Why did Bose remove reverb decay time setting from the new T4s

I have had the ToneMatch T1 for years and just bought the ToneMatch T4s because it was touted as having better effects and more functionality. However I am really disappointed that they removed the ability to change reverb decay times from within the reverb type category. I use this function all the time when I am playing because different songs have different tempos. That was one of the best features on the T1. It is not just a one size fits all in plate, small, medium, large categories. 

I have been using the L1 Model 2 with the T1 since 2010 as a full time musician. I have really enjoyed the Bose experience until this oversight. Now it appears I will have to send my T4s back unless Bose addresses this issue. I don't want to use another company's mixer, but I certainly will because this my livelihood and $600 is a lot of money for less functionality. End of rant


Hi Donaldjon,

Welcome to the Bose Portable PA Community. Thanks for the great question.

The decay time parameter is not gone, just expressed in a different way.

First - have you updated your T4S to the latest firmware?

T4S/T8S Firmware Update Instructions

Bose addressed customer concerns about the reverb.

T4S Reverb Time Parameter

The T4S/T8S have a different reverb engine. The way the time value is expressed is different.

T1 - time is expressed in milliseconds


Global Reverb Settings are different from the T1 ToneMatch Audio Engine.
T4S/T8S ToneMatch® Mixers Global Reverb settings
Menu Main or Aux 1 (apply following settings to Main or Aux)
Type Plate, Small, Medium, Large, Cavern
Time Expressed as a percentage of the time range for each reverb type
Reverb Type         Time Range
Plate 0 – 4.6 s
Small 0 – 0.8 s
Medium 0 – 1.9 s
Large 0 – 3.5 s
Cavern 0 – 7.0 s
Balance Percentage (ratio of early/later re?ections)

The decay parameter is not gone, just expressed in a different way.