Want to ask, is there anybody here using NAP-140 to drive ATC loudspeakers ?
I see that ATC is difficult to drive with low wattage amplifier, but I often see that Naim is best pair also with ATC.
I see that ATC SCM-7 version 2 have only 84 dB sensitivity which means want big power amplifier to drive it.
ATC SCM-7 version 3 is a little bit higher in sensitivity that has 85 dB sensitivity
my quaestion is :
is there anybody here using Naim NAC-140 to drive ATC speaker and what degree of volume knob usually positioned ?
How far away do you plan to listen to the speakers? 85db for 1 watt is at 1 meter. Rule of thumb, every time you double the distance, you hear a quarter of the sound level. Another rule of thumb would be that the level decreases by 6dB every time you double the distance.
Do a google search for “Understanding speaker sensitivity” and you will probably find an article that explains most of it and also offer a calculator to plug in your own relevant values for amplifier, distance, and speaker. Combine this with looking for examples of db values you find for example that “Over 85 dB for extended periods can cause permanent hearing loss.”! The ATC SCM-7 are rated for maximum 103 db.
This is not all there is about how amplifiers drive speakers, and I’m certainly no expert, but it should give you a start to get to grips with what the speakers in question can do with your amplifier. I’m sure other forum members can fill in further details, or even have the experience of the exact combination of speakers and amplifier you would like to have.
I have heard the SCM7s driven by a NAIT XS3 and fronted by an NDX2 at my dealer. Not quite the same thing as a NAP140, especially since the context of your enquiry is unknown. But nonetheless, they sounded very good to me.
My habit of listening to average musk is loudest at the volume at 8 o’clock, does the SCM7 with a sensitivity of 84/85 dB and using the NAP-140 require even greater volume playback for example at 9 o’clock or so? I tested the NAP-140 using the Bowers and Wilkins BM 601S3 and DM805, at 8 o’clock is enough for me, will driving the SCM-7 take more effort than the NAP-140?
My friends have the HTS on the wall version of the SCM 7 powered by a Unitilite and the system sounds great to me . It never feels underpowered or stretched in any way . Just a nice , neat and fun system.