Lab.gruppen fp 2200 パンフレット
Current Technology
How much current is a 6400-watt amp going to draw? 60 A
from a 115 V mains line? 30 A from a 230 V line? It’s enough
to be concerned about tripping the breaker mid-show.
from a 115 V mains line? 30 A from a 230 V line? It’s enough
to be concerned about tripping the breaker mid-show.
Mathematically, the above calculation is correct. While a musical
signal might demand the amplifier to deliver as much as one-
third of its maximum power, most audio signals require less.
The remaining power provides headroom for dynamic peaks.
In the real world full power is only needed for very short
moments. Our R.SMPS™ power supply, with its energy stor-
age, is a great buffer for these short peaks. The mains breaker
can easily handle the excess of the current.
signal might demand the amplifier to deliver as much as one-
third of its maximum power, most audio signals require less.
The remaining power provides headroom for dynamic peaks.
In the real world full power is only needed for very short
moments. Our R.SMPS™ power supply, with its energy stor-
age, is a great buffer for these short peaks. The mains breaker
can easily handle the excess of the current.
Thanks to Lab.gruppen’s efficient amp design the average
mains current draw of an fP 6400 is in between 12–28 A @
115 V (or 6 A–14 A @ 230 V respectively), which isn’t a problem
for a standard breaker.
mains current draw of an fP 6400 is in between 12–28 A @
115 V (or 6 A–14 A @ 230 V respectively), which isn’t a problem
for a standard breaker.
Automatic Fuse Saver
(AFS™): If the amplifier does
attempt to draw a higher cur-
rent, then the AFS™
(Automatic Fuse Saver) kicks
in. AFS™ engages automati-
cally and limits the mains cur-
rent draw to a level that will
not trip the mains fuse/breaker.
(AFS™): If the amplifier does
attempt to draw a higher cur-
rent, then the AFS™
(Automatic Fuse Saver) kicks
in. AFS™ engages automati-
cally and limits the mains cur-
rent draw to a level that will
not trip the mains fuse/breaker.
* = AFS™ is utilized in the fP 6400.
Gain Flexibility
A professional amplifier should fit nicely into any sound system.
The reality is that some fit much better than others.
The critical question when integrating an amplifier into a system
is: ‘What’s the gain structure?’ There are many ways of
addressing the gain structure of the system, however, the
Lab.gruppen way is the simplest and most flexible. On the
rear panel is an easily accessible Multiple Position Gain
Switch. Selecting one of eight gain settings, ranging between
20 dB and 41 dB, enables you to maximize headroom and
eliminate clipped signals.
The reality is that some fit much better than others.
The critical question when integrating an amplifier into a system
is: ‘What’s the gain structure?’ There are many ways of
addressing the gain structure of the system, however, the
Lab.gruppen way is the simplest and most flexible. On the
rear panel is an easily accessible Multiple Position Gain
Switch. Selecting one of eight gain settings, ranging between
20 dB and 41 dB, enables you to maximize headroom and
eliminate clipped signals.
With eight fixed gain positions the Lab.gruppen amplifiers
can be precisely matched to the gain requirements of virtually
any loudspeaker system controller.
can be precisely matched to the gain requirements of virtually
any loudspeaker system controller.
The fixed gain positions allow the front panel controls to be set
at their maximum position, yet the overall gain is restricted
using the rear panel mounted switch. This feature protects the
whole gain structure from system tampering by ‘unauthorized
fingers’.
at their maximum position, yet the overall gain is restricted
using the rear panel mounted switch. This feature protects the
whole gain structure from system tampering by ‘unauthorized
fingers’.
Like all protection features in Lab.gruppen
amplifiers, AFS™ is seamless, transparent and
requires no action by the user.
amplifiers, AFS™ is seamless, transparent and
requires no action by the user.
Diagram illustrates multiple fixed gain setting switches.
Simply In and Out
The Neutrik Combo®
input jacks make bal-
anced connection to both
worlds, XLR and 1/4”
TRS plugs, as simple as it
gets. Using the additional
male XLR connectors,
multiple amps can be
linked together.
