Bobby's Dad's thread....

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pennysdad

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OK Lee, (come out wherever you are), you might know something about this....

If I pull the mono module back panel, and disconnect the connector, it looks very much like that I can just run each side of this 7B as separate channels. Is this correct?
That whole module looks like it's just a bridging device. Is that correct?
Also, according to the schematic, I don't need to do anything extra if I'm just happy enough to run this unbalanced. Is that correct too?

Whaddaya say ol' chum?

 
orange

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He was probably asleep at around 4 am Mountain Daylight Time :laughing4:
 
laatsch55

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I'll have Joe look at it, I have ideas but am not 100% certain. That center module does look like a bridging/ bal/unbal variant.
 
Gepetto

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bobbysdad said:
OK Lee, (come out wherever you are), you might know something about this....

If I pull the mono module back panel, and disconnect the connector, it looks very much like that I can just run each side of this 7B as separate channels. Is this correct?
That whole module looks like it's just a bridging device. Is that correct?
Also, according to the schematic, I don't need to do anything extra if I'm just happy enough to run this unbalanced. Is that correct too?

Whaddaya say ol' chum?

Click to expand...

Hi BD
Do you have the entire schematic you could email me? Have to look at the whole thing to answer your question.
 
pennysdad

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... actually, the more i stare at that module's schematic, i can't see why i just can't add another xlr, and rewire it to stereo by just re-routing the second balancing IC.
 
pennysdad

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NavLinear said:
It seems that there is a logic circuit (4081 AND gate) controlling the mute relay.

http://www.doctronics.co.uk/4081.htm
Click to expand...
Well I've read that this amp does have an external mute function, (24v powered ?)
... but I don't see anything on this particular back panel to accommodate that.
I wonder if the Sonics version has been modified.
..... better have another look then. (BIG SIGH)
..... and I wanted to go to bed too!
Oh well, first things first. Back in a flash......
 
pennysdad

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Nope, nothin' in there but an amplifier.....

The mono module is nothing like the real Bryston one.
All very bare bones with no switches or anything, and only one IC
Looks just like I said. I think I can connect straight in....
(it's those two single grey wires.)

 
Gepetto

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Will have to take a careful look. I think this amp was set up in a bridged mode so we have to be careful to see if it is properly ground referenced for separate stereo operation.
 
pennysdad

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if I could power up this sucker, i'd just wire up some signal to it and go for it, but, i don't have a stepdown transformer yet, so it'll just have to wait.
..... and it's gonna drive me crazy 'till i do!
 
pennysdad

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Gepetto said:
Will have to take a careful look. I think this amp was set up in a bridged mode so we have to be careful to see if it is properly ground referenced for separate stereo operation.
Click to expand...
Take your time Joe.
I won't have a s/d transformer (240v - 110v) 'till the end of next week, so there's definitely NO urgency for this.
I so appreciate your help tho'

George
 
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