Speck SSM-24 Operation Manual Download Page 27

          Chapter 4

    Operation Section 

The dual Synth Trim Control simultaneously adjusts the gain (level) of 
the left and right channel inputs.  Its normal operating or starting 
position is when set fully counterclockwise.  In order to help maintain 
the extremely high frequency response and low noise characteristics of 
the Model SSM, utilize this control only as needed. 
  
If an individual synth or sampler proves too weak, it is good practice to 
add level by first pushing up the channel's slide fader if possible, or by 
making sure that the synth or sampler plugged into that channel is set to 
its maximum output.  Should these adjustments fall short, then turn the 
Synth Trim Control clockwise until the required mixing level is 
obtained.  Repeat this procedure each time a new patch, or sample is 
chosen. 
 
 
The equalization section has two independent signal paths and utilize 
dual pots that simultaneously adjust the left and right parameters of the 
equalizer. 
  
The equalizer for the SSM is a semi-parametric type, whereas the 
Frequency Sweep Control adjusts one of the parameters, and the Boost/
Cut Control adjusts the second of the parameters.  The third possible 
parameter available on a parametric equalizer would be the frequency 
bandwidth adjustment.  The bandwidth (Q) for the low, mid, and high 
bands on the SSM equalizer are fixed at approximately 12db/octave. 
 
This control provides 15db of bell shaped Boost or Cut for the high 
frequency range (5K to 15Khz), and is used in conjunction with the 
High Frequency Sweep Control (see below).  0db boost/cut (flat) is 
obtained when this control is set to its center position. 
 
The High Frequency Sweep Control is used in conjunction with the 
High Boost/Cut Control and provides continuous adjustment from 5Khz 
(fully counterclockwise) to 15Khz (fully clockwise). 
 
This control provides 15db of bell shaped Boost or Cut in either the low 
band (50 to 500hz) or mid band (500hz to 5khz) frequency ranges 
dependent on the position of the Low/Mid Band Select Switch (see 
below).  This control is used in conjunction with the Low/Mid Sweep 
Control.  0db boost/cut (flat) is obtained when this control is set to its 
center position. 

1. Synth Trim Control 

3. High Frequency 

Sweep Control 

2. High Boost/Cut Control 

22

 

Refer to Figure 3 for location of items 1 thru 16. 

Equalizer Section 

4. Low and Mid 

Boost/Cut Control 

Summary of Contents for SSM-24

Page 1: ...Operation Manual S y n t h a n d L i n e M i x e r l Model SSM 24 l Model SSMEX 16 l Model SSMEX 32 MODEL SSM...

Page 2: ...ing from improper installation alteration or unauthorized parts or repairs If the product is modified by the customer without permission the customer agrees to pay for parts and labor necessary to rem...

Page 3: ...ries Regulated power supply Rack mount adapters Interface Harness Optional Accessories SSM 16 Input Expander Assign 28 Subgroup Module Microphone Preamps Rack Mount Slide Tilt Adapter Expression Pedal...

Page 4: ...Cleaning Interfacing Expanders Mounting location Installing the Interface Cable Expander pin assignment Interfacing the Assign 28 Mounting location Connecting the Assign 28 Expression Pedal Connecting...

Page 5: ...eneral Start simple Audio Cable Multipair wire harnesses Connectors Proper AC Grounding Quality AC system AC distribution Clock noise and AC Safety earth connection Electronics earth Proper Audio Grou...

Page 6: ...perly wired receptacle before making any audio connection to the mixer A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation Upon loss of t...

Page 7: ...2 Figure 1 Front Panel Layout Chapter 1 Introduction Section...

Page 8: ...Figure 2 Rear Panel Layout 3 Chapter 1 Introduction Section...

Page 9: ...cts devices The SSM has a comprehensive master section that allows the synth player to maintain total control over all equipment connected to the mixer The mixer is divided into three basic sections T...

Page 10: ...to a wide range of professional situations The SSM mixing system is available in three models the SSM 24 12 stereo input channels the SSMEX 16 Expander 16 mono channels and the SSMEX 32 Expander 16 s...

Page 11: ...ched at each end Shorter cable lengths are available from the factory The Model SSM is prewired for input expansion With the addition of the 16 input Expander and its interface harness a SSM Mixing Sy...

