Xantech.com

Speaker Selectors
SR21	Remote A/B Speaker Relay Module
XSS24100W	Two Source Four Zone Speaker Selector
XSS26100W	Two Source Six Zone Speaker Selector
XSSD2100W	Source A/B Selector And Speaker Selector/Combiner
XSSD250W	A/B Speaker Or Source Selector

Volume Control Data Sheet

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Volume Control Product Manual
Xantech Volume Control Instruction Manual
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Single Zone Volume Control / Speaker Kits

Sample Application Diagram
Speaker Selector Diagram