Impedance

Audix T-50K Inline Impedance Matching Transformer Product Description Plug mics into your instrument amp or other Hi-Z inputs. The Audix T50k Inline Impedance Matching Transformer adapts low-impedance microphones to high-impedance 1/4" inputs. The durable T50k features a heavy-duty 7mm rubber jacketed cable interface and strain relief. Gold-plated connectors. Created for FireBall and FireBall V microphones for harmonica and beatbox. | Plug mics into your instrument amp or other Hi-Z inputs | The Audix T50k Inline Impedance Matching Transformer adapts low-impedance microphones to high-impedance 1/4" inputs | The durable T50k features a heavy-duty 7mm rubber jacketed cable interface and strain relief | Gold-plated connectors | Created for FireBall and FireBall V microphones for harmonica and beatbox

AMC - WP5 Waterproofness Coaxial 5¿ Low Impedance Ceiling Loudspeaker WP5 - 40W ceiling loudspeakers designed without any metal parts in the loudspeakers chassis in order to guarantee waterproofness and reliability in moisture environments. Plastic speaker membrane, moisture isolated magnet and speaker coil. WP 5 are 5 inch two way loudspeakers for low impedance speaker systems. For applications, where weather proof sound systems are required.

3pcs 16V 2200UF 10x20mm High Frequency Low Impedance Aluminum Electrolytic Capacitor 2200uf 16v Package contains 1 X item of the smallest listed variant.

Buy 60Pcs High Frequency Low Impedance 25V 1000uF 10*13MM Aluminum Electrolytic Cap for R260.09

Buy SM8124A Battery Resistance Voltmeter Internal Impedance Meter LCD Rechargeable for R1,965.71

Buy 200Pcs High Frequency Low Impedance 25V 1000uF 10*13MM Aluminum Electrolytic Ca for R700.83

Buy Handheld Impedance Tester Bridge LCR Digital Resistance Measurement Capacitance for R2,853.52

Buy SM8124A Battery Resistance Voltmeter Internal Impedance Meter LCD Rechargeable for R1,826.23

Buy 20Pcs High Frequency Low Impedance 25V 1000uF 10*13MM Aluminum Electrolytic Capacitor for R175.00

Buy AD8302 Wideband Amplitude Phase Detection Impedance Analysis Module Amplifier F for R183.02

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Buy 3pcs AD8302 Wideband Amplitude Phase Detection Impedance Analysis Module Amplifier Filter Mixer Loss for R480.00

Features: ??Detect the wiring condition of the clear LED socket outlet (polarity detection) ??Loop detection function (the elastic condition of the wiring) ??Leakage switch inspection ??Buzzer alarm setting Specification: Rated AC voltage: AC 230V Shell Material: Plastic Color: Green Loop detection (the elastic condition of the wiring): √ Frequency range: 50-60hz The whole machine power consumption: 3mA Contact voltage limit value: Overvoltage protection: AC/DC 300V The temperature range: 0 ??to 40 ??/span> Humidity: Leakage protection detection: 30mA Protective earthing error detection: √ Response limit: Size: 78x72x41cm Package includes: 1 x Socket Tester 1 x user manual Details pictures:

Impedance: 8 Ohm Power: 150W music Freq. Response: 70 Hz - 5 kHz Sensitivity: 96 dB Application: Mid / Bass Weight: 2 kg

Impedance: 8 Ohm Power: 200W music Freq. Response: 60 Hz - 5 kHz Sensitivity: 96 dB Application: Mid / Bass Weight: 3 kg

Impedance: 8 Ohm Power: 250W music Freq. Response: 50 Hz - 4,5 kHz Sensitivity: 96 dB Application: Mid / Bass Weight: 4 kg

Impedance: 8 ohm Power: 300Wrms Freq.Response: Hz Sensitivity (1W/1m): 96dB Application: Bass Hole cutout: 355mm Basket material: steel Weight: 5,75kg

Impedance: 8 ohm Power: 200Wrms Freq.Response: Hz Sensitivity (1W/1m): 96dB Application: Bass Hole cutout: 276mm Basket material: steel Weight: 4,75kg

