[James Tanner]

Hi Folks,

I have the final prototype of the Bryston BAX-1 Digital 3-Way Crossover at home this weekend and it should not be too long now before we can release a fully Active version of the Model T speaker.

The system would consists of:

•   One pair of Bryston Model T Signature Speakers (no outboard passive crossover)
•   One Bryston BAX-1 3-Way Digital Active Crossover
•   Six (6) channels of Bryston power


james

[mrhyfy]

Need an extra set  of ears??

[James Tanner]

[vegasdave]

sounds heavenly!

[Armaegis]

What are the inputs/outputs on the BAX-1?

I'd expect the usual analog ins, but it'd be quite interesting if there were digital ins and outs (hey now, some of us might be crazy enough to have three dacs...)

[James Tanner]

What are the inputs/outputs on the BAX-1?

I'd expect the usual analog ins, but it'd be quite interesting if there were digital ins and outs (hey now, some of us might be crazy enough to have three dacs...)

Hi

Yes there is a Left And Right Analog input and a stereo set of Woofer/Mid/Tweeter Analog outputs - NO digital in or out.

james

[James Tanner]

Hi Folks,

Spent last week tweaking the Active Crossover and the Model T speakers in the anechoic chamber  - please see the 'Listening Window' (upper graph) and 'Sound Power' response in the graph below.





james

[CanadianMaestro]

Why does the power (red line) fall off in the midrange and after?

[James Tanner]

Why does the power (red line) fall off in the midrange and after?

LISTENING WINDOW and SOUND POWER:

In a loudspeaker the ‘listening window’ is an average of a front set of curves whereas the ‘sound power response’ is an average of all the curves right around the whole speaker.  What we actually hear seems heavily weighted to be a balance between these two conditions.  The listening windows frequency response should be very linear (flat) across the entire audio band but the sound power should fall off by 8 – 10dB by the time you get to 10kHz while still remaining linear in its march down from the bass frequencies.

Striking the proper balance between these two is extremely important to the sound of the speaker.  Keeping the listening window and the sound power both linear is not an easy task and is where most speakers fall down. 

Typically there is a lot of attention paid to the linearity of the direct on-axis frequency response by reviewers and knowledgeable consumers but it is really just one curve in the mix of 64 curves Bryston utilized in the design the Bryston Model T loudspeaker.