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I promised myself I'd never do this

You know the threads, where people ask for help matching this speaker to that amplifier (s)? Always seemed like wasted space in a lot of ways to me, but here I find myself pondering which way to go with my system. So, I break my own golden rule, and ask for your advice. The system: Oracle Delphi IV/SME345/Grado Reference, Magnum Dynalab Tuner, YBA CD Integre CD player, Audio Research SP14 Preamp, (2) Classe Audio DR8 amplifiers in bridged mode, Martin Logan Quest Z speakers bi-wired. Various quality IC's and power cords. I'm considering changing the amps, primarily due to a "live" listening room that would benefit from a more mellow sound, and the amps have more power than I'll ever need. Treating the room is out of the question, lawyers cost more than my rig. Naturally tubes come to mind, but the care and feeding of tube amps can be significant, solid state are plug and play and forget about 'em. I'd likely be looking to spend around $3k for a used amp, any suggestions on where to begin? Thanks in advance to any of you who take the time to respond, Jeff
jeffloistarca
jcbtubes
400 posts
 
Jeff- Without specifics about your cables and power cords, it's a little difficult to get the whole system approach. Obviously, great power cords (Shunyata KC, FIM GOLD, NBS 0) can make a HUGE difference. Darker/warmer cables could help. A warmer sounding pre-amp could also match better with your system. Tubes mate very well with the esl part of your MLs, but the bass may suffer. An area not often touched upon is isolation/coupling devices and how they effect system tonality. You could try softer units, like Navcom/Sorbothane and other polymers, for feet under the front end equipment to darken the sound. However, this will also effect imaging and soundstaging. Reduce toe-in of the speakers to start. I'm not trying to discourage you from getting into tube amp(s) since they will excel on panels. It's just that tube amps don't have to be dark or mellow sounding. The majority of the problem may exist else where. If you'd care to discuss this further, feel free to email me. Goodluck.
beemer
444 posts
 
Jeff: You've got the right idea but I feel you are headed in the wrong direction. I'd lose the SP-14 first. Try a VK5i BAT preamp for short money, or VK30, 30SE. I lived with an SP-11 for a long time. Don't get me wrong, Audio Research is a great company, but they do have their own sound! The Classe amps you have are good for the long run, classe and M-L are a match made in heaven. I have Quest Z's myself! Best of luck! Paul
jeffloistarca OP
1,004 posts
 
Food for thought guys, thanks. I'm using Synergistic Research AC Master Coupler power cords on the amps, a high-end YBA cord on the CD, fixed cord on the SP14, and the Oracle table needs it's own cord. I'm using Transparent and MIT IC's. I've reduced toe in to almost nil, helped a little bit, but not enough yet. I'm using Bright Star bases under pre and CD, and a Seismic Sink under the 'table. I'm about to try out an isolation base from Cambridge, basically a metal shelf and you stick 5 of their little balls under it. Not sure what the balls are made of, probably some sort of rubber or sorbothane. Interesting that Paul feels the pre could be improved, I figured any tube preamp would add just enough bloom to offset the solid state amps. Oh, about 90% of my listening is primarily rock, both old and new. I'll mull this over some, thanks!
dill
2,525 posts
 
I have an ARC SP14 also and really like it, but remember it is a hybrid and the only tube is in the phono stage. So when your line stage is activated, you are solid state all the way. Move the Logans out into the room as far as you can and away from the side walls. If you can, use spikes to couple the speakers to the floor. Also experiment with toe-in and tilt back. Martin Logans are a pain sometimes to position correctly and suffer from the "venetion blind effect" to a certain degree.
jeffloistarca OP
1,004 posts
 
The BAT VK30 does look like a good piece of gear, I'd need to find one with a phono stage. Scouring the web, haven't seen one for sale, but patience is a virtue. What balanced interconnect would you recoommend? I'd need 20ft run from pre to amp. Thanks, Jeff
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