Impedance: 8 ohm Power: 600Wrms Freq.Response: Hz Sensitivity (1W/1m): 98dB Application: (Sub)Bass Hole cutout: 426mm Basket material: aluminium Weight: 19kg

Impedance: 8 ohm Power: 300Wrms Freq.Response: 43-3000Hz Sensitivity (1W/1m): 96dB Application: Bass Hole cutout: 355mm Basket material: steel Weight: 5,75kg

Impedance: 8 Ohms Power capacity: 2000 W Peak 1000 W Program 500 W Continuous Sensitivity: 100.3 dB / 1 W 1 m Usable freq. range: 40 Hz ~ 2 kHz Cone: Kevlar impregnated cellulose Voice coil diameter: 4.0' / 100 mm Voice coil material: Aluminum ribbon wire Polyimide-impregnated fiberglass former Nomex stiffener Solderless diffusion welded OFHC copper leads Net weight lb. / kg: 17 lbs. / 7.7 kg Znom (ohms) 8 Revc (ohms) 5.32 Sd (Square Meters) 0.084 BL (T/M) 16.04 Fo (Hz) 51.2 Vas (liters) 182.4 Cms (uM/N) 182.0 Mms (gm) 52.90 Qms 10.60 Qes 0.352 Qts 0.341 Le (mH) 0.34 SPL (1W 1m) 100.3 No (%) 6.70% Vd (cu. in. / ml) 19.5 / 319 Pmax (Watts pgm.) 1000 Disp (cu. in. / ml) 197/ 3229 Xmax (mm) 1.9 15' Weight Unpacked: 16.98 lb(7.7 kg) Weight Packed: 18.08 lb(8.2 kg) Width Packed: 17.52'(44.5008 cm) Height Packed: 18.307'(46.49978 cm) Depth Packed: 7.087'(18.00098 cm)

• IMPEDANCE: 8 OHM. • SENSITIVITY: 99 DB. • FEQUENCY: 35HZ-200HZ. • POWER(RMS): 500 WATTS.

A High-quality, Affordable Mic Preamp with Signature Focusrite Sound! The Focusrite ISA828 microphone preamp puts eight of Focusrite's original ISA preamps into a compact 2U space, giving you amazing sound quality in a unit that's convenient for both your studio and your wallet. The ISA828 gives you a variable impedance circuit with several settings, and also includes eight line/four instrument inputs with high and low impedance options. Using 25-pin D-type connectors, this preamp is easy to interface with Pro Tools HD rigs, as well as many other recording systems and mixing consoles. Get the best for less! Plug into an ISA828. Focusrite ISA 828 Microphone Preamp at a Glance: A remarkable, affordable preamp Line inputs, easy DAW integration Variable impedance A remarkable, affordable preamp The ISA828 features eight original ISA transformer-based pre amps in a single robust 2U chassis, and offers the Focusrite signature sound at the lowest cost per channel to date. The eight ISA series transformer-based microphone preamps feature exactly the same vintage microphone preamplifier design as the original ISA110 module from Focusrite's critically acclaimed Forte console (including the original Lundahl L transformer). Line inputs, easy DAW integration The pre-amps are complemented by eight line inputs, four instrument inputs. Thanks to its convenient 25 pin D-Type connectors, the ISA828 also integrates quickly and seamlessly with ProTools HD, as well as other popular hard disk recorders and mixing desks. Variable impedance The microphone input stage includes a variable impedance circuit, allowing the user to switch between four carefully selected input impedance settings. The original ISA110 setting is supplemented by three further impedance settings to perfectly match/creatively mismatch the pre amp with any microphone collection. The four front panel instrument inputs also feature high and low impedance options to provide a comprehensive and accessible DI solution. Insert switches are also featured on every channel, should the need arise to place extra processing between the pre amp and converter. Vintage design highpass filters are also provided on every channel. Focusrite ISA828 Microphone Preamp Features: Eight original Focusrite ISA transformer-based pre amps in a single 2U space Works seamlessly with ProTools, as well as other hard disc recorders and mixing consoles Switchable input impedance (four settings per channel) provides a range of response flavors. Eight line inputs with four front panel instrument inputs featuring high impedance options Switchable Insert points on every channel Vintage design highpass filters on every channel eliminate unwanted low frequencies without effecting the rest of the audio signal Six LED Input meters on all eight channels provide clear input metering independent of the DAW Sturdy 2U chassis

QED SS50 5-Way Transmatch Speaker Switch Safely connects up to 5 pairs of speakers to the same amplifier using high quality impedance matching transformers to ensure that the amplifier load impedance remains above the minimum value WHAT ARE THE DIFFERENCES BETWEEN THE SPEAKER SWITCHES IN TERMS OF IMPEDANCE? All the speaker switches are configured so that if you use 8 speakers the minimum impedance seen by the amplifier will be 4 WHAT ARE THE BENEFITS OF SERIES VS PARALLEL ? The switches which have more than two sets of speakers use a combination of series and parallel switching to achieve the minimum impedance of 4 no matter what combination of speakers are switched on. For the two way switches there is a choice between exclusively series or parallel versions. If you have 8 speakers (and a 4 min amp) you should always use the parallel switch. If you have 4 speakers and a 4 min amp you should always use the series switch. ALL QED SWITCHES LOAD ON 4 USING 8 SPEAKERS. WHAT HAPPENS IF MY SPEAKERS ARE 6 ? 1. Check your amp if it can cope with a 3 load or less (and some can) then you are alright. The rule is you must always use speakers with double the impedance of the amp minimum. 2. If you only have two pairs of speakers then use the two way SERIES switch. HOW DO THE SWITCHES DEAL WITH POWER, E.G. IF I HAVE AN AMPLIFIER WITH MORE THAN 150 WATTS? These accessories use mains switches which are rated at 6A which means the max power they can handle is 288W given an 8 load IF MY AMP IS RATED 6-16 SHOULD I REALLY BE RUNNING A 4 LOAD? NO, NEVER you should use 12 minimum speakers. You can get 16 speakers though but it may just be easier to change the amp. CAN I USE THEM IN REVERSE E.G. AS AN AMPLIFIER SWITCHER (WE KNOW THE ANSWER IS NO, BUT WHY?) NO because the speaker switches are designed to have two sets or more of speakers attached to one amp, if used in reverse there is always the possibility of connecting two amps at once to one pair of speakers resulting in damage to one or both amps. WHAT IS THE TECHNICAL DEFINITION OF 'TRANSMATCH'? For the 5 way speaker switch we dont use parallel or series switching but use transformer coupling instead. Again you have to use 8 speakers minimum if your amp is a 4 minimum amp. The impedance is then matched by the transformer (hence the name) so that a net 1.6 load (all 5 sets of 8 speakers switched on)is converted back to a 4 load. One pair of speakers (A) is not connected to the transformer but is directly connected to the amp, these will be the main speakers. The four B pairs are connected via the transformer.

At the heart of the MAG C EVO III combo lies a feature-packed bass preamp with rotary bass, middle and treble controls, along with supplementary rotary controls providing 15dB of cut and boost at 220Hz and 1.6kHz. Additionally, front panel push switches for Bright and Deep settings provide instant access to attacking and warm, rounded sounds respectively and, on the subject of low-end response, the trademark Ashdown sub-harmonic generator is ready and able to deliver truck loads of earth moving tone if called upon. With the MAGs now achieving EVO III status, the amplifier also includes a built-in compressor with precision sonic control. Along with the all new tube emulated drive control for that extra bit of grind with your tone. Fueled by a potent 300W power section, MAG C EVO III combo features inputs for active and passive instruments, along with an effects send and return, a tuner/line output and a balanced DI output for direct connection to a mixing console. Power Output (RMS) 307W Power Requirement V Speaker Configuration 1 x 15" BlueLine speaker Frequency Response -3dB at 17Hz and 30KHz Speaker Outputs 2 x Jack Outputs High Instrument Input Impedance 3.9MOhms / Input range 150mV - 20V p-p Low Instrument Input Impedance 10KOhms / Input range 300mV - 40V p-p Line Input Impedance 22k Ohms / Input level 0dBu nominal DI Output 600 Ohms balanced / Level -20dBu nominal Tuner Output Impedance 22k Ohms, level 0dBu nominal Impedance 8 ohm Output Impedance Minimum 4 ohm Signal to noise Better than 80dB (EQ flat) EQ Bass +/-15dB @ 100Hz Lo Mid +/-15dB @ 220Hz Middle +/-15dB @ 660Hz Hi Mid +/-15dB @ 1.6kHz Treble +/-15dB @ 7kHz shelving Deep +8dB @ 50Hz Bright +10dB @ 10kHz

This active DI box converts the high impedance signal from an instrument (guitar, bass, keyboard etc.) to a balanced low impedance one for direct connection to a mixing console. Also features attenuation and ground lift switches. Unbalanced high impedance input via 6.3mm jack with parallel output for monitoring XLRM balanced output for connection to stage box or mixer Switchable attenuation (0dB, -20dB, -40dB) and ground-lift function Powered by +48V phantom power, 9V battery or external PSU (not supplied) Passive DI box for converting high impedance instrument outputs to low impedance line signals for feeding directly into a mixing console. High impedance input via 6.3mm jack with link output for monitoring XLRM connector is a Lo-Z balanced output for connection to a stage box or mixer

Digi 003 in perfect condition. Only used in Recording Studio. Professional device as used in most professional South African recording studios. Works with any DAW software. Mic Inputs Connector: Four balanced XLR jacks Mic Phantom Power: 48V Equivalent Input Noise: -129 dBu Frequency Response: +/- 0.1 dB, 20 Hz - 20 kHz Dynamic Range: 105 dB / 107 dB A-weighted THD + N: dB) Mic EIN: -129 dBu Input Sensitivity: +2.2 dBu Input Impedance: 2K Ohm Line Inputs Connector: Four balanced 1/4 in. jacks Frequency Response: +/- 0.1 dB, 20 Hz - 20 kHz Dynamic Range: 111 dB / 113 dB A-weighted THD + N: dB) Input Sensitivity: + dBu Input Impedance: 22K Ohm DI Inputs Connector: Four unbalanced 1/4 in. jacks Frequency Response: +/- 0.1 dB, 20 Hz - 20 kHz Dynamic Range: 104 dB / 106 dB A-weighted THD + N: dB) - Balanced input Input Sensitivity: + dBu Input Impedance: >300K Ohm Aux Inputs Connector: Two balanced 1/4 in. jacks Frequency Response: +/- 0.1 dB, 20 Hz - 20 kHz Dynamic Range: 111 dB / 113 dB A-weighted THD + N: dB) Input Sensitivity: + dBu Input Impedance: 10K Ohm Line Outputs (1-8) Connector: Eight impedance balanced 1/4 in. jacks Frequency Response: +/- 0.5 dB, 20 Hz - 20 kHz Dynamic Range: 110 dB / 113 dB A-weighted THD + N: dB) Output Sensitivity: +18 dBu Monitor Outputs (Main & Alt) Connector: Two impedance balanced 1/4 in. jacks Frequency Response: +/- 0.5 dB, 20 Hz - 20 kHz Dynamic Range: 110 dB / 112 dB A-weighted THD + N: dB) Output Sensitivity: +18 dBu Headphone Outputs Connector: Two unbalanced 1/4 in. jacks Frequency Response: +/- 0.5 dB, 20 Hz - 20 kHz THD + N: dB) Dynamic Range: 110 dB / 112 dB A-weighted Output Sensitivity: +23 dBu Digital Specifications Supported Sample Rates: kHz Maximum Word Length: 24-bit S/PDIF: 2-channel optical or RCA jack pair Digital Optical: TOSLINK (ADAT, max 48 kHz sample rate) Word Clock: Two BNC jacks Host Connection: Two IEEE-a (FireWire) ports (6-pin-to-6-pin FireWire cable included) MIDI: 5-pin MIDI DIN connectors - one input, two outputs Size / Weight / Power Height: 2U rack (3.5 in. / 8.89 cm) Width: 19 in. / cm Depth: 13.5 in. / cm (including all knobs / connectors) Weight: lbs / 5.09 kg Power Requirements: V, Hz A/C (power cable included)

