M•2600 owner’s manual high-current power amplifier ™ o l – 3 – 6 –9 –2 0 – 3 – 6 –9 –2 0 s ig o l s ig c h 1 3 3 3 1 2 9 2 3 2 5 2 1 2 7 1 9 1 7 1 1 3 3 3 1 2 9 2 3 2 5 2 1 2 7 1 9 1 7 1 1 0 0 1 .2 3 v (+ 4 d b u ) s e n s it iv it y g a in /d b c h 2 p r o t e c t c o ld h o t s h o r t t e m p s t...
Caution avis risk of electric shock do not open risque de choc electrique ne pas ouvrir caution: to reduce the risk of electric shock do not remove cover (or back) no user-serviceable parts inside refer servicing to qualified personnel attention: pour eviter les risques de choc electrique, ne pas en...
3 part no. 820-078-00 rev. A 10/98 ©1998 mackie designs, all rights reserved. Printed in the u.S.A. Lend me your ears exposure to extremely high noise levels may cause per- manent hearing loss. Individuals vary considerably in susceptibility to noise- induced hearing loss, but nearly everyone will l...
4 read this page! 5. Determine which amp mode is best for your application: • stereo mode (separate left and right inputs, separate left and right outputs) is the typical setup for amplifying stereo signals. • mono mode (sometimes called dual- mono mode — one or two inputs, two mono outputs) is for ...
5 serial number manufacturing date risk of electric shock do not open caution 2600 watts 4 ohm load min. 120 vac 60 hz 2000 watts stereo typical ch 1 ch 2 + – – + mono bridge • the following are registered trademarks of mackie design inc.: "mackie", "fr series", and the "running man" figure • concei...
6 how to use this manual glossary: a haven of non- techiness for the neophyte just in case you’re new to the audio world, we’ve included a fairly comprehensive dictio- nary of pro audio terms. If terms like “clipping,” “noise floor,” “unbalanced,” or “groupie” leave you blank, flip to the glossary a...
7 contents quick start .......................................................... 4 application diagrams ......................................... 8 feature descriptions .............................................. 17 gain ............................................................. 17 meters ......
8 application diagrams the following pages show some of the more common uses for the m•2600, including stereo, mono, and bridged operation. Using the low cut filter the application diagrams include some small graphs of the frequency range going into and coming out of the amplifier. These graphs show...
9 serial number manuf a cturing d a te risk o f electric sh o c k d o no t o pen caution 2600 watts 4 ohm load min. 120 v ac 60 hz 200 0 w a t t s stereo typical ch 1 ch 2 + – – + mono bridge • the following are registered tr a demarks o f m ack ie design inc.: "mackie", "fr series", and the "runnin...
10 m•2600: main speakers and stage monitors with one amplifier serial number manuf a cturing d a te risk o f electric sh o c k d o no t o pen caution 2600 watts 4 ohm load min. 120 v ac 60 hz 200 0 w a t t s stereo typical ch 1 ch 2 + – – + mono bridge • the following are registered tr a demarks o f...
11 m•2600: eight monitor speakers-mono mode fr om mixing console monit or out serial number manuf a cturing d a te risk o f electric sh o c k d o no t o pen caution 2600 watts 4 ohm load min. 120 v ac 60 hz 200 0 w a t t s stereo typical ch 1 ch 2 + – – + mono bridge • the following are registered t...
12 m•2600: stereo system with two amplifiers in bridged mode serial number manuf a cturing d a te risk o f electric sh o c k d o no t o pen caution 2600 watts 4 ohm load min. 120 v ac 60 hz 200 0 w a t t s stereo typical ch 1 ch 2 + + – – + – – + mono bridge • the following are registered tr a demar...
13 louder quieter cr ossov er point frequency in hz frequency in hz output level db louder quieter output level db low out the output level rolls off above the crossover point. By setting the output application switch to low out (subwoofer), any speakers attached to the m•2600 will play only the low...
14 m•2600: stereo system biamped with subwoofers, option 1 serial number manuf a cturing d a te risk o f electric sh o c k d o no t o pen caution 2600 watts 4 ohm load min. 120 v ac 60 hz 200 0 w a t t s stereo typical ch 1 ch 2 + – – + mono bridge • the following are registered tr a demarks o f m a...
15 serial number manuf a cturing d a te risk o f electric sh o c k d o no t o pen caution 2600 watts 4 ohm load min. 120 v ac 60 hz 200 0 w a t t s stereo typical ch 1 ch 2 + – – + mono bridge • the following are registered tr a demarks o f m ack ie design inc.: "mackie", "fr series", and the "runni...
16 m•2600: stereo system biamped with bridged subwoofer serial number manuf a cturing d a te risk o f electric sh o c k d o no t o pen caution 2600 watts 4 ohm load min. 120 v ac 60 hz 200 0 w a t t s stereo typical ch 1 ch 2 + – – + mono bridge • the following are registered tr a demarks o f m ack ...
