Yamaha Amplifier

[whoaru99]

Typically you'd use the style on the right to connect a signal input, such as the signal input to the amp in this case. The style on the left is typically for connecting to a signal output, such as the signal coming out of a preamp or mixer or some other source.

Technically, from a signal point of view, in this case it doesn't really matter since the jacks are strictly parallel. The 2nd set of jacks is simply for pass though/daisy chaining. However, I suggest staying with conventional practice/method, using the XLR with pin/male terminals.

Far as whether or not angle will work for you, you'll have to check the orientation of the key/terminals relative to the amp connector and the connector body to ascertain if it'll work out.

 

[Hifibythekg]

Thanks.
So I'll be plugging into this socket?

And the issue of balanced or not balanced, which will be my situation with a 'regular' pre amp or Chord Hugo dac?

 

[whoaru99]

Thanks.
So I'll be plugging into this socket?
View attachment 2101366

That would be the conventional/normal way, yes.

And the issue of balanced or not balanced, which will be my situation with a 'regular' pre amp or Chord Hugo dac?

The input connections to this amp will always be unbalanced despite having XLR jacks, because it's an unbalanced input. The schematic shows that to be true.

 

[Hifibythekg]

Thank you

 

[Hifibythekg]

Happy so far with your speaker protection unit solution? Please feel free to post a photo at some point if it’s convenient.

 

[whoaru99]

There's not much to see, but here it is. Could have used a little smaller box but I saw no reason to make it any extra work for fitment given the standalone nature.

It certainly provides a time delay and I'd expect it does the DC protection as it should, but hasn't been necessary for it to do so.

 

[Hifibythekg]

Thanks! Very neat.
So you’ve got two sets of speakers connected?

 

[whoaru99]

Just one set of speakers.

One pair of teminals (top in picture) are left/right "In" from the amp, the other pair of terminals are left/right "Out" to the speakers.

 

[Hifibythekg]

Ah, I see, silly me. Thanks.
And these devices are only available as diy kits? I guess that one can fit best quality components going this route though.

 

[Hifibythekg]

Are these the correct type of plugs to attach to the end of my existing RCA connects for pre-amp to P2200 duties?
If there are any brands or particular models that are best constructed I'm happy to hear. In the past I've always liked Switchcraft plugs.

https://cpc.farnell.com/pro-signal/psg08680/adaptor-xlr-to-phono-socket/dp/CN21224

 

[rickl]

i just checked my adapters I use on my P2250c

I bought RCAs and XLR plugs and wired like:

See https://forums.audioholics.com/forums/threads/rca-to-xlr-wiring.108362/:



kind of crufty but works

 

[avionic]

Are these the correct type of plugs to attach to the end of my existing RCA connects for pre-amp to P2200 duties?
If there are any brands or particular models that are best constructed I'm happy to hear. In the past I've always liked Switchcraft plugs.

https://cpc.farnell.com/pro-signal/psg08680/adaptor-xlr-to-phono-socket/dp/CN21224

View attachment 2101704

Yes...

 

[avionic]

i just checked my adapters I use on my P2250c

I bought RCAs and XLR plugs and wired like:

See https://forums.audioholics.com/forums/threads/rca-to-xlr-wiring.108362/:
View attachment 2101735


kind of crufty but works

View attachment 2101738

Accident waiting to happen...

 

[rickl]

Accident waiting to happen...

probably right... don't do what I do...

 

[whoaru99]

Ah, I see, silly me. Thanks.
And these devices are only available as diy kits? I guess that one can fit best quality components going this route though.

Dunno what all might be available. I just knew of that one and built it using the standard bill of material, then added the box and a normal grade of binding posts. I didn't see any point of using anything way better than what's on the amp itself.

 

[Hifibythekg]

Thanks, yes, makes good sense.

 

[Hifibythekg]

Well, it’s arrived in the post.
Pictures attached below.

Looks like it was stored for some time in a shed or an attic, loads of stuff settled on top of the components.

What do you think?
Are all the output transistors original?

And now should I...

A) Be grateful that it looks relatively untouched and disassemble and clean it up before even switching it on?
or
B) Try switching it on to see if it works and report back to the owner if it has serious issues?

Suggestions welcome!

The seller did say that it "worked fine" when connected up but, obviously, from this limited description there’s no way of knowing if it has a subtle hum or crackle etc etc.

 

[Hifibythekg]

Maybe a female mains UK 240V socket was fitted into the back at some point?

 

[whoaru99]

Normally if something is sold to me as "works (or worked?) fine" I'd want to verify it was acceptable to a reasonable person. Don't want get into a position where the seller say you caused a problem by tampering, if you feel compelled to contest the condition/function.

 

[Hifibythekg]

Thanks.
Obviously the only way to discover how the insides looked was by by taking off the cover. But is that tampering..?
But I'm just not sure which route seems best? A or B?