In this review, we will be comparing Theatrus T65S Dual 6.5" Slim On-Wall Speaker and Vertex Series III IW VJ63 W, two Passive In-wall speakers from Aperion and ELAC.
Let's have a brief look at the main features
of Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker and ELAC Vertex Series III IW VJ63 W first before getting into our more
detailed comparison.
| Key Specs | Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker | ELAC Vertex Series III IW VJ63 W |
|---|
| Brand | Aperion
United States · founded 1998 | ELAC
Germany · founded 1926 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 2" | — |
|---|
| Woofer | 2 x 6.5" | 6" |
|---|
| Frequency response | 65-35k Hz | 45-40k Hz |
|---|
| Sensitivity | 94 dB | 88 dB |
|---|
| Impedance | 4 ohms | 4 ohms |
|---|
| Power range | 20-250 Watts watts | — |
|---|
| Weight | 12.02kg / 26.4lbs | — |
|---|
| Dimensions (H x W x D) | 17" x 14.2" x 4.3"
431.8 x 360.7 x 109.2mm | 12-11/16" x 8-1/2" x 4-1/16"
322.3 x 215.9 x 102.5mm |
|---|
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
Drivers
Both Theatrus T65S Dual 6.5" Slim On-Wall Speaker and Vertex Series III IW VJ63 W are 2-way speakers.
Aperion Theatrus T65S Dual 6.5" Slim On-Wall SpeakerELAC Vertex Series III IW VJ63 W
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker |
ELAC Vertex Series III IW VJ63 W |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
2-inch
|
-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 6.5-inch
|
1 x 6-inch
|
Theatrus T65S Dual 6.5" Slim On-Wall Speaker features a 2" Tweeter and 2 x 6.5" Woofer. On the other hand, the Vertex Series III IW VJ63 W features a " Tweeter and 1 x 6" Woofer.
Frequency Response
Theatrus T65S Dual 6.5" Slim On-Wall Speaker has a frequency range of 65-35k Hz whereas Vertex Series III IW VJ63 W has a frequency range of 45-40k Hz. With a minimum frequency of 45Hz, the Vertex Series III IW VJ63 W can go significantly deeper on the low side and provide stronger bass compared to the Theatrus T65S Dual 6.5" Slim On-Wall Speaker's min frequency of 65Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the In-wall class in our database.
Low Frequency
In-wall Speakers
Theatrus T65S Dual 6.5" Slim On-Wall Speaker
Vertex Series III IW VJ63 W
Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
Theatrus T65S Dual 6.5" Slim On-Wall Speaker and Vertex Series III IW VJ63 W have the same Impedance of 4 ohms but where they differ is the sensitivity levels. Theatrus T65S Dual 6.5" Slim On-Wall Speaker sensitivity is rated at 94 dB and the Vertex Series III IW VJ63 W's is at 88 dB. This 6 dB difference makes the Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker a more sensitive speaker compared to ELAC Vertex Series III IW VJ63 W, hence will play louder with the same amount of watts.
One thing to keep in mind that the lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit comared to higher impedance speakers especially at high volume levels, so make sure the amp you pair with the Theatrus T65S Dual 6.5" Slim On-Wall Speaker and the Theatrus T65S Dual 6.5" Slim On-Wall Speaker can provide this impedance level.
Sensitivity
In-wall Speakers
Theatrus T65S Dual 6.5" Slim On-Wall Speaker
Vertex Series III IW VJ63 W
Which plays louder on your amplifier?
Starting with a popular amplifier - change it to the one you own, or any you are
considering, and watch both numbers move.
Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker
ELAC Vertex Series III IW VJ63 W
Input Type and Bi-Amping / Bi-Wiring
Theatrus T65S Dual 6.5" Slim On-Wall Speaker features Spring post type posts and Vertex Series III IW VJ63 W has a Spring post type posts. None of these speakers feature bi-amping/bi-wiring.
Physical Specs
The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker's and ELAC Vertex Series III IW VJ63 W's external dimensions. Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker has external dimensions of 431.8 x 360.7 x 109.2mm (17 x 14.2 x 4.3inch) whereas ELAC Vertex Series III IW VJ63 W has external dimensions of 322.3 x 215.9 x 102.5mm ().
Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker is clearly the larger of the two speakers. Its body is 144.8mm wider, 109.5mm taller and 6.7mm deeper than ELAC Vertex Series III IW VJ63 W.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker needs about 78% more floor or shelf area. Aperion Theatrus T65S Dual 6.5" Slim On-Wall Speaker is 110mm taller.