17 feature descriptions gain these front panel knobs allow you to control the levels going into the output section of the m•2600 amplifier. Their travel is detented, meaning there are 20 built-in “resting points” so you can easily set both controls to the same level. Usually, these controls are set ...
18 you may wonder why we didn’t use just one stereo control to control both sides. That’s in case your applica- tion requires a left/right imbalance (due to an irregu- larly shaped room) or if you’re using the two sides for completely different purposes (moni- tor in channel 1 and side-fill in chann...
19 short if this led comes on, the m•2600 has de- tected a short circuit in either of the outputs, meaning that the positive (+) and negative (–) speaker wires are touching, or a speaker itself is shorted out. Such a condition causes the m•2600 to engage its protect mode (when a signal is present), ...
20 serial number manufacturing date risk of electric shock do not open caution 2600 watts 4 ohm load min. 120 vac 60 hz 2000 watts ch 1 ch 2 + – – + mono bridge • the following are registered trademarks of mackie design inc.: "mackie", "fr series", and the "running man" figure • conceived, designed,...
21 what’s that? Why doesn’t the fan just go fast all the time? Well, if it did, you might actu- ally hear it whirring during your quiet moments (there are quiet moments in your life, aren’t there?). While this whirring would be of no concern in most live-sound situations, it could become annoying in...
22 speaker outputs the binding posts provide a secure and safe connection for bare speaker wire. To use the binding post outputs, unscrew them enough to reveal the holes on their sides, then insert your stripped wires (stripped about 3/8" back) into the holes and retighten the posts (finger tight is...
23 ordinarily, applying a positive voltage to a speaker’s positive input and negative voltage to the negative input results in an outward excursion of the woofer. But some woofers are built with reverse polarity, meaning that the above conditions result in an inward excursion. If you’re not sure whi...
24 you can connect an unbalanced xlr cable to the m•2600, although this would be unusual — as unusual as an unbalanced xlr output. However, if you have an unbalanced xlr connection to make, refer to the “connectors” section (appendix c) at the back of this manual for more information. The m•2600 amp...
25 10 hz 1 hz 100 hz 1k hz 10k hz 20k –15 db –10 db –5 db 0 db 5 db l c fil lev el, db frequency, hz 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 countercloc...
26 stereo mode (separate left and right inputs, separate left and right outputs) is the typical setup for amplifying stereo signals. Mono mode (sometimes called dual- mono — one or two inputs, two mono outputs) is for sending a mono signal to two different speaker sets, with separately-adjustable ga...
27 output application switch the output application switch should be configured before you turn on the amplifier. This switch allows you to choose between three different configurations: limiter on (typical). This is the normal configuration: full-bandwidth audio with protective limiting. Limiter of...
28 low out (subwoofer) here’s a special surprise: if you bought the m•2600 amplifier to power a subwoofer system, you just saved yourself the cost of a crossover! The m•2600 amp has an active crossover built in. The amplifier can play the frequencies below the crossover point set with the cross- ove...
29 general precautions and considerations ac power considerations be sure the m•2600 is plugged into an outlet that is able to supply the correct voltage speci- fied for your model. If the voltage should drop below 97% of the line voltage, the m•2600 will no longer be able to supply rated power. (it...
30 it is recommended that a stiff supply of ac power be used because the amplifier places high current demands on the ac line. The more power that is available on the line, the louder the amplifier will play and the more peak output power will be available for cleaner, punchier bass. A suspected pro...
31 70v distribution systems a distributed sound system uses a constant- voltage, high-impedance network that feeds a number of tapped transformers which, in turn, deliver power to individual speakers. Each tap is rated in watts, so you can select the amount of power delivered to the speaker. Develop...
32 appendix a: service info • if the output application switch is set to low out (subwoofer), make sure the low cut filter frequency control is set to off or nearly off. If it is turned up above the subwoofer cutoff frequency, the output from the amplifier will be diminished. • is the short led lit?...
33 as soon as the music gets loud, the amp shuts down! • check the m•2600’s meters. Be sure that ol is not lighting up frequently or continuously. • can the amp breathe? The m•2600 amps draw their ventilation air in from the front and out through the side panels. They need plenty of fresh air to sta...
34 appendix b: glossary clipping a cause of severe audio distortion that is the result of excessive gain requiring the peaks of the audio signal to rise above the capabilities of the amplifier circuit. Seen on an oscillo- scope, the audio peaks appear clipped off. To avoid distortion, reduce the sys...
35 referenced to 1 vrms across any impedance. Commonly used to describe signal levels in consumer equipment. To convert dbv to dbu, add 2.2 db. Decibel (db) the db is a ratio of quantities measured in similar terms using a logarithmic scale. Many audio system parameters measure over such a large ran...
