect the quality
    > of the sound?
    >
    > Thanks,
    > Dan
    Glenn Baddeley, Jul 11, 2005
    #6
  7. Danny Johnson

    Jimmie Guest

    "Danny Johnson" <> wrote in message
    news:XDQze.34555$...
    > If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    > speakers 300 watts each in series, how would this affect the quality
    > of the sound?
    >
    > Thanks,
    > Dan
    >
    >
    >
    >
    >

    From an electrical standpoint there should be no trouble in doing what you
    want. wire the + or red terminal of one speaker to the - or black on the
    other. How it will sound depends on too many variables, many of them very
    subjective, to discuss
    Jimmie, Jul 12, 2005
    #7
  8. Danny Johnson

    John Ray Guest

    FWIW the de-facto standard in guitar amplification is a series / parallel
    combo of 4 16 ohm 12" speakers.

    John

    "Glenn Baddeley" <> wrote in message
    news:dasmo4$i7k$...
    > Being in series, the electrical damping as seen by the LS
    > back into the amplifier would be very different, hence
    > the bass response would vary. Putting LS in series
    > is generally not a good idea. Glenn.
    >
    > Danny Johnson wrote:
    >> If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    >> speakers 300 watts each in series, how would this affect the quality
    >> of the sound?
    >>
    >> Thanks,
    >> Dan

    >
    John Ray, Jul 15, 2005
    #8
  9. Yeah, but its designed to work like that in the given cabinet.

    The LF damping on each speaker would be different if they
    were all connected in parallel, or all in series, and then the LF
    response would vary.

    >Putting LS in series is generally not a good idea.


    better qualified as "without considering the effect on damping".

    Glenn.

    John Ray wrote:
    > FWIW the de-facto standard in guitar amplification is a series /
    > parallel combo of 4 16 ohm 12" speakers.
    >
    > John
    >
    > "Glenn Baddeley" <> wrote in message
    > news:dasmo4$i7k$...
    > > Being in series, the electrical damping as seen by the LS
    > > back into the amplifier would be very different, hence
    > > the bass response would vary. Putting LS in series
    > > is generally not a good idea. Glenn.
    > >
    > > Danny Johnson wrote:
    > >> If I were to replace one 8 ohm speaker 500 watt with two 4 ohm
    > >> speakers 300 watts each in series, how would this affect the

    > quality >> of the sound?
    > > >
    > >> Thanks,
    > >> Dan

    > >
    Glenn Baddeley, Jul 15, 2005
    #9

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