Sloppy, muted bass response on Hegel h190


 Hi, I have a Hegel h190 integrated, a pair of Kef  104/2's from 1985 that have been rebuilt but I don't know whem, the speakers have new donuts and new silver Kef tweeter.  I mostly use the sonus connect.   Also I have a 15-year-old Sony sacd disc player. I'm getting low, sloppy bass when I play either cd or wifi.  This is the second amp.  The first one exhibited same issue.  Same amps.  New.

I only have one set of speakers.  I am thinking perhaps a capacitor in Kefs?  This amp should have solid punchy bass, but it is not there.  Speaker cables are blue jean 10 ga banana plugs.  IC are blue jean also.  I am at a loss. I heard the demo Hegel played on these components and it was fabulous.

any thoughts?  I hate to sell everything and start over, but I am at that point.
thank you
crossfree
I've tried the Hegel H190 on the KEF LS50, Reference 1, Tekton Impact Monitors, and they all produce solid tight bass. 
In my experience, Hegel's after sale support as provided by their US Distributor has been entirely satisfactory:

Hegel Music Systems USA
East Long Meadow, MA
Email: usa@hegel.com
Phone: (413) 224-2480
www.hegel.com

Factory authorized service was provided by: 
Approved Audio Service, Inc
49 Commons Drive
Litchfield, CT

https://www.approvedaudioservice.com/contacts.html

Email:  repair@approvedaudioservice.com
Phone: 860-567-5801




@teo_audio

10g speaker cable is usually a bad fit anywhere, btw....

Can you please elaborate on this? I recently purchased some 10g speaker cables from BlueJeans and can't tell them apart from $1k AQ.

I own both a Hegel h160, and a h590.
bass on both are quite good. With a damping ratio of 4000, maybe the speakers just don’t respond as tightly as you desire. Take another speaker on demo and see. I have the Monitor Audio Gold 300 5th gen. The bass is phenomenal. Even with the silver 300s that I had previously, the bass was noteworthy. I really don’t believe it’s the amp.