| Content | High-Tech in Professional Amplification!
The fP 3400 is a lightweight and space-saving power amplifier, ideal for use in
high quality touring sound systems as well as in demanding permanent installations.
Heat and cooling are fundamental problems in many extreme high power amplifiers
similar to the fP 3400.
In 1990, Lab.gruppen patented a high efficiency amplifier called fP 3400. This
development was an evolutionary step past the Class D amplifier. Lab.gruppen call
this unique step forward: Class TD. This stands for: Tracking Class D.
Class TD obtains the same high efficiency as Class D, while avoiding the main
drawbacks. Class D has a power-amplifier topology using Pulse Width Modulation
(PWM) to achieve high efficiency, but it needs a recovery filter between the output
stage and the loudspeaker.
Lab.gruppen?s Class TD amplifiers do not need this filter and this is one reason why
the Lab.gruppen Class TD obtains the same sonic quality as a traditional Class AB
amplifier.
Key Features
2 x 1100 watts @ 8 ?
2 x 1500 watts @ 4 ?
2 x 1700 watts @ 2 ?
(Measured just below clip level, with both channels driven)
Light weight and compact: only 10 kg (22 lbs), 2U high
MLS? Switch: Lab.gruppen?s unique power matching for different loads
Class TD design in flagship models (fP 6400 and fP 3400)
NEW FEATURES:
Replaces the LAB 2002
Multiple positions gain switch
Intercooler? cooling system with front-to-rear airflow and easily
accessible dust filters
Improved low-end power bandwidth
Link connector with XLR-type connector
Extruded front panel for increased stability
Bridged mono outputs in one SpeakOn connector
Besides the traditionally superb Lab.gruppen sonic performance, fP3400 offers a full line
of important features:
Regulated switch mode power supply Today
There are many lightweight, switch-mode amplifiers in the market. However, the unique
Lab.gruppen switch-mode power supply technology offers a number of essential advantages
that make it superior to other and seemingly similar power supply designs. The most
important features are the regulated power supply and the extreme power efficiency. The r
egulated power supply easily deals with a very high variation in the AC mains voltage:it
can drop by up to 20% below its nominal level ? e.g. to 180 V instead of 230 V ? without
any problem. Perhaps even greater benefits result from the extreme efficiency of Lab.gruppen
amplifiers: only a fraction of the energy from the AC mains is turned into heat.
A regulated power supply also presents some other sonic advantages, such as better cone
control and the same fast response as a conventional power supply.
Multiple positions Gain switch
To meet the demands for a flexible gain structure in the system, Lab.gruppen offers a multiple
position gain switch. The maximum amplifier gain can be set to all industry standards: 20, 23,
26, 29, 32, 35, 38 and 41 dB.
Sophisticated protection circuitry, combining:
DC protection; protects against infrasonic signals.
VHF protection; protects the loudspeakers against strong very high frequency non-musical
signals above the audible range.
Thermal protection; prevents the amplifier from being overheated. The protection indicators
on the front panel are switched on, as a warning, before the protection process is initiated.
AC protection; shuts down the power supply if the line voltage is outside the operating voltage.
Clip limiter; prevents severely clipped waveforms from reaching the loudspeakers, whilst
maintaining full peak power. | VLP Series Power Amplifier
- 1100W RMS Per Channel @ 4 Ohms, 1kHz, 0.1% THD
- 700W RMS Per Channel @ 8 Ohms, 1kHz, 0.1% THD
- 2200W RMS @ 8 Ohms, 1K Hz, 1% THD (Bridge Mode, Mono)
- Total Harmonic Distortion: Less Than 0.5% (20Hz - 20kHz @ 8 Ohms)
- Frequency Response: (+/-05db, @rated output Power, 8 Ohms): 20Hz - 20K Hz
- Slew Rate: 20V Per usec
- Damping Factor @ 8 Ohm: 450
- Impedance: 20 Ohms balanced / 10 Ohms unbalanced
- Cooling System: 2 high speed cooling fans
- Special Features: High/Low Pass Filter / Input Sensitivity Selector / Ground Lift / Limiter
- Dimensions (LxWxH): 17.75" x 19" x 3.5" / 453 x 482 x 88mm (2 rm spaces)
- Weight: 50 lbs. / 23 Kgs. |
This professional stereo power amplifier, working in class-H mode, provides 2x1600W, at an efficiency of around 85%.
A massive transformer based power supply and hand selected components makes this power rating possible with exceptional audio quality and absolute reliability, even in the 2 Ohm mode.
The output stage is fully protected against over-temperature, short circuit, RFI and equipped with soft start circuit and temperature-controlled fan cooling.
The integral soft clip limiter protects against damage to the connected loudspeakers.
