Table of Contents
Advertisement
Quick Links
Audio Bi-Amplifier, 40W, Mono, 2-Way Active Crossover
Model XAMP-M2
Assembly and Operator's Manual
Rev 5.1.2
Xkitz.com
Features
• 2-way active cross-over drives dual amplifiers for driving separate woofer and tweeter
• Linkwitz-Riley crossover, 4
• Uses the highly respected LM4766 Chip Amp to produce 40W peak on both woofer and tweeter
• Crossover frequency configuration components are on a single socketed module - quick and easy to change
the XO frequency by simply snapping in a new module.
• Wide range of standard XO frequency modules are offered by Xkitz, any frequency available on request
• Baffle Step Compensation, optional, adjustable and configurable to support various baffle sizes
• Supports unbalanced signal inputs by default, balanced audio signaling is available as an add-on option.
Unbalanced signals are connected via standard RCA jacks
Balanced signals are connected via optional 3.5mm TRS jack. The TRS jack is wired to be directly
compatible with the new hi-def audio players such as the Pono
• Specifications:
THD:
THD+N:
Frequency Response
CMRR (balanced input):
Input Impedance
Input Overload:
Voltage Gain:
Power Output Per Channel:
Filter Topology:
Amplifier Type:
Power supply:
• Applications:
• Active Monitors
• Speaker Bi-Amp conversions
• Bi-Amp'ed Active Speaker System
• Portable boom-box
• Portable guitar amplifier
• Custom speaker systems
• Channels are phase aligned to within a fraction of a degree to minimize distortion around the XO frequency
• Separate bass and treble output level adjustments via on-board multi-turn trim-pots
• Low power consumption and no negative supply needed - perfect for portable battery powered speakers
• Quiet power ON / power OFF
• This is a mono device, two units are needed for stereo operation
• PCB Dimensions: 3.4" x 3" x 2" high (86mm x 76mm x 51mm)
• This is an intermediate electronic kit containing 85 components, and can be assembled in about 1-2 hours
6/17/2017
order, 24dB/Octave roll-off
th
0.044%
0.046%
Linear from 20Hz – 80KHz
> 55dB
20K ohms unbalanced, 40K balanced
3.8V peak-to-peak
Adjustable, Max 26dB
12W RMS into 8 Ohms, 21W RMS into 4 Ohms
Linkwitz-Riley, Constant Voltage, 4
Class AB
Single positive DC rail (no negative supply required) 22V–50V DC
Order, 24dB/octave
th
1
XKITZ XAMP-M2
Advertisement
Table of Contents
Related Manuals for Xkitz XAMP-M2
Summary of Contents for Xkitz XAMP-M2
- Page 1 XO frequency by simply snapping in a new module. • Wide range of standard XO frequency modules are offered by Xkitz, any frequency available on request • Baffle Step Compensation, optional, adjustable and configurable to support various baffle sizes •...
-
Page 2: What You'll Need
When the wire fills up with solder, move a clean part of the wire over the hole and repeat until the hole is clear of solder. 6/17/2017 XKITZ XAMP-M2... -
Page 3: Circuit Board Assembly
Circuit Board Assembly You're ready to begin assembling your XAMP-M2 circuit board. Assemble the board in the order listed in Table 1. The components for the standard kit (in bags marked ‘Bag A’ and ‘Bag B’) support the default configuration: UNBALANCED signal mode. - Page 4 13. Install the amplifier chip. Attach the LM4766 to the heat sink loosely with the screw and nut. Insert the assembly and solder the chip pins and the heat sink tabs. Tighten the screw to secure the chip to the heat sink. 14. Leave these locations empty. They are not required for this kit. 6/17/2017 XKITZ XAMP-M2...
- Page 5 Figure 1. PCB Parts Placement and Dimensions 0.12" 3.4" Board Height: 2.0" 6/17/2017 XKITZ XAMP-M2...
-
Page 6: Heat Sinking
Heat Sinking The XAMP-M2 includes a heat sink to remove heat from the LM4766 amplifier chip. This heat sink is sufficient for lower power applications. For applications that are expected to run at high power for long periods of time, you may want to attach an additional heat sink to augment the existing one. - Page 7 The crossover (XO) frequency is determined by the value of the ten resistors mounted to a 20-pin socketed component carrier called the ‘XO Module’. All 10 resistors are set to the same value. Xkitz offers a wide range of standard XO Module frequencies at this location: https://www.xkitz.com/collections/active-crossovers-and-bi-amplifiers-1/products/xo-module-for-use-with-...
- Page 8 Max Woofer Output Voltage vs. Power Supply Voltage and Driver Impedance Power Supply 4 Ohm Speaker 8 Ohm Speaker Volts DC Volts RMS RMS Watts Volts RMS RMS Watts 5.9V 6.2V 6.4V 6.8V 6.9V 7.5V 7.5V 8.3V 8.1V 9.0V 8.6V 9.4V >34 9.2V 10.0 6/17/2017 XKITZ XAMP-M2...
-
Page 9: Power Supply
On the XAMP-M2 there is no real advantage to using a supply voltage greater than 34V, as this won’t lead to any higher power output, and will only cause more unnecessary heat for you heat sink to dissipate. - Page 10 Figure 3. Woofer, 2.83V into 8 Ohms (1W) THD=0.038% THD+N=0.041% Figure 4. Woofer Full Output, THD=0.054% THD+N=0.049% 6/17/2017 XKITZ XAMP-M2...
- Page 11 Figure 5. Tweeter, 2.83V into 8 Ohms (1W) THD=0.044% THD+N=0.046% Figure 6. Tweeter Full Output, THD=0.12% THD+N=0.11% 6/17/2017 XKITZ XAMP-M2...
- Page 12 Figure 7. XAMP-M2 Schematic 6/17/2017 XKITZ XAMP-M2...
Need help?
Do you have a question about the XAMP-M2 and is the answer not in the manual?
Questions and answers