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In Reply to: RE: Is it possible to get Bass control with Tubes and A7 Speakers? posted by Monte Verdi on October 13, 2009 at 14:14:03
Can you define or identify "bass control" more precisely?
I can see four technical issues that may be involved:
1) Power. The Accuphase can deliver 50-100 watts, which if you needed it would severely limit your choice of tube amps.
2) Damping factor. The Accuphase offers a choice of 1, 5, or 50. Which one works in your setup? Or does it make any difference? This will give a lot of guidance in choice of tube amp.
3) Equalization. The A-7 is neither flat nor uniform in directivity in the bass, though the quality of the bass is widely admired. The Accuphase offers four different controls that adjust the bass response. Do you use or need any of them? If so, that will affect your choice of tube amp or preamp.
4) Power bandwidth. Tube amps have output transformers which limit how low a frequency can be delivered at full power. While most amps will adequately drive most speakers with most music, most of the time, it may be that for your music and your speakers you would need a tube amp with a greater inductance than the average. These are available, but you might need to be selective.
Not knowing which of those criteria (or others I haven't thought of) are important, it's hard to respond usefully.
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