36 eliminates frequencies below its cutoff frequency. There are also high-cut (low-pass) filters, bandpass filters (which cut both higher and lower frequencies but leave a band of freq- uencies in the middle untouched), and notch filters (which remove a narrow band but leave the high and low frequen...
37 maintaining proper circuit impedance rela- tionships is important to avoid distortion and minimize added noise. Mackie input and out- put impedances are designed to work well with the vast majority of audio equipment. Knee a knee is a sharp bend in an eq response curve, not unlike the sharp bend ...
38 q a way of stating the bandwidth of a filter or equalizer section. An eq with a q of .75 is broad and smooth, while a q of 10 gives a nar- row, pointed response curve. To calculate the value of q, you must know the center frequency of the eq section and the frequencies at which the upper and lowe...
39 appendix c: connectors (output from mixer), ring to signal return (input back into mixer), and sleeve to ground (earth). • balanced mono circuits. When wired as a balanced connector, a 1⁄4" trs jack or plug is connected tip to signal high (hot), ring to sig- nal low (cold), and sleeve to ground (...
40 speakons speakon ® connectors have become popular with many loudspeaker manufacturers be- cause they provide a quick, yet safe and secure method of connecting speaker cables. The con- nectors have a twist-locking mechanism that prevents them from being pulled out acciden- tally. Plus, they are ca...
41 sleeving on the drain wire (the one that connects to pin 1) to prevent it from contacting the connector shell. 2. Don’t connect the xlr connector shell to pin 1 of the xlr connector unless necessary for rfi shielding. Doing so is an invitation for a ground loop to come a-courting. 3. Do ensure th...
42 of rf interference and plan for them before you begin construction. Know the frequency, transmitter power, etc. You can get this information by calling the station. Remember that many broadcast stations change the antenna coverage pattern and transmitter power at night. 11. Don’t use hardware-sto...
43 the best way to accomplish this goal is to optimize the input and output levels for each component in the system. It is best to start at the beginning of the chain (the microphone) and work your way to the end (the speakers). The following procedure details how to opti- mize a sound system with 1...
44 biamplified and triamplified systems use separate power amplifiers to power each indi- vidual low-frequency and high-frequency driver. An electronic crossover (a.K.A. Active crossover) is located between the signal source and the power amplifier. The advantages of this method include: • increased...
45 appendix e: technical info “parallel” means that the positive amp out- put connects to the positive terminals of all the speakers, and the negative amp output con- nects to the negative terminals of all the speakers. If one speaker fails in a parallel con- figuration, the others will still work, ...
46 specifications m•2600 maximum power at 1% thd, midband: 500 watts per channel into 8 Ω 850watts per channel into 4 Ω 1300 watts per channel into 2 Ω 1700 watts into 8 Ω bridged 2600 watts into 4 Ω bridged continuous sine wave average output power, both channels driven: 425 watts per channel into ...
47 ac drop-out voltage: at approximately 63% of rated line voltage 19.00" (483mm) ventilation slots (do not cover) 17.24" (438mm) d ep th 1 5 .6 5 " (3 9 8 m m ) n o te : t h e d ep th is m ea s u re d f ro m t h e re a r fa ce o f th e ra ck e a rs 5 .2 " (1 3 2 m m ) 3 u o ve ra ll d ep th 1 6 .6 ...
48 block diagram + – + – ch.1 100 vdc + – ch.1 115 vdc + – ch.2 115 vdc to r oid al p ower transformer lamp fuse ma ckie designs m•2600 bl ock dia gram 9/21/1998 low cut fil ter cr ossover inver ter (for bridged mono opera tion) freq ch.1 gain ch.2 gain 60-90-120hz thr u–l ow–high limit–off -l ow ou...
49 typical performance graphs 1 20 100 1k frequency (hz) per cent age (%) 10k 20k 0.1 0.01 0.001 ch.1 thd & noise vs freq. (both channels driven) 1000w into 2 Ω 700w into 4 Ω 425w into 8 Ω 1 20 100 1k frequency (hz) per cent age (%) 10k 20k 0.1 0.01 0.001 thd & noise vs freq. Bridged mode 2000w into...
50 performance graphs 1 1 10 100 output power (w) per cent age (%) 3k 0.1 0.01 0.001 1k thd & noise vs output power into 4 Ω, bridged mode @ 20khz @ 1khz @ 20hz 1k 20 100 1k frequency (hz) damping f act or 10k 20k 100 10 1 ch.1 damping factor (into 8 Ω) vs frequency +10 20 100 1k frequency (hz) db (...
51 a. Mackie warrants all materials, workmanship and proper operation of this fr series product for a period of three years from the original date of purchase. If you complete the optional question- naire portion of the product registration card, the warranty will be extended for an additional two y...
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