Summary of 121m
Page 2: X•tant
e.G. Of xtant quality that stands the test of time and the passing of fads. 2. Adj. Standing out or above, as in outstanding, the quality or state of being origi- nal. [from. L. Xstans (xstantis) n present...
Page 3: Welcome
Welcome we would like to personally thank you for choosing xtant technologies equipment. Our mission is to continually provide you with the best mobile audio – anywhere. Our goal is to exceed your expecta- tions. Our driving concepts are superiority through simplicity, flexibility, compatibility, re...
Page 4: Table of Contents
Table of contents safeguards 4 glossary of terms 5 xtant 121m 6 xtant 202m 7 xtant 404m 8 specifications 9 installation 10 optional accessory modules 15 adding accessory modules 16 121m low pass crossover 17 service jumper 17 troubleshooting 18 customer service 19 warranty 20
Page 5: Safeguards
Safeguards please take the time to read this owners manual. The following guidelines are designed to assure a safe and properly installed xtant mobile audio system. All xtant amplifiers and accessories are intended to be installed by a certi- fied mobile audio installation specialist. It is the reco...
Page 6: Glossary
Glossary the following terms are used in this manual. Since they may be unfamiliar, the following definitions are provided. Bridging: combining two amplifier channels into one channel. Typically used to create a high-powered mono output. Gain: the ratio of output voltage to input voltage. The gain o...
Page 7: Standard Features
Standard features regulated, pwm mosfet switching power supply discrete mosfet output circuitry mono design selectable 90 hz low-pass crossover balanced line input circuitry 40 db of input sensitivity – adjustable in 10 db steps two accessory module ports low impedance protection with diagnostic led...
Page 8: Standard Features
Standard features regulated, pwm mosfet switching power supply discrete mosfet output circuitry balanced line input circuitry 40 db of input sensitivity – adjustable in 10 db steps internally bridgeable two accessory module ports low impedance protection with diagnostic led thermal protection with d...
Page 9: Standard Features
Front inputs rear inputs output gain output gain front speakers rear speakers power connector output gain adjust horizontal accessory ports vertical accessory ports input gain adjust front ch . Front ch . Rear ch . Rear ch . Standard features regulated, pwm mosfet switching power supply discrete mos...
Page 10: Model
M series amplifier specifications model 121m 202m 404m watts per channel @ 4 ohms: 1 x 125 watts 2 x 50 watts 4 x 50 watts watts per channel @ 2 ohms: 1 x 250 watts 2 x 100 watts 4 x 100 watts bridged mono output @ 4 ohms: n/a 1 x 200 watts 2 x 200 watts frequency response: 5 hz to 50 khz 5 hz to 50...
Page 11
Installation all xtant amplifiers and accessories are intended to be installed by a certified mobile audio installation specialist. It is the recommendation of xtant technologies that your new xtant amplifier(s) and accessory module(s) as well as all of your mobile audio equipment be installed by yo...
Page 12
M series amplifiers are designed to operate from a car’s +12 volt, negative ground electrical system. The power and ground cables should be a minimum of 8 gauge. Depending upon the complexity of your system, larger gauge wire may be needed. The main power cable should run from the amplifier location...
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Antenna (remote) turn-on lead which will turn on the amplifier when the source unit is activated. If this is unavailable, a switched 12 volt source must be used. Run a wire from the amplifier location through the vehicle to the switched 12 volt source. Observe the same precau- tions for routing this...
Page 14
Deriving the mono channel is accomplished by using the left channel posi- tive wire as the positive speaker wire and the right channel negative wire as the negative speaker wire. It is important that a minimum 4 ohm imped- ance be observed. Inputs m series amplifiers feature rca inputs only. Run rca...
Page 15
I n p u t v o lta g e m u lt i p ly i n g f a c t o r input jumper multiplying factor +20 db = 10 +10 db = 3 0 db = 1 –10 db = .3 –20 db = .1 (ie: a head unit with 300mv output with input jumper @ +20db = 3 volts input) the input stage may be over-loaded by a high-level signal if the input gain is s...
Page 16: Optional Accessory Modules
Optional accessory modules xtant optional accessory modules are easily and quickly installed by your authorized xtant dealer. The upgrade modules snap into place on the amplifier’s pc board when the top of the unit is removed. These accessories enhance your entire system, expand- ing and customizing...
Page 17: Adding Accessories Modules
16 adding accessories modules xtant offers two types of accessory modules which are designed for either “horizontal” or “vertical” mounting. The docking port(s), located on the amplifi- er’s circuit board, labeled horiz acc port will accept any module, while the port(s) labeled “vert” will only acce...
Page 18: Using The Service Jumper
17 setting the 121m’s low pass crossover the 121m comes with an on-board, low pass crossover. This type of electronic crossover is needed when playing most subwoofer systems. The crossover is a 12 db per octave “butterworth” configuration with a fixed crossover frequency of 90 hz. The amplifier is s...
Page 19: Troubleshooting
18 troubleshooting diagnostic led’ s the red led indicates that the amplifier is on. The yellow led indicates that an over-current condition (low imped- ance) exist and will turn the amp’s output power down to maintain unin- terrupted operation. The yellow led will light if a speaker load falls belo...
Page 20: Customer Relations
Customer relations technical services statement of purpose our customer’s satisfaction is our purpose. You rep- resent our present and future. Our goal is to create and nurture relationships based upon trust and respect. This commitment is not taken lightly or just for today; it is our way of doing ...
Page 21: Limited U.S.A. Warranty
20 limited u.S.A. Warranty this warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Xtant technologies (xtant) warrants its products to be free from defects in materials and workmanship under normal use and service when the unit is installed b...