![]() A 1/2 dB increase/decrease in amp gain will completely alter the outcome of such A/B comparisons. These demos completely mislead the listener when using a switcher - switching instantly from one speaker to the other will favor whichever one has greater efficiency (over Fletcher Munson effects). Ignore such comparisons unless its matched levels precisely. I see this all the time here, where people extoll how much better one is vs another and efficiency is not even considered. So given that people just hook a pair of speakers and then hook up another pair right after, or hook up two pairs to an amp with a speaker selector switch, whichever pair of speaker is more efficient will win the demo because its louder and sounds "better" (more bass/more treble). Given the fundamental truth that all our demos everywhere are heavily affected by Fletcher Munson effects, this means even a small difference in level will be perceived as more bass or less bass in the speaker when it's no such thing- its our perception of bass causing this effect. This myth is in direct opposition to what the entire professional community already know about ATC: its sounds the same at every level, unlike many others, with the caveat of Fletcher Munson effects. I'm convinced this "don't sound good at low level" is a some myth started by someone who doesn't understand what they are doing. In a room setting with due separation, I am afraid 7’s will probably not perform to your satisfaction. So you will need to place them further away to acquire better soundstage. The soundstage of Scm is modest, not particularly wide as compared to other speakers with dispersion tweeter driver. With even small size room setting, I will consider upgrading to at least Scm 11 ($900 more). The other coveat is, as Tarun points out, Scm 7 is ideal for near-field, desktop settitng. Linton has tighter bass so I match it with NC 2125, and Sb3 is with A23. The effect on my main speakers, Wharfedale Linton Heritage, is similar. From the same speakers (NHT Sb3), the bass with A23 is tighter, cleaner but less weighty than the bass with NC 2125 in an absolute term. ![]() Both are class A/B rated 125 wpc into 8 Ohm. I own Parasound NC 2125 (DF = 150 at 20Hz) and A23 (DF over 800). To give you an example that I do have actual experience with. I like tight bass but not overly tight because it will sound lean. response is 60Hz-22kHz at +-6dB already and you could probably imagine how will the bass notes be perceived under well-controlled amplification. The SCM12 Pro has a perfect partner in the ATC P1 Power Amplifier.Since you have mentioned the high damping factor (DF) of your amp and the uncertainty on the 7’s bass performance, the combination of two might produce bass notes on the leaner side and sometimes might affect the midrange too. Sharing technology with the renowned ATC Soft Dome midrange unit the new tweeter employs a unique dual suspension system suppressing diaphragm rocking modes and eliminating the need for ferrofluid. This passive professional near field monitor also incorporates ATC?s SH25-76 tweeter. These features have been incorporated into the SB45-150CLD bass/mid driver and integrated into the new SCM12 Pro. The enhanced damping performance of this technology brings significant improvements to bass/mid drive units by reducing harmonic distortion in the critical midrange, improving magnitude linearity (frequency response) and also dispersion (behaving like a smaller drive unit off axis). Constrained Layer Damping (CLD) is a drive unit diaphragm technology from ATC that represents another advance in performance and one that transfers directly to system performance and the reproduction of music. Massive magnet motor assemblies offer no-compromise optimisation for each voice coil diameter. Front and rear venting not only reduces air flow noise but also increases power handling capacity and, therefore, long term reliability. Hand-wound voice coils use only high density edge wound flat OFHC ribbon copper wire and operate in precision magnetic gaps. Manufactured in-house to exacting tolerances ATC?s drive units are legendary for their many design innovations. Compact high-performance 2-way passive studio monitor with 6" mid/low frequency driver suited for critical near-field listening
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