2. amps-preamps
  3. 1057037362

Need some audiogon expertise

Hi all, I am having a little problem here with thin bass. I am not really sure where to start. Some help would be most apprecieated. I have heard some say tubes in preamp but i dont feel that 2 little 6922's can be causing the music to be so thin but maybe so. Heres my list of equipment.

California Audio Labs Icon/Powerboss
Audible Illusions L-1/matched pair of 6H23-EB
Aragon 4004 mkII
Sansui TU-717
Vmps Tower 2/R's
Acoustic Research 12 guage
Radio Shack fusion IC's throughout

Stand alone i've not heard of any of the components having the traits of thin bass. But obviously i have something causing this.

Room is 22 x 14 x 8. Speakers are on the short wall placed 2 1/2 feet from back wall and 3 feet from sidewalls toed in directly at my listening position which is 10 feet from speakers.

Thanks for the help.
kool39

Showing 4 responses by marakanetz

marakanetz's avatar
marakanetz
5,473 posts
 
i'm not talking of the aragon amp.
i'm talking about preamplifier that might not have in reality specifications for a full range.
marakanetz's avatar
marakanetz
5,473 posts
 
Kool,
Celtic probably speaking of some magic cables that act sort-of like components giving large bass "extentions" right?
Other than that I guess your amp may need an upgrade.
Shop for Bryston 3b-st. It's affordable and has a nice deep bass.
marakanetz's avatar
marakanetz
5,473 posts
 
Sean, whattafool I always mistake Aragon for Adcom i.e. finger with ...&^%$% if you know what I mean...:-)

I think you nailed it with amp/pre synergy since the output impedance of L1 is arround 2k.
marakanetz's avatar
marakanetz
5,473 posts
 
Output impedance usually is correctly specified in the manuals but the freequency range sometimes isn't or if even specified the levels usually hidden.
Preamp might be at fault of not having "full-enough" range and needs either internal upgrade or replacement.
I'd increase negative feedback or introduced the global feedback if one is absent in the amp. Also I'd replace stock volume control on alps pots.
For a replacement I'd look for Audio Research older units that are far more superior than L1.
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