Reviews Microphone Impedance Matching Circuits

Russound SS6.2 6 pairs Speaker Selector Switcher New SS-6.2

Offering high-quality audio performance, it also provides overload protection and long-term reliability.
The ss-6.2 allows you to switch up to six speaker pairs connected to a stereo amplifier.
The ss-6.2 offers two operating configurations: impedance matching and bypass..
Bypass mode is used for direct speaker switching with remote impedance-matching volume controls.
Designed for use with 8-ohm loudspeakers, the ss-6.2 also provides safe connection to Bridged amplifiers and even works in applications where there is....

Moving Coil Dynamic Uni-Directional Element - Microphone Sensitivity: -54db (+/-)3db(0dB=1V/Pa @ 1KHz).
Durable Zinc Alloy Metal Construction - On/Off Broadcasting Switch.
Steel Mesh Ball Shaped Grill - 16.4 Foot x 6.5mm Microphone cable with 600 Ohms Outputs.
Frequency Response: 50Hz~15KHz - Microphone Dimensions : 7.7'' x 0.8'' x 1.0''.

Buzzer Sounder Electric-Composition -- Mainly made up by multivibrator, piezoelectric buzzer chip, impedance matching unit, resonator and shell..
Buzzer Alarm Buzzer-Multivibrator -- Multivibrator vibrates and outputs audio signal..
Alert Buzzer Sound-Impedance Matcher -- Impedance matcher drives piezoelectric buzzer sound..
Buzzer 12 volt-Sound Continuously -- Connected to rated power and the buzzer will sound continuously..
buzzer Active Piezo-Easy to Control -- Can be controlled conveniently..

Designed to transform voltage or change the impedance of a load..
The primary and secondary windings are closely coupled..
Sufficient passband, the original winding inductance is large, the leakage inductance is small, the influence of hysteresis loss can be reduced..
Stable performance, high reliability, convenient to use..
Used as components for circuits such as voltage amplification and power output in radio communication, broadcast television, and automatic control..

Package Includes: (2)RockvilIe RSG15 15 3-Way 1500 Watt 8-Ohm Passive DJ/Pro Audio PA Speaker. (2)RockvilIe RCTR103R 3' 1/4'' TRS to 1/4'' TRS Balanced Cable, Red, 100% Copper. (2)RockvilIe RCXFM20E-B 20 Foot Nickel Plated Female to Male XLR Microphone Cable. (4)RockvilIe RMC-XLR High-End Metal DJ Handheld Wired Microphone Mic w (2) Cables. (1)RockvilIe RPM1470 14 Channel 6000w Powered Mixer w/USB, Effects/14 XDR2 Mic Pres. (4)RockvilIe RVMIC1 Microphone Stand Dual Boom & Tripod Base.
(1)Pair of RockvilIe Tripod Speaker/Lighting Stands+(2) 30 Foot 1/4"-SpeakOn Cables. Features: RockvilIe RSG-15 Carpeted Passive Loudspeaker. Single 15 Pro Audio Woofer. (4) Piezo 3" Bullet Tweeters. (1) High Efficiency Piezo Compression Horn. RMS Power: 750 Watts. Program Power: 1000 Watts. Peak Power: 1500 Watts. 2.5 High Temperature Aluminum Voice Coil. 8-Ohm Impedance. Sensitivity: 102dB @ 1w/1m. Frequency Response: 40Hz - 22 kHz. SpeakON Input connection.
In/Out connections (Parallel). Dimensions: (20.5+13.2)x13.8x29.5in. Weight: 39.24Lbs. Pole Mountable. Rubber Isolating Feet. Construction: Top quality MDF - Stapled, Bonded & Braced. Fea....

Package Includes: (1) Presonus Bluetube DP V2 2 Channel Tube Mic Pre-Amp. (1) RockvilIe RCM03 Pro Studio Recording Condenser Microphone Mic+Metal Shock Mount. (1)RockvilIe PRO-M50 Studio Headphones w/ Detachable Coil Cable, Case+Extra Ear Pad. Features of Bluetube V2: Dual path, with both 12AX7 vacuum tube and solid-state gain stages. Combo mic/instrument inputs with Class A XMAX mic preamplifiers. Tube Drive tube-saturation control. Illuminated analog VU input-level meter.
Compact 1/2U rack-mount chassis. Dual path, with both 12AX7 vacuum tube and solid-state gain stages. Combo mic/instrument inputs with Class A XMAX mic preamplifiers. XLR and line outputs. Tube Drive tube-saturation control. 48V phantom power. 80 Hz high-pass filter. -20 dB pad. Polarity-reverse switch. Illuminated analog VU input-level meter. Compact 1/2U rack-mount chassis. Bluetube V2 Manual English (PDF). RCM03 Condenser Microphone (made of aluminum!).
100% Copper 10 foot 3.5mm jack to XLR cable to connect mic to your computer or other device we need to update on ebay amazon, website, etc. 100% Copper 10 foot XLR to XLR cable to connect to any mixer with phantom power. Metal shock mount. Metal Anti-wind foam cap. Owners Manual. Warranty card. Features: RockvilIe RCM03 Pro Studio ....

Package Includes: (1) Beyerdynamic DT 1770 Pro 250 Ohm Studio Recording Headphones w/Tesla Driver. (1) SAMSON G-Track Pro Studio USB Condenser Microphone Mic+Built in Audio Interface. Beyerdynamic DT 1770 Pro 250 Ohm Studio Recording Headphones w/Tesla Driver. Closed premium studio headphone. Rugged headband made of spring steel. Single-sided, detachable cable. Soft, replaceable ear and headband pads. Gold-plated mini stereo jack plug (3.5 mm) & 1/4" adapter (6.35 mm).
Circumaural headphone for high-end studio use. 250 Ohms, 45 mm dynamic Tesla neodymium driver. Rugged headband made of spring steel. Single-sided, detachable cable with mini-XLR. Made in Germany. Specifications: Transducer type: Dynamic. Operating principle: Closed. Nominal Impedance Headphones: 250 Ohms. Headphone Frequency Response: 5 - 40,000 Hz. Sound Coupling To The Ear: Circumaural (Around The Ear). Ean: 4010118710711. Cable & Plug: 3-Pin Xlr Plug & 6.35 Mm (1/4") Stereo Jack Plug.
Nominal SPL: 102 dB SPL (1 mW / 500 Hz). Max. SPL: 125 dB SPL (200 mW / 500 Hz). T.H.D: < 0.05% (1 mW / 500 Hz). Nominal power handling capacity: 200 mW. Sound coupling to the ear: Circumaural. Ambient noise attenuation: Velours: approx. 18 dBA. Nominal headband pressure: approx. 7.2 N. Weight (without c....

1, Plug is 3.5mm, collar diameter is 11cm ..
2, monaural high impedance shielded cable, good pickup sound effect!.
3. The position can be adjusted by freely bending the microphone arm..
4. Hanging on the neck suitable for people wearing glasses, suitable for busy hands. Don't worry about the microphone dropping..
5. Widely used for teaching speaker, educational presentation, wireless microphone presentation, conference presentation, banking, counter transceiver..