The activity of a protective circuit, signal and limiter is shown for each channel by LEDʼs.
| AMPLIFIER SPECIFICATIONS |
|---|
| Power output stereo 2Ω: | 2 x 1600 Watt rms | | | Power output stereo 4Ω: | 2 x 1100 Watt rms | | | Power output stereo 8Ω: | 2 x 700 Watt rms | | | Power output bridged 4Ω: | 3200 Watt rms | | | Power output bridged 8Ω: | 2200 Watt rms | | | Frequency Response: | 20 Hz ÷ 20 kHz | | | Signal/noise rate: | > 102 dB | | | Crosstalk: | > 65 dB | | | Distortion (THD+N): | | | | Intermodulation: | | | | Damping factor: | 400:1 (8 W) | | | Slew rate: | 50 V/μS | |
| INPUT SECTION |
|---|
| Input connector: | 2 x XLR balanced, 6,3mm jack unbalanced | | | Input sensitivity: | 0 / 0.775 dBm/V RMS | | | Input impedance: | 20.000 kΩ | | | Controls: | Volume control for each channel | |
| OUTPUT SECTION |
|---|
| Output connector: | 2 x Neutrik Speakon 4 ways | |
| SYSTEM PARAMETERS |
|---|
| Cooling: | Two-speed fan | | | Protections: | Thermal, temperature, direct current, short circuit, RFI | |
| POWER REQUIREMENT |
|---|
| Operating voltage: | 220÷240 / 110÷120 ~ 50 / 60 V ~ Hz | | | Max.current: | 16 A | | | Power Consumption: | 6500 W | |
| PHYSICAL SPECIFICATIONS |
|---|
| Height: | 132 / 5.19 mm/inch | | | Width: | 483 / 19.01 mm/inch | | | Depth: | 455 / 17.91 mm/inch | | | Net Weight: | 29.5 / 65.03 Kg/Lbs | |
| SHIPPING INFORMATION |
|---|
| Package height: | 200 / 7.87 mm/inch | | | Package width: | 575 / 22.63 mm/inch | | | Package depth: | 555 / 21.85 mm/inch | | | Shipping Weight: | 32.5 / 71.64 Kg/Lbs |
| Amplifier Gain 32 dB
Continuous Rated Power
(1 kHz, THD 1%) 2Ω 2100 Watts
Continuous Rated Power
(1 kHz, THD 1%) 4Ω 1500 Watts
Continuous Rated Power
(1 kHz, THD 1%) 8Ω 900 Watts
Continuous Rated Power
(20-20 kHz, THD |
Crown DSi 4000 2x1200W-4Ω Power Amplifier
The Crown? DSi 4000 power amplifi er shall be a solid-state two-channel model
with a switch-mode universal power supply. A rear-panel HD-15 connector shall
provide input/output connectivity between the DSi amplifi er and the DSi-8M
System Monitor.
The outputs shall be usable as stereo or bridged-mono modes of operation.
The bridged-mono mode shall bridge the outputs to provide increased output
voltage.
Front panel controls and indicators shall include the following:
Level: Detented rotary level control, one per channel.
Power Switch: On/off switch applies AC power to the amplifi er.
Sel/Prev/Next Buttons: Three buttons near the LCD screen shall be used to
access menu items and front panel lockout.
LCD Screen: Backlit liquid crystal display shows speaker presets and signal
processing.
Signal Indicator: Green LED, one per channel, illuminates when a very low-level
signal is present at input.
?10 Indicator: Green LED fl ashes when output signal exceeds ?10 dB below
clip.
?20 Indicator: Green LED fl ashes when output signal level exceeds ?20 dB
below clip.
Ready Indicator: Green LED, one per channel, illuminates when the amplifi er is
ready to produce audio.
Clip Indicator: Red LED, one per channel, turns on at the threshold of audible
distortion.
Temp Indicator: Red LED, one per channel, illuminates under excessive temperature
conditions.
Power Indicator: Blue LED illuminates when the amplifi er has been turned on
and has power.
Rear panel controls and connectors shall include the following:
AC Line Connector: NEMA 5-15P (15A).
Input Connector: Two 3-pin removable Phoenix-type connectors each accept a
balanced line-level input signal.
Output Connectors: 4-position barrier strip with connectors for dual louspeakers
or bridge-mono loudspeaker.
HiQnet USB Connector: Type B, connects to a HiQnet network.
HD-15 Connector: For cinema I/O compatibility with DSi-8M System Monitor.
The amplifi er shall have the following specifi cations:
Output Power: 2 ohm Stereo (per channel): 1,600W with 1% THD, 4 ohm
Stereo (per channel): 1,200W with 0.5% THD, 8 ohm Stereo (per channel):
650W with 0.5% THD, 4 ohm Bridge-Mono: 3,200W with 1% THD, 8 ohm
Bridge-Mono: 2,400W with 0.5% THD.
Voltage Gain at 1kHz, 8 ohm rated output: 26 dB.
Frequency Response: +0/?1 dB from 20 Hz to 20 kHz at 1 watt into 4 ohms.
Load Impedance: Safe with all types of loads. Rated for 2 to 8 ohms in Stereo
mode, 4 to 16 ohms in Bridge-Mono mode.
