1. Hi Paul.

    That’s like the black tulip! And probably impossible to be perfect…It’s what they use when they do comparitive hi-fi reviews, which is why I always take them with a pinch of salt! That is, it’s really hard to match the conditions of impedance and “loudness” or “volume” for the human ear; basically ‘cos everyone’s ears are different as is the way a certain amp will perform when put through different speakers.

    OTOH, if you want to see how your music sounds through different kinds of consumer goods compared to studio monitors large or small, and hi-fi speakers, then there are off-the-shelf things you can buy.

    Be careful when connecting four sets at once or your amps might pop! It depends how permanent your setup is going to be.

    Here’s an idea, get four stereo amps, one for each speaker set. This would be the best way as the amp(s) would be loaded consistently and you can adjust the volume(s) to match when switched. It’s a simple matter to switch inputs with no loading effects. Just mixer bussing really.

    The usual way is with big expensive switches and massive expensive load resistors (usually wirewound) that may colour the sound and also, you’ve got to watch for big switching thuds going through the speakers (this is bad!). Sometimes there are masive wirewound variable resitors as well which aren’t cheap! Remember, all the components have to be capable of taking the max power you are going to throw at them!

    Here’s another way. Very like the first. Get some old 70’s or 80’s or 90’s hifi amps. Quite often they had two switched loudspeaker outputs. My mate had a Technics one like this. They tend to turn up in junk shop’s like the one in Bridgwater. No-one buys them as they are old but they are virtually bulletproof and cheap with excellent sound characteristics. We connected his expensive hifi speakers and the PA speakers that I made to see the difference and so we’d have some idea of the equalisation to use for the PA to get the sound as flat as possible. It was okay, don’t worry, as they were both 8 ohm nominal impedance. The difference? The PA speakers had crap EQ but were fucking loud!

    Anyway. TTFN. I’m off up North so no news from me for a while! Keep well.

    Strangely Perfect
    Crawling Chaos
    Foetus Products

  2. <p>Cool, thanks for that. I now need to make a passive/or completely transparent monitor controller. It has to be able to switch to 4 different sets of speakers and possible all 4 at same time. Obviously an attenuation knob and be fully balanced What do you think? Me</p>


  3. …and replying to the other thread as well…


    Bigger reels give you more recording time, that’s all.
    I’m not sure how it’s doing the tracks 1-3, 2-4. I’m guessing it’s one
    of three options. Either it’s recording stereo and to get the other
    two tracks you turn the tape over (that’s what it says in the manual
    you sent); OR, you can record 45 mins of mono on one track then flip a
    switch to record 45mins of mono on the other THEN turn the tape over
    and do the same things again. I.E. 4 tracks of mono; OR it’s recording
    double mono for 45mins then flip the tape over for another 45mins of
    double mono. The thing is it doesn’t mention mono or stereo nor a
    switch, so I’m just guessing.

    The double play tape mentioned is half the thickness of normal tape so
    twice as much fits onto a reel so you get twice the playing time.
    However the tape is more fragile and can’t contain a good flux density
    due to the reduceed number of magnetic particles in the tape. Because
    of this, one never used it in studios. It appeared later when the
    cassette came out so that people could get more tunes onto a cassette.
    What happened was after a few plays the tape usually got tangled up in
    the mechanism; you must remember that happening?

    However, it’s a simple two head job and you won’t be able to use it
    for echo. Also, it has a piss-poor freq response of 60Hz- 10kHz so
    would be really noisy anyway.

    Funnily enough, my cousin in Barrow in Furness used to have one of
    these and we’d play with it as children. Also, there was one in the
    home of the guitarist in my band when we were lads. I think they were
    quite popular with lots of different setups depending who they were
    selling to.

    Hope this helps


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