Re: System with no real sub
That's true, but I have had some systems that pounded pretty good down into the 40hz range using only 4 6.5" woofers. Currently I have 2 DLS 6.5's in my car. My sub is in the garage. The 6.5's don't rattle the windows, but there is a pretty good amount of clean bass output. More than enough for most regular loud listening - unless you listen to bass music, or want your teeth to rattle. It sounds good enough without the sub that I have considered not putting the sub back in because of the weight.
What I have found though is that you need to have a lot of clean power to get good tight bass out of small speakers. I have not used any of the DIY drivers except tweeters. I am happy with the DLS 6.5 bass performance. I was not happy with the Focal bass. The Focal's didn't do much below 80hz in the same basic environment with the same amps, etc.
'06 G35 6MT Sedan - now bose free -- Alpine IVA-W200 w/ H701, C701, and TR7
DLS Iridium IR3 and IR1 and Adire Extremis 6.8 front stage
Arc Audio 4150XXk for mids and tweets
Arc Audio 4150XXK Bridged for all 4 midbass's
Adire Extremis 6.8 back doors for added kick.
JL12W6V2 in a 1cf sealed w/ PDX1.1000
Refs: Bodegabay, 250+ (100%) on ebay with same username.
04 CBR1000RR - SOUND SYSTEM BY MICRON