In this review, we will be comparing Theatrus T8C 8" In-Ceiling Speaker and Theatrus T63S Single 6.5" Slim On-Wall Speaker, two Passive In-wall speakers by Aperion.
Let's have a brief look at the main features
of Aperion Theatrus T8C 8" In-Ceiling Speaker and Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker first before getting into our more
detailed comparison.
| Key Specs | Aperion Theatrus T8C 8" In-Ceiling Speaker | Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker |
|---|
| Brand | Aperion
United States · founded 1998 | Aperion
United States · founded 1998 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | — | 2" |
|---|
| Woofer | 8" | 6.5" |
|---|
| Frequency response | 36-35k Hz | 70-35k Hz |
|---|
| Sensitivity | 92 dB | 91 dB |
|---|
| Impedance | 4 ohms | 4 ohms |
|---|
| Power range | 20-150 Watts watts | 20-150 Watts watts |
|---|
| Weight | 4.08kg / 9lbs | 7.80kg / 17.2lbs |
|---|
| Dimensions (H x W x D) | 11-5/16" x 11-5/16" x 5-1/16"
288.0 x 288.0 x 129.0mm | 18.1" x 8.7" x 4.3"
459.7 x 221.0 x 109.2mm |
|---|
What size room are the Aperion Theatrus T8C 8" In-Ceiling Speaker and Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision
factor. Here we have compared their suitability to various sizes of environments considering their size
and max power parameters:
| Listening Environment* |
Aperion Theatrus T8C 8" In-Ceiling Speaker |
Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker |
| Near-field |
Good |
Good |
| Small Room |
Good |
Good |
| Mid-size Room |
Average |
Average |
| Large Room |
Poor |
Poor |
| Very Large Room |
No way |
No way |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2,
Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: >
400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual
listening experience changes depending on floor height, room shape, surface materials, listening
position, speaker locations, etc.)
The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.
Drivers
Both Theatrus T8C 8" In-Ceiling Speaker and Theatrus T63S Single 6.5" Slim On-Wall Speaker are 2-way speakers.
Aperion Theatrus T8C 8" In-Ceiling SpeakerAperion Theatrus T63S Single 6.5" Slim On-Wall Speaker
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 T8C 8" In-Ceiling Speaker |
Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
-inch
|
2-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 8-inch
|
1 x 6.5-inch
|
Theatrus T8C 8" In-Ceiling Speaker features a " Tweeter and 1 x 8" Woofer. On the other hand, the Theatrus T63S Single 6.5" Slim On-Wall Speaker features a 2" Tweeter and 1 x 6.5" Woofer.
Frequency Response
Theatrus T8C 8" In-Ceiling Speaker has a frequency range of 36-35k Hz whereas Theatrus T63S Single 6.5" Slim On-Wall Speaker has a frequency range of 70-35k Hz. With a minimum frequency of 36Hz, the Theatrus T8C 8" In-Ceiling Speaker can go significantly deeper on the low side and provide stronger bass compared to the Theatrus T63S Single 6.5" Slim On-Wall Speaker's min frequency of 70Hz.
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 T8C 8" In-Ceiling Speaker
Theatrus T63S Single 6.5" Slim On-Wall Speaker
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 T8C 8" In-Ceiling Speaker and Theatrus T63S Single 6.5" Slim On-Wall Speaker have the same Impedance of 4 ohms but where they differ is the sensitivity levels. Theatrus T8C 8" In-Ceiling Speaker sensitivity is rated at 92 dB and the Theatrus T63S Single 6.5" Slim On-Wall Speaker's is at 91 dB. This 1 dB difference makes the Aperion Theatrus T8C 8" In-Ceiling Speaker a more sensitive speaker compared to Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker, 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 T8C 8" In-Ceiling Speaker and the Theatrus T8C 8" In-Ceiling Speaker can provide this impedance level.
Sensitivity
In-wall Speakers
Theatrus T8C 8" In-Ceiling Speaker
Theatrus T63S Single 6.5" Slim On-Wall Speaker
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. Staying
within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.
Theatrus T8C 8" In-Ceiling Speaker and Theatrus T63S Single 6.5" Slim On-Wall Speaker have the same power range of 20-150 Watts watts.
