I got Arcam A19 and Epos epic 1 speakers. I now looking at changing speakers, as would like bit more detail.
Cheaper the better.
Thanks Paul Selwood
Cheaper the better.
Thanks Paul Selwood
Ketan Bharadia said:We've got good results with the Arcam A19 driving B&W's 685s.
Ketan Bharadia said:We've got good results with the Arcam A19 driving B&W's 685s.
paulselwood said:The power stage is a class AB design optimised for low noise and distortion with a very wide bandwidth. This means the A19 more than meets the potential demands of today’s 24/96 and 24/192 digital audio sources. The amplifier’s power output characteristics (2x 50w into an 8 ohm load or 2x 90w into a 4 ohm load).
paulselwood said:I did a search Arcam A19 4 Ohms
BigH said:paulselwood said:I did a search Arcam A19 4 Ohms
Looks like manufacturers claimed figures.
Stereophile's measurements: the A19 clips at 61W into 8 ohms (17.7dBW) and 85Wpc into 4 ohms (16.3dBW)—slightly more and slightly less, respectively, than the specified maximum powers of 50Wpc into 8 ohms (17dBW) and 90Wpc into 4 ohms (16.5dBW).
I looked at stereophile's review and found this "I didn't test the A19's power delivery into 2 ohms, as it had difficulty with low impedances. For example, I had some problems when I tried to measure how the percentage of THD+N changes with frequency. Usually, I choose a level where I can be sure I am seeing actual distortion rather than noise when I look at the THD+N vs power graphs. I first tried plotting the THD+N at 9V, which is equivalent to 10W into 8 ohms or 20W into 4 ohms. However, as you can see in fig.9, the THD+N into 4 ohms (cyan and magenta traces) rises dramatically below 125Hz. This is because, with continuous drive into 4 ohms at this level, the A19's protection circuit cuts in at frequencies below the midrange. Investigating this, it appears that the amplifier will protect itself when asked to deliver a low-frequency signal at more than 15W into 4 ohms for more than 5 seconds or so. I therefore repeated this test at a level of 2.83V, equivalent to 1W into 8 ohms or 2W into 4 ohms. Now all appears well (fig.10), with the small rise in THD at the top of the audioband due to the circuit's reduced open-loop bandwidth in this region."
paulselwood said:Thanks for the info. Very good reading. The speakers which I will be getting are the dynaudio D&M 2/6, which are rated at 6 ohms I think. So if I was to change my amp, too all one system, it should be ok.
