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®

6

• Since it includes adjustable code groups, the user may inadvertently alter the installer configurations.

• Also, since the user will require IR commands from other brands of equipment to control the total system,

in addition to those of the PA1235, all commands should be consolidated into one learning device, for
ease of use.

APPLICABLE RC68+ BUTTON DESCRIPTIONS

1. IR 

Emitter Lens.

2. Instant Volume Presets.

 These commands allow ran-

dom access or direct preset activation of any of 12 fixed
preset levels on the PA1235.  This is useful when setting
up "audio scene" ambiance levels for rooms or partial
mute actions.

The RC68+ buttons that select a fixed level attenuation
below Max. volume are as follows:

RC68+ Button

PA1235 Level Attenuation in dB

38 (Mute ON)                    > 90 (Min. Volume)

10 (C & 01 on RC68)

60

00 (1)

52

C0 (2)

44

50 (3)

36

D0 (4)

30

40 (5)

24

A0 (6)

18

30 (7)

14

B0 (8)

10

20 (Treble Up Arrow)

6

E0 (Bass Up Arrow)

0 (Max. Volume)

3. OFF 

Command.  Turns the amplifier pairs (both LOCAL

and COMMON) to Standby OFF mode.  The "Standby
OFF" mode remains until the MUTE OFF command is
sent.

NOTE:

  This command is inhibited automatically when

the 

CI

 terminal is driven high with an external control

voltage. Refer also to items 9 and 11, 

Fig. 3

.

4. C-BAL 

Command. 

 

Instantly returns the balance to the Center position (equal volume in each channel)

from any previous setting.

5. Balance 

Commands.  When the Balance "arrow" buttons are pressed, the audio output will move to

the left or right (with a 2 dB/step reduction in the attenuated channel) with each left or right press.

NOTE: 

These commands do not ramp. That is, no change will occur if the BALANCE buttons

are held down continuously!

6. MAX-V

.  This command saves a maximum desired volume level for a zone or rooms (both LOCAL and

COMMON). The volume is first adjusted to what is desired as a maximum level.  The MAX-V button
is then pressed, locking in this setting.  This acts as a volume limiter for the system (e.g. to prevent
the kids from over-driving wall speakers, etc.).

To unlock the MAX-V setting, press the ADJ-OFF button (item #10).

Fig. 4

 

 

The RC68+ Programmer

1

A

B

C

ADJ-OFF

1

2

3

4

5

6

7

8

GLOBAL

Z-ADJ

TREBLE

VOL

MUTE

ON

OFF

E-FLAT

LAST

MAX-V

TRIM

OFF

C-BAL

BASS

INPUT

A

RC68+ PROGRAMMER

80

48

10

90

01

00

C0

50

D0

41

40

A0

30

B0

21

20

E0

70

F0

61

60

88

18

98

09

08

A8

38

B8

29

28

E8

78

F8

69

68

C8

58

D8

49

E1

89

C9

A9

E9

71

19

59

39

79

F1

99

D9

B9

F9

8

7

6

5

3

2

4

10

9

PA1235

Summary of Contents for PA1235

Page 1: ...arge single multiple filtered power supply delivers high quality at a reasonable price IR Controlled Volume Level Volume can be ramped from zero output to maximum for individual channel pairs or as gr...

Page 2: ...12 Volt common CO Control Output on the Xantech ZPR68 to power one or more PA1235 s ON and OFF automatically with first zone ON and last zone OFF commands Default settings As received from the factor...

Page 3: ...range within 5 dB of MAX V the LED color changes from Green to Red NOTE Red indicates that volume is approaching maximum not an indication of power output level 5 Line Inputs These RCA type jacks are...

Page 4: ...VDC output 9V 70 mA with ON condition 0 Volts output OFF Standby GROUND Ground for IR IN STATUS out CI in CI Control Input Use for control of Standby ON OFF of amplifier pairs if desired instead of b...

Page 5: ...l amplifier pairs item 11 except they apply to all amplifier pairs in common That is IR commands for Volume Mute etc control all amplifier pairs together NOTE Individual control of amplifier pairs is...

Page 6: ...en the CI terminal is driven high with an external control voltage Refer also to items 9 and 11 Fig 3 4 C BAL Command Instantly returns the balance to the Center position equal volume in each channel...

Page 7: ...s in the PA1235 are set to code group number A0 Be sure to set the RC68 to the same number It may be necessary to change the PA1235 amplifier pairs to different code groups if you wish to address each...

Page 8: ...nd screws supplied NOTE You should consider some sort of rear support for rack mounted units when used in mobile applications or when located in seismically active areas CONNECTING THE PA1235 When mak...

Page 9: ...For such applications use the STEREO mode Use the BRIDGED mode for single speaker higher power applications such as in surround sound systems Use speakers with an impedance rating of 8 Ohms minimum T...

Page 10: ...control to the RS41AV and the Source Components and to power the keypads and IR receivers three leads are connected between the CB18 and a 789 44 Connecting Block 6 Since a common IR bus is used to k...

Page 11: ...R CA AC 120V 60 HZ 4 AMP LEVEL RESET RIGHT 0 9 8 6 7 4 5 2 3 1 GND 12V CB18 Parallel Connecting Block 780 80 J Box IR Receiver ROOM 2 R L ST G V IR ROOM 1 R L Smart Pad 3 ST G V IR IR CONFIRM V V POWE...

Page 12: ...ion in each room It also carries a COMMON IR signal to a 789 44 Connecting Block for control of the RS41AV Remote Switcher and the Source Components 2 Note that the ZONE numbers on the 796 20 do not a...

Page 13: ...EKEEP IR The PA1235 has been designed specifically to work well with both Zone and All Zone ON OFF management as rendered by the ZPR68 10 In this example the STATUS GND output 0 to 12 VDC of each zone...

Page 14: ...IN G 12 IN G 12 IN G ZONE 6 ZONE 5 ZONE 4 ZONE IR INPUTS 12 IN G 12 IN G 12 IN G A B A B A B ZONE 4 ZONE 5 ZONE 6 12 OUT G SYLMAR CA MADE IN U S A ZONE EMITTERS ZONE EMITTERS 796 20 SIX ZONE CONNECTI...

Page 15: ...does not turn OFF when REMOTE input voltage goes to 0 Volts Be sure that the POWER switch item 3 Fig 2 is set to the MANUAL OFF Out position 5 PA1235 becomes very warm shuts OFF but does not come bac...

Page 16: ...z to 55 kHz Input Sensitivity Rated Power stereo mode Input Gain IR Controlled Setting Max 0 5 V Default 1 0 V Min Off Input Impedance LOCAL Inputs 22 kOhms COMMON AUDIO BUS Inputs 70 kOhms Power Sour...

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