Wohler AMP-S8 Series User Manual Download Page 25

© 2006   Wohler Technologies  Inc.   ALL rights reserved

25

AMP-S8

 User Manual  P/N 

821640

  Rev-

B

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Channel Mix Selection:

    CHANNEL MIX Button 1-8

Press any of the eight 

CHANNEL MIX Buttons

 to activate the mixing (summing) feature. This mode is indicated by the

LCD Display

 showing 

MIX

 in the upper right and left of the display.   For example, as follows:

 MIX  AES1  MIX

 MIX  AES1  MIX

 MIX  AES1  MIX

 MIX  AES1  MIX

 MIX  AES1  MIX

            --

            --

            --

            --

            --

Each press of a 

CHANNEL MIX Button

 sequencially assigns the selected channel to the left, both, right, or neither

speaker channel. All eight channels may be mixed/summed in this way. With each successive button press, the color of the
associated

Channel Mix LED

, and the mixing/routing of that channel, cycles through the following sequence:

First Button Press:

  GREEN

 (routed to 

left

 speaker only),

Second Button Press:

GREEN/AMBER

 alternating (routed to both 

left

 and 

right

 speakers),

Third Button Press:

  AMBER

 (routed to 

right

 speaker only),

Fourth Button Press:

  OFF

 (not mixed or routed into either speaker).

Single Channel Selection:

FN Button

 + 

SINGLE Button

Single Channel Select Mode

 is enabled by pressing and holding the 

FN Button

 and then pressing the 

SINGLE Button

.

After entering this mode, each press of the 

L UP

 and 

L DOWN Buttons

 will cycle up or down through channel selections

for the 

left

 speaker, while the 

R UP

 and 

R DOWN Buttons

 will cycle up or down through channel selections for the 

right

speaker. In the 

LCD display

, the channel selections and speaker assignments are indicated by showing 

CH1

,

CH2

,

CH3

,

CH4

,

CH5

,

CH6

,

CH7

, or 

CH8

in the top left

and

 top right corners of the display.

Paired Channel Selection:

FN Button

 + 

PAIRS Button

Paired Channel Select Mode

 is enabled by pressing and holding the 

FN Button

 and then pressing the 

PAIRS Button

.

After entering this mode, each press of the 

L DOWN

or

R DOWN Buttons

 will step 

down

 through the channel pair

selections and each press of the 

L UP

or

R UP Buttons

 will step 

up

 through the same channel pair selections.  In the 

LCD

display

, the channel 

pair

selections and speaker assignments are indicated by showing 

CH1/CH2

,

CH3/CH4

,

 CH5/CH6

,

or

CH7/CH8

 in the top left 

and

 top right corners of the display respectively. The

CHANNEL MIX LED

s also indicate

these channel assignments by lighting up in the same manner as described in 

Channel Mix Selection 

section above.

Downmix Selection:

FN Button

 + 

DOWNMIX Button

Downmix Mode

 is enabled by pressing and holding the 

FN Button

 and then pressing the 

DOWNMIX Button

. Downmix

selections are cycled through using the 

L DOWN

 and 

R DOWN Buttons

or

 the 

L UP

 and 

R UP Buttons

.  In 

Downmix

Mode

 the user may select from seven different mix types for monitoring through the speakers.  Note that in the 

DM

downmix modes indicated, Channel 

4

 is not reproduced because it normally carries the LFE channel, which is below 200

Hz.

DM1:

 This downmix is most suitable for a loudspeaker or headphone downmix of a multi-channel program. 

Left

 and 

Left

Surround

 input channels mix into the 

left

 speaker, 

Right

 and 

Right Surround

 input channels mix into the 

right

speaker.

Center

 input channel mixes equally into 

both

 left and right speakers. Contribution of the 

Surround

 channel

mix is set by the 

Surround Gain

 entry (page 

30

) in the 

Setup Menu

.

 DM1

 is equivalent to one of the Japanese

ARIB Set 1 downmix formulas. See 

Diagram-A

, page 

33

.

DM2:

 This downmix can be used to create a two channel mix which could be further decoded to multi-channel program by

the use of an external 

Surround

 decoder.  Contribution of the 

Surround

 channel mix is set by the surround level

entry in the setup menu.

DM2

 is equivalent to one of the Japanese ARIB Set 2 downmix formulas. See 

Diagram-B

,

page

34

.

DM3:

Same as 

DM1

 but with surround level set to –3dB.

DM3

 is equivalent to one of the Japanese ARIB Set 3 downmix

formulas. See 

Diagram-C

, page 

35

.

4+4:

 In this downmix channels 

1

..

4

 are summed to the 

left

speaker, Channels 

5

..

8

 are summed to the 

right

speaker.