Russound SDB6.1 6Zone Matching Volume Control 6 Pair Speaker Selector SDB-6.1 The SDB-6.1 is a highly efficient dual-source speaker selector that controls up to six pairs of speakers. The front panel provides a separate volume control for each speaker pair, allowing you to adjust the volume in each room from one convenient location. With two amplifier inputs, the SDB-6.1 allows you to choose either program in each room. Each zone also has an on/off switch, which allows you to keep the volume control at a set level while turning the speakers on or off. The SDB-6.1 uses high-quality impedance-matching autoformers to maintain a safe operating load at the amplifier while distributing maximum power throughout your system. Designed for use with either 4- or 8-ohm speakers, the SDB-6.1 is equipped with internal jumpers to select the degree of impedance matching based on the impedance of your speakers and your amplifier's impedance requirements. Standard Features Lets you select music and control volume in six rooms from a central location Dual amplifier inputs allow a choice of program in each room Printed room labels included Detachable snap connectors are color coded for easy wire termination Selectable impedance matching accommodates 4- or 8-ohm speakers High-quality autoformers provide trouble-free performance for years Specification: Shipping Dimensions 12.0" (W) x 7.0" (H) x 20.5" (D) (30.5 x 17.8 x 52.1 cm) Shipping Weight 10.8 lbs (4.9 kg) Connector(s) Detachable 4-pole color-coded snap connectors Impedance Matching Type Autoformer Max Wire Size 14 AWG (1.9 mm) Power Handling 150 watts RMS continuous per channel Speaker Impedance Min: 4 ohms Volume Control 12 steps; total attenuation 42 dB Zone Audio Controls Volume knob, on/off, Amplifier A/B switch

FREE* Shipping on this item This item is sold brand new. It is ordered on demand from our supplier and is usually dispatched in 10 to 15 working days. We urge you to please read shipping details before placing your order. --------------------------------------- NVR 1. H.264 video compression 2. AHD/NVR/DVR three-in-one 3. Support multi-mode switch 4. AHD: 4CH*720P/AHD + Analog: 2CH*720P / IPC: 4CH*720P 5. Synchronous palyback: D1/CIF/720P/960P 6. Analog video input: 4PCS BNC port (Level: 1.0Vp-p impedance: 75ohm) 7. Audio input4PCS RCA port (Level: 2.0Vp-p impedance: 1kohm) 8. Two-way audio input: 1PCS RCA Port(line level impedance: 1kohm) 9. Multi-mode switch AHD: 4CH*720P/ A HD+Analog: 2CH*720P+2CH/ Analog: 4CH*960H IPC: 4CH*720P 10. HDMI/VGA output: 1024*768 1280*720 1280*1024 11. CVBS output: 1PCS BNC Port (Level: 1.0Vp-p impedance: 75ohm) 12. Encording resolution: D1/CIF/720P/960P 13. Frame rate: NTSC: 1~30FPS/S; PAL: 1~25FPS/S 14. Audio output 1PCS RCA port (line level impedance: 1kohm) 15. Stream type: Combine streams / video stream 16. Playback resolution: 1CH AHD 720P@25fps / 4ch D1@100/120fps / 4ch 720P IPC@100/120fps 17. Synchronous palyback: D1/CIF/720P/960P 18. Support SATA each port support max 4TB HDD (not included) 19. Chassis: 0.8U IP Camera 1. 1.0MP high resolution: 1280*720 2. 2.0MP 3.6/4.0mm lens 3. Color 1/4 inch HD-AHD 1.0 Megapixel CMOS sensor 720P IR Cut 4. GC1004 + NVP2431H / OV9712 + NVP2431H 5. 24pcs led light 20m Max IR distance with OSD 6. Transmission distance: Over 500m via 75-3 coaxial cable 7. Video Frame Rate: PAL: 25fps/720P NTSC: 30fps/720P 8. Electronic Shutter: Auto: PAL 1/50-1/100000Sec; NTSC 1/60-1/100000Sec 9. Waterproof IR Bullet Camera + Dome Camera --------------------------------------- See what else we're selling