In this review, we will be comparing Dynamo 12 and KC92, two Powered Subwoofer speakers from MartinLogan and KEF. Being Powered subwoofers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them. Let's have a brief look at the main features of MartinLogan Dynamo 12 and KEF KC92 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the MartinLogan Dynamo 12 and KEF KC92 compare and hopefully end up with enough arguments to decide which one of these subwoofers is the better choice for you.
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.MartinLogan Dynamo 12 and KEF KC92 have a totally different setup: the MartinLogan Dynamo 12 features 1 x 12-inch drivers whereas the KC92 features 2 x 9-inch drivers.
Frequency Response
Dynamo 12 has a frequency range of 22-200 Hz whereas KC92 has a frequency range of 11-200 Hz. With a minimum frequency of 11Hz, the KC92 can go significantly deeper on the low side and provide stronger bass compared to the Dynamo 12's min frequency of 22Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Subwoofer class in our database.
Low Frequency
Subwoofer Speakers
High Frequency
Subwoofer Speakers
Physical Specs
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare MartinLogan Dynamo 12's and KEF KC92's external dimensions. MartinLogan Dynamo 12 has external dimensions of ( ) whereas KEF KC92 has external dimensions of 352.5 x 330 x 360.5 mm ( 13.88 x 13.00 x 14.19 in) .
KEF KC92 is clearly the larger of the two speakers. Its body is 330mm wider, 352mm taller and 361mm deeper than MartinLogan Dynamo 12.