In this review, we will be comparing RP-400M and Bronze 1, two Passive Bookshelf speakers from Klipsch and Monitor Audio.
Let's have a brief look at the main features
of Klipsch RP-400M and Monitor Audio Bronze 1 first before getting into our more
detailed comparison.
| Key Specs | Klipsch RP-400M | Monitor Audio Bronze 1 |
|---|
| Brand | Klipsch
United States · founded 1946 | Monitor Audio
United Kingdom · founded 1972 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Tractrix Horn | 1" Dome |
|---|
| Woofer | 4" Cerametallic | 5.5" C-CAM |
|---|
| Frequency response | 52-25k Hz | 55-30k Hz |
|---|
| Sensitivity | 93 dB | 88 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | up to 50 watts | 20-70 watts |
|---|
| Weight | 4.10kg / 9lbs | 3.50kg / 7.7lbs |
|---|
| Dimensions (H x W x D) | 11.7" x 5.6" x 7.5"
298.0 x 144.0 x 191.0mm | 10.2" x 6.4" x 8.0"
260.0 x 165.0 x 205.0mm |
|---|
What size room are the Klipsch RP-400M and Monitor Audio Bronze 1 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* |
Klipsch RP-400M |
Monitor Audio Bronze 1 |
| 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 RP-400M and Bronze 1 are 2-way speakers.
Klipsch RP-400MMonitor Audio Bronze 1
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Klipsch RP-400M |
Monitor Audio Bronze 1 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4-inch
|
1 x 5.5-inch
|
RP-400M features a 1" Tractrix Horn Tweeter and 1 x 4" Cerametallic Woofer with a Crossover frequency at 1500Hz. On the other hand, the Bronze 1 features a 1" Dome Tweeter and 1 x 5.5" C-CAM Woofer with a Crossover frequency at 2700Hz.
Frequency Response
RP-400M has a frequency range of 52-25k Hz whereas Bronze 1 has a frequency range of 55-30k Hz. With a minimum frequency of 52Hz, the RP-400M can go slightly deeper then the Bronze 1's min frequency of 55Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
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
RP-400M and Bronze 1 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. RP-400M sensitivity is rated at 93 dB and the Bronze 1's is at 88 dB. This 5 dB difference makes the Klipsch RP-400M a more sensitive speaker compared to Monitor Audio Bronze 1, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf Speakers
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.
Bronze 1 can handle a max power of 70 watts RMS, whereas RP-400M has a max power handling value of 50 watts RMS, 20 watts less than the Bronze 1.
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.
Input Type and Bi-Amping / Bi-Wiring
RP-400M features Post type posts and Bronze 1 has a Post type posts. None of these speakers feature bi-amping/bi-wiring.
Klipsch RP-400M's Single binding posts terminals
Monitor Audio Bronze 1's Post terminals
Cabinet Type and Port Position
Both RP-400M and Bronze 1 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
Klipsch RP-400M Tractrix horn-shaped Port
Monitor Audio Bronze 1 Port
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 Klipsch RP-400M's and Monitor Audio Bronze 1's external dimensions. Klipsch RP-400M has external dimensions of 298.0 x 144.0 x 191.0mm (11.7 x 5.6 x 7.5inch) whereas Monitor Audio Bronze 1 has external dimensions of 260.0 x 165.0 x 205.0mm (10.2 x 6.4 x 8.0inch).
Klipsch RP-400M is 21mm narrower and 14mm less deeper than Monitor Audio Bronze 1 but it is also 38mm taller.
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the Klipsch RP-400M is approximately 275.0cm2 / 42.6inch2 and base area of the Monitor Audio Bronze 1 is approximately 338.3cm2 / 52.4inch2. The RP-400M requires 19% less surface area than the Bronze 1 which gives it a small advantage on placement in tight spaces.
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 Klipsch RP-400M weighs 4.10kg / 9lbs and the Monitor Audio Bronze 1 weighs 3.50kg / 7.7lbs. This makes the RP-400M 17% heavier than the Bronze 1.
Here is a comparison of how RP-400M and Bronze 1's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Klipsch RP-400M?
Here are the items that are included inside the box of RP-400M:
- 2 Bookshelf loudspeakers
- 2 Grilles (installed)
- 8 Self-adhesive rubber feet
- User Manual
- Important Safety Instructions
- Warranty Information
What's in the Box of Monitor Audio Bronze 1?
Here are the items that come with the Bronze 1:
- 2 Bookshelf loudspeakers
- 2 Grilles
- 2 Foam port plugs
- Hex-key
- Owner's Manual
- Important Safety Instructions
 Sensitivity |
93 dB
vs
88 dB
|
Play louder with same amount of amplification power |
 Low Frequency Response |
52 Hz
vs
55 Hz
|
Generates deeper bass |
 Mounting Bracket |
Yes
vs
No
|
Allows mounting on walls |
 Base Surface Area |
275cm2
vs
338cm2
|
Takes less floor space |
 Max Input Power |
70 watts
vs
50 watts
|
Handle more power from your amplifier |
|
Woofer Size |
5.5 inches
vs
4 inches
|
Larger woofer |
 High Frequency Response |
30k Hz
vs
25k Hz
|
Generates higher frequency |
 Height |
260mm
vs
298mm
|
Easier to fit in smaller spaces |
 Price per pair* |
299USD
vs
399USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Klipsch Reference Premiere RP-400M |
Monitor Audio Bronze 1 |
| Brand |
Klipsch |
Monitor Audio |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
up to 50 watts |
20-70 watts |
| Sensitivity |
93 dB |
88 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
52-25k Hz |
55-30k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
4" |
5.5" |
| Woofer Composition |
Cerametallic |
C-CAM |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Tractrix Horn |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
1500Hz |
2700Hz |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
298.0mm (11.7") |
260.0mm (10.2") |
| Width |
144.0mm (5.7") |
165.0mm (6.5") |
| Depth |
191.0mm (7.5") |
205.0mm (8.1") |
| Weight |
4.10kg (9lbs) |
3.50kg (7.7lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain vinyl |
MDF/Wood-grain vinyl |
| Available Colors |
Ebony, Walnut, Piano Black |
Walnut, White, Rosemah, Black |
| Mounting Bracket |
Keyhole |
No |
| Recommended Stand Height |
28-30" |
30-31" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | A | Klipsch RP-400M digs deeper - 52Hz against 55Hz. A subwoofer would even that out. |
| Amplifier needs | A | Klipsch RP-400M is more sensitive (93dB vs 88dB), so it goes louder on the same amplifier. |
| Headroom | B | Monitor Audio Bronze 1 takes more power (70W vs 50W) - more in hand in a big room. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | depends | Neither adds bi-amping, a sub output or height drivers. Klipsch RP-400M sits in a wider range (17 models), so a matched surround system is easier later. |
| Price | B | Monitor Audio Bronze 1 is cheaper - $299 against $399, about 25% less. |
A Klipsch RP-400M B Monitor Audio Bronze 1
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?
Klipsch RP-400M is ahead, but only on 1 of the measured areas, and it costs about 33% more. That is a lot of money for a narrow margin on paper - Monitor Audio Bronze 1 looks like the sensible buy unless something else about the Klipsch RP-400M appeals to you. If your amplifier is modest, vintage or valve-based, Klipsch RP-400M is the safer partner - the other will want more current or more watts to sound its best. Think about the whole system, not just the speakers: the roughly $100 saved by taking the cheaper pair would buy a subwoofer or a better amplifier, and either usually does more for the sound than the difference between these two.
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.