What do the LARGE and SMALL settings refer to in the speaker setup menu?

The LARGE and SMALL settings do not refer to the physical size of the speakers, but rather to their ability to handle low bass/low frequency information. It is important to consult your loudspeaker provider's instruction manual to understand the capabilities of your system.

Is it necessary to use a subwoofer for all speaker systems?

It is strongly recommended to consider using a subwoofer, especially for systems that need to handle the low frequency dynamics of modern motion picture soundtrack sources. Choosing the SMALL setting, especially if using a subwoofer, ensures that all the appropriate low frequency information is directed to the subwoofer for effective handling.

What is the purpose of the Xtra Bass mode?

The Xtra Bass mode allows the subwoofer to be active even if the front speakers are defined as Large. This can be particularly useful for Pro Logic movie soundtracks.

Explanation of ‘Xtra Bass’ Mode | Bryston SP1.7PRECISION

The options available in this menu are:

For LEFT/RIGHT (LR) you can select SMALL OR LARGE

For CENTRE (C) you can select SMALL, LARGE or NONE

FOR SURROUNDS (SUR) you can select SMALL, LARGE or NONE

FOR BACK (BK) you can select NONE, ONE or TWO

FOR SUBWOOFER (SUB) you can select YES or NO

The SP1’s default factory settings as shipped are:

Left/Right = LARGE

Centre = NONE

Surrounds = SMALL

Back = NONE

Subwoofer = YES.

If only one back speaker is chosen, the signal will be present on the BACK LEFT OUTPUT only.

4.Once you have completed selecting the settings that match your particular speaker systems please move the cursor to the (X) and press SELECT to exit this menu.

NOTE: LARGE VS SMALL SPEAKER SETTINGS:

It is very important that you understand what is meant by the LARGE and SMALL settings in this menu. They do not refer to SIZE, but to the ability of the particular loudspeaker system to handle low bass/low frequency information. It is very important that you consult your loudspeaker providers instruction manual or the company regarding the capabilities of your particular system with regard to low bass/low frequency reproduction. Please note that all THX certified loudspeaker systems are SMALL since a subwoofer is a part of any THX certified loudspeaker system. It is strongly recommended that you consider using a subwoofer for any system which you expect to effectively handle the low frequency dynamics of modern motion picture soundtrack sources such as DVD or HDTV feeds, and many other discrete multi-channel programming sources. If in any doubt choose small, especially if you are using a subwoofer, since this will insure that all the appropriate low frequency information is directed to the subwoofer where it can be most effectively handled.