MXA and MXB:

 Select one of these two downmixes to "custom" mix by adding 

Channels 1-8

 into the 

left

 or the 

right

speakers using the 

CHANNEL MIX Buttons

 (see 

Channel Mix Selection

 above). Both 

MXA

 and 

MXB

mix

selections are stored and are available for recall with each cycling of the units power (On/Off).

MIX:

 This mode appears whenever the 

CHANNEL MIX Buttons

 are pressed.  The selection made in this mode is lost

whenever another mode is selected, or a preset is recalled.  Presets saved in 

MXA

 or 

MXB

 mode are recalled in this

mode

.

User Interface Function Guide

Section 2: 

 Operation

Selection  Modes

  (Cont.)

Summary of Contents for AMP-S8 Series

Page 1: ...DM1 DM2 andDM3DownmixBlockDiagrams Section 3 Technical Information GeneralTechnicalinformation BalanceControlCharacteristics AMP S8Series InterconnectBlockDiagram AMP S8 Series DA SDA HDA and MDA Mod...

Page 2: ...ent of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachme...

Page 3: ...FN Button press and release the PAIRS Button Use the R UP and R DOWN Buttons or L UP and L DOWN Buttons to cycle up or down through the channel pairs assignable to the left right speaker channels Chan...

Page 4: ...ES balanced or unbalanced outputs 8 channels from two selected SDI Groups FourAES EBU balanced inputs and loop throughs on a DB 25 connector EightAnalog inputs on a balanced DB 25 connector EightAnalo...

Page 5: ...d DIPswitchselectableonrearpanel 24dBubalanced 8 6 4 or 0 dBu 20 18 or 9 dBFS VU and PPM AES 32 48KHz auto select 24 bitlowjitter 104 dB SPL 6 or less at worst case frequencies above 140 Hz including...

Page 6: ...on of the audio feeds is straightforward Please refer to the system interconnect block diagram on page 40 for clarification of the general signal paths into and out of the AMP S8 Series units There ar...

Page 7: ...the User Interface User Interface Features User Interface Function Guide Section 2 NOTE Throughout the manual the following terms are used to refer to Serial Digital SDI signals SD SDI refers only to...

Page 8: ...ng these two recessed trimpot controls The left control adjusts the brightness of the left four LED bargraphs and the right control adjusts the brightness of the right four bargraphs Use a small flat...

Page 9: ...2006 Wohler Technologies Inc ALL rights reserved 9 AMP S8 Series User Manual P N 821640 Rev B Section 2 Operation Figure 2a Front Panel Features AMP1 S8 AMP2 S8...

Page 10: ...Output From SDI Connector Option for 2U SDA and MDA Models only This option is available only on the 2U rack SDA and MDA models When the CVBS Video Out option is specified a female BNC connector insta...

Page 11: ...2006 Wohler Technologies Inc ALL rights reserved 11 AMP S8 Series User Manual P N 821640 Rev B Section 2 Operation Figure 2b Rear Panel Features AMP2 S8DA AMP2 S8SDA HDA or MDA...

Page 12: ...OWN position to access the 919212 audio de embedder module Unbalanced AES PCM Input Connectors 1 4 AES1 and Termination In this input section there are four unbalanced female BNC input connectors 1 2...

Page 13: ...2006 Wohler Technologies Inc ALL rights reserved 13 AMP S8 Series User Manual P N 821640 Rev B Figure 2c Rear Panel Features AMP1 S8DA AMP1 S8SDA HDA or MDA...

Page 14: ...ware Upgrade function In the table shown the Analog Reference Level Analog left column is the analog input level needed to turn on the bargraph segment at the associated Digital Reference Level Digita...

Page 15: ...nnector is attached to the rear panel by a plate Under this connector and plate is the cutout for the optional DB 25 connector Inside the unit the HD 15 connector Item N is connected to an output PCB...

Page 16: ...t see Figure 2d page 17 The LCD Display provides the visual feedback and status indication for these operations Multi Mode Color Codes A mode within the context of this manual is understood to mean a...

Page 17: ...c ALL rights reserved 17 AMP S8 Series User Manual P N 821640 Rev B Section 2 Operation Figure 2c Major Operational Modes Submodes and Parameters Introduction to the User Interface Figure 2d Front Pan...

Page 18: ...or Item 7a above for a description of the function of these indication LEDs L UP SINGLE or Button Selection Navigation Using the UP and DOWN Buttons L UP or L DOWN Button The L UP and L DOWN and R UP...

Page 19: ...5 7 1 3 5 7 1 3 5 7 2 4 6 8 2 4 6 8 2 4 6 8 2 4 6 8 2 4 6 8 Source Status SD SDI Input 2 SDI Group Group 2 Input Lock Status Channels 1 2 3 4 5 6 7 8 Locked Mix Status Downmix DM3 SDI Group Group 1 Mi...

