On Sun, Jul 22, 2012 at 10:54:30PM -0400, Gene Heskett wrote: > On Sunday 22 July 2012 22:14:58 Al Thompson did opine: > > > On 07/22/2012 06:12 PM, Chris Bannister wrote: > > >> For good reasons most mixers have got a 80Hz EQ, so try to increase > > >> it there. However, IMO there's no big difference, if people say bass > > >> is from 50 to 300 or 60 to 250Hz. What notes are played and what are > > >> their > > > > > > AIUI, you can't hear "proper" bass unless it comes from at least a 15 > > > inch speaker. So anything else is just a compromise, right? > > > > It is possible to build a properly designed cabinet that will get fairly > > good response in the low end, just at a GREATLY reduced output. Having > > said that, trying to design a usable cabinet with less than a 15" > > speaker is kind of a waste of time and money, and will result in serious > > compromises. If a cabinet isn't +/-3db down to at least 40HZ, it's not > > a good idea to rely on it as your main monitor. The low E on a bass is > > around 42Hz. The low B on a 5 string is 34Hz or something like that. > > If you mix on a system than only goes down to 50Hz, for example, there > > is nearly an octave of bass guitar that you will have no idea what is > > doing. Same for kick drum. > > At which point I have to tell a story. In 1960, I worked for a bit at a > HiFi store at 5150 El Cajon Blvd in San Diego, CA. > > At that time the newest pretender to the king of the hill was a box with a > 10" driver & dual tweeters. About a 2 feet square face and about 14" > deep, a ducted port bass reflex made by Bozak. The store owner was an > experimenter, so he bought 2 of them, and took one of them apart. He added > some cross bracing to help solidify the panels by coupling each with glued > in bracing to its opposing face, then since it had lots of crepe paper for > internal sound absorbsion, he added about 2x more of it. And he'd ordered > the long throw version of that bass driver, the B10-AL to replace the more > limited throw std speaker. The AL could be driven 3/4" in both directions. > After giving the glue a day to set, a dynaco amp was hooked up along with > the bench audio oscillator, and that puppy amazed us. Using a decent > volume level at 100hz, the oscillator went down, clear to 10hz, without > detecting any of the bass reflexes normal peaks and valleys below 60 hz. > At 10hz, we could hear the air chuffing thru the port, but more > importantly, the room seemed to be bouncing. Hooking up a turntable > typical of then, a Weathers cartridge in a 16" fairchild arm on a 16" > Battleship turntable, he got out the Command record of various instrument > solo's with emphasis on orchestral drums. At the end of the kettle drum > solo, we heard and felt something we had never heard or felt before, > because in the std speaker that looked exactly like the rebuilt one, the > end of the drum solo was when the drummer took his foot off the head > tension pedal, you could hear the squeak of the linkage. Pick the needle > up and move it back 20 seconds and switch the rebuilt speaker in. That > kettle pair seemed to grow cajones with the switch, but the surprise was > that after the squeak of the pedal release on the big one, the player had > given the slack head another whack. The whole room bounced. > > So it can be done, if you are willing to pay the piper. That one went on > the show floor that evening, beside the std one that sold for $245 each, > with a $500 tag on it. He got to do it again, because the guy who gave him > $500 for that one wanted another just like it for his stereo system, for > obvious reasons. > > A walk down memory lane, to a different time & place. I love your recollections, Gene. You have an absolutely amazing memory! You really remember model designations 52 years later? Cheers, S.M. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
