Martin Audio MA4.2s handleiding
Handleiding
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Martin Audio – MA4.2s Amplifier
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9
MA4.2s
MLS SWITCH SETTING
LOAD CONFIGURATION -5 dB -4 dB -2 dB 0 dB
16 ohms Stereo (2 channel) 220 w 260 W 410 W 650 W
8 ohms Stereo (2 channel) 430 W 520 W 820 W 1300 W
4 ohms Stereo (2 channel) 830 W 1000 W 1600 W 2300 W
2 ohms Stereo (2 channel) 1660 W 2000 W 2400 W 2900 W [1]
3050 W [2] 3200 W [2]
16 ohms Bridged mono 860 W 1040 W 1640 W 2600 W
8 ohms Bridged mono 1660 W 2000 W 3200 W 4600 W
4 ohms Bridged mono 3320 W 4000 W 4800 W 5800 W [1]
[1] Component tolerance dependent
[2] Continuous power, one channel driven or peak power both channels driven.
(Thermal protection may occur at high continuous power).
Power in watts (EIA 1 kHz, 1% THD)
Table 1.
5.4.1 The MLS technology :
MLS switches on rear panel
5.4.2 The problem:
If you assume that a power
amplifier can deliver 1000
watts into 8 ohms, and is
designed to be able to run
into 2 ohms. Theoretically, it
should be able to deliver
4000 watts into the 2-ohm
load.
Very few professional power
amplifiers are able to do this,
as all conventional power
amplifier designs are a
compromise between power
dissipation, costs, size etc. Most amplifiers can deliver only
70% or less of their theoretical power into 2 ohms. This is due
to resistive losses in the power supply and the use of current
limiting to protect the output semiconductor devices.
5.4.3 The solution:
The solution is to use a “Constant Power Converter”. The
converter is connected between the power supply and the
linear power amplifier. The main feature of the Constant Power Converter is that it can produce more current than it
takes from the power supply, and this way overcomes the losses in the power supply when driving low
impedances. As power is the product of current and voltage, an increase in current requires a reduction in voltage.
This reduction in voltage also causes the dissipation in the output devices to be lower. The current limit protection
Type of mode Power/Impedance
Ch.A Ch.B
Conventional mode 1300/8 1300/8
2100/4 2100/4
3200/2 3200/2
High voltage mode 104Vrms 104Vrms
1300/8 1300/8
650/16 650/16
Load matching 1300/8 1600/4
2300/4 2400/2
820/8 830/4
Power sharing 3200/2 1660/2
3200/2 2300/4
3200/2 1300/8
Limited power 1660/2 520/8
2000/2 820/8
1000/4 1000/4
Bi-amp mode 3200/2 2300/4
2300/4 1300/8
1300/8 650/16
2300/4 830/4
Table 2
All material © 2007. Martin Audio Ltd. Subject to change without notice.
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Productinformatie
| Merk | Martin Audio |
| Model | MA4.2s |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3550 MB |
