bifwynne
Responses from bifwynne
| Tube Amps and Friendly Speakers - Back Impedance @bassdukeILI echo what Ralph just posted. But let me elaborate just a bit. I also own an ARC Ref 150 SE amp. ARC says that it take 600 hours for the amp to break it in. That may be a bit much. In any case, what ARC said is correct, use what ev... | |
| Solid states more accurate than tubes? The OP is slapping paint with a 12 inch wide brush. Yes, ... most tube amps have higher output impedances that SS amps. My amp, an ARC Ref 150 SE, has an output impedance of roughly .76 ohms off the 8 ohm taps. By contrast, most SS amps have o... | |
| Damping Factor - Interesting article General observation: much of the discussion above focuses on high DFs of 20, 200 or 2000. I surmise that most amps that fall into those DF categories are solid state amps that are constant (or near constant) voltage sources. I was hoping Atmosp... | |
| Damping Factor - Interesting article kijanki ,... I am generally aware of the relationship between an amplifier's output impedance and a speaker's input impedance, the latter stat which varies as a function of frequency response. What I found surprising is that Benchmark writes tha... | |
| 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... |