Paralleling the inputs on the same amp is accomplished with
a simple flip of a switch. No external cables are required and
the switch is conveniently located on the rear panel. All out-
puts are via Neutrik Speakon® connectors safe and world
standard.
input jacks make bal-
anced connection to both
worlds, XLR and 1/4”
TRS plugs, as simple as it
gets. Using the additional
male XLR connectors,
multiple amps can be
linked together.
Paralleling the inputs on the same amp is accomplished with
a simple flip of a switch. No external cables are required and
the switch is conveniently located on the rear panel. All out-
puts are via Neutrik Speakon® connectors safe and world
standard.
Ultimate Protection
Lab.gruppen fP Series amplifiers have all the necessary pro-
tection built in, not just to protect themselves but their loads
as well. The protection circuitry has an automatic reset, so you
do not need to do anything. In fact, the only additional protection
needed might be hearing protection…
tection built in, not just to protect themselves but their loads
as well. The protection circuitry has an automatic reset, so you
do not need to do anything. In fact, the only additional protection
needed might be hearing protection…
Thermal Protection: In the rare event that the amplifier
detects a thermal rise that may exceed its safe operating
region, then Thermal Protection will mute the affected amp
channel until it has cooled down. Recovery is automatic.
detects a thermal rise that may exceed its safe operating
region, then Thermal Protection will mute the affected amp
channel until it has cooled down. Recovery is automatic.
Adaptive Limiting System (ALS™): Our smart ALS™ is an
‘Adaptive Limiting System’ that continuously monitors the
output signal for excessive current supply. If this is detected
then the current is automatically cut back. This is a dynamic
system and is tailored by your choice of MLS™ setting.
‘Adaptive Limiting System’ that continuously monitors the
output signal for excessive current supply. If this is detected
then the current is automatically cut back. This is a dynamic
system and is tailored by your choice of MLS™ setting.
Clip Limiter: If for any reason, a distortion
level above 1% THD appears in between
the input and output, a Clip Limiter will
reduce the signal proportionally. The only
requirement for correct operation is that
the input signal is not overdriving the
amplifier channel input. The Clip Limiter is
the only protection that you can manually
defeat by recessed switches on the rear.
level above 1% THD appears in between
the input and output, a Clip Limiter will
reduce the signal proportionally. The only
requirement for correct operation is that
the input signal is not overdriving the
amplifier channel input. The Clip Limiter is
the only protection that you can manually
defeat by recessed switches on the rear.
VHF Protection: If the VHF Protection
circuit detects a spurious signal at the
output, above 12 kHz, at full power that
lasts longer than five seconds, the specific
amplifier channel will mute. This is a
critical feature that protects HF drivers
from oscillation.
circuit detects a spurious signal at the
output, above 12 kHz, at full power that
lasts longer than five seconds, the specific
amplifier channel will mute. This is a
critical feature that protects HF drivers
from oscillation.
AC Mains Voltage Protection: All fP
Series amps are immune to a broad
range of fluctuations in mains voltage.
However, if the mains voltage drops
below or rises above the allowed limits,
the amplifier will mute itself thanks to its
AC Mains Voltage Protection circuitry.
Series amps are immune to a broad
range of fluctuations in mains voltage.
However, if the mains voltage drops
below or rises above the allowed limits,
the amplifier will mute itself thanks to its
AC Mains Voltage Protection circuitry.
DC and Short Circuit Protection:
Naturally all Lab.gruppen amplifiers are
fully DC faults and Short Circuit protected.
Naturally all Lab.gruppen amplifiers are
fully DC faults and Short Circuit protected.
Neutrik Combo® input jacks adapt to both
worlds, XLR or 1/4” phone plugs.
worlds, XLR or 1/4” phone plugs.
High-frequency drivers
are well protected by
the automatic VHF-pro-
tection.
are well protected by
the automatic VHF-pro-
tection.
Indicators for VHF and
temperature protection.
temperature protection.
Lab.gruppen’s EMC testfacilities. 8,000 volts are being “shot” with this gun for testing
Simple I/O diagram
Recessed bypass
switch per channel for
the clip limiter.
switch per channel for
the clip limiter.
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