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29.7.2014 : 20:49 : +0200
 

BREAKING NEWS

25.06.14 16:33

New Video with Nils Courbaron

Interview with Nils Courbaron and his amazing Songs with the new VGS SOULMASTER VSM120/7 and VGS...


23.04.14 10:02

News from the current VGS Root Production

Thommy and Manuel visited the VGS Root production and show you some details here...


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Katayama Acoustic Chamber AC1





  Our Rose- and Belle-Rose-Series VGS-Guitars are equipped with a sound-enhancing Katayama Acoustic Chamber. This provides...

~ balanced frequency accentuation, especially in bass and mid range frequencies.
~ mature sound, like a guitar that has been played for many years.
~ longer sustain and constant level of decay
~ widespread sound projection.
~ mild and mellow character.
~ clear and fast sound projection.
~ silky natural reverb.

Katayama Acoustic Chamber AC1
Japan Patent Pending No.2009-15839
China Patent Pending No.201080027787.0


>> Instruction Manual

Detailed Functioning

The graphs show the explicit difference caused by the Katayama Acoustic Chamber.


Sound waveform Graph

  Played guitar song "Sakura no Shirase" on same pattern
Horizontal direction = Time Ruler (Unit = MM:SS) /
Vertical direction = Amplitude Ruler (Unit = dB / -90 to 0 dB)

Frequency Analysis Graph

  Played guitar song "Sakura no Shirase" on same pattern
Green = with AC-1 / Yellow = without AC (normal)
Horizontal direction = Frequency Ruler (Unit = Hz)
Vertical direction = Amplitude Ruler (Unit = dB)
Graph type = Normal

Frequency Analysis Graph

  Played guitar song "Sakura no Shirase" on same pattern
Green = with AC-1 / Yellow = without AC (Normal)
Horizontal direction = Frequency Ruler (Unit = Hz)
Vertical direction = Amplitude Ruler (Unit = dB)
Graph type = Linear

Source: facebook, Jeri Fan Page


The Inventor


  Guitar expert Ichiro Katayama from Japan looks back on more than 35 years of experience in constructing and building musical instruments.
He pioneered the development of pickup systems for electro-acoustic guitars and acted in different departments of a well-known manufacturer, including R&D, production and diverse leading positions.
On his journey to a better sound he set sail with his own company in 2008.