Page 12: ...be installed in any input position of the Main Unit or the Expander Mike preamps are not available on stereo input channels The SSM main unit or 16 channel Expander may be fitted with an optional rack...

Page 13: ...10k Ohms 10k Ohms 10k Ohms 10k Ohms 600 Ohms 10k Ohms 600 Ohms 10k Ohms 150 Ohms All line outputs are designed to drive a 600 ohm load and may be operated into any load 600 ohms or greater Direct Out...

Page 14: ...i polar 16 5 volts DC 1 3 Amp 120 VAC 1 0 Amp Dimensions SSM Main Unit Dimensions SSM Expander Dimensions Power Supply HxWxD 15 75 x 19 x 4 25 400mm x 483mm x 108mm HxWxD 15 75 x 19 x 4 25 400mm x 483...

Page 15: ...nevertheless be planned to avoid locating the SSM optional SSM Expander or any low level audio equipment immediately adjacent to power amplifiers power supplies or any source of Electromagnetic emiss...

Page 16: ...repair to be accomplished Include the model number and serial number of the product Place the product in the original container if available If the original container in not available a suitable one c...

Page 17: ...ional Expander may be affixed to standard E I A rack rails using 8 10 32 machine screws The location of the SSM and Expander should be such that the operator has a clear unobstructed view of the front...

Page 18: ...power switch The power supply should not be installed directly above or below the mixers It is recommended that it be installed in the rear of the equipment rack providing that it remains at a reasona...

Page 19: ...before reconnection to the mixer The following chart represents the proper AC terminal configuration for the Model PS3 1 5 power supply The following chart represents the proper fuse rating for the Mo...

Page 20: ...unding terminal should be used when it is necessary to connect the SSM and Expander to a qualified ground This ground terminal should not be relied upon as a source of ground for other electronic equi...

Page 21: ...s should be set centered All pushbutton switches on the front and rear panel should be set to the out position and the three toggle switches at the rear should be set in the up position When any futur...

Page 22: ...be made to modify or extend this cable Any attempt to modify or extend this cable could result in extreme noise oscillation hum or buzzes or total failure of the Model SSM Before connecting the SSM Ex...

Page 23: ...eturns that may be interconnected to the 8 effects returns of the Model SSM This would require 16 cables It is recommended that multipair harnesses be used in lieu of numerous single cables For more c...

Page 24: ...order to operate the volume pedal The following chart represents the audio connections available at the 6 pin DIN connector at the rear of the SSM main unit PIN 1 INSERT OUT RIGHT PIN 2 INSERT OUT LEF...

Page 25: ...ccept any stereo synth signal and all controls and switches in the signal path will simultaneously adjust the parameters of the left and right signals The mono input channel accepts a single mono synt...

Page 26: ...Chapter 4 Operation Section 21 Figure 3 Input Channel...

Page 27: ...ameters and the Boost Cut Control adjusts the second of the parameters The third possible parameter available on a parametric equalizer would be the frequency bandwidth adjustment The bandwidth Q for...

Page 28: ...arger knobs are numbered 5 thru 8 top to bottom Each stereo channel also incorporates an effects Sum Split switch located at the rear When this switch is in the Sum position the source for effects sen...

Page 29: ...d any left right position set by the Pan Balance Control to the stereo mix will be maintained when the In Place Solo Switch is depressed The direct outputs on each input channel also remain unaffected...

Page 30: ...nnels Mono Switch is enabled this control acts like a traditional pan pot placing the mono signal anywhere in the stereo left right perspective The stereo input channel employs a dual linear motion sl...

Page 31: ...Chapter 4 Operation Section 26 Figure 4 Effects Send and Return Channel...

Page 32: ...ng of approximately two to three o clock could yield an adequate level of effect when matched with an effects unit that is properly operated at a professional input output level of 4dbm This control a...

Page 33: ...Chapter 4 Operation Section 28 Figure 5 Master Section...

Page 34: ...th all the solos on the SSM only the monitor and or headphone outputs are affected Effects returns may be individually muted or unmuted even if the Group Master Solo is activated This is a convenient...

