USED Power Amplifiers (800-)

Amplificatoare diverse second-hand in stare tehnica foarte buna importate din Germania. Pretul exprimat este de pentru fiecare bucata, in limita stocului disponibil. Nu se ofera garantie. Detaliile tehnice ale fiecarui produs pot fi luate din pagina producatorului.

Pentru selectia prezentata oferim cateva specificatii de baza:

CAMCO Tecton 32.4

Gebrauchter, sehr guter technischer und optischer Zustand (Kratzer an Ober- und Unterseite) aus Festinstallation.
2x1600W/ 4Ohm

RAM Audio S 3004 4-Kanal Endstufen

Neu eingetroffen:

04 Stück RAM Audio / S 3004, 4-Kanal Endstufen, 4x 700W/2Ohm

guter Zustand
aus Festinstallation
immer klimatisiert betrieben

Versand möglich

CAMCO D-Power 2

Wir verkaufen wegen Systemumstellung unser Backup aus unserem Lager.

Es handelt sich hier um 1 Stück CAMCO D-Power 2

2 x 1600 Watt an 2 Ohm
2 x 120 Watt an 4 Ohm
2 x 700 Watt an 8 Ohm

Diese Backup ist optisch und technisch wie neu
Die Endstufe wurde regelmäßig gewartet und gereinigt.

L' Acoustics LA15a

4 x 370 W into 8
Ω
4 x 600 W into 4

Master Audio DPU-3K6 2x1800W/4Ohm

2 x 1000W/8Ohm
2 x 1800W/4Ohm

Sehr Gutem Zustand.


Ω
4 x 500 W into 2
Ω
The LA15a is a compact, light weight four-channel power amplifier
(2 rack units, 8.6 kg) providing 600 watts per channel into 4 ohms. Ideal
for amplifying the high frequency section in multi-channel monitor
systems or passive 2-way systems in distributed fixed installations, the
LA15 can also be used to power active 2-and 3-way systems since it
is possible to bridge connect one or two channel pairs and match the
output power delivered into a variety of impedance loads using
Minimum Load Select (MLS) switching.
The switch-mode power supply (SMPS) employed in the LA15a is a
modern solution to the weight and size problem. With SMPS
technology, it is possible to use ferrite transformers instead of the
heavy iron transformers and large electrolytic capacitors that are
typical of conventional power amplifiers. Combined with the heat
dissipation efficiency of the patented IntercoolerÆ system, this results
in a weight reduction of up to 60% when compared with conventional
amplifiers of similar power ratings.
Earlier attempts at using SMPS technology for audio were less than
impressive since the type of supply found in many computers today
was directly adopted. The LA15a is different since a regulated SMPS
has been implemented using push pull conversion without current
limiting on the secondary side of the switching transformer. Instead,
sense windings inject a magnetic pulse from the AC line during a
pulse time segment that is separate from the output charge current
pulse. The net result is a power supply with performance characte-
ristics that are the same as a conventional power supply and capable
of delivering high peak power, tight bass and detailed transient
response.
Using SMPS technology it is also easy to stabilize the DC-rail voltage
allowing the LA15a to deliver full power over a range of up to 20%
supply voltage swings and at any AC mains frequency from DC to
400 Hz. This stabilization is obtained by controlling the magnetic
energy in the ferrite transformer with pulse width processing and
magnetic flux sense windings.
The twenty-four 250 watt bipolar power transistors employed in the
LA15a are cooled by a patented solid copper heatsink, termed the
Intercooler. Transistors are directly mounted onto the Intercooler for
improved heat transfer and the heat sink is mounted horizontally in
front of a pressure chamber that is created by two variable speed
cooling fans. Specially designed thermal feedback circuitry protects
against thermal breakdown and advanced linear active filtering is
employed to reduce carrier noise and distortion in accordance with
the strictest of EMC and RFI standards.
The LA15a is completely short-circuit protected and equipped with
Adaptive Limiting Systemô short circuit protection. ALS permits
very high peak currents while keeping the transistors within their "Safe
Operation Area". This makes it possible to run loudspeakers with
impedance variations that are considerably lower than the rated
nominal impedance of the power amplifier. Five more protection
circuits protect the LA15a and the loudspeakers:
DC Protection
: Two types - fuses on the supply branches of each
channel (IEC 65 requirement) and crowbar type protection that
shorts the output.
Thermal Protection
: Prevents the amplifier from overheating and
causing damage to the output stages. Front panel indicators come on
as a warning before protection occurs.
Clip Limiter
: Prevents severely clipped waveforms from reaching the
loudspeakers while maintaining full peak power.
VHF (Very High Frequency) Protection
: Protects the loudspeaker
against non-musical signals outside the audible frequency range

Spune-ţi opinia

Numele tău:
Opinia ta: Notă: Codul HTML este citit ca şi text!

Nota: Rău           Bun

Introduceţi codul din imagine: