StudioTech 233 manual Specifications, General Audio

please refer to the Additional Connectors section in the Technical Notes area of this user guide.

Specifications

General Audio:

Frequency Response: 20 Hz-20 kHz, ±0.1 dB, mic in/main out

Distortion (THD+N): 0.008%, measured at 1 kHz, mic in/main out

S/N Ratio: 80 dB, referenced to –46 dBu mic in/ –2 dBu main out

Connectors:

Mic In, Line In 1 & 2, Intercom Interface: 3-pin female XLR-type

Main Out, Talkback Out 1 & 2: 3-pin male XLR-type

Headphone Out: ¼-inch 3-conductor phone jack

24 Vdc Power In: 2.1 x 5.5 mm coaxial power jack with locking bushing, compatible with Switchcraft S760K plug

Spare Connector Locations: 3

Allows up to three Neutrik NC*D-L-1 connectors to be installed (*=3F, 3M, 5F, 5M, 6F, 6FS, etc.)

Microphone Input/Preamplifier:

Type: electronically balanced

Input Impedance: 2 k ohms

Gain Range: 20 to 60 dB, adjustable in 10 dB steps

Compatibility: dynamic or phantom-powered mics

Phantom Power: 48 Vdc, nominal, meets IEC 61938

Compressor:

Threshold: 2 dB above nominal level

Attack/Release Time: 2 mSec/100 mSec

Slope: 5:1

Status LED: compressor active

Line Inputs: 2

Type: balanced, transformer-coupled

Impedance: 10 k ohms

Nominal Level: –12 dBV to +6 dBu, adjustable

Intercom Interface:

Type: 2-channel, unbalanced (pin 1 common; pin 2 DC with channel 1 audio; pin 3 channel 2 audio) Compatibility: single- and dual-channel intercom systems such as from RTS™ and Clear-Com®

Impedance: 10 k ohms

Nominal Receive Level: –10 dBu

Nominal Talkback Level: –10 dBu

Sidetone (Null): 0 to –18 dB, adjustable

Main Output:

Type: balanced, transformer-coupled

Nominal Level: –2 dBu

Maximum Level: +20 dBu into 2 k ohms

Impedance: 100 ohms

Line-Level Talkback Outputs: 2

Type: transformer-coupled with series capacitors and isolation resistors

Impedance: 600 ohms

Nominal Level: +4 dBu

Maximum Level: +11 dBu (compressor restricts maximum)

Headphone Output: 1, stereo

Compatibility: intended for connection to mono or stereo headphones or headsets with nominal impedance of 100 ohms or greater

Type: voltage driver

Maximum Output Voltage: 8 Vpp, 150 ohm load

Auxiliary Relay:

Function: software configurable

Contacts: 2, form C (Common, Normally Closed, Normally Open)

Rating: 1 A, 30 W (resistive)

Access: requires user-implemented connector scheme

Tally Output: 3.5 Vdc, 12 mA maximum, nominal

Power Sources:

Intercom Interface: 24-32 Vdc, 125 mA

External: 24 Vdc, 90 mA @ 24 Vdc; acceptable range 20-30 Vdc. Units shipped to North America and Japan include a 120 V input/24 Vdc output power supply. Units shipped to all other locations include a universal input/24 Vdc output power supply.

Dimensions (Overall):

8.1inches wide (20.6 cm)

3.3inches high (8.4 cm)

8.5inches deep (22.4 cm)

Weight: 4.5 pounds (2.1 kg)

Specifications and information contained in this User Guide subject to change without notice.

Issue 1, September 2007	Model 233 User Guide
Page 44	Studio Technologies, Inc.