Basic questions

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Joined 2017
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Hi
While I feel like coming along pretty well with most threads, I... always stagger at those abbreviations.
Does somebody know of a lexicon of sorts to be found, that I could print out as my cheatboard?

Furthermore: there are builds that can be either a line-stage or a preamp. I guess the difference is that a pre has (optional) an input-selector and a volume-pot? Or is there more under the hood?
Thank you [emoji1317]
David
 
A line amplifier is a type of preamplifier (or else just a functional circuit). Usually both will have volume controls,
but a selector switch is optional for both. A line amplifier won't have a phono circuit, a preamplifier may or may not.
A preampifier is actually a very generic term, but it has been adopted as the name of a separate audio component.
Since the LP was waned, most preamplifiers are now actually line amplifiers, with phono preamps now separate.

Pro Audio Glossary
Glossary Of Technical Terms
Glossary - Teach Me Audio
 
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Many sources now have enough output voltage to drive many power amplifiers without further amplification.
A line amplifier could then be just a volume control pot, or a volume control followed by a circuit that may or
may not amplify (but which buffers the volume control from loading).
 
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Which way, does it matter?

Hi, I have a query and I hope that you can help me with.
I am starting out on building speakers and have no clue about electronics and would like to learn. To this end I am building my first speaker from a kit. The drivers I decided to get in Australia, but did not want to risk putting together the crossover, which I bought from the USA.

The crossover is put together as per wiring diagram of the speaker kit, except for one difference.
In the tweeter circuit, there is first a resistor going into a capacitor which feeds into a branch. First to an inductor which goes to ground. The second branch goes into another capacitor which feeds into a branch. The first goes into (according to the circuit drawing) an inductor, then into a resistor and then into a capacitor and then goes to ground.
On the circuit board supplied it is not as per the diagram. It is a sequence of capacitor into a resistor into a inductor, which then goes to ground.
I have queried this with the supplier, but would like to get a second opinion.

My question is, does it matter if the sequence is reversed and if so what would be the difference.

Another question is, are components usually mounted with the printing down? I would like to study how components are laid out, and, at a later date, maybe want a look again how it’s done. I don’t even know which way to point a capacitor in a circuit.

I can change the components around, but would really like a second opinion and maybe a short explanation.
The diagram in question is at Zaph|Audio - ZRT - Revelator Tower. I am building the enclosed version of the speakers.

I hope you can help me and clarify things.
Thank you
Werner

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