Group Delay

Hi,
What do you think of this group delay for a 12" infra (35-60Hz)?



Thanks, Giacomo. smiley1

Anyone? smiley2

looks rather spikey to me which could obviously result in poor fidelity

needs be as smooth as poss

Thanks!
Even with a bandpass box?
How can i flatten it out?


Thanks, Giacomo. smiley1

make the chambers smaller?

would help if you put up the general schematic of the box.

im sure some others will be able to give more helpful advice also.

Here it is! smiley2

Bump! smiley1

GekoMusic94 wrote: Bump! smiley1

You've designed a very sharp bottom-end rolloff. This causes the group delay peak (amplitude response and group delay response are related). But a sharp rolloff as you've designed also gives the best LF extension and efficiency for a given cabinet size.

So you could choose to soften the low-end knee and get less GD peak but a slightly higher -3dB point.

But I think 40ms at 35Hz isn't too bad. I'd maybe try and get it down to 25ms or so and call it a day.

GD is much more audible in kick and upper bass, so it's important not to develop a second (big) GD peak at the upper end - you have not, so that's good.