Speaker chassis: For the passion for your (own) sound

MONACOR has stood for DIY and repairing instead of throwing away for decades.

The best thing is when we can inspire new hobbyists for the DIY passion. Or when we save the life of a speaker with our chassis. We know: The optimal sound is subjective. Sure, a smooth frequency response is beautiful. Positioning perfectly in line with the directivity pattern, listening in the sweet spot, is simply a pleasure. But for many, it is even more satisfying to build a Hi-Fi speaker precisely the way they have been dreaming of. Are you already a hobbyist, tinkerer, sound experimenter yourself? Or would you like to get started with this wonderful hobby? Or do you regularly repair speakers? Then you know that well thought-out construction plans only work out when the right components are in a good, cost-efficient relation to the final performance. On this page we present our large variety of speaker chassis.

By the way: We have more DIY accessories such as coils, controls and crossover networks.

The speaker chassis is the heart of a speaker

The speaker chassis includes:

the speaker basket
the magnet
the moving coil
the bead
the membrane

The speaker chassis is the speaker without the housing and the crossover network. We offer you an extensive selection of speaker chassis that you can use to build your own Hi-Fi speakers or PA speakers. To help beginners get their bearings, we explain below the most important terms for the first steps.

Our speaker chassis for PA

PA coaxial speakers and full range speakers

Are you looking for a versatile low-frequency unit for various applications? Our SP-382PA

The speaker chassis SP-382PA feels at home everywhere and is both a universal recommendation and a good first step for your own speaker system.

Impedance (Z): 8 Ω
Frequency range: f3-4000 Hz
Resonant frequency (fs): 25 Hz
Power rating (RMS): 150 W
Music power rating (MAX): 300 W
Sound pressure level: 94 dB/W/m
Suspension compliance (Cms): 0.26 mm/N

More about SP-382PA

The speaker chassis SP-382PA feels at home everywhere and is both a universal recommendation and a good first step for your own speaker system.

Impedance (Z): 8 Ω
Frequency range: f3-4000 Hz
Resonant frequency (fs): 25 Hz
Power rating (RMS): 150 W
Music power rating (MAX): 300 W
Sound pressure level: 94 dB/W/m
Suspension compliance (Cms): 0.26 mm/N

More about SP-382PA

Are you looking for a stable, low-distortion full range speaker for monitoring and full-range PA application? Our SP-30PATC

The high-quality speaker chassis comes in a particularly stable diecast basket. A great deal of attention is paid to the linear frequency response coupled with exceptional bandwidth. The special twin-cone design with dust cap stabilises this speaker chassis even more. The SP-30PATC is suitable for all scenarios that require particularly low-distortion PA applications, for example in monitoring or full-range PA applications.

Impedance (Z): 8 Ω
Frequency range: f3-15000 Hz
Resonant frequency (fs): 47 Hz
Power rating (RMS): 200 W
Music power rating (MAX): 400 W
Sound pressure level: 99 dB/W/m
Suspension compliance (Cms): 0.29 mm/N

More about SP-30PATC

The high-quality speaker chassis comes in a particularly stable diecast basket. A great deal of attention is paid to the linear frequency response coupled with exceptional bandwidth. The special twin-cone design with dust cap stabilises this speaker chassis even more. The SP-30PATC is suitable for all scenarios that require particularly low-distortion PA applications, for example in monitoring or full-range PA applications.

Impedance (Z): 8 Ω
Frequency range: f3-15000 Hz
Resonant frequency (fs): 47 Hz
Power rating (RMS): 200 W
Music power rating (MAX): 400 W
Sound pressure level: 99 dB/W/m
Suspension compliance (Cms): 0.29 mm/N

More about SP-30PATC

our more of service

Technical Project Management

The times when customers just bought products are definitely over, especially in the field of PA technology. The challenges and thus the solutions become more and more complex. In most cases, even a state-of-the-art website or a catalogue with a perfect structure is often no longer sufficient.

B2B-Webshop

You as a B2B customer, you are always at the centre of our attention. Depending on your consulting and service needs, we offer you various ordering options. In our modern webshop with its simple, secure and barrier-free ordering process, you always have an overview of all product availabilities and your individual prices.

Technical Customer Service

In case of repairs, warranty cases or complaints, our Technical Customer Service is the central contact for retail partners, constructors and installers. Repair and service work are carried out swiftly with the professional expertise known from MONACOR. We, of course, ensure a prompt and straightforward response and fast processing times.

Looking for a high-efficiency midrange speaker for a multi-way