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In the Forum: Horn-Loaded Speakers
In the Thread: A new kid in the block: Sadurni Acoustics

Post Subject: Time alingmentPosted by Jorge on: 4/7/2015

I agree Steverino, IMHO Bass in the most tricky part of audio!
A couple of things I found out that help. Most importantly, Time Alignment! Not just between the channels crossing right to the next frequencies, but the whole system should be time aligned to the 1/8” if possible. It is funny how even tweeters crossing at 10 khz and up affect the sound of bass!
Also the quality of the bass amp is very important, after trying almost all commercial plate amps available I decided that the famous difficulty for “placing” subwoofers, was due mainly to the amps. Try a better amp and everything will fall into place! There came a point where I couldn’t tell the difference between an Altec 416 woofer playing from 200 hz down, and an eminence alpha 15” in the same frequency, with the same crappy amp! If you tried both woofers, you will know they are ages apart!
Also get your impedances right between preamp and amplifier!
And the last key into fooling you is Infra bass: a dedicated channel from 20hz-25 hz down to as low as you can get your subwoofers to go: 16hz-10hz minus 3 dB whatever helps a LOT. Perfectly time aligned, that is a must again, if not it will mud everything up! But when you get it right, you can´t live without it ever again!

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