New preamp, loss of low freq.?


Hooked up new preamp, and I lost what I think is some low freq slam. Reasoning behind this?
i have been rewarded with the best cleanest, accurate midrange/highs I have ever heard, but did lose some low frequencies.      Normal?  

Sanders preamplifier is the new addition. 

Should i I hook up my equalizer to  smooth out, and add some low freq. 

it it is recording dependent, I still feel I lost some bass when sanders is in the mix. 

Not complaining, this has completely opened up my energy rc-70's, I have never heard these sound so loud, so clear before.   It's I feel I lost a few octaves in the lower register. 

Better? Leave it, I can definitely get used to this sound, as before it was a small bit boomy, maybe I just need time to adjust, and to let the pre warm up for a couple weeks. 

thoughts, recommendations, tweaks? I suppose I could move the speakers a little closer to the wall, this may add a little more bass. 
128x128arcticdeth
The preamp is just very accurate, neutral sounding.  What I put in is what is going out, nothing more, nothing less, with the onkyo, it was boosting the low freq, per the specs. I guess I am not used to a neutral sound, reproducing exactly what is fed into it, through the speakers without coloration in the slightest. 

I do do have bass, just not as boomy as with the onkyo, it is more controlled, tight, than before.   

I dont know, with all this happening, I still feel. Maybe I bought lemon amps, with their goofy impedance of 10 kohm.  

On on a good note, my speakers are a warm speaker, which makes for a descent combo really, as the highs are rolled off at 600 , so even with the rolled highs' the sanders pre, and McCormack amps really do make a good sounding combo feeding my Energy's. 

I will ill give it a year, or maybe a little longer, to see how I like it. 


arctikdeth, take it easy or you'll blow a gasket.

We now know that the preamp is not capacitor coupled, and can drive the McCormack's 10kohm input load fine 

What was the preamp you used before this Sanders that gave you bass?


Cheers George   

Please give it 200 hours. Keep it playing and you will be happy. All gear needs to run in. That is the "issue". 
Georgelofi;

 prior to the sanders I was using an onkyo p-308 from 1989. 
Also, a B&K pro 10 mc.   The onkyo is adding low freq, the B&K is closer in sound to the sanders I think,.............


will ill try to breathe, promise, I've just had such bad luck over the years, equipment, a job I wouldn't wish on my enemies, and other stuff as well. Sigh- the preamp does not have a sub output, I hate mucking around with eq's. I still have my old onkyo eq from. The early 90's, pristine shape, maybe hook it up one night and see what can be done.   

Oh boy, . 
Thank you to everyone who has helped me. Merry Christmas this season, to you and your families.  

Best!

R.