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R972 Trinnov Optimizer Application Notes Curt Hoyt trinnov.com

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Use suggestions in this document at your own risk. Always consult your Sherwood R972 Operating Instructions.

Introduction

This document is to serve to get you going towards a successful and rewarding Trinnov experience- where the speakers

disappear and the image comes to life. The R972 with Trinnov is a “gateway” product into the Trinnov world, so each of

you are experiencing something unique. Based on Trinnov’s Version 2 architecture, it’s extremely powerful. The

limitation relative to the Trinnov advanced Professional and ADA units is that the Trinnov settings are fixed. Therefore,

to get the most out of it, one must work within the ranges. The goal of this document is to anticipate some of the issues

you’ll run into and put you on the path to success with your Trinnov experience. Included are some unusual

configurations that may be experimented with. Every home theater integration is different, with differing strengths and

limitations. We anticipate that this doc will evolve over time. If you have a unique Trinnov success story you would like

to share, please forward your comments.

Consulting

Most high end home theater applications of Trinnov are supported by Trinnov consulting services. We help integrators

work out the details where the results need to be anticipated in advance, or solve unusual tuning issues. This document

should give you a feel of what goes into improving your own installation. Should you want to maximize your Trinnov

experience with professional guidance, please contact us.

Notes for optimally setting up the R972 with Trinnov

Goal: get maximum performance from the automated CAL sequence. The R972 automatic calibration system based on

the Trinnov Optimizer Pro Version 2.0. The internal settings are based on optimizing the listening as well as protecting

the loudspeakers. The following are some tips for getting the maximum out of the remarkable Trinnov Optimizer.

The Trinnov Cal performs (4) tasks

(1) Measures relative levels of loudspeakers and Subwoofer(s)

(2) Measures -6dB point (where loudspeaker drops 6dB from nominal level or Reports Xover Point for Bass Management)

(3) Measures loudspeaker and room characteristics (time and amplitude)

(4) Determines loudspeaker location in 3D

The Computation phase computes the following

(1) Sets relative levels of loudspeakers and Subwoofer- To maintain signal DIGITAL HEADROOM, any relative DIFFERENCE in

level that is corrected for results in a corresponding DROP in overall level to insure no distortion from digital “overs”

(program exceeding maximum level). Therefore if loudspeakers are relatively well matched to each other, digital levels will

be optimized. Check reported levels- particularly between loudspeakers and Subwoofer. Adjust Subwoofer to get it close

to minimize the amount of level change that must be done by the system- thereby improving the R972’s “gain structure.”

(2) Sets the crossover point (Reported - 6dB point for speaker). Take note: if all speakers are identical, then the relative

crossovers should be the same. They may not be because of speaker issues or because of room placement changing the

bass in the crossover region. You can mitigate this by moving the speaker to see if there is a change. If you believe a

speaker is damaged, swap it’s location with another to see if results are consistent.

(3) Sets FIR and IIR filters (all speakers, where Subs have IIR only) to compensate loudspeaker and room characteristics (time

and amplitude). The filters work very well with Satellites or full range speakers. If you have a choice of speaker type and

you want higher sound levels, do not use small Satellites that have limited SPL capabilities. The maximum correction has

necessarily been limited to not damage typical consumer speakers, and is set for a maximum of +6 boost and -12dB cut

correction for all speakers, including Subwoofers. If your Subwoofers appear to have less bass then you desire, it will be a

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