- Feb 29, 2020
JBL uses a fixed L-Pad in the tweeter crossover for the M2 Monitor speaker.
An 11R 10 Watt resistor is used in parallel with the tweeter and another 13R 30 Watt resistor is in series with the parallel tweeter and 11R resistor.
What this does is operates the amplifier at a higher power output where the amplifier operates at a higher SNR. Also the amplifier operates into a flatter, more resistive load. I use this fixed L-Pad configuration in my tri-amp system. See page 14 https://rephase.org/projects/JBL_M2_crossover.pdf .
In terms of Class AB operation most AB amplifiers overate in Class A for the first few watts. In terms of Sound Quality try it and let us know what you think.
What this does is operates the amplifier at a higher power output where the amplifier operates at a higher SNR. Also the amplifier operates into a flatter, more resistive load.
and I believe this general feature of amplifiers would properly explain and justify my use of Jantzen Audio's 22.00 Ω 10W Audio-Grade Non-Inductive Wirewound SuperRes Resistor for fine tuning of midrange drivers, tweeters and super tweeters in my multichannel multi-amplifier configuration.
I am now very much happy and relieved that my way of eliminating attenuators (ref. here and here) was good and alright!
Thank you indeed for your suggestive notes.