Page 35: ...lows talkback to the stereo program 1 4 and XL outputs The signal to the stereo monitor feed is muted when the Talkback Switch is enabled This control adjusts the volume of the talkback circuit to the...

Page 36: ...optimized for a passive pedal which will always afford far better sonic results than its active counterparts Remember the moment you insert a powered pedal at this point you are subjecting your entire...

Page 37: ...recording console and solo capability desired then it is completely acceptable to utilize the solo capable monitor outputs for this purpose The integrity of this signal is virtually equivalent to tha...

Page 38: ...ster Control does not affect the operation of the program level or monitor level This standard 1 4 stereo phone jack will operate with any impedance headphones This jack is identical in operation to t...

Page 39: ...Chapter 4 Operation Section 34 Figure 6 Cue Click Aux Return Sections...

Page 40: ...Return Control adjusts the level of an external stereo cue source and returns only to the monitor master and or the headphone outs This control allows the Cue Return to be panned anywhere in the stere...

Page 41: ...of Speck s Assign 28 subgroup module to be routed to the monitor and or headphone outputs of the SSM The Stereo Aux Return Section includes the return level control the return pan control the return m...

Page 42: ...Chapter 4 Operation Section 37 Figure 7 Input Channel Connectors and Switches...

Page 43: ...the equalizer slide fader mute switch or kill switch The insert jacks may be used to connect limiters additional equalization noise gates etc The direct output jack provides a line level signal for c...

Page 44: ...ociated XL mike input connector is only available on a mono input channel and is identified with a grey pushbutton immediately above the four 1 4 jacks The absence of any switch in this position indic...

Page 45: ...Chapter 4 Operation Section Figure 8 Effects Send and Return Connectors 40...

Page 46: ...connector utilized on the effects unit phone RCA XL barrier strip etc Each effects return provides two discrete unbalanced 1 4 T S jacks for connection from the outputs of a left right stereo effects...

Page 47: ...Chapter 4 Operation Section Figure 9 Master Input Output Connectors 42...

Page 48: ...ilable 4dbm or 18dbm The 6 pin DIN connector provides a convenient interface to any passive stereo volume pedal via an optional interface cable This connector provides a stereo send and stereo return...

Page 49: ...am feed connectors are available for interface to the input of an external console stereo tape recorders etc The use of the balanced XL connectors does not affect the operation of the unbalanced 1 4 c...

Page 50: ...on allowing a second set of stereo headphones to be connected to the SSM Although not required it is recommended that headphones of the same type and impedance be used when using the front and rear he...

Page 51: ...Chapter 4 Operation Section Figure 10 Cue Click Aux Return Connectors and Switches 46...

Page 52: ...r pin configuration for the Cue XL connector There is always the possibility that a balanced cue feed provided by for example a control room to the SSM may in fact be 180 degrees out of phase with the...

Page 53: ...grees out of phase with the SSM s balanced input This is the result of a non conforming pin out configuration being applied to the SSM s balanced connector When the Phase Switch is in the normal posit...

Page 54: ...ereo mix The nominal setting factory preset for this trim control is fully clockwise The main program left right feed and VU meter levels of the SSM remain unaffected by this adjustment of the Program...

Page 55: ...Chapter 4 Operation Section Figure 11 Expander and Power Supply Connectors 50...

Page 56: ...ower supply cable The connectors are keyed so they will only fit in one direction For installation instructions refer to the Interface Section of this manual This grounding terminal should be used whe...

Page 57: ...itor power amp and then add one synth to the mixer at a time carefully listening and monitoring your progress If a problem arises such as a buzz hum intermittent signal or nonexistent signal stop at t...

Page 58: ...rocessor based equipment When using a larger rack system it is recommended that a dedicated and isolated AC service be provided This service should have its own AC wires isolated receptacle and breake...

Page 59: ...resistance That will most likely be your audio equipment and would result in unwanted buzzes or hums In order for any audio signal such as a synth signal to get from the synth to the mixer it require...

Page 60: ...I emissions generated by other electronic devices There are natural and man made sources of EMI that you can t do anything about These sources include radio TV and radar transmitters as well as motors...

Page 61: ...anual of each piece of audio equipment for specific details Due to the lack of standards for XL connectors some equipment may use pin 3 of the XL for the high signal For this configuration connect pin...

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