Step Two - Measure Speaker Distances; Step Three - Manual Setup Menu; Speaker Size Menu - Harman Kardon AVR 145 Owner's Manual

INITIAL SETUP
The frequency response for your subwoofer will usually cover only the
very lowest frequencies, since the subwoofer is only designed to play
bass materials. A typical frequency response for a subwoofer is 25Hz –
150Hz. In this case, the higher number is most important and should be
noted in the worksheet.
The purpose of programming this information into the AVR 145 is to
program the receiver's bass management, which determines which
speakers the receiver will use to play back the low-frequency (bass)
portion of the source program.
If you send the lowest notes to small satellite speakers, you won't hear
these notes very well, and you may even damage the speaker by going
beyond its capabilities. If you send the highest notes to the special-pur-
pose subwoofer, you may not hear them at all.
With proper bass management, the AVR 145 divides the source signal
at a crossover point. All information above the crossover point is played
through the satellite speaker (front left/right, center or surround
left/right), and all information below the crossover point is played
through the subwoofer. This enables each loudspeaker in your system to
perform at its best, delivering an enjoyable sound experience.
Step Two – Measure Speaker Distances
Ideally, all of your speakers were placed in a circle, each at the same
distance from the listening position. However, your room may not be
ideal, and you may have had to place some speakers a little further
away than others. This could affect the overall sound of the receiver,
as sounds that are supposed to arrive simultaneously from different
speakers blur, due to different arrival times.
Fortunately, the AVR 145 has a delay adjustment that enables the
receiver to compensate for real-world speaker placements.
Before you begin making adjustments, measure the distance from each
speaker to the listening position, and note it in the worksheets in the
appendix. Even if all of your speakers are the same distance from the
listening position, you should enter your speaker distances.
Step Three – Manual Setup Menu
Now you are ready to program these adjustments into the receiver. It's
best to sit in the usual listening position and make the room as quiet as
possible. Don't worry if you make a mistake; you can always go back
and change these settings.
With the receiver and video display turned on, press the OSD Button on
the remote. Use the Button on the remote to move the cursor to the
¤
MANUAL SETUP line, and press the Set Button to display the Manual
Setup menu.
26
Figure 36 – Manual Setup Menu Screen
The Manual Setup menu is the gateway to four submenus. The first
three menus – Speaker Size, Speaker X-over and Delay Adjust – are
described here. The fourth menu – Channel Adjust – is described in the
Advanced Functions section.

Speaker Size Menu

Press the Set Button to display the Speaker Size submenu.
Figure 37 – Speaker Size Menu Screen
The Speaker Size menu lists each of the speaker groups. You will be
programming the correct setting for each group, indicating how many
speakers are in your system and what their capabilities are, based on
the information you obtained in Step One – Determine Speaker Size.
Each of the main speaker groups can be set to one of three settings:
LARGE, SMALL or NONE. These settings don't refer to the physical size
of the speaker, but rather to the size of the frequency range of each
speaker. These may or may not turn out to be the same.
If the lower number of the frequency response for your speakers is less
than 100Hz, choose the LARGE setting. If this number is 100Hz or
greater, choose the SMALL setting. If you don't have a speaker con-
nected to that position, choose NONE.
As you can see, the system requires you to use both speakers in a pair.
For example, you can't connect just a front left speaker without a right
speaker, or just a right surround (rear) speaker without a left one.
However, you can connect only the front speakers, or both front and
surround speakers without a center, or the front left/right and center
speakers without any surrounds.