JBL CSM-28 PRE-AMP 8 ΙΝ & 2 OUT

Backed by the combined technological prowess of multiple HARMAN brands, the JBL Commercial Series Mixers (CSM) deliver unsurpassed quality in commercial sound. Easily configured for a range of applications, such as background music, security, and paging, CSM units are designed for everything from schools and hospitals to restaurants and fitness facilities. They feature RJ45 connectors for use with JBLCSR-V in-wall volume controls, and a universal power supply that accepts AC voltages from 100 to 240 VAC, 50/60 Hz. Plus, theyʼre built using HARMANʼs GreenEdge clean standards to offer numerous energy-efficient benefits, including a lighter weight, space-saving design, and conforming to RoHS standards. 4 or 8 inputs with 1 or 2 channel outputs Fanless, space-saving 1U design Independent base/treble controls Euro-block type mic/line input and output connectors, and unbalanced RCA inputs for consumer connection Sleek industrial look with illuminated rings making them easy to see and use Configurable output routing (2 channel models only) Supports JBL CSR-V wall controller via Ethernet cable Priority muting, VOX ducking, and phantom power for all models

SILVER
 
Bandwidth 5Hz to 90kHz, -3dB Maximum output
voltage 8.5Vrms (47 kOhm load)
Overall gain 40dB-60dB @ 1kHz selectable with
dip- switch.
Input Impedance 29 Ohm - 100 kOhm selectable
with dip-switch.Selectable input Capacitance.
Input Unbalanced 1 pair x channel (RCA)WBT
Output Unbalanced(RCA)WBT - MM,
high output
MC, low output MC.
Handmade Litz cable for this specific application
from White Gold. JFET differential built around Toshiba 2SK170 among the most noiseless transistor of the current production.

• Input impedance : 47kohms
• Input capacitance : 120pF
• Gain : 40dB
• Output voltage(typically) : 500mV @ 1KhZ with 5mV input
• Noise floor : 88dB (A weighted)
• THD :

Thorens MM  002 moving-magnet phono preamplifier.

Specifications:

• Mode: Moving Magnet (MM)
• Gain at 1 kHz: 40 dB
• Cartridge matching (input impedance): 47 kOhms + 220 pF fixed
• Frequency response: 10 Hz - 50 kHz (-3 dB)
• RIAA curve accuracy: ±0.3 dB max.
• THD+N: 86 dB
• Crosstalk: ≧40 dB
• Input sensitivity: 3.14 mVrms for -10 dBV output (316 mVrms)
• Max. output voltage: 498 mVrms at 5 mVrms input (1 kHz)
• Output impedance: 47 Ohms
• Input connections: 1 pair of RCA sockets (left/right)
• Output connections: 1 pair of RCA sockets (left/right)
• Power supply: 24 V DC / 630 mA
• Power consumption: 3.3 W / 15 mA
• Weight: 292 g (not including power supply)
• Dimensions (W x H x D): 100 x 45 x 93 mm

The Fono MC is an exceptionally high quality MC phono stage designed to maximise the potential of any MC cartridge. Although specifically to compliment the latest Rega range of  moving coils you will find full adjustability for loading is available via dip switches conveniently placed on the rear panel with two different gain settings located on the back panel making the Fono MC compatible with most low output MC cartridges.

The Fono MC has been designed to be effective, easy to use, and above all, to reproduce music. The Fono MC uses the Linear Systems low noise LSK389 FET in an all discrete input stage where low noise and linearity are vitally important to get the best from an MC cartridge. Because of the high input impedance of FET, the loading effects of the amplifier circuit are minuscule and do not affect the performance of the cartridge.

A MUSE operational amplifier is used in the RIAA equalization amplifier. Polypropylene capacitors have been used in the signal path and in the RIAA equalization circuits. There is selectable input loading for both resistance and capacitance along with two different gain settings located on the back panel making the Fono MC compatible with most low output MC cartridges.

The aesthetic design of the Fono MC was as important as the quality of its electrical capabilities, so it benefits from the same aluminium case as the Rega TTPSU and Fono MM amplifier, giving it a design which offers a familiar feel and moreover brings it in line with its illustrious bigger brothers. The new Fono MC circuit resulted from the design work carried out on the Aria phono amplifier.

The Fono disk stage is designed to amplify the signal from a moving coil cartridge to a level which can feed into a 200mV line level input on a standard hi-fi amplifier.

Specifications

Output impedance = 200Ω
Recommended minimum output load resistance = 5K
Frequency response (50KΩ output load) = 13Hz (-3dB) to 100KHz (-0.3dB)
RIAA accuracy (50KΩ output load) = Better than +/-0.2dB 100Hz to 100KHz
Power requirements = 24V AC at 150mA maximum. Only to be used with Rega PS1.

Input sensitivity (for 200mV output)
4 off = 133uV
4 on = 67uV

Input loading resistance
1 and 2 off = 400Ω
1 on = 100Ω
2 on = 150Ω
1 and 2 on = 70Ω

Input loading capacitance
3 off = 1000pF
3 on = 4300pF
Gain (at 1KHz)
4 off = 63.5dB
4 on = 69.5dB

Maximum input level (at 1KHz)
4 off = 6.7mV
4 on = 3.4mV

Load settings for adjustable MC stages

Impedance -100ohm
Capacitance - 1000pF
Gain setting - High (\'On\' position for Rega phono stages)

Fono MC dip switches settings (factory set at Rega for Rega MC models).

• Input sensitivity: 5mV for 500mV output
• Input loading: 47k +100pF
• Maximum input level: 70mV @ 1kHz
• Output Impedance: 100 Ohms
• Signal to noise ratio: 78dBA ref 5mV
• Power requirements: 24VAC 85mA
• Input for full scale digital output: 7.5mV
• Dimensions  W 102mm x D 125mm x H 30mm