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SRM-Flex Portable Column PA System

10.  Volume Knobs

The endless rotary volume knobs adjust the channel’s 

relative volume to the master bus. This allows signals 

from the outside world to be adjusted to run through  

each channel at optimal internal operating levels.

The main meters will display the input signal level 

(for that channel) as the knob is turned. The main 

meters will display the output level after five seconds  

of inactivity.

While the knobs may rotate endlessly, 

there are high and low parameters. In other 

words, you can’t keep cranking the input 

level past max – there is no “beyond max”. 

It also will not wrap around back to off and vice-versa.
•   Channels 1-4: –  dB (off) to +16.0 dB (max) 

•   Bluetooth:  –  dB (off) to +10.0 dB (max)

These knobs also act like momentary switches  

with three possibilities:
•   Push down and release to see the current input level. 

•   Push down and release three times quickly to zero  

out the current input level. 

•   Push down and hold for two seconds to see the peak 

input level.

11.  Reverb Send Knobs [Chs. 1 and 2]

These endless rotary reverb send knobs allow  

you to select the amount of reverb you would like  

to add per channel.

The main meters will display the reverb level (for that 

channel) as the knob is turned. The main meters will 

display the output level after five seconds of inactivity.

While the knobs may rotate endlessly, 

there are high and low parameters. In other 

words, you can’t keep cranking the reverb 

level past max – there is no “beyond max”. 

It also will not wrap around back to off and vice-versa.
•   Reverb levels:  

0% (off) to 100% (max)

EQ

RVB

LOW

HI

LOW

HI

10

11

12

13

14

19

15

17

18

These knobs also act like momentary switches  

with two possibilities:
•   Push down and release to see the current reverb 

level. 

•   Push down and release three times quickly to zero  

out the current reverb level.

Don’t hear any reverb? Make sure  

it’s turned on either via the SRM-Flex  

or SRM-Flex Connect app.

Channel Equalization (EQ)

Channels 1 and 2 have 2-band EQ with shelving hi  

and shelving low 

— low shelving at 90 Hz and high 

shelving at 6.0 kHz. “Shelving” means that the  

circuitry boosts or cuts all frequencies past the 

 specified frequency. For example, maxing the low EQ  

to 5 dB boosts bass starting at 90 Hz and continuing 

down to the lowest note you never heard and 6.0 kHz 

on up boosts the treble in the case of the high EQ

.

With too much EQ, you can really upset 

things. We’ve designed a lot of boost and cut 

into the equalizer circuit because we know 

that everyone will occasionally need that. But if you 

max the EQ, you’ll likely get mix mush. Equalize subtly 

and use cut as well as boost. If you find yourself repeat-

edly using a lot of boost or cut, consider altering the 

sound source, such as placing a mic differently,  

trying a different kind of mic, a different vocalist, 

changing the strings, or gargling.

12 and 13. Low and Hi EQ Knobs [Chs. 1 and 2]

These endless rotary EQ knobs allow you to boost  

and cut EQ to channels 1 and 2.

The main meters will display the EQ boost / cut  

(for that channel) as the knob is turned, with the 

center LED being 0 dB (flat). The main meters will 

display the output level after five seconds of inactivity.

While the knobs may rotate endlessly,  

there are high and low parameters.  

In other words, you can’t keep cranking  

the EQ levels past max – there is no  

“beyond max”. It also will not wrap around back  

to –15 dB and vice-versa.
•   Low EQ: 

–15 dB (cut) to +5 dB (boost) at 90 Hz 

This frequency represents the punch in bass drums, 

bass guitar, fat synth patches, and some really serious 

male singers who eat raw beef for breakfast.
•   Hi EQ: 

–15 dB (cut) to +5 dB (boost) at 6 kHz 

Use it to add sizzle to cymbals, an overall sense  

of transparency, or an edge to keyboards, vocals,  

guitar and bacon frying. Turn it down a little  

to reduce sibilance or to mask tape hiss.

SRM-Flex: Top Panel Features continued...

Summary of Contents for SRM-Flex

Page 1: ...OWNER S MANUAL...

