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  1. Home
  2. Klipsch Speakers
  3. Passive Center Channel Speakers
  4. Klipsch Reference Premiere RP-404C II
Klipsch RP-404C II Review
Klipsch RP-404C II - Front View

Compare To

Main Features

  • 1" Tractrix Horn Tweeter
  • 4 x 4" Cerametallic cone Woofer
  • 87-25k Hz Frequency Response
  • 94 dB Sensitivity
  • Impedance: 8ohms
  • Power Range: up to 125 watts
  • Weight: 20.30 lbs / 9.20 kg
  • Dimensions(HxWxD): 5-3/4"x26-7/8"x6-1/2" / 147.0 x 683.0 x 166.0mm
MSRP: $599 (list price)
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Klipsch RP-404C II Review
Klipsch RP-404C II Klipsch RP-404C II
Check price atAmazon›

Made by Klipsch · United States · since 1946 · sold through dealers

Klipsch Reference Premiere RP-404C II is a 2-way Passive Acoustic Suspension Center Channel speaker by Klipsch. It was released in 2022. Center channel speaker is an important component of a home theater system set-up as it delivers the listener significant part of the on-screen dialogue from your television. It features a 1" Tractrix Horn Tweeter and 4 x 4" Cerametallic cone Woofer. The speaker has a frequency range of 87-25k Hz and a sensitivity of 94 dB. Klipsch RP-404C II has an MSRP of 599$.

Room Size Suitability

The size of the room where you plan to use the Klipsch RP-404C II is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:

Listening Environment* Suitability
Near-fieldPoor
Small RoomAverage
Mid-size RoomGood
Large RoomAverage
Very Large RoomPoor

(* 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.)

Klipsch replaced the older RP-404C with this model. Follow the link to read our detailed comparison of these models:
Compare Klipsch RP-404C II vs Klipsch RP-404C
Klipsch RP-404C II  Lifestyle
Klipsch RP-404C II Lifestyle

Klipsch's Reference Premiere (RP) II Series of Loudspeakers

RP-404C II is a member of Klipsch's Reference Premiere (RP) II series of Passive speakers. Reference Premiere II is the latest generation of Klipsch's RP line, with redesigned horns and drivers. Below you can see the main specs of these speakers.

See all 10 Klipsch Reference Premiere (RP) II models compared »

Klipsch Reference Premiere (RP) II Series Speakers
Model Frequency SensitivityImpedance Woofer
Klipsch RP-8000F II
Compare
32-25k Hz 98 dB8Ω 2 x 8"
Klipsch RP-600M II
Compare
44-25k Hz 94.5 dB8Ω 1 x 6.5"
Klipsch RP-504C II
Compare
50-25k Hz 96 dB8Ω 4 x 5.25"
Klipsch RP-500M II
Compare
50-25k Hz 92 dB8Ω 1 x 5.25"
Klipsch RP-6000F II
Compare
38-25k Hz 96 dB8Ω 2 x 6.5"
Klipsch RP-8060FA II
Compare
35-25k Hz 98 dB8Ω 2 x 8"
Klipsch RP-404C II
87-25k Hz 94 dB8Ω 4 x 4"
Klipsch RP-5000F II
Compare
35-25k Hz 95 dB8Ω 2 x 5.25"
Klipsch RP-500C II
Compare
60-25k Hz 96 dB8Ω 2 x 5.25"
Klipsch Reference Premiere RP 500SA II
Compare
58-25k Hz 93 dB8Ω 1 x 5.25"
Klipsch Reference Premiere (RP) II Series Speakers
Klipsch Reference Premiere (RP) II Series Speakers

Frequency Response of the Klipsch RP-404C II Speaker

Klipsch RP-404C II has a Frequency response range of 87-25k Hz and Power Range of up to 125 watts.

Here we have a comparison of how RP-404C II's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Center Channel Speakers
Klipsch RP-404C II
Min
Average
Median

Klipsch RP-404C II Tweeter
Klipsch RP-404C II's titanium Tractrix Horn Tweeter

Crossover frequency of the Klipsch RP-404C II?

The crossover frequency of the RP-404C II is set to 1900 Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.

Klipsch RP-404C II driver frequency bands87-1.9kWoofer 4"1.9k-25kTweeter 1"20501002005001k2k5k10k20k40kHz, log scale

Impedance and Sensitivity

Klipsch RP-404C II's nominal impedance level is 8 ohms and has a sensitivity of 94 dB.

