APEX PE 232 MK II 2X30 BAND GRAPHIC EQUALIZER

Recent developments in sound measurement techniques have revealed the limitations
of existing graphic equalisers. The wealth of data that such equipment can provide for
the users requirements - feedback suppression, increased headroom, room equalisation/
compensation can no longer be adequately provided for with a simple graphic equaliser.
The Apex PE MKII is the solution, providing a tool which both enables maximum correction
whilst shaping the response to your specific requirements, combining a full graphic equaliser
with a complementary parametric equaliser/notch filter.

FEATURES:
Electronically balanced input with a balanced floating output stage.
All potential overload points are continuously monitored by an extremely fast "peak-peak"
overload detecter circuit, followed by a "peak-stretching" circuit for clear indication of overload
conditions.Reliablilty is the hallmark of any product, and the mechanical integrity of the components
housing is the vital prerequisite. Sophistical CAD programmes and advanced engineering concepts
have been applied to the chassis design to eliminate the stress and torsional movements which can
damage the electronics.Special attention has been given to the purity of the signal path.The musicality
of previous designs of Apex equalisers has been well appreciated by users, and the PE continues this
tradition, noise and distortion are significantly better than 16-bit digital.Fine-tuning your system is essential.
The "vernier control" provides adjustment refinement on an unprecedented scale.In the event of power failure
to the unit, a failsafe relay links the input to the output ensuring that signal continuity is maintained.

SPECIFICATIONS:
Input
Electronically balanced
Absolute overload point +22dBm
Impedance 10 kOhm (each leg), equal impedance for ?+? and ??? legs
CMRR Better than 65dB (20Hz-20kHz)
connectors XLR-3 type ( pin 1: signal ground, pin 2: hot ?+?, pin 3: cold ?-? )
Output
Electronically balanced and floating, simulating transformer output with app.
10kHom to ground impedance for each leg
Max level +21dBm into 600 Ohms
Impedance 51 Ohms (each leg)
Symmetry balance Better than 65dB (20Hz-20kHz IEC)
connectors XLR-3 type ( pin 1: signal ground, pin 2: hot ?+?, pin 3: cold ?-? )
Performance
Frequency response +0 ?0.5 dB, 40Hz-20kHz (graphic EQ in)
THD < 0.01%, 20Hz-20kHz
Noise < -94 dBm (typ. -98dBm), graphic and parametric equalisers in circuit (0dB settings)
Measurements: , 22Hz-22kHz RMS unweighted
Level Control -? to +6dB
Level control ?0dB? cal. accuracy +- 0.2 dB (overall gain input to output)
Overload indicator
Lights for approximately 200ms if the instantaneous peak voltage at any point in
the equaliser comes within 2dB of clipping
Filters
Graphic equaliser:
30 ISO center frequencies
25Hz to 20kHz 1/3 octave
Center frequency tolerance +-1% (typically better than +-0.5%)
Q tolerance+-1%
Max boost/cut 6 or 12dB +-0.5dB reciprocal
switchable
Parametric filters:
Tuning ranges 18-200Hz, 180Hz-2kHz, 1800Hz-20kHz
Vernier control+- 10% of main frequency control
Range of Q adjustment 0.5 to 8
Range of level adjustment
 -? to +15dB (typ -45 to +15.5dB) non reciprocal. Smaller cut than boost curves
through addition and substraction of parametric bandpass filter output to filter input
Each filter individually switchable
High pass filter:
Frequency range 15-300Hz (-3dB frequencies)
Type
Maximally flat 12dB/oct
Switchable
Power Requirements
Voltage 110/120/220/240V 50/60Hz
Consumption 30VA
Connector IEC type
Size and weight
dimensions 482 x 133 x 255 mm (19 x 5.2 x 10 inch)
weight 7 kg
 

The Rane ME 15S microGraphic Equalizer is a two-channel, 2/3-octave design with 20 mm sliders in a single rack space unit. It features a Range switch for high slider resolution in the ±6 dB mode, equivalent resolution to 45 mm sliders found on the DEQ 60L. The ±12 dB mode provides a wide range of control over system audio.

The active filter sections feature Raneʼs innovative constant-Q (constant bandwidth) design. Constant-Q means the bandwidth of each individual filter is guaranteed to be narrow enough to prevent unwarranted interaction between filters, yet wide enough to produce exactly the type of correction curve demanded by even the most unusual acoustic surroundings. This differs dramatically from conventional designs of the past, encumbered with the unfortunate characteristic of changing bandwidth when changing boost/cut amounts.

Front panel controls and indicators include an overall rotary Level control for each channel as well as Overload indicators. Passive pushbutton Bypass switches feature LED indicators, avoiding ambiguity by being on when the unit is Bypassed. (A passive Bypass switch requires no power to operate. This allows completion of the audio path should power fail in the ME 15S.)