Page 2: ...not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular instal...

Page 3: ...st right o Application voicing modes tailor the system to your application and venue Choose between Music Speech and Live Find the Perfect Reverb o Put the finishing touch on your sound with a choice...

Page 4: ...t s a good idea to pay attention to text displayed next to a note icon as this icon draws attention to certain features and functions relating to the usage of the SRM Flex The following steps will hel...

Page 5: ...directly into the channel 2 input Or if you use effects connect the guitar to the effects input and another cable from the effects output to the channel 2 input Note here that the mic line Hi Z switc...

Page 6: ...s to your company employees to the board stakeholders convention attendees or whatever other presentation you can think of the possibilities are endless Is there a post speech karaoke off Or maybe the...

Page 7: ...for the DJ to announce the couple s first dance and any someone with a blue truck license plate XYZ123 left their lights on announcements All the music is on a playlist on the DJ s laptop It s connec...

Page 8: ...set to mic switch left and a rad guitar to channel 2 mic line Hi Z switch is set to Hi Z switch right An analog synthesizer is plugged directly into stereo inputs 3 4 and a drum machine into the 1 8...

Page 9: ...extension modules and high frequency driver column fit into each other and the SRM Flex s base station subwoofer bottom into top see drawings on the bottom left with the grille s facing the same way...

Page 10: ...ired as follows according to standards specified by the AES Audio Engineering Society XLR Balanced Wiring Pin 1 Shield ground Pin 2 Positive or hot Pin 3 Negative or cold In addition to accepting a ba...

Page 11: ...el signal from a phone tablet MP3 player or other signal source NEVER connect the output of an amplifier directly to this input jack This could damage the input circuitry A Bluetooth connection and 1...

Page 12: ...e current reverb level Don t hear any reverb Make sure it s turned on either via the SRM Flex or SRM Flex Connect app Channel Equalization EQ Channels 1 and 2 have 2 band EQ with shelving hi and shelv...

Page 13: ...enue applications where speech is the primary audio source in need of clear and precise intelligibility Live This mode is flat perfect for singer songwriters and other live performers 16 Super Power B...

Page 14: ...and output levels as well as display the reverb send levels and EQ boost cut You can get a good mix with peaks flashing anywhere shy of the far right 3 4 LED bars SRM Flex will sound muddy and distort...

Page 15: ...ermal switch resets itself and the SRM Flex resumes normal operation If the thermal switch activates try turning down the level control s a notch or two to avoid overheating the amplifier Be aware tha...

Page 16: ...certain frequencies causing peaks and dips in the frequency response of the room It is better to place them on a sturdy stand designed to handle the weight Position the SRM Flex so the high frequency...

Page 17: ...t department at 1 800 898 3211 normal business hours Pacific Time to explain the problem They will tell you where the nearest factory authorized service center is located in your area If you think you...

Page 18: ...ck Handles One on the top panel of the base station Display LEDs Front Defeatable power Top Power Limiter Bluetooth Operating Temperature 0 40 C 32 104 F AcousticPerformance Frequency Range 10 dB 40 H...

Page 19: ...61mm 22 5in 572mm 17 0in 432mm 79 0in 2007mm DIMENSIONS 3 0in 76mm 2 8 71mm Accessories Included SRM Flex Carry and Cover Kit P N 2051980 00 Disclaimer Since we are always striving to make our product...

Page 20: ...mn PA System SRM FlexBlockDiagram Speaker Processing Hi Lo Amp Amp DAC DAC DAC Crossover Channel 1 Channel 2 Channels 3 4 Channels 5 6 Volume Volume Volume Volume Reverb Reverb DAC Master Volume Main...

Page 21: ...e noncompliance within the Warranty Period to the Company at www mackie com or by calling LOUD technical support at 1 800 898 3211 toll free in the U S and Canada during normal business hours Pacific...

Page 22: ...19820 North Creek Parkway 201 Bothell WA 98011 USA Phone 425 487 4333 Toll free 800 898 3211 Fax 425 487 4337 www mackie com...

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