Professional Audio Products Data Sheet
FLEX
MODULAR SIGNAL PROCESSING
Flex Series Modular Signal Processors
General Description
Ranes Flex Series of modular signal processors represents a milestone in system flexibility, quality and costeffectiveness. Unlike previous modular approaches, the Flex
Series requires no expensive mainframe in order to operate.
Each module is self-contained and interfaces directly with
other professional audio gear via 3-pin, screw terminals, ¼"
and DIN connectors. A multi-pin bus system on Flex mixer
modules reduces interconnect wiring to a single short DIN
cable (supplied), yet provides the kind of multiple program
capability found on large, expensive mixing consoles.
Each Flex module conforms to the industry standard HR
(Half Rack) mechanical specifications, allowing vertical or
horizontal, recessed or flush mounting into standard EIA
equipment racks. Vertical mounting is achieved via a low-cost
metal frame which holds 10 modules and occupies 6 rack
spaces (10.5"). All active modules are powered externally by
either the small RS 1, UL listed, CSA certified, IEC compatible power supply shipped with each unit, or by the verticalmount FRS 8 Flex unit, or by the horizontal RAP 10 power
supply. This low voltage external power supply systemalso
being standardized by the pro audio industrysignificantly
improves signal quality, minimizes system grounding
problems, and qualifies all Flex modules for Class 2 operation
per the National Electrical Code. This means Flex systems
carry automatic agency acceptance (UL, CSA, ETL, etc.)
without the expensive approval process, allowing the timely
development of top quality equipment at more competitive
prices.
system can be custom tailored to its exact requirements,
without the wasted costs of buying more than you need. And
designed-in expandability means you can start with minimum
outlay and increase system capability as the need and budget
allow. This is particularly true when assembling a mixing
system with Flex. Any size 4-bus mixer can be assembled
with just the right number and type of inputs and equalization.
Even a small start-up system offers features such as two
separate source-selectable auxiliary buses, insert loops,
phantom power and much more. Superlative quality, performance and flexibility distinguish the Flex Series.
Flexibility is the key concept for the Flex Series. Each
Features
SELF-CONTAINED MODULES
MAINFRAME NOT REQUIRED
REMOTE UL/CSA/TUV AC POWER
HIGHEST QUALITY PERFORMANCE
BALANCED INPUTS AND OUTPUTS
EXTREMELY LOW NOISE AND DISTORTION
FLEX
MODULAR SIGNAL PROCESSING
Professional Audio Products Data Sheet
Features and Specifications
Parameter Specification Limit Units Condition s/Comments
Input Impedance
..........Line 20k 1% Ohms Each Leg to Ground
..........Mic 1k 1% Ohms Differential
Max Input Level
.........Line +20 1 dBu
.........Mic +0 1 dBu
Input Design Active Balanced/Unbalanced True Instrumentation Amplifier
Input Connectors 3-pin, ¼" TRS, Screw Terminal Check Individual Data sheets
RFI Input Filters Yes
Max Output Level +20 1 dBu 2k Ohms or greater
+18 1 dBu 600 Ohms or greater
Output Impedance 100 1% Ohms Each Leg to Ground
Output Design Active Balanced/Unbalanced Cross-Coupled or Differential
Line Drivers
Output Connectors 3-pin, ¼" TRS, Screw Terminal Check Individual Data Sheets
Frequency Response 20-20 kHz .25 dB
THD + Noise .03 .01 % +4 dBu, 20-20 kHz
IM Distortion (SMPTE) .03 .01 % +4 dBu
Signal-to-Noise Ratio 106/90 (re +20 dBu / +4 dBu) 1 dB Unity Gain, 20 kHz BW
Overload LED Threshold +16 1 dBu All critical nodes monitored
Power Supply Input 18 VAC w/center tap 10% Vrms
Power Supply Connector 6-pin mod plug
Remote Power Supply Model RS 1 Included See RS 1 Data Sheet
Safety Agency
..........Classification Class 2 Equipment National Electrical Safety Code
..........Design Safety Extra-Low Voltage VDE SELV
..........U.L. Listing U.L. 813 Exempt Class 2
..........C.S.A. Certification C22.2 No. 1 Exempt Class 2
..........CENELEC IEC 65 Exempt Harmonization Doc. HD 195.S4
Unit
..........Construction All Steel HR Compatible
..........Size (typical) 8.5"H x 1.75"W x 8"D (21.6 cm x 4.4 cm x 20.3 cm )
..........Size FSC 22 (only) 8.5"H x 1.75"W x 9"D (21.6 cm x 4.4 cm x 23 cm)
..........Weight (typical) 4 lb (1.8 kg)
Shipping
..........Size 6" x 12.5" x 12.5" (15.2 cm x 31.8 cm x 31.8 cm)
..........Weight (typical) 6 lb (w/power supply) (2.7 kg)
..........Weight FBB 44 5 lb (2.3 kg)
..........Weight FAC 28 7 lb (w/power supply) (3.2 kg)
..........Weight FLM 82 7 lb (w/power supply) (3.2 kg)
..........Weight FSC 22 7 lb (w/power supply) (3.2 kg)
..........Weight FHA 19 1 lb (.5 kg)
..........Weight FHL 2 1 lb (.5 kg)
..........Weight FHT 2 7 lb (3.2 kg)
..........Weight FSB 1 1 lb (.5 kg)
..........Weight FSC 10 4 lb (1.8 kg)
..........Weight FVR 10 6 lb (2.7 kg)
Note: 0 dBu=0.775 Vrms
Professional Audio Products Data Sheet
FLEX
MODULAR SIGNAL PROCESSING
Application Information
Flex module design allows both system and stand-alone
applications. All modules are complete and functional without
other Flex units, and may be used alone or in conjunction
with other manufacturers products.
