Marantz PM-15S1 manual ITU International Telecommuni Cation Union, Before Making Connections

ENGLISH

BEFORE MAKING CONNECTIONS

SPEAKER POSITIONING FOR SUPER AUDIO MULTI-CHANNEL SOUND

In order to enjoy Super Audio CD multi-channel sound with the best possible acoustics, it is recommended to position speakers as specified in ITU-R BS.775-1 of the International Telecommunication Union (ITU). Super Audio CD multi-chan- nel discs are recorded and mixed so as to achieve the opti- mum effect with a speaker system laid out as specified in ITU- R BS.775-1.

•With Super Audio CD multi-channel discs, the music sig- nals are basically recorded using 5 channels (3 - 6 chan- nels sometimes), but in some cases, LFE (for subwoofer) is recorded as a sixth channel. Each disc indicates how many channels have been recorded on it.

•The basic layout is 3 speakers in the front and 2 in the back since multi-channel discs usually have 5 channels. The 2 front, 1 center and 2 surround (rear) speakers should be set in a circle around the listening point as shown below. If us- ing speakers of differing sizes, adjust volume balance from the amplifier.

•The location of the subwoofer in the figure is just for ex- planatory purposes. It can be located anywhere in the room. For connection and positioning instructions, see the instruc- tion manual that came with the subwoofer.

7ITU (International Telecommuni-

cation Union)

The ITU is a special organization of the United Nations. It consists of a number of organs, one of which is the Radio Broadcasting Section.

ITU-R BS in the recommendation which consists of standards relating to broadcasting (audio) operations, one of which is the ITU-R BS.775-1 which governs “multi-channel stereo sound systems.”

Sub-woofer	Center
	speaker
Front speaker	Front speaker
(Left)	(Right)

approx. 110° approx. 110°

Reference listening

position

Rear speaker	Rear speaker
(Left Surround)	(Right Surround)

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