bifwynne

Responses from bifwynne

Suggestions please!! --Need to replace vintage Audio Research VT 200 Tube Power Amp
Congrats!!!  Good decision.  I wish you many years of listening pleasure.  I have some "care and feeding" suggestions.  First, as you now know, the amp is heavy: 75 pounds as a stand-alone; 100 pounds when boxed up.  Consider ordering a bunch of b... 
Linda Ronstadt
+1 arctikdeth 
Suggestions please!! --Need to replace vintage Audio Research VT 200 Tube Power Amp
What gpgr4blu says makes a lot of sense.  What he did not speak about is the difference the SE upgrade made to the stock Ref 150.  I owned the Ref 150 and had ARC do the SE upgrade.The SE upgrade is more than just a KT-150 tube drop in.  The SE up... 
Suggestions please!! --Need to replace vintage Audio Research VT 200 Tube Power Amp
Karmicg … as far as I know, the Ref 150SE is still in the ARC lineup.  See here: audioresearch.com/product/reference-150-se/ (www prefix left off)You raise a good question about muscle power.  The VT-200 is rated at 200 watts/per channel.  The Ref... 
Suggestions please!! --Need to replace vintage Audio Research VT 200 Tube Power Amp
Ooops typo:   … (iii) has a relatively low output impedance for a tube amp (approximately, **.6** ohms (i.e., less than 1 ohm; damping factor is 14) off the 8 amp taps and even lower off the 4 ohm taps).   
Suggestions please!! --Need to replace vintage Audio Research VT 200 Tube Power Amp
Charles1dad is correct.  JA measured the Proacs sensitivity to be 85.5db.  JA wrote: "The speaker's sensitivity on the HF axis (measured using B-weighted noise) was somewhat lower than specified, at 85.5dB/W/m vs 89dB/W/m."  In my opinion, I would... 
Suggestions please!! --Need to replace vintage Audio Research VT 200 Tube Power Amp
To the OP.  Sterophile reviewed what appears to be your speakers, here:stereophile.com/content/proac-response-4-loudspeaker-measurements(I deleted the www prefix in case the link is deleted.)  If this is your speaker and you plan on keeping the Pr... 
Am looking for a tech to work on my really old equipment AND
Agree with cleeds.  Call ARC and ask for Greg, who took over after Kal retired.  The only caveat is that with this COVID business going on, ARC may not have quick turn-around.You may also consider asking ARC to refer you to a local (or at least cl... 
Questions on KT150 tubes
Upscale Audio comes though …. kudos!!This is an update to some old posts about sourcing KT-150s from third party tube vendors.  Just bought 2 quads of KT-150s from Upscale Audio.  I had several telephone conversations with Kevin Deal and a UA serv... 
Audio Research Ref 10 vs 40th Anniversary preamp
I concur with tattooedtrackman.  I am on the list for the Ref 6 SE upgrade, which I am dubious will make much of a difference.  The main changes are the power supply caps are getting switched out and some of the wires too.  I look forward to being... 
Tube amp recommendations to drive Paradigm Tributes
I've heard the Tributes at a dealer many years ago.  They are a terrific speaker.  I compared them against an A'gon favorite and was stunned.  They ate the competitor's lunch.  IMO.  Ok, ... when I A/B'd the Tributes, the dealer used an ARC VS 115... 
Audio research ref 160M vs ref 250SE
Biketony, check me on the internal circuit breaker feature on the Ref 160M (S).  If ARC added that feature, that's another maintenance headache that is eliminated and another "buy" point in favor of the 160M (S). In the old days, if a power tune b... 
Audio research ref 160M vs ref 250SE
Well here is a factor that may drive your decision.  ARC is now charging $275 per tube for matched KT-150s.  I surmise that the Ref 250SE runs twice as many KT-150s as compared to the Ref 160M.  If so, … do the math and think how much tube replace... 
Why aren't new vacuum tubes as good as old ones?
This thread is very timely.  I own an ARC Ref 150SE amp.  My amp uses 8 KT-150 tubes.  I either read or heard that KT-150 QC has dropped over the years.  I understand that ARC and some of the major tube retailers have a high KT-150 reject rate.In ... 
Can you tell the difference between Tidal and Spotify
Ok, time to embarrass an old guy.  What is MQA???  How does it work.