2. amps-preamps
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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
arcticdeth's avatar
arcticdeth OP
1,572 posts
 
The preamp does not have any capacitor in the output circuit. It has a very low output impedance of only 50 ohms, so it will drive an amplifier of extremely low impedance without any problems. What this means is that the preamplifier is not rolling off the low frequencies of your amplifier. The preamplifier has linear frequency response (as do all other quality preamps).

The solution to your problem is to use a DSP (Digital Signal Processor). With one of these, you can adjust the



thoughts on this???
arcticdeth's avatar
arcticdeth OP
1,572 posts
 
I suppose if I knew these amps were hard to drive, I would have bought others which are more compatible ,  so I'm stuck, and blew my whole fuc**ing rat hole money which I saved for almost 5   Damn years for new amps, stereo, and I end up buying something which is not compatible with many preamps, because of some impedance output, f'n great, just great. Now I'm stuck with them, goddamnet !!!!!!!!!!!!!!!!!!!!!!!!!!!

nothing has ever gone correctly for me, I buy a new amp, breaks shortly after, preamps, with problems .  I'm just gonna buy a Bose wave, and be done with this whole schlock, impedance, I or, output, capacitors, f this
arcticdeth's avatar
arcticdeth OP
1,572 posts
 
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. 


georgehifi's avatar
georgehifi
10,312 posts
 

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   

grannyring's avatar
grannyring
6,466 posts
 
Please give it 200 hours. Keep it playing and you will be happy. All gear needs to run in. That is the "issue". 
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