Sensitivity at 8 ohm rated output: 3.61V.
Sensitivity at 4 ohm rated output: 3.47V.
Sensitivity at 2 ohm rated output: 2.84V.
Signal to Noise Ratio (below rated 8-ohm power at 1 kHz): 105 dB
(A weighted).
Damping Factor: Better than 500 from 20 Hz to 500 Hz.
Crosstalk: > 70 dB below rated power, 20 Hz to 1 kHz.
Input Stage: Input is electronically balanced and employs precision 1% resistors.
Input Impedance (nominal): 20 k ohms, balanced;10 k ohms, unbalanced.
Maximum Input Signal: +22 dBu typical.
AC Line Voltage and Frequency Confi gurations Available: 100V, 120V, 220-240V,
50/60 Hz.
AC Line Current: 8.0A.
At Idle: Draws no more than 90 watts.
Operating Temperature: 0° C to 40° C at 95% relative humidity (non-condensing).
The DSP section shall have the following specifi cations:
Input EQ: 6 parametric fi lters per channel with adjustable Q, ±15 dB boost/cut.
Also adjustable high and low shelving fi lters. This 8-fi lter EQ section can be
bypassed.
Crossover Filters: Highpass and lowpass per channel. Butterworth 6/12/18/24
dB per octave, Linkwitz-Riley 24/48 dB per octave. Also includes ±15 dB bandpass
gain and polarity control.
Output EQ: 8 parametric fi lters per channel with adjustable Q, ±15 dB boost/cut.
This 8-fi lter EQ section can NOT be bypassed. Filters are enabled individually.
Output Limiter: Prevents clipping and protects loudspeakers. Choice of ?3, ?6,
or ?12 dB threshold per channel.
Delay: Up to 50 msec total delay per channel.
Presets: 20 presets. One is ?DSP OFF.? Fifteen are factory-set for JBL Cinema
systems. Four are user-defi nable.
Protection shall include the following:
DSi-Series amplifi ers shall be protected against shorted, open or mismatched
loads; overloaded power supplies; excessive temperature; chain destruction
phenomena; excessive output current, and input overload damage. They also
protect loudspeakers from input/output DC, large or dangerous DC offsets and
turn-on/turn-off transients
The chassis shall be steel. Cooling shall be by a proportional speed fan with
front-to-rear airflow.
Dimensions shall be EIA Standard 19-in. rack mount width (EIA RS-310-B), 3.5
in. (8.9 cm) high and 12.25 in. (31.11 cm) deep behind mounting surface.
Net weight shall be 19 lb (8.6 kg). Shipping weight shall be 22 lb (10.0 kg)
The amplifier shall be designated the Crown DSi 4000.
|
HPS 2500 is a 2 channel power amplifier that delivers up to 2 x 1400 W RMS @ 2 Ω (2800 W RMS bridged @ 4 Ω).
XLR inputs for patching in signals as well as Speakon ports for connecting speaker systems are provided for the maximum flexibility.
A forced air cooling system maintains a low operating temperature.
| Features |
|---|
| Fast response and low distortion | | Easy to configure in stereo / mono / bridge modes | | Extensive protective circuits ensure high reliability and operating safety | | Front panel signal / clip / protect LED indicators | | Minimum load impedance (stereo / mono): 2 Ohm | | XLR input connectors | | SPEAKON output connectors | | 2 unit 19" rack, low weight for easy transportation | | Switchable Limiter |
| AMPLIFIER SPECIFICATIONS |
|---|
| Power output stereo 2Ω: | 2 x 1400 Watt rms | | | Power output stereo 4Ω: | 2 x 1100 Watt rms | | | Power output stereo 8Ω: | 2 x 700 Watt rms | | | Power output bridged 4Ω: | 2800 Watt rms | | | Power output bridged 8Ω: | 2200 Watt rms | | | Frequency Response: | 20 Hz ÷ 20 kHz | | | Signal/noise rate: | 106 dB | | | Damping factor: | > 300 | | | Slew rate: | 50 V/μS | |
| INPUT SECTION |
|---|
| Input connector: | xlr | | | Input sensitivity: | 1.4 dBm/V RMS | | | Input impedance: | 20 kΩ (balanced), 10 kΩ (unbalanced) kΩ | |
| OUTPUT SECTION |
|---|
| Output connector: | Speakon | |
| SYSTEM PARAMETERS |
|---|
| Cooling: | Forced | | | Voltage gain: | 32 – 26 dB | | | Amplifier class: | H | |
| POWER REQUIREMENT |
|---|
| Operating voltage: | 220 ÷ 240 V (50 / 60 Hz) V ~ Hz | |
| PHYSICAL SPECIFICATIONS |
|---|
| Height: | 88/3.4 mm/inch | | | Width: | 482/18.9 mm/inch | | | Depth: | 420/16.5 mm/inch | | | Net Weight: | 19/41,8 Kg/Lbs |
|
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