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GTcore
bobnar


Prispevkov: 6
Pridružen: 08 Apr 2007, 11:27

Odgovor Objavljeno: 29 Jun 2020, 08:35 

Prodam minimalno rabljen, kot nov ojačevalec vrhunskega proizvajalca audio komponent, Lab Gruppen C20:8X, najvišji model serije... dobil sem ga v račun, je pa ravno iz preventivnega servisa, pregledan in menjani 4 slabi elementi-kondenzatorji, na napajalnem delu... Sedaj brezhiben! Nov sicer 3.000€

P.s. Narejen seveda na Švedskem(!) uporabljen v nekadilskem in neprašnem okolju (notranjost kot nova...) ... Izjemno očuvan - druga fotka posneta nekaj dni nazaj. Izjemno nizek THD za tako močan ojačevalec!

Sicer pa nabor funkcij spodaj:

Lab Gruppen's C 20:8X delivers 8 × 250 W (max. continuous output power, all 8 channels driven, VPL set at 100 V and Gain set at 32 dB) at 4 ohms, 8 ohms, 16 ohms or 70 Vrms; 500 W at 100 Vrms is available in bridge mode.

The C 20:8X employs a cost-efficient, proprietary Class D output design. Other features include a universal power supply, selectable 35 Hz high-pass filter, and built-in GPIO control facilities.

Each channel has an individually configurable Voltage Peak Limiter (VPL), which allows the output to be optimized for any loudspeaker load – whether a single large subwoofer or a series of small 70 V loudspeakers (100 V in bridge mode). VPL works in combination with adjustable input gain (adjustable in 2-channel blocks) to achieve maximum headroom regardless of input levels or output impedances. Additionally a 35 Hz high pass filter may be inserted in each 2-channel section.

Every C Series amplifier is ready for the NomadLink® network right out of the box. With NomadLink, key amplifier parameters are displayed via DeviceControl software, and remote control of channel mutes and power on/off is under network control.

GPIO facilities allow access to key amplifier functions such as power on/off and fault reporting.

For more information, please consult the attached sheet (under "Documents")

Lab.Gruppen C20-8X Amplifier Specifications:
Number of channels: 8
Peak total output all channels driven: 2000 W
Peak output voltage per channel: 100 V / 70 Vrms
Max. output current per channel: 8 Arms
Dimensions: 19" W x 13.5" D x 2RU H (483 x 88 x 343mm)
Weight: 18.75 lbs. (8.5 kg)
Finish: Black painted steel chassis with gray painted steel front
Approvals: CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC
Max. Output Power per Channel (all channels driven):
16 Ohms: 250 W
8 Ohms: 250 W
4 Ohms: 250 W
2 Ohms: 125 W
Hi-Z: 250 W (70 Vrms/100 V peak)
Max. Output Power Bridged per Channel:
16 Ohms: 500 W
8 Ohms: 500 W
4 Ohms: 250 W
2 Ohms: n.r.
Hi-Z: 500 W (140 Vrms/200 V peak)
Performance with Gain: 32 dB and VPL: 100 V
THD 20 Hz - 20 kHz for 1 W:
THD at 1 kHz and 1dB below clipping: < 0.05%
Signal To Noise Ratio: >112 dBA
Channel separation (Crosstalk) at 1 kHz: >70 dB
Frequency response (1 W into 8 ohms) +0/-3 dB: 2.3 Hz - 56 kHz
Input impedance: 20 kOhm
Input Common Mode Rejection, CMR: 50 dB
Output impedance @ 100 Hz: 48 mOhm
Voltage Peak Limiter (VPL), max. peak output:
VPL, selectable per ch.: 100, 63, 45, 32 V
VPL, selectable when bridged: 200, 126, 90, 64 V
Voltage Peak Limiter mode (per ch.): Hard / Soft
Gain and Level:
Amplifier gain selectable (all channels) – rear-panel switches: 29, 32,35, 38 dB
Default gain: 32 dB
Level adjustment (per ch.): Front-panel potentiometer, 21 positiondetented from -inf to 0 dB, hidden behind security panel/dust filtergrille
Connectors and switches:
Input connectors (per ch.) :3-pin Phoenix, electronically balanced
Output connectors (per ch.): Barrier strip 2-pole screw terminals
Output bridge mode: A+B, C+D, E+F, G+H, inputs A, C, E, G are signal source
High pass filter: Fixed at 35 Hz, switchable per channel
NomadLink® network: On board, 2 x RJ45 connectors, IN and OUT
Intelligent fans (on/off): Yes, depending on presence of output signal
Power on/off and Remote enable on/off: Individual switches on front-panel
Cooling: Two fans, front-to-rear airflow, temperature controlled speed
General Purpose Outputs (GPO): Contact Closure types, 2-pole Phoenix
General Purpose Inputs (GPI): Contact Closure types, 2-pole Phoenix
Front-panel indicators:
Common: NomadLink® Network; Power Average Limiter (PAL); Power on
Per channel: Signal present / High-impedance; Voltage Peak Limiter (VPL);Current Peak Limiter (CPL):
Very High Frequency (VHF); High temperature; Fault; Mute
Power:
Operating voltage, 230 V / 115 V nominal: 100-240 V
Minimum power-up voltage, 230 V / 115 V: 80 V
Power Average Limiter (PAL): Yes
Soft start / Inrush current draw: Yes / max. 5 A
Mains connector: IEC Inlet / NEMA 5-15P
Notes:
Note 1: Automatic -6 dB gain compensation when bridging channels. Ch.’s A+B and/or C+D, can be bridged individually.

Note 2: PAL can reduce the maximum output power to keep the power supply operating safely, and/or to prevent excessive current draw tripping the mains breaker.

Note 3: For sine waves, peak voltage output values translate to Vrms with the formula V/1.41 = Vrms. E.g. 100 V peak equals app. 70 Vrms. Hence, outputs can be set for high-impedance loads without requiring a transformer.

Več info na zasebno sporočilo

p.s. menjam tudi za kakšen MC2 - dvokanalni ojačevalec...

Cena: 1100EUR

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