| Widex Quattro Model Q-9 Behind-the-Ear (BTE) Transistor Hearing AidThe Widex Quattro 		was a digitally-programmable analog hearing aid. It allowed the person 		fitting the hearing aid to program it for maximum power output, gain, 		low and high cut filters and an inverse presbycusis filter. Like the Q-8, the Q-9 model was 		designed for mild to moderate hearing losses. It featured a toggle lever 		to control volume (push up to increase volume, push down to decrease it) 		rather than the usual wheel type used on most BTEs. The 		Widex Quattro Q-9 hearing aid had the same parameters as the Q-8, but was 		equipped with a dual-port directional microphone. The hole above the toggle volume control is the 		rear port for the directional microphone. (See top picture.) The Q-9 uses a single microphone with  two openings (ports)—one 		to the front and one at the back—to make it into a directional 		microphone. | 							|  |  				| Click picture for larger view |  				|  |  				| 				    |  				|   |  | 
					| The Widex Quattro Q-9 in it's original box. It came with one 		of two styles of remote control units—the larger model (pictured at right) came in maroon or grey color. Here is the		Widex 		Quattro manual. (Be patient as it is about 17 Mb so takes a few 		seconds to download and open.) Pages numbered 9 and 10 explain the use 		of the (large) remote control.
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					| Back of the large remote showing the battery compartment and the three AAA batteries 		that powered it.   | 							|  |  				| Click picture for larger view |  				|  |  | 
		| The smaller model, which came in black, is shown here. This remote 		measures 3" x 1 13/16" x ¼". It was powered by two CR-2032 lithium 		batteries.   | 							|  |  				| Click picture for larger view |  				|  |  | 
		| The remotes, which offered four memory choices, also served as the 		programming unit for their hearing aids. The hearing aid fitter inserted a 		programming key (shown on the right) into the slot (center), set the parameters and then locked these parameters in 		by removing this key.   | 							|  |  				| Click picture for larger view |  				|  |  | 
		| The two remotes beside each other for comparison in size and 		placement of controls. The buttons have the same function, but the 		layout between the two models is slightly different. The "M" and "T" 		buttons lie between the left and right volume control buttons on the 		smaller unit instead of below them.   | 							|  |  				| Click picture for larger view |  				|  |  | 
				| The Widex Quattro Q-32 (left) beside the Q-9 (right) showing their 		relative sizes.   
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