Sensitivity
Center Channel Speakers
Klipsch RP-404C II
Min
Average
Median

8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Klipsch Reference Premiere RP-404C II is not considered a difficult to drive speaker from nominal Impedance perspective.

Sensitivity

94dB of the Klipsch Reference Premiere RP-404C II is considered a high sensitivity compared to average stereo speaker which makes RP-404C II an easy to drive from Sensitivity perspective. If you are planning to power your speaker with a Tube amp which are generally very low power, the Klipsch RP-404C II will be a good choice. Work out how loud the Klipsch RP-404C II plays in your room →

What amplifier does the Klipsch RP-404C II need?

At normal listening levels in a medium room, about 3.0–60 W per channel into 8 ohms. Set your own conditions and we will rank every amplifier we cover.

We check power, impedance safety and current delivery - not just watts.

Prefer to browse? Integrated amplifiers under $750, or every amplifier we cover.

Input Type

RP-404C II features Binding post type connectors. Bi-amping and Bi-wiring are not possible.

Work out what gauge speaker cable this run needs →

Klipsch RP-404C II Back View
Klipsch RP-404C II Back View

Klipsch RP-404C II External Dimensions and Weight

Klipsch RP-404C II has external dimensions of (Height x Width x Depth) 5-3/4 x 26-7/8 x 6-1/2inch (147.0 x 683.0 x 166.0mm ).

Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base area of Klipsch RP-404C II is approximately 1133.8cm2 / 175.7inch2.

To get a better perspective on the real life size of Klipsch RP-404C II, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).

Klipsch RP-404C II Real Life Body Size Comparison
Klipsch RP-404C II Speaker Size Compared to a Compact Disc

Find speakers that fit your shelf or alcove →

Weight

The Klipsch RP-404C II weighs 9.20kg / 20.2lbs per piece. Here is a comparison of how RP-404C II's weight compares with the average, max and min weights in its class.

Weight
All Center Channel Speakers
Klipsch RP-404C II
Min
Average
Median
Weight
Center Channel Speakers under $750
Klipsch RP-404C II
Min
Average
Max

How does the Klipsch RP-404C II compare to the Klipsch Reference Premiere RP-504C II?

One of the natural alternative to the Klipsch RP-404C II is the RP-504C II which is located one step higher in Klipsch's Passive Center Channel selection.

Here is a scaled size comparison of these two speakers to give you an idea how their external dimensions compare:

Klipsch RP-404C II vs Klipsch RP-504C II Size Comparison - Front View
Comparison image of Klipsch RP-404C II and Klipsch RP-504C II Size and External Dimensions

Check the Detailed Comparison of Klipsch RP-404C II vs RP-504C II for more details.

Cabinet type and Materials

Klipsch RP-404C II has a Acoustic Suspension type cabinet and a MDF/Wood-grain vinyl finish. Acoustic Suspension loudspeakers aka Sealed speakers have no openings such as ports or slots.. They can be designed smaller, the bass is more accurate and tighter compared to ported designs but doesn't go as low on the lower end in general.

Klipsch RP-404C II  - Side View
Klipsch RP-404C II - Side View

Speaker Feet

Klipsch RP-404C II comes with Cork pads which you can use to secure your loudspeaker on the surface that you are putting on.

It is always recommended to use some kind of feet under all types of speakers. Besides limiting the movement of the speakers, it also compensates for non-flat surfaces and limits the contact surface area of the speaker. Rubber based feet also help isolating the vibrations within certain frequency ranges.

Available colors

Klipsch RP-404C II is available in Walnut and Black.

Does the Klipsch RP-404C II come with a Grille?

RP-404C II comes with magnetic grilles in black color choices. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible. Since the included grille of the RP-404C II is magnetic type, it is very easy to put it on and off.

Klipsch RP-404C II  with Grille
Klipsch RP-404C II with Grille

What's in the Box of Klipsch RP-404C II?

Here are the items that are included inside the box of RP-404C II:
  • Center channel loudspeaker
  • Grille
  • User Manual
  • Important Safety Instructions
  • Warranty Information

Recommended Accessories

Here is a list of accessories that we think you may need for the Klipsch Reference Premiere RP-404C II.

  • Speaker Cable and Connectors
    • Speaker Cables with Banana Plugs: If you know the lenght of the cable you need, this is the easier option to connect your speakers with your amp.
    • Speaker Cables without Connectors: If you are not sure about the lenght or need longer than standard cables with plugs, choose this option.
    • Banana Connectors and Plugs: If you chose the cables without connectors option or already have some cable around, pick the banana plugs separately.
  • Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
  • Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.