Note that higher power handling does not make a speaker louder: that depends mainly on
sensitivity and impedance. The calculator below shows how loud each of these actually plays
on a real amplifier.
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 T8C 8" In-Ceiling Speaker
Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker
Input Type and Bi-Amping / Bi-Wiring
Theatrus T8C 8" In-Ceiling Speaker features Binding post type posts and Theatrus T63S Single 6.5" Slim On-Wall Speaker has a Binding 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 T8C 8" In-Ceiling Speaker's and Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker's external dimensions. Aperion Theatrus T8C 8" In-Ceiling Speaker has external dimensions of 288.0 x 288.0 x 129.0mm () whereas Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker has external dimensions of 459.7 x 221.0 x 109.2mm (18.1 x 8.7 x 4.3inch).
Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker is 67mm narrower and 19.8mm less deeper than Aperion Theatrus T8C 8" In-Ceiling Speaker but it is also 171.7mm taller.
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 T8C 8" In-Ceiling Speaker needs about 54% more floor or shelf area. Aperion Theatrus T8C 8" In-Ceiling Speaker is 20mm deeper, so it stands that much further out from the wall. Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker is 172mm taller.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The Aperion Theatrus T8C 8" In-Ceiling Speaker weighs 4.08kg / 9lbs and the Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker weighs 7.80kg / 17.2lbs. This makes the Theatrus T63S Single 6.5" Slim On-Wall Speaker 91% heavier than the Theatrus T8C 8" In-Ceiling Speaker.
Here is a comparison of how Theatrus T8C 8" In-Ceiling Speaker and Theatrus T63S Single 6.5" Slim On-Wall Speaker's weights compare with the average, max and min weights in Passive In-wall class.
Weight
All In-wall Speakers
Aperion Theatrus T8C 8" In-Ceiling Speaker
Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker
 Sensitivity |
92 dB
vs
91 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
8 inches
vs
6.5 inches
|
Larger woofer |
|
Low Frequency Response |
36 Hz
vs
70 Hz
|
Generates deeper bass |
 Height |
288mm
vs
459mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
241cm2
vs
371cm2
|
Takes less floor space |
| General |
Aperion Theatrus T8C 8" In-Ceiling Speaker |
Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker |
| Brand |
Aperion |
Aperion |
| Speaker Type |
Passive In-wall Speaker |
Passive In-wall Speaker |
| Power Range |
20-150 Watts watts |
20-150 Watts watts |
| Sensitivity |
92 dB |
91 dB |
| Impedance |
4 ohms |
4 ohms |
| Frequency Response |
36-35k Hz |
70-35k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
6.5" |
| Woofer Composition |
|
|
| Tweeter Size |
- |
2" |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
Physical Specs |
|
|
| Height |
288.0mm (11.3") |
459.7mm (18.1") |
| Width |
288.0mm (11.3") |
221.0mm (8.7") |
| Depth |
129.0mm (5.1") |
109.2mm (4.3") |
| Weight |
4.08kg (9lbs) |
7.80kg (17.2lbs) |
| Enclosure |
Bass Reflex |
Acoustic Suspension |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
|
| Labor Warranty |
|
|
Both are Aperion, from different ranges - so the house sound is shared and the differences are mostly in scale, engineering and price.
| Area | Better | Why |
|---|
| Bass | A | Aperion Theatrus T8C 8" In-Ceiling Speaker digs deeper - 36Hz against 70Hz. |
| Amplifier needs | evenly matched | Similar sensitivity (92dB vs 91dB) - both want much the same power. |
| Headroom | evenly matched | Similar power handling (300W vs 300W). |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Cabinet | depends | Ported vs Sealed. Sealed is tighter and happier near a wall; ported digs lower but wants space behind it. |
| Price | evenly matched | Much the same money ($1,598 vs $1,598 a pair). |
A Aperion Theatrus T8C 8" In-Ceiling Speaker B Aperion Theatrus T63S Single 6.5" Slim On-Wall Speaker
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
Aperion Theatrus T8C 8" In-Ceiling Speaker has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 70Hz anyway, so judge these on the other rows instead.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.