Tannoy System 800A Active Monitors. Excellent physical and working condition, used gently, sparingly, in an in-home, smoke free studio.
The Tannoy System 800A Active Monitor uses a dual concentric eight-inch driver and two specially. Designed power amplifiers with active crossovers. Designed for the recording studio, the 800A's operate with no sonic difference when placed on the meter bridge of the mixing console in either "landscape" (horizontally) or "portrait" (vertical) position. The eight-inch Tannoy Dual Concentric type 2046 driver is used in the 800A.
With all sound emanating from a single "point source", the dual concentric driver concept has been the chief advantage and mainstay of the Tannoy design. There is a dual magnet assembly for the HF section with its "tulip" waveguide and the LF section with its injection molded polypropylene cone.The HF diaphragm is made from an alloy of aluminum and magnesium and suspended by a inert molded nitrile rubber surround. The HF voice coil is made of high temperature copper wire bonded to a "kapton" former fitted onto the outside of the diaphragm's skirt. For further thermal proofing, the voice coil has a ferrofluid filled magnetic gap... Or the space between the moving voice coil and the magnet assembly.
The LF section uses an injected-molded polypropylene cone surrounded by high compliance nitrile rubber suspension. Interestingly, the shape of the LF cone matches the HF hyperbolic waveguide so that the two waves (LF and HF) remain spherical and perpendicular... A fancy way to say time-aligned.Having a great driver does not mean much without proper cabinet design. The speakers measure 275mm X 450mm X 290mm and are octagonal shaped said to contribute to the overall performance of the system. Each of the four corners is flatten and all other usually 90 degree edges are rounded off. This design, along with using a very dense and thick MDF panel construction material, is said to reduce low frequency resonances and increase efficiency by minimizing the mechanical transfer of acoustic energy to the cabinet. The cabinet also has internal (optional) metal shielding to prevent the speaker from affecting video monitors. The worst case minimum distance you can put a video monitor next to the 800A is only 13cm. Active Crossover, Power Amp Back Panel. The internal active crossover splits the incoming signal into LF and HF components.
The crossover frequency is 1600Hz. There are two 90-watt (RMS) power amps, one each for the HF and LF drivers. The back panel of the speaker has a combined XLR/jack input socket and a -10dBu or +4dBu level switch. There is a HF Control switch for flat, -2dB or +2dB changes to the high frequency response. I liked the flat position with the +2dB seeming too much of a change although if I was working in an extremely dead room, I probably go with it.The LF Control has just two positions: Free space and Half Space. Free Space extends the low frequency below 150Hz and was the way I used the speaker since I do not use subwoofers. Half Space sets the monitor to its intended response and removes the subsonic protection for the LF unit for sounds under 30Hz. In any event the 800A's LF driver definitely "pumps" away with low frequency content when cranked to any decent volume. The back panel also has switching for 110/220 AC voltage, fused IEC connector and on/off switch. The rear panel does not get overly hot like some other powered monitors I use. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Speakers". The seller is "sashdog8" and is located in this country: US. This item can be shipped worldwide.
, Amplified, Built-In Stereo Crossover