FP 6400
The fP 6400 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 extreme high power amplifiers such as the fP 6400. Already in 1990, Lab.gruppen patented a high efficiency amplifier, in fact an evolution of the Class D amplifier. Lab.gruppen therefore call it Class TD. It attains the same high efficiency as Class D, but avoids its 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. Besides the traditionally superb Lab.gruppen sonic performance, fP 6400 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 regulated 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 (90 V) instead of 230 V (115 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 DIP 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 nonmusical 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.
Features
- 2 Channels
- Compact design, 2U high
- Low weight, 10 kg (22 lbs)
- MLS Switch: Lab.gruppen's unique power matching for different loads
New Features
- 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
- Bridged mono outputs in one Speakon connector
- Extruded front panel for increased stability
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Used LAB.Gruppen
LAB.Gruppen is a Swedish sound equipment company, based in Kungsbacka, Sweden, dedicated to building mainly public address power amplifiers. It is owned by Music Group which also holds Midas, Behringer, Turbosound, TC Electronics and others. As of 2007 the company had 130 employees.
Kenneth Andersson and Dan Bävholm founded Lab.gruppen in 1979. They first met as schoolboys when they shared an interest in electronics.Andersson and Bävholm's first project was a hand-made mixing console. It was used as part of the Front of House equipment for a concert by Eartha Kitt. They created other mixers and a series of guitar heads and combos. Their intermittent manufacture of mixers and guitar amplifiers continued through the formal establishment of Lab.gruppen in 1979.
The company was located inside a local hi-fi store, where the duo serviced consumer equipment for additional income. It was here that the company's first professional audio power amplifier was created.
Between the LAB 4000 and FP Series 6400, Lab.gruppen engineers continued to advance and refine their products. The LAB Series was overhauled and augmented and subsequently became the FP range. FP designs were upgraded to meet the stringent new EMC standards in Europe, and adoption of UL safety standards allowed them to be sold in the United States. Standardization of internal components between models increased manufacturing efficiency to keep pricing competitive in all new markets.
In the late 1990s, the founders brought in new ownership and a managing director. In July 2000, Lab.gruppen was acquired by the TGI Group of the United Kingdom, and a few months later Tomas Lilja was chosen as managing director.
In early 2002, the TGI Group was acquired by TC Group of Denmark, the current corporate owner. In 2004, the company moved to its new location at Faktorvägen. Both Andersson and Bävholm remained with the company following the acquisitions.
In 1998, Lab.gruppen engineers undertook the long-term development of a new amplifier platform. The complete range would have four bridgeable amplifier channels and an integrated monitoring and control network. The basic technology of both the power supply and output stages was taken from the proven FP range, but with significant upgrades to reduce the number of components required.
Designated the C Series and targeted at the installation market, the first amplifiers of this design were shipped in the summer of 2005. This was followed up by the release of FP+ in 2006 and PLM Series in 2007.
The PLM Series was the first Lake processor with integrated amplification and it as it was embraced by the market Lab.gruppen acquired the exclusive rights to the Lake brand and the Lake processing for professional applications in touring and fixed installations late 2008.
The E Series was the first amplifier range with more than 200 W per channel that got the Energy Star approval when it was launched in 2011. More amplifiers with Energy Star were added with the LUCIA models in 2013.
In 2014, Lab.gruppen launched D Series for installations with audio over the network and PLM+, a successor to PLM Series.
In 2015, Lab.gruppen and the other brands of TC Group were acquired by Music Group.
In 2016, Lab.gruppen expanded the E and LUCIA product lines so that there are now 15 models with Energy Star.
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Efficiency Rating: Level of sound output measured at a prescribed distance with a standard input power. Efficiency rating standard is 1 watt (2.83V at 8 ohms) at 1 meter over a specified frequency range and is measured in decibels.
Equalization: Loosely, any type of relative frequency adjustment. Specifically, the process of changing the frequency balance of an electrical signal to alter the acoustical output.
Equalizer: A component designed to alter the frequency balance of an audio signal. Equalizers may be graphic, parametric, or a combination of both.
Fade: A gradual increase in audio, i.e. a fade-up, or a gradual decrease in audio, i.e. a fade-down.
Feedback: The transmission of current or voltage from the output of a device back to the input, where it interacts with the input signal to modify operation of the device. Feedback is positive when it’s in phase with the input and negative when it's out of phase.
