Friday, August 7, 2015

Sound Transformer - Performance Of Big Horn Stereo Speakers Is Better Than Predicted

The performance of the Big Horn Stereo Speakers is better than predicted by the Hornresp program simulator.  I believe this is because the shape of the barn attic functions as a very large horn flare for both channels.  Positioning the two bass horns under the roof slope appears to allow low frequency energy to couple into the room more efficiently than it otherwise would.  I tried calculating another version of the bass horns in Hornresp.  This time, I added another 32 inches of horn length on the mouth end.  This very large flare, if constructed as profiled in Hornresp, would be a square 91 inches on a side at the big end.  By adding the really big final flare to the 64 inch long horn and increasing the size of the driver back chamber, in Hornresp, you get a much smoother predicted response on the simulator.  I think that, even though the barn attic does not perfectly "connect" with the horns acoustically, the present combination does appear to enhance the performance of the "short" horns considerably.

Sound Transformer Plays "Slow Burn" by Betty Fox Band

Listen to The Sound Transformer, Pioneer SX1280 receiver, Sony D5 Discman, and "Slow Burn" by Betty Fox Band.  This is a demonstration of how faithfully a playback system like this can reproduce a really beautiful musical performance like this if it is properly recorded on a CD as Betty Fox's "Slow Burn" is.  The video linked below was recorded using a Panasonic DMC-ZS40 digital camera.  The digital camera does an amazing job although the audio quality and stereo "effect" are necessarily compromised by the limitations of the closely spaced (1/2 inch) stereo microphones built into the camera.  You would have to be in the room to truly hear the "live" sound coming from this system and to get a real appreciation of all of the sound recorded on the CD.  Well, here is the link to the youtube version:

Sound Transformer Plays "Slow Burn" by Betty Fox Band

Listening to this recording on this system "live" is almost like hearing these great musicians playing and singing "live".

Wednesday, August 5, 2015

Big Horn Speaker - Stereo Sound Transformer - Pioneer SX1280 - Sony D5 CD Player - Powerful Setup!

I have had the Pioneer SX1280 sitting on a table in storage for several years.  Today, I connected this SX1280 mega-receiver up to the Big Horn Speaker Stereo Sound Transformer. This is the biggest, loudest, FM radio receiver setup I have ever seen or heard.


Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!
Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!


Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!
Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!


Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!
Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!


Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!
Stereo Sound Transformer - Pioneer SX1280 - Giant FM Radio!

The Sound Transformer Bass Horns are the same height as the Victor packing crate I picked up at the dump a while back. 
Stereo Sound Transformer - Victor Packing Crate
Stereo Sound Transformer - Victor Packing Crate

 
Stereo Sound Transformer - Pioneer SX1280 - Sony D5 CD Player - Powerful Setup!

Transformer - Pioneer SX1280 - Sony D5 CD Player - Powerful Setup!
I connected the Sony D5 CD player and played some CDs on the giant setup.  There is some really clean and powerful sound coming from the horns now.