ATC scm7s & 11s on-wall monitors

ATC & other makes of Home Cinema equipment
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Re: ATC scm7s & 11s on-wall monitors

Postby Alexk » Sat Aug 03, 2013 2:40 pm

The SCM7 on-wall monitors use a slightly different midbass driver to the SCM7.

The normal SCM7 is designed to be 'free-standing', or 'whole space radiating', and it's low-frequency performance is best when used like this - without boundary reinforcements.

The 'on-wall' SCM7 has more windings in it's voice coil and a slightly different x-over design (less HF padding) in order to change the low-frequency balance. As the wall immediately behind the speaker will offer around 5-6dB of LF boost (because of the boundary effect), the on-wall SCM7 is more efficient than the standard SCM7 model, but is 'bass-light' in order to compensate for the LF boost from the wall, resulting in a flat frequency response.

Or so I've been told...

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Re: ATC scm7s & 11s on-wall monitors

Postby MattSPL » Sat Aug 03, 2013 9:31 pm

Alexk wrote:The SCM7 on-wall monitors use a slightly different midbass driver to the SCM7.

The normal SCM7 is designed to be 'free-standing', or 'whole space radiating', and it's low-frequency performance is best when used like this - without boundary reinforcements.

The 'on-wall' SCM7 has more windings in it's voice coil and a slightly different x-over design (less HF padding) in order to change the low-frequency balance. As the wall immediately behind the speaker will offer around 5-6dB of LF boost (because of the boundary effect), the on-wall SCM7 is more efficient than the standard SCM7 model, but is 'bass-light' in order to compensate for the LF boost from the wall, resulting in a flat frequency response.

Or so I've been told...


That's interesting info, thanks for sharing :D
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