I need more details. Are there 3 different Door bell buttons. No. There is only one button. One button and 3 speakers hooked to the same output? Yes. I am using a Valcom chime unit (model 9927A) with a simple contact closure setup. Each of the speakers is attached to a volume control thru a Niles Audio VCS HUB that has internal impedance matching capabilities (which essentially provides continuity to all of the speakers at all times and it somehow internally monitors the circuit to keep it from overloading the amp). Right now when the speakers are attached to the hub and I press the doorbell, nothing happens unless the volume control for that speaker is turned up. There is no way I can find to bypass the hub unless i physically remove the leads from the speaker and attach them to the Valcom unit. What I want to do is remove the speaker leads from the Niles HUB and insert a relay that is normally closed (thus allowing music to flow through it). When the button at the front door is depressed I want the relay to open (which will remove it from the Niles HUB) and momemtarily re-route it to the Valcom unit. Ultimatley I want the doorbell to take priorty over the speaker so that it will chime regardless of whether the volume control is turned on, off, or even if there is music passing through it.. One Button and 3 different outputs? One one button but three separate speakers (one on each floor). These speakers are normally playing music or mght be "at rest" with the volume control turned off. Can the chime produce enough power for all 3 speakers? Yes. Does the Stereo system have a preamp input? Yes it does but in order for it to work with a direct input to the amp....each volume control would always have to be "turned on" which might not always be the case. A Schematic would help. I am not good with drawing schematics although I can read them most of the time. Here is a block drawing which might give you enough info. If not...let me know what else I can provide. Thanks in advance for your time. Chris  |
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