Not being an engineer with common engineering knowledge can sometimes cause issues in ones brain, so here I am and I am going to do my best to ask the question.
Lets look at a specif amplifier, the XA60.8. It is a mono amplifier so can only accept either left or right audio signal. It is also fully differential. The buffer stage takes the incoming signal and sends the (-) to the left output stage and the (+) to the right output stage (OS) (seen from above). Each of the output stages has a + and - out since its differential. They can be used for stereo and mono operation as in the same output card is found in the XA30.8 stereo amplifier as well as in the XA60.8 monoblock which we are using as an example.
Now it gets a bit more complicated: As lined out above, the buffer / gain stage, are sending only portion of the sinewave to the OS, meaning each of the output stages see only half of the sinewave, half of the polarity and so naturally, both sides are needed to operate the loudspeaker since the loudspeaker need its full sinewave.
With each of the output stages having one set of +O / -O and a + and - binding post, the XA mono platform have 4 sets of binding pots.
Question: How does the internal bridging work - are the binding posts bridged as in: (Left +<bridged>+ right) and (Left -<bridged>-Right) either binding post pair can be used to operate the loudspeaker ??????
Quoted source: https://www.dagogo.com/pass-laboratories-xa200-8-pure-class-monoblock-amplifiers-review-part-1/
Lets look at a specif amplifier, the XA60.8. It is a mono amplifier so can only accept either left or right audio signal. It is also fully differential. The buffer stage takes the incoming signal and sends the (-) to the left output stage and the (+) to the right output stage (OS) (seen from above). Each of the output stages has a + and - out since its differential. They can be used for stereo and mono operation as in the same output card is found in the XA30.8 stereo amplifier as well as in the XA60.8 monoblock which we are using as an example.
Now it gets a bit more complicated: As lined out above, the buffer / gain stage, are sending only portion of the sinewave to the OS, meaning each of the output stages see only half of the sinewave, half of the polarity and so naturally, both sides are needed to operate the loudspeaker since the loudspeaker need its full sinewave.
With each of the output stages having one set of +O / -O and a + and - binding post, the XA mono platform have 4 sets of binding pots.
Question: How does the internal bridging work - are the binding posts bridged as in: (Left +<bridged>+ right) and (Left -<bridged>-Right) either binding post pair can be used to operate the loudspeaker ??????
Quoted source: https://www.dagogo.com/pass-laboratories-xa200-8-pure-class-monoblock-amplifiers-review-part-1/
This topic have been resolved thanks to Desmond Harrington from PASS LABS who so kindly answered via email.
I then asked: Do I understand you correctly if the binding posts are bridge internally, (+ to +) and (- to -) ?
So there we go.
XA 60.8
monoblock
two red output posts are shorted internally
two black output posts are shorted internally
means - convenient for bi-wiring, nothing less, nothing more
monoblock
two red output posts are shorted internally
two black output posts are shorted internally
means - convenient for bi-wiring, nothing less, nothing more
Yes, that is how things are - I found no picture which showed such a connection, but internally bridged is the only approach which technically makes sense since there are two OS boards.
no, since XA60.8 is mono block
number of OS sections is irrelevant
if starting question was - what's internal connection arrangement of two red and two blacks