jakegt3
Responses from jakegt3
| Tube amp down, need guidance from the experienced 5,000 to 6,000 hours on the KT88's is a *lot* of hours. My amp (ARC VS-115) has 6550's and ARC advises that 2,000 hours is the "expected" life of these power tubes. | |
| Tube amp down, need guidance from the experienced For a test, you don't need to buy more KT88's. Swap one of the good tubes that's in there now into the bad position. Turn the amp on and see if the good tube comes on. If not, then there is something inside the amp that needs fixing. I would the g... | |
| Audio Research Vs115 Bifwynne - I should mention that a network analyzer (sometimes called a "vector network analyzer, or VNA) can also be used to measure the frequency response of an amp into any load. The same instrument will measure the output impedance of the amp ... | |
| Sonus faber Cremona M with Prima Luna DiaLogue One I have the Cremona M and drive them with the ARC VS115 (120W/channel). Both excel in midrange reproduction, so I find them to be an excellent combination. My listening room is medium sized (13x24), but I generally don't listen any louder than abou... | |
| Audio Research Vs115 Bifwynne - The CS2.4 has a somewhat smoother impedance plot than the CS2.3. Here are the measurements done on the CS2.3 in a Stereophile review: http://www.stereophile.com/content/thiel-cs23-loudspeaker-measurements. You can see the impedance dips... | |
| Audio Research Vs115 Bifwynne - I have a Radio Shack SPL meter but it's not really accurate enough to make good near field measurements. The 4 ohm tap does have lower output impedance than the 8 ohm tap. However, if you are driving an 8 ohm load you'll get more power ... | |
| mixing tube brands When you say "signal" tubes, I assume you mean those that handle low level signals, like driver tubes. In that case I see no reason you can't use a different brand than for power tubes. The one case where you want to stick to one brand is within a... | |
| Audio Research Vs115 Bifwynne - The speakers under test were Thiel CS2.3 driven from the 4 ohm tap. The CS2.3 are a notoriously difficult load for amplifiers, with large swings in impedance over frequency and a minimum impedance of 2 ohms. However, the Thiels and the ... | |
| Audio Research Vs115 My VS115 is one of the earlier ones with the 6550's. At some point I will upgrade the tubes to KT120's. I've also blown one of the resistors in the amp. I ended up replacing the resistor myself--it's a 10 minute job if you know how to solder. Appa... | |
| Anyone hear the new Thiel 2.7 speakers at RMAF? I just auditioned the CS2.7's, driven by VTL electronics, and quite frankly came away rather disappointed. They do sound quite neutral and on some recordings sound very good indeed. But on complex musical passages the sound became "congested" and ... |