2. amps-preamps
  3. 150764-135664

Audio Research VT100 MK1 and LS15 HELP!!!

I recently bought this set VT100MK1 and preamp LS15 and while I was at this seller house he demonstrated the sound from his online Tidal on TV connect optical to the DAC Luxman DA - 06 then this go to the preamp LS15 and out into the VT100. This set up sounds amazing at his house. However, when I came home play CD from the Sony X1100ES Blu-ray player RCA output into the LS15 and out to the VT100 and it sound horrible - no bass at all in any type of music.  The sound sometime muffle and not clear and most importantly the bass missing tremendously. Im using a pair of KEF R900 Speakers. What is wrong here? can anyone help me correct the sounds? it is because I didn’t have the Luxman DA - 06 DAC? or it is because I don’t have those fancy hundred - thousands of dollars cable?  or the CD source is playin at 41khz /16 bit not high enough signal?  

This is my first system and I don’t know why I can’t get that high fidelity sound from the ARC equipments.  I'm waiting for the Audioengine B1 to arrive so I can stream Spotify into the LS15.   What is wrong with my set up?  Thank you in advance for helping me solve this.
kentrent
lowrider57's avatar
lowrider57
5,396 posts
 
Btw, one tube wouldn't cause such a serious problem. It would be the pair or could be tubes in the amp.


kentrent OP
71 posts
 
I still cannot figure out why the system doesn't have any bass like it should.  thank you so much for you help and time.   I really appreciate you and everyone who provided advices.  wish I could get fix soon... 
akiravelvet's avatar
akiravelvet
72 posts
 
what were the speakers that the seller had? could it be that you liked the bass on those speakers more than the ref's? different speakers will do different things in the bass department. Also the seller might have a really good dialed in set up. Are you sure there is an actual problem or that you are just disappointed from the sound of your setup?
akiravelvet's avatar
akiravelvet
72 posts
 
Ive demoed certain components to find that dynamics, bass, warmth, etc. were lacking incredibly. Could you ask the seller if they can come over and possibly bring the dac with them? Could you demo different components at a local shop? any professionals that can look at at your setup? 
kentrent OP
71 posts
 
@akiravelvet

the speakers he has is 

Pure audio project - Quintet 15



ive tested the r900 speakers with another amp and its sounds wonderful much bass and strong. Switched to the ARC i just bought its missing about 60% bass compared to the original amp i have (MAC1500). And tonight I discovered the LS15 one of the tube (V3) has white sparks when i turn on. So now i can only conclude that either the preamp LS15 or VT100 amp is defects. I contacted the seller and he’s not responding- avoiding me. So I’m kinda bumped and feel down that this happened to me. I wanna ask him for money back but i doubt he’ll give back.
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