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    A recent Greg Timbers interview on Erin’s Audio...

    A recent Greg Timbers interview on Erin’s Audio Corner

    https://m.youtube.com/watch?v=afeTHLLp-EI
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    Very nice system. I like the simplicity of it.

    Very nice system. I like the simplicity of it.
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    I did visited Eldorado in 2007 on my breakfast in...

    I did visited Eldorado in 2007 on my breakfast in America trip and heard the system. I remember getting the train down from NY City.

    Scotty was right into it and very passionate about his audio...
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    When the weather here clears l will post some...

    When the weather here clears l will post some driver and system measurements with and with out EQ for illuminative purposes.

    Another application of structured design is to provide precise EQ for...
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    An extension of classic analogue EQ in the studio...

    An extension of classic analogue EQ in the studio recording process is the selective addition of tonal colour. This is done using various techniques which exhibit saturation. The effect is what Neve...
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    Hi Rob, That is exactly right. Thatís why...

    Hi Rob,

    That is exactly right.

    Thatís why l think offering some preset EQ options that have been thought through carefully is possibility. The measurements l or Greg would do on a test system...
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    Riley Casey commented in another thread that some...

    Riley Casey commented in another thread that some in built Eq in an active crossover can be quite useful.

    Without doing a deep dive into what EQ can and can't fix as a rule EQ can't fix phase...
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    So why are discrete operational amplifiers not...

    So why are discrete operational amplifiers not more widely used in professional and consumer electronics. The answer they are used in premium equipment but that comes at a cost. The question then is...
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    In the previous post l discussed some of the...

    In the previous post l discussed some of the performance limitations of monolithic opamps in audio applications.

    But this is not really new news. Dean Jensen, an astute and very talented American...
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    I have seen some people upgrade the legacy JBL...

    I have seen some people upgrade the legacy JBL 5234/5235 active crossover with new monolithic opamps in the past.

    This is a good idea where the Opamp used was a TL074. This Opamp and is dual...
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    My analogue crossover l have mentioned will use...

    My analogue crossover l have mentioned will use discrete operational amplifiers and low impedance design. The estimated cost ex works will be around US$2400 mark. In adjusted US$ the JBL DX1 would be...
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    Another problem arises. The monolithic op amp...

    Another problem arises. The monolithic op amp only has a small fraction of output current in class A. It therefore has to drive this load in class B. But class B leads to higher distortion and noise...
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    The story does not end there. If your...

    The story does not end there.

    If your crossover has a rated noise level of -110 db then itís connected to your power amp with a rated noise of -110db the noise level jumps to -104db. How do? The...
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    As a rule the noise level should be at least 70...

    As a rule the noise level should be at least 70 db below the lowest signal level in normal operation. Not the manufacturers rated noise performance at the rated output. The reason is that in practice...
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    One of the bug bears with using an active...

    One of the bug bears with using an active crossover is the issue of ground loops that can intrude as a hum or buzz. In most but not all cases this is mitigated with balanced equipment inputs and...
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    On the fan noise it really is a pain if you run...

    On the fan noise it really is a pain if you run your system a normal domestic levels.

    The quietest fans are around 30-40 db or so. But around 60db is going to annoy you after a while. To explain...
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    Great 👍 post. Your point on the fan is...

    Great 👍 post.

    Your point on the fan is noteworthy.

    A while back a number of users of BSS units hit this fan noise problem and attempted various diy adventures to mitigate the noise. The same...
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    Great journey. Enjoy

    Great journey.

    Enjoy
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    Looking more closely at post 34/35 above in more...

    Looking more closely at post 34/35 above in more detail.

    One of the misconstrued notions about a digital universal active crossover or any universal active crossover is that its quick easy fix to...
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    Some consumer loudspeaker manufacturers such as...

    Some consumer loudspeaker manufacturers such as Dynaudio and Kef are spearheading full active loudspeakers. An active loudspeaker as a rule has all the power amplifiers built inside the loudspeaker....
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    The limitation of all universal active crossovers...

    The limitation of all universal active crossovers including dsp digital and FIR digital crossovers is as stated above. You have to know the precise crossover settings and a detailed understanding...
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    If your following these posts the structured...

    If your following these posts the structured approach to the application of active crossover very much makes the application of the active crossover easier implement successful. Take out the guest...
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    Subject to further investigation the existing pre...

    Subject to further investigation the existing pre determined systems can be improved with active crossover approaches not available in passive crossover implications. This was applied to the...
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    2. The project/diy louder system. The thinking...

    2. The project/diy louder system. The thinking cap customer.
    This application is more open ended in that the user has license for prescribing the loudspeaker system design meaning the component...
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    Where to from here? Again applying more...

    Where to from here?

    Again applying more structured thinking the application of an active crossover can be classified into some applications. This then enables a more specific focus on the active...
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