Page 20: ...through using the or Buttons and selections are accepted by pressing the Button The currently displayed menu may be exited by pressing the Button Current settable options in Setup Mode are Recall Pres...

Page 21: ...the second line of the display A moving block may also be present in these positions to indicate the instantaneous short time sample phase correlation The three positions are as follows Center Only on...

Page 22: ...Is Preset Mode required in order to use presets No you can Save and Recall presets 0 9 using the Setup Menu commands Save PSet and RCall Pset Also presets 1 4 can be saved and recalled using the front...

Page 23: ...d Gain SDI Delay Startup Analog Output Preference Setup Mode Menu Navigation Flow Chart Operational State Modes Enabling Mute States This Function Guide references the operation of the AMP S8 Series m...

Page 24: ...the default operational state of the monitor when selection modes operational state modes display modes and setup modes are not enabled In this mode the LCD display indicates the current operational s...

Page 25: ...ght corners of the display respectively The CHANNEL MIX LEDs also indicate these channel assignments by lighting up in the same manner as described in Channel Mix Selection section above Downmix Selec...

Page 26: ...this point will prompt the user whether to Keep Old Name where the existing name can be retained by pressing ENTER If the user presses ES C then they will be prompted for a new preset name as follows...

Page 27: ...ng Phase Correlation Indication Button Pressed by itself the Button enables the Phase Correlation Indicator in the LCD Display The average correlation phase for the selected channel pair is indicated...

Page 28: ...Setup Mode The display will indicate the software version number and the menu selection Setup RCallPSet if presets are saved Press theUPButton display changes to Setup SavePSet Press theUPButton agai...

Page 29: ...Air Preset1 Off Air Preset1 Off Air Preset1 Off Air Pressing the ENTER Button keeps the old name for the new preset Pressing the ESC Button results in a prompt for a new preset name as follows AES1 A...

Page 30: ...rational Mode Surround Gain Srnd Gain To change Surround Gain select Srnd Gain and then press the ENTER Button Surround Gain adjust screen display will indicate Setup Setup Setup Setup Setup Srnd Gain...

Page 31: ...own Up Down ESC ENTER Up Down Up Down ESC ENTER ESC ENTER 0 ms 20 ms Up Down ESC Enter 40 ms 60 ms Up Down Up Down 240 ms etc 260 ms 280 ms Up Down Up Down Up Down Normal Operation DONE ESC ESC Erase...

Page 32: ...eakers Mute LR Second press mutes the Left speaker Mute L Third press mutes the Right speaker Mute R Fourth press returns the unit to Unmuted normal operation Muting functions affect the signals to th...

Page 33: ...Diagram A AMP S8 DM1 Downmix Gain Output Input Gain Left Surround Input Gain Right Surround Input Center Input Left Input Sum Input Sum Input Input Sum Fixed 3dB 1 Root 2 Right Input Fixed 3dB a 1 Roo...

Page 34: ...ix Gain Output Input Gain Gain Sum Input Sum Input Input Input Sum Fixed 3dB 1 Root 2 Left Right Input Gain Output Output Gain Input Gain Input Gain Output Input Input Input Input Sum Gain Input Gain...

Page 35: ...Diagram C AMP S8 DM3 Downmix Gain Output Input Gain Left Surround Input Gain Right Surround Input Center Input Left Input Sum Input Sum Input Input Sum Fixed 3dB 1 Root 2 Right Input Fixed 3dB a 1 Ro...

Page 36: ...2006 Wohler Technologies Inc ALL rights reserved 36 AMP S8 Series User Manual P N 821640 Rev B Section 2 Operation This page left intentionally blank...

Page 37: ...hnologies Inc ALL rights reserved 37 AMP S8 Series User Manual P N 821640 Rev B Technical Information General Technical Observations Balance Control Characteristics AMP S8 Series Interconnect Block Di...

Page 38: ...it The signal pick off for the headphones is after the volume and balance controls Speaker muting is controlled by circuitry that senses connection of headphones to the jack The power amps are attache...

Page 39: ...right speaker channel will reproduce the midrange and high range frequencies of the Spanish speaking voice and the woofer speaker channel will reproduce the summed combined low range frequencies of b...

Page 40: ...2006 Wohler Technologies Inc ALL rights reserved 40 AMP S8 Series User Manual P N 821640 Rev B Section3 TechnicalInformation AMP S8 Series Interconnect Block Diagram...

Page 41: ...tic support documentation is available upon request Wohler Technologies Inc 31055 HuntwoodAvenue Hayward CA 94544 1 888 596 4537 Fax 510 870 0811 web www wohler com e mail support wohler com Wohler Te...

Page 42: ...hler Technologies Inc 31055 HuntwoodAvenue Hayward CA 94544 1 888 596 4537 Fax 510 870 0811 web www wohler com e mail support wohler com Wohler Technologies Inc 31055 Huntwood Avenue Hayward CA 94544...

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