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08-03-2011 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,104
Joined on 10-12-2006

Post #: 1
Post ID: 16777
Reply to: 16777
Available Blenders and Splitters?
fiogf49gjkf0d
Something I see a lot of in studios is the "distribution amplifier", that joins and splits the audio (and/or "video") signals into any number of channels.  I believe I want buffering, but I am not ready to track and impliment the "balanced" configurations favored by studios, etc.

What I want may not be possible without giving up what I already have.  However, just in case I could wind up with what I think i want, here it is:

Start from the RCA output of my TAP (passive pre-amp; about 600 Ohms);  Make a center channel that includes a truly blended (not just "difference"...) Left and Right;  "Split" both Left and Right for FR and LF.

I think this is 5 "channels" from 1 (1:5).

I would prefer to stay away from any sort of DSP.  Level options would be a bonus.

Any ideas?

Paul S
08-03-2011 Post does not mapped to Knowledge Tree
scooter
Posts 161
Joined on 07-17-2008

Post #: 2
Post ID: 16780
Reply to: 16777
Interesting headphone blender
fiogf49gjkf0d
Hi Paul,
SPL out of Germany seems to have some interesting blending functions on their headphone amplifier. Not sure if they have other products that better suit your needs and didn't look to see if they are doing the processing in the digital or analog domain:
http://www.head-fi.org/forum/thread/563620/head-fi-tv-episode-009-spl-phonitor-heapdhone-monitoring-amplifier
S
08-03-2011 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,104
Joined on 10-12-2006

Post #: 3
Post ID: 16784
Reply to: 16780
Acceptable Distribution Amplifier?
fiogf49gjkf0d
Thanks, Scooter, I will check it out.  Meantime, I thought I should put a "recognizable" header on/in the thread...  At this point I am "ready" for DSP at ULF; but I still "draw the line" at that...   so far...

I suppose that part of the "problem" is that -  AFAIK - only NOS gear is analog...

Best regards,
Paul S
08-03-2011 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,104
Joined on 10-12-2006

Post #: 4
Post ID: 16785
Reply to: 16784
Unity
fiogf49gjkf0d
Looks like the SPL headphone amp thing-ee is mostly about generating/getting sound effects for/from headphones.  At this point, I think what I want is an "intact" signal at unity gain going to each of 5 channels.  This should mean that the blended, center channel is cut 3 dB (+/-) to compensate for the fact that it combines full L and R signals, and there would be 2X the usual L and R outs, each of which would run to its own amplifier/speaker.  I suppose that the traditional use of "amplifier" here refers to the gain (buffering) necessary to maintain unity and output impedance when the signal is split.  In other words, it is not the DSET-alike, rather, it is a line level function.

Best regards,
Paul S
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