FM: Frequency Modulated.
Frequency: The number of cycles (vibrations) per second. In audio, audible frequencies commonly range from 20 to 20,000 cycles per second (Hz). In video, frequency is used to define the image resolution. Low-frequency video images depict large objects or images. Higher frequencies depict smaller objects (finer details.
Frequency Response: A measure of what frequencies can be reproduced and how accurately they are reproduced. A measurement of 20 to 20,000 Hz, 3dB means those frequencies between 20 and 20,000 Hz can be reproduced no more than 3 dB above or below a reference frequency level.
Full-Range: A speaker designed to reproduce the full range (20 Hz to 20 kHz) of audio frequencies.
Gain: Increase in level or amplitude.
Gooseneck: This refers to a microphone with a flexible neck that is most frequently attached to a podium or lectern. It is designed to allow the speaker to raise or lower the microphone to a suitable height.
Graphic Equalizer: A type of equalizer with sliding controls that creates a pattern representing a graph of the frequency-response changes. Raising sliders boosts the affected frequencies lowering sliders cuts (attenuates) the affected frequencies.
HDCP: High-Bandwidth Digital Content Protection. Created by Intel, HDCP is used with HDTV signals over DVI and HDMI connections and on D-Theater D-VHS recordings to prevent unauthorized duplication of copyright material.
HDR: Hard-Drive Recorder. Device that uses a computer hard drive to store compressed digital audio and video signals.
High Pass: A filter that passes high frequencies, and attenuates low frequencies. Same as low cut.
Hz: Hertz or cycles per second. Something that repeats a cycle once each second moves at a rate of 1 Hz.
Incue/Inq/In-Point: These words all refer to the initial few seconds of audio signifying the beginning of the production.
Integrated Amplifier: A combination preamp and amplifier.
Impedance: A measure of the impediment to the flow of alternating current, measured in ohms at a given frequency. Larger numbers mean higher resistance to current flow.
KHz: Kilohertz or one thousand Hz.
Lavaliere: A small microphone that attaches to clothing, allowing the speaker to have a hands-free presentation.
Line Array: A group of speakers that have been arrayed or ” built up” in the vertical or horizontal plane, which allow for a highly consistent sound field. A Line Array is perfect for medium to large audiences.
Line-Level (Low-Level): A level of electrical signals too low to make the average speaker move sufficiently. Amplifiers receive line-level signals and amplify them to speaker level.
lockout: The final words of a segment used to signify the production’s conclusion.
Low Pass: A filter that lets low frequencies go through but doesn’t let high frequencies go through. Same as high cut.
MHz: Megahertz, or 1 million Hz.
Midbass: The middle of the bass part of the frequency range, from approximately 50 to 100 Hz (upper bass would be from 100 to 200 Hz). Also used as a term for loudspeaker drivers designed to reproduce both bass and midrange frequencies.
Midrange: The middle of the audio frequency range. Also used as a term for loudspeaker drivers designed to reproduce this range.
Mixer: This is the unit in which audio signals are directed from. A mixer provides for both mic and line input combinations while allowing you to control one or more outputs.
MLP: Meridian Lossless Packing. Encoding format that is able to completely reconstruct the original signal at the receiving end. No information is lost or discarded, regardless of how trivial it might be. Used to encode six channels of high-resolution audio on DVD-A.
Mono: Monophonic sound. One channel.
MP3: MPEG-1 Audio Layer-3. Compression scheme used to transfer audio files via the Internet and store in portable players and digital audio servers.
Natural Sound (NATS): The nonverbal audio that occurs in a non-studio setting. NATS can be used to help characterize the setting.
Noise: An unwanted portion of a signal such as hiss, hum, whine, static, or buzzing.
Nonlinear Editing: Digital audio systems that allow for clips to be extracted without affecting the master recording.
Professional used lighting equipment.| Professional second hand lighting equipment.| Professional pre owned lighting equipment.
Professional used audio equipment.| Professional second hand audio equipment.| Professional pre owned audio equipment.
Second hand audio gear. | Second hand lighting.
Pro audio equipment, second hand amplifiers, DJ, second hand sound systems, second hand Microphones, second hand Media Players.
Outdoor & Indoor LED screens for sale, LED mobile truck.
Light trussing, Gebrauchte Veranstaltungstechnik, used stage equipment Stage & Theatre lighting products.
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