SP2 transformer coupled balanced or actively balanced?

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redsierra

Hello.

I have the SP2 and 9BSST.  I was looking at the amp manual today regarding the input sensitivity settings.  The manual says that the 1v setting is used when the source is single ended or from a transformer coupled balanced source.

The 2v setting is used when the source is actively balanced.

Which is the SP2?

Thanks,

Dwight

James Tanner

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Re: SP2 transformer coupled balanced or actively balanced?
« Reply #1 on: 1 Apr 2009, 01:38 am »
Hello.

I have the SP2 and 9BSST.  I was looking at the amp manual today regarding the input sensitivity settings.  The manual says that the 1v setting is used when the source is single ended or from a transformer coupled balanced source.

The 2v setting is used when the source is actively balanced.

Which is the SP2?

Thanks,

Dwight

Hi Dwight,

Actively balanced - but you can use either sensitivity. The gain will change by 6dB. I typically use the 1V setting.

james

redsierra

Re: SP2 transformer coupled balanced or actively balanced?
« Reply #2 on: 1 Apr 2009, 02:44 am »
Thanks James.

Is there an advantage or disadvantage to either setting besides the obvious of the 1v being louder?

werd

Re: SP2 transformer coupled balanced or actively balanced?
« Reply #3 on: 1 Apr 2009, 03:15 am »
Thanks James.

Is there an advantage or disadvantage to either setting besides the obvious of the 1v being louder?
Hi Redsierra

the 1 volt is more linear as the 2v setting i believe has a resistor that sits right in the signal path that reduces power to the output transistor. I believe that to be true but not sure. James however maybe better suited to answer that.

werd

Re: SP2 transformer coupled balanced or actively balanced?
« Reply #4 on: 1 Apr 2009, 03:20 am »
Thanks James.

Is there an advantage or disadvantage to either setting besides the obvious of the 1v being louder?

Hey Red

did u build that room with the vandersteens in mind or did u kinda fluke that off....   8) that HT looks hot. !!!

redsierra

Re: SP2 transformer coupled balanced or actively balanced?
« Reply #5 on: 1 Apr 2009, 12:57 pm »
Quote

Hey Red

did u build that room with the vandersteens in mind or did u kinda fluke that off....   8) that HT looks hot. !!!

Well, quite frankly I had VERY little choice as to how the room was built.  It's in a 30 year old house so the foot print was aready predefined by other existing basement development.  Then there was what I thought was a useless little room (the L shape to the left when you are looking at the screen) that I had no idea how to utilize.  So I just thought that I would incorporate it into the theater as being a sitting room.  The 3 sided fireplace was quite effective in cosmetically dividing the room up while not totally seperating it.  Then of course that little room serves as the all important walk up bar as well!  In terms of accoustics, I am quite certain that the shape of the room is less than ideal, but it works. We are happy with it becuase it is by no means a "dedicated" theater, and works quite well for visiting with company.  I did know that I was getting Vandersteens so I did work with the space as best I could to make them work.  The rear channels for instance clear the door by about a 1/4 inch!  I wouldnt mind selling the 3Cs and the 2WQs at some point and getting the model 5s to free up some room and make Wifey more happy!

Thanks for the compliments!

James Tanner

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Re: SP2 transformer coupled balanced or actively balanced?
« Reply #6 on: 1 Apr 2009, 02:23 pm »
Thanks James.

Is there an advantage or disadvantage to either setting besides the obvious of the 1v being louder?
Hi Redsierra

the 1 volt is more linear as the 2v setting i believe has a resistor that sits right in the signal path that reduces power to the output transistor. I believe that to be true but not sure. James however maybe better suited to answer that.


Hi,

Yes the 2 volt setting has 1 extra very high quality metal film resistor in series with the signal but because your driving the input with 2 volts instead of 1 volt you get a few dB better signal to noise ratio.

james