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Home / Product Category / SPEAKERS / Ceiling Speakers / Commercial 70V Ceiling Speakers / 25 Watt Commercial 70V High Power Mono In-Wall Rotary Style Volume Control w/Thru Output Easy Daisy Chain Installation

25 Watt Commercial 70V High Power Mono In-Wall Rotary Style Volume Control w/Thru Output Easy Daisy Chain Installation

Product code: MVC-25

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Features & Specifications

Industry first unique design featuring Thru Output for easy daisy chain installation, high power 100W. New daisy chain design adds thru output that by passes the transformer allowing additional daisy chained Volume Controls for maximum flexibility, No need for external splicing.

Decora Style high -quality auto transformer provides advantages of excellent frequency response, low insertion loass and reliable performance for volume control applications in 25 and 70 volt systems. Attneuation is accomplished in ten make before break steps plus positive off position (no stop between maximum and off position to prevent switch damage). The attenuation features removable input/output terminal blocks, two in, tow out and two optional for through output for daisy chain connection. An attractive alternative to commercial series attenuators mounts into most single gang E.O boxes. UL listed white and ivory plastic plates with matching skirted knobs in Decora style.

The OSD Mono 70-Volt Volume Control provides excellent frequency response, low insertion loss and reliable performance for volume control applications in 25-volt and 70-volt systems. There's no stop between the maximum and off positions, which prevents switch damage. Featuring silver-plated contacts for noise-free operation and a removable terminal block, the OSD Mono 70-Volt Volume Control comes with white or ivory plastic plates with matching skirted knobs.

Specifications

Power Ratings & Transformer Taps

Power Rating:

The 70v mono volume control are rated at 25W, 50W and 100W so the speaker connected to it needs the transformer setting to be equal or less than the rated watts of each 70v volume control. You can have multiple speakers connected to one 70v volume control but total wattage must be equal to or less than the rated wattage of the respective 70v volume control that you are using.

Transformer Taps:

For a 70v speaker, whether a in-ceiling or wall mounted speaker you shouldn't require more than rated watts to produce more than enough sound. Normal to get the volume right you would need to experiment with the separate wattage settings (10W, 5W, 2.5W, 1.25hW) at each location to get the volume you desire. It is more flexible to add an attenuator (volume control) for each speaker. If you add an attnuator you would turn it to full volume then select the transformer tap which gives you the most volume you could use.

OWNER'S MANUAL

  View Owner's Manual          

QUESTIONS & ANSWERS

2 Questions & 2 Answers
Al
from calif. asked:
January 3, 2018
hello ran into a problem... i need a 3 gang junction box TO FIT 3 OF THESE WHAT junction box DO YOU SUGGEST ? STANDARD Junction BOX will not fit 3 of these the volume controls large (to wide) will not sit side by side in a 3 gang junction box the vc is too wide to sit side by side in a standard BOX and a 3 gang junction box faceplate will not fit .either. this is a problem i ran into on a install i CAN NOT USE P RINGS need a 3 gang junction box. can you suggest one?
1 Answer
Hi Al: We are working with our assembly house to address your issue.Apparently the transformers are to wide so you would need to go with single gang boxes. Or checkout out two zone 70V speaker selector which houses two independent MVC100 70V mono speaker selectors and allows you to daisy chain the two zones or add another 2 zone speaker selector and stack them which would take up less space than the width of the three MVC25. Sorry about that, stand by while we address the issue with the factory. TL/4726
Customer Service - Q&A
on January 15, 2018

Dennis L.
from Denver CO asked:
November 18, 2017
Is the speaker output of this device rated at 8 ohms or is it 70 volt as well as the input?
1 Answer
Hi Dennis: This volume control is for Mono 70V use only. The input signal must be 70V to begin with than connected to a 70V Transformer either built into the respective speaker or an external 70V Transformer wired to the 8 ohm speaker with the respective 70V tap setting. These do feature both an input and through output so you can daisy chain additional volume controls. TL/4657
Customer Service - Q&A
on November 24, 2017

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