User manual MACKIE M-2600
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Manual abstract: user guide MACKIE M-2600
Detailed instructions for use are in the User's Guide.
[. . . ] FULL SYMMETRY DUAL DIFFERENTIAL HIGH CURRENT DESIGN
PROFESSIONAL POWER AMPLIFIER
CH
OL 3v 21 2v 6 9 29 31 20 11 17 19 27 23 25 3
GAIN/dB GAIN/dB
CH
CH CH
3v
OL
1
INTERNAL STATUS PROTECT SHORT
2
1 2
21
23
25
3
2v
19
27
6
17
29
9
11
31
20
0 0
33 1v
0 0
33 1v
SENSITIVITY SIG SIG SENSITIVITY
1. 23v (+4dBu) 1. 23v (+4dBu)
TEMP STATUS CH 1& 2 COLD HOT
POWER
TM
CAUTION
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. REFER SERVICING TO QUALIFIED PERSONNEL.
WARNING:
SERIAL NUMBER MANUFACTURING DATE
1 CHANNEL
INPUT LOW CUT FILTER
TYPICAL 35 Hz
CHANNEL
CROSSOVER AMP MODE 60Hz
STAGE MONITOR 100 Hz OFF 170 Hz
2
CROSSOVER LOW CUT FILTER 90Hz INPUT
RISK OF ELECTRIC SHOCK DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE -- NE PAS OUVRIR
BALANCED OR UNBALANCED
CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC · WOODINVILLE WA · 98072 · USA · PATENTS PENDING · COPYRIGHT ©1998
· THE FOLLOWING ARE REGISTERED TRADEMARKS OF MACKIE DESIGN INC. : "MACKIE", "FR SERIES", AND THE "RUNNING MAN" FIGURE ·
120Hz
STEREO TYPICAL
MONO BRIDGED
60Hz
90Hz
120Hz
TYPICAL 35 Hz
BALANCED OR UNBALANCED
R
R
CH
MONO BRIDGE
HIGH-CURRENT POWER AMPLIFIER
1
+ +
+
CH
SUB WOOFE
SUB WOOFE
120 VAC 60 Hz 2000 WATTS
1300 WATTS / CH 2 OHM LOAD MIN. 2600 WATTS 4 OHM LOAD MIN.
STAGE MONITOR 100 Hz
2
MONO BRIDGE
CH's SUMMED
OFF
170 Hz
OUTPUT APPLICATION
M·2600 OWNER'S MANUAL
LOW OUT FULL RANGE (SUB WOOFER)
PIN 1+ CH2+ PIN 1 CH2 PIN 2+ & 2 NOT USED PIN 1+ BRIDGE+ PIN 1 BRIDGE PIN 2+ & 2 NOT USED
THRU
THRU IN SWITCHED OUTPUT
LOW HIGH OUT OUT
OFF
ON TYPICAL
HIGH LOW OUT OUT
THRU
THRU
PIN 1+ CH1+ PIN 1 CH1 PIN 2+ & 2 NOT USED
IN (CH1 & CH2)
SPEAKER OUTPUTS
CAUTION
LETHAL VOLTAGES MAY APPEAR AT OUTPUT TERMINALS. CLASS 1 WIRING IS REQUIRED
LIMITER
SWITCHED OUTPUT
CAUTION
AVIS
8. [. . . ] Connect the 1/4" TRS INPUT jacks on the first amplifier to the TRS 1/4" INPUT jacks on the second amplifier using 3-conductor shielded cables with TRS plugs on both ends. Warning: If you use a regular guitar cord with 2-conductor TS plugs, you'll unbalance the signal at the XLR input by grounding the low side () of the signal (pin 3).
2
COLD SHIELD
3 1
1
COLD 3 HOT
2
SHIELD COLD
1 3 2
HOT
Balanced XLR Connectors: Apollo/Soyuz Rendezvous
The M·2600 amp expects to see a nominal signal level anywhere between the 10 dBV "semipro" and +4 dBu "pro" standards, meaning almost any line-level mixer or other device can be plugged into the amp's INPUTs. Use controls to adjust the gain of the the GAIN amplifier to match the signal level you're using.
THRU and
THRU SWITCH
Someday you'll do a show at NudeStock and realize that one M·2600 amplifier is just not going to do the job -- you'll need a six-foothigh rack full of 'em to hide behind. It has three modes of operation, depending on the setting of the THRU switch : · THRU, a straight copy of what's going into the amplifier, nothing added or taken away from your big finish on spoons. · LOW OUT, the lower frequencies only, below the frequency set by the CROSSOVER switch . · HIGH OUT, the higher frequencies only, above the frequency set by the CROSSOVER switch . Note that the LOW OUT and HIGH OUT are also affected by the setting of the LOW CUT FILTER .
LOW CUT FILTER
Every woofer has frequency response specifications. It's usually expressed in Hertz (or cycles per second), like "40Hz300Hz. " The "40Hz" refers to the low-frequency point (usually, but not always) where the speaker's output drops by 3 dB, and will "roll off" completely as the frequency goes down. There is no point in sending a woofer any frequencies it can't reproduce -- you can't hear it, and worse yet, it's a waste of amplifier power that can be better used reproducing frequencies you can hear.
24
5dB
CROSSOVER SWITCH
This three-way switch allows you to set the crossover point of the internal CROSSOVER to either 60Hz, 90Hz or 120Hz. This affects two things: · The THRU output , if the THRU switch is set to LOW OUT or HIGH OUT. · The SPEAKER OUTPUTS , if the OUTPUT APPLICATION switch is set to LOW OUT. The amplifier then plays the frequency range below the crossover point. affects Note: The LOW CUT FILTER and the SPEAKER both the THRU outputs in the cases above. OUTPUTS
Level, dB
0dB
5dB 10dB 15dB 1Hz 10Hz 100Hz 1kHz 10kHz 20k
Frequency, Hz L C Fil Low Cut Filter Frequency Response
In order to match the output bandwidth with your particular speaker system, the M·2600 amplifier has a tunable LOW CUT FILTER. The frequencies are marked along the knob's travel : · Fully counterclockwise, the frequency is below 10Hz, effectively bypassing the filter. · Center detent is 35Hz and labeled TYPICAL, since precious few woofers actually go below that. · 3/4 of the way up is labeled STAGE MONITOR, 100Hz, perfect for stage monitors (they seldom reproduce below 100Hz; besides, it prevents low-frequency "leakage" into the house). So, grab your woofer's spec sheet and find the low roll-off spec. Then set the M·2600's LOW CUT FILTER at the same frequency. If you do this correctly (and make sure the are happy), you'll never again see meters your woofer moving sporadically without audible signal. Your system will play louder and cleaner, and you may never blow another woofer again!
AMP MODE SWITCH
This three-way switch, along with the OUTPUT APPLICATION switch , determines what kind of amplifier you want the M·2600 to be (or not to be -- what was the question?). The AMP MODE switch determines the input signal routing within the M·2600 amplifier. [. . . ] That lets you breathe a little easier (the show will go on), except that you may have a dead speaker and not even know it. Calculating parallel loads is also easy, as long as each speaker has the same value -- just divide the value by the number of speakers. For instance, four 8-ohm speakers, connected in parallel, will equal 2 ohms (8 / 4 = 2). If the loads aren't all the same, the formula gets a little more complicated, but nothing that you can't do with a simple calculator.
ZT = 1 1+1+1+ . . . [. . . ]
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