Originally Posted by
Puffin
Hi Chris, I have read all of the Audio Circle thread you linked to and it found it extremely interesting and informative. Tweaking these things really is a bit of minefield. Despite having tinnitus too I have no problem with the Mid and Tweeter response, it is the LF that for me seems to intrude too far up than I would like. One of the posters said that the LF goes up to 900hz.
I have spent too many years DIYing stuff and tweaking components and often chasing my tail around and around to faff about too much with the Lampz, but I might try some different values for the caps and inductors on the LF to bring it down to 6 - 700hz.
Have you finished tweaking yours?
Lets just say I'm much more focussed and happy than when I started the process. Today I listen to, and enjoy, my OBs more than ever. I too found the bass drivers encroached much too far into the midrange, particularly with the 'cheaper' 15" drivers recommended on the vaious OB forums, which lack quality when playing up there. Unfortunately for me the Saba greencones did not cover low enough frequencies to meet the bass drivers in a good place.
So, I now run different more expensive 8" drivers that can hold their own at lower frequences and quality 15" drivers that intergrade effectively.
Source
SW1X Universal Music Server UMS I Signature with Power Supply Unit PSU I Signature
SW1X USB II
SW1X DAC III Special
Audiolab 6000 CDT transport
Amps
Pre amps -- Hi fi Collective twin mono ladder stepped attenuator, with Charcroft Z-foil and silver wired. And First Watt B1 active no gain buffer.
Power amps -- Welborne 45 SET monoblocks 1.8W / Decware Taboo 6W / Elekit 300B TU-8600SVK plus further improved components 9W / ICE Power 1000W
Speakers
Highly modified Endorphin P17 open baffle speakers containing both vintage and modern alnico drivers and paper cones. All silver wired - 8" Cube Audio FC8 full range drivers and vintage 15" Altec VOTT 416 bass drivers. All sat on Townsend Audio Podium seismic isolation platforms.
BK Electronics XLS400FF Sub.
Cabling
Silver mains cables, interconnects and speaker cables by SW1X
Headphones
HRT HeadStreamer and SennHeiser HD650 headphones