Modules exist with or without bus facilities. Modules
without bus options are designed for insert loops and signal
path series connection. Examples of these are equalizers,
crossovers, and dynamic processors (compressors, limiters,
etc.). Modules with buses fall into the mixer category.
Examples range from single input full-featured mic input
channels, to multi-input stereo line mixers.
Mixer Module Bus and Routing Details
The Flex bus system is comprised of four independent
buses. These are labeled Master A/B and Aux A/B. Tremendous flexibility exists when using the Flex bus system.
Hopefully, the following block diagrams of these Flex mixing
modules will help clarify the different bus options. These are
offered as an aid in designing systems.
Important differences distinguish each type of module.
Beginning at the end, the FMM 42 Mixer Master output
module terminates the bus system and supplies metering. The
bus-through feature allows paralleling of output modules
when required.
To begin or to add to the bus you choose between three
modules: The FMI 14 functions identical to a standard mic
input channel on a large mixing board. Please note the
assignable Aux Send feature.
The FPM 44 Program
Mixer trades off the EQ and
looping features of the FMI
14 for multiple mic or line
level inputs. Four mic/line
inputs exist on the FPM 44
and the Aux Sends are
assignable Pre- or Post-fader.
The FLM 82, bus-wise, is
similar to the FMI 14 or FPM
44, except restricted to line
level inputs, with assignable
Aux sends. Note that the FLM
82 can also terminate the bus
system, if desired, with
provisions for looping the
Aux bus inputs into the
Master outputs.
Please ask for the Flex
Users Guide and the individual module data sheets for
complete details.
Architectural Specifications
The modular signal processing components shall be 8.5
inches by 1.75 inches by either 8.25 inches, or 9.25 inches
deep and shall be housed in an all-steel chassis. Each module
shall have a provision for ground-lift. Each modules power
supply input shall conform to the proposed AES RAP
(Remote AC Power) standard. Each modules physical limits
and mounting criteria shall conform to the industrys HR
standard (HR1-1988, R789) allowing full compatibility with
other such devices.
Each module in the system shall furnish a power-on LED.
Each module in the system shall contribute less than .03%
THD+Noise, and less than .03% Intermodulation Distortion
per the SMPTE measurement standard.
Each module in the system shall have a line level input
impedance of 20k Ohms. Each microphone input shall have
an input impedance of 1k Ohms. Maximum line input levels
shall be +20 dBu. Maximum microphone input levels shall be
0 dBu. Each module shall be provided with an RFI input
filter.
All infrasonic filters in the system shall have a corner
frequency of 15 Hz, rolling off at 18 dB/octave or greater,
with a Butterworth characteristic and shall be able to be
bypassed internally. The connected system frequency response shall not be less than 20 Hz to 20 kHz, ±1 dB.
The unity gain signal-to-noise ratio of all modules shall be
in excess of 90 dB, re +4 dB, 20 to 20 kHz. The signal
threshold of all overload LEDs shall be +16 dBu.
The modular signal processing shall be Rane Corporation
Flex Series.
FLEX
MODULAR SIGNAL PROCESSING
Professional Audio Products Data Sheet
Vertical Mounting Accessories
FVR 10 Vertical Rack
This 12 gauge steel frame mounts up to ten Flex modules
in a 19" rack, occupying 10.5" (6U) of rack space. All
mounting hardware is included. Rack ears are included with
each Flex unit. This is the required rack for mounting the
optional FRS 8 Power Supply.
FSB 1 Security/Blank Panel
For use only with the FVR 10. This not only covers
unused blank spaces, but can serve as an individual security
cover over any recess mounted module.
FSC 10 Security Cover
This completely covers the entire FVR 10 Rack when all
modules are recess mounted.
Horizontal Mounting Accessories
FHT 2 Horizontal Tray
This 12 gauge steel tray is recommended for all mobile
rack installations. Units mount from the top by four screws
apeice, assuring a solid installation. An FHA 19 may fill the
empty side when mounting only one Flex unit.
FHL 2 Horizontal Link Kit
This assembly fastens the two inside panels of two Flex
units together. Side rack ears come with each Flex unit. This
kit is recommended for non-mobile applications, when
mounting Flex units next to other 19" rack units.
FHA 19 Horizontal Adaptor
This allows 19" rack mounting of only one Flex unit. It is
a shallow metal box with an open back, and uses the rack ears
enclosed with each Flex unit.
Other Flex Accessories
Mod Power Cables, 24"
These are spares from the FRS 8 or RAP 10 Power
Supplies. Four to a package.
Mod Power Cables, 6'
These connect to the FRS 8 or RAP 10 Power Supplies
when greater length is required. Four to a package.
Mod Connector Kit
A standard mod plug crimp tool and (25) RJ-12 plugs are
included for custom cable assemblies.
Flex Bus (DIN) Connector Cables
These spares connect the Flex Bus In and Out for mixerbuilders. Six feet long, three to a package.
©Rane Corporation, 10802 47th Avenue W., Mukilteo WA 98275-5098 TEL(206) 355-6000 FAX(206) 347-7757
All features & specifications subject to change without notice. 520-074 AUG95Printed in the U.S.A. on Recycled Paper
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