Inputs and Outputs are electronically balanced designs, capable of unbalanced operation when required. They accept and drive all possible signal levels into normal load impedances. Balanced applications choose between the XLR or 1/4" Tip-Ring-Sleeve connectors. Unbalanced sources also may tie to the ME 15S through mono 1/4" connectors (no ring connection).

• Constant-Q Bandwidth Design
• Overall Level Controls and Passive Bypass Switches
• 20 mm Filter Slide Controls with ±6 dB or ±12 dB Slider Range
• Infrasonic, Ultrasonic, & RFI Filters
• Balanced XLR and 1/4" TRS Inputs and Outputs
• Universal internal switching power supply (100-240 VAC)

• Professional 31-band stereo graphic equalizer for live and studio applications
• Revolutionary FBQ Feedback Detection system instantly reveals critical frequencies and can also be used as audio analyzer
• Ultra-low noise 4580 operational amplifiers for highest signal integrity
• Dedicated mono subwoofer output with adjustable crossover frequency
• Additional sweepable high and low-cut filters for each channel remove unwanted frequencies, e.g. floor rumble, hiss etc.
• Highly accurate 12-segment LED input/output metering and input gain controls for easy level setting

• Relay-controlled hard-bypass with an auto-bypass function during power failure (fail-safe relay)
• Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors
• “Planet Earth" switching power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving
• 3-Year Warranty Program*
• Conceived and designed by BEHRINGER Germany

1215 Dual 15-Band Graphic Equalizer

The dbx 12 Series were designed to meet the needs of the most
demanding sound reinforcement environments, while offering the
simplicity of straightforward controls. The 1215 provides standard
features like dual channels, 15 2/3 octave bands, ISO frequency
centers, +/-12 dB input gain range, and switchable 40Hz/18 dB per
octave low-cut filters, but also includes other thoughtful features.
These include 45 mm faders; selectable +/-6dB or +/-15dB boost/cut
range for precise gain adjustments; XLR, barrier strip, and 1/4'' TRS
connectors for installation ease; balanced inputs and outputs for quiet
operation; and chassis/signal ground lift capabilities for quick hum isolation.
The visionary design of the dbx 12 Series makes your job easier.

The dbx 12 Series Equalizers were precision engineered to provide years
of maintenance-free operation in any application. The magnetically isolated
transformer, electronically balanced/unbalanced inputs and servo balanced/
unbalanced outputs, RF-filtered inputs and outputs, and power-off hard-wire
relay bypass with 2 second power up delay were steps our engineers took
to ensure compatibility for all installations. Only the best components were
utilized, yielding a 10Hz to 50kHz frequency response, greater than 90dB SNR
(ref +4dBu), less than 0.005% THD +Noise (1kHz at +4dBu), and interchannel
crosstalk of less than -80dB from 20Hz to 20kHz. All this attention to detail
is contained in a 2U steel/aluminum chassis.

•   Switchable boost/cut ranges of ±6 or ±15 dB
•   Electronically balanced/unbalanced inputs
•   Servo balanced/unbalanced inputs
•   RF filtered inputs and outputs
•  XLR, Barrier Strip, and 1/4" TRS connectors
•  -12dB/+12dB input gain range
•  18dB/octave 40Hz Bessel low-cut filter
•  Chassis/signal ground lift capability
•  Internal power supply transformer
•  Power-off hardwire relay bypass with 2-second power-up delay

Digital stereo active crossover with 4 inputs and 8 outputs, incl. software .

• Flexible routing configurations for all standard mono and stereo output operating modes
• 4 analog inputs and 8 analog outputs (XLR)
• Active frequency filter types (Bessel, Butterworth and Linkwitz-Riley) with slopes up to 24 dB/octave split up the audio signal into different frequency bands
• Incl. software editor (for PC and Mac) for remote control via computer through USB interface: store, transfer, and manage your presets
• Up to 30 user presets storable in the device via software
• 5 menu languages selectable (German, English, French, Spanish, Dutch)
• Alphanumeric LCD screen with 2 lines of 16 characters each
• Input sensitivity digitally adjustable
• Inputs and outputs with 4-digit LED level meter as well as clip and limit LED indicator
• Mute switch with LED indicator per output
• 7-band parametric EQ per output
• Up to 7 ms signal delay adjustable for the outputs
• Output limiter with adjustable limits and automatic attack and release settings as overload protection for your amplifying system
• Switchable phase
• Lock function for prevents undesired changes to settings
• Rack installation, 1 U
• Windows XP, Vista, 7, 10 and Mac OS X 10.5.8 and better
• Digital signal processor
• The device can be connected via USB to the PC in connection with DXO Software The firmware can be updated via the PC connection
• (19") 48.3 cm rack installation 1 U