ADA PTM-1260 The Perfect Dolby Atmos Amplifer

When building a Dolby Atmos 9.1.4 system, the number of amplified channels required grows quickly.  Below is the 9.1.4 design overview from Dolby.

Dolby Atmos 9.1.4 Structure:

That is a lot of channels.  The ADA PTM-1260 allows you to fit all your amplifiers into one rack with the flexibility to support:

• 6 channels bridged at 265w/ch @ 8 ohms || 390w/ch @ 4 ohms, or
• 12 channels not bridged at 77w/ch @ 8 ohms || 140w/ch @ 4 ohms, or
• A combination of those based on the power requirements of your atmos/in ceiling speakers

A Dolby Atmos 9.1.4 system can be supported by two PTM-1260 amplifiers:

• Amplifier 1, 6 Channels Bridged :  Left, Center, Right, Wide Right, Wide Left, with one bridged channel open
• Amplifier 2:
• Bridged: Left Surround, Right Surround, Rear Right, Rear Left
• Not Bridged:  Front Left/Right Ceiling + Rear Left/Right Ceiling

 

Here is what they look like racked.  While they can hold their own weight with the face, these amplifiers are way too heavy to rack without help.  I installed shelves that can slide out to ease installation and support servicing.  I selected Kendall Howard 20 inch vented sliding shelves.  The rack holes line right up on those shelves with a thin foam spacer under the amp.