User's Manual

For more information about how to setup, use and maintain the Klipsch Reference Premiere RP-404C II, use the direct link below to download the official manual document:
Download User Manual for Klipsch RP-404C II

Official Product Page

Official manufacturer's product page for the Klipsch Reference Premiere RP-404C II speaker can be found below:
Official Product Page for Klipsch RP-404C II

Warranty

5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.

Klipsch Reference Premiere RP-404C II Alternatives in Passive Center Channel Speakers
Model Type Sensitivity Impedance Frequency
Klipsch RP-504C II
Compare
2-way 96 dB 8 ohms 50-25k Hz
Klipsch RP-404C
Compare
2-way 97 dB 8 ohms 59-25k Hz
Klipsch RP-500C II
Compare
2-way 96 dB 8 ohms 60-25k Hz
Klipsch R-30C
Compare
2-way 96 dB 8 ohms 78-21k Hz
Klipsch R-34C
Compare
2-way 96 dB 8 ohms 82-21k Hz
Polk ES35
Compare
2-way 89 dB 8 ohms 66-40k Hz
Klipsch R-52C
Compare
2-way 95 dB 8 ohms 89-21k Hz
Klipsch R-50C
Compare
2-way 96 dB 8 ohms 90-21k Hz
Frequently Asked Questions about Klipsch Reference Premiere RP-404C II

What amplifier do you need for the Klipsch RP-404C II?

Klipsch rates the Klipsch RP-404C II for up to 125 watts of amplifier power. It is an 8-ohm speaker, the usual nominal load, so almost any amplifier or receiver can drive it.

Is the Klipsch RP-404C II easy to drive?

The Klipsch RP-404C II has a sensitivity of 94 dB. That is high: it goes loud on modest power, so it suits low-powered amplifiers, including valve/tube designs.

Does the Klipsch RP-404C II need a subwoofer?

The Klipsch RP-404C II reaches down to 87Hz (full range 87-25k Hz). That leaves the lowest octaves out, so a subwoofer will make a clear difference for films and bass-heavy music.

What drivers does the Klipsch RP-404C II use?

The Klipsch RP-404C II is a 2-way design using a 1" Tractrix Horn tweeter and 4 x 4" Cerametallic cone woofers.

Is the Klipsch RP-404C II sealed or ported?

The Klipsch RP-404C II uses a Sealed enclosure. A sealed box trades some output for tighter, more even bass and is the more forgiving choice close to a wall.

Can the Klipsch RP-404C II be bi-wired or bi-amped?

No. The Klipsch RP-404C II has a single pair of terminals, so bi-wiring and bi-amping are not possible. It uses Binding post terminals.

Does the Klipsch RP-404C II come with grilles?

Yes. The Klipsch RP-404C II comes with removable grilles (black).

How big and heavy is the Klipsch RP-404C II?

The Klipsch RP-404C II weighs 9.20kg / 20.2lbs each and measures 5-3/4 x 26-7/8 x 6-1/2inch (HxWxD).

How much does the Klipsch RP-404C II cost?

The Klipsch RP-404C II has a manufacturer's list price (MSRP) of $599 per pair.


Klipsch RP-404C II Detailed Specifications

General
BrandKlipsch
Full Model NameKlipsch Reference Premiere RP-404C II
Speaker Type2-way Center Channel
Power Rangeup to 125 watts
Sensitivity94 dB
Impedance8 ohms
Frequency Response87-25k Hz
Release Date2022
DRIVERS
Woofer Size4-inch
Woofer CompositionCerametallic cone
Woofer SurroundRubber
Tweeter Size1-inch
Tweeter TypeTractrix Horn
Crossover freq1900 Hz

CONNECTIONS
Connector TypeBinding post
Biamp InputsNo
PHYSICAL SPECS
Height147.0mm ( 5-3/4-inch)
Width683.0mm ( 26-7/8-inch)
Depth166.0mm ( 6-1/2-inch)
Height147.0mm ( 5-3/4-inch)
Weight9.2 kg (20.3 lbs)
EnclosureAcoustic Suspension
FinishMDF/Wood-grain vinyl
Available ColorsWalnut, Black
GrilleYes
Moisture ResistanceNo
OTHER
Handheld RemoteNo
Parts Warranty5 Years
Labor Warranty5 Years
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