The Endevco ¼” preamplifier model EM26CB is a generalpurpose preamplifier optimized for use with prepolarized condenser microphones. It is a small, robust unit and uses an Endevco Isotron® power supply, eg. model 4416B. It has a very low inherent noise level, a large dynamic range and a frequency response from below 2 Hz to above 200 kHz. Its small ceramic thick-film substrate has a very high input impedance and is shielded by a guard ring to minimize the influence of stray capacitance and microphonic interference. The model EM26CB is delivered with a built-in TEDS1 chip and can be programmed as a single unit with a microphone fitted. It can be used with all Endevco prepolarized microphones, namely: • ¼” microphones models EM40BE and EM40BD • ½” microphones models EM40AE, EM40AD and EM40AQ, using the included ¼”-to-½” adapter • It has an integrated Microdot output connector. A 10-foot (3 m) Microdot-to-BNC cable is included. The casing is made of stainless steel for maximum strength and durability. 1 Transducer Electronic Data Sheet - as proposed by IEEE-P1451.4 • Isotron® inputs • Prepolarized microphones • ¼” precision microphones • High levels and high frequencies Endevco® model EM26CB ¼” microphone preamplifier Typical features / applications Description cmyk

Endevco® model EM26CB ¼” microphone preamplifier Specifications Frequency response (cable load 4.7 nF): 2 Hz–200 kHz ± 0.2 dB Input impedance: 20 G Ù, 0.4 p F Output impedance (Cs = 20 pF, f = 1000Hz): < 50 Ù Noise (measured with 20 pF ½” dummy mic.): A-weighted: 2.5 ìV rms (typically 2.0 ìV rms) Linear (20 Hz–20 kHz): 6 ìV rms (typically 3.5 ìV rms) Gain: Typically: -0.25 dB Power-supply: 2 mA to 20 mA (typically 4 mA) Maximum signal-output voltage (peak): ± 8.0 V Temperature: Operation: -30°C to +70°C (-22°F to 158°F) Storage: -40°C to +85°C (-40°F to 185°F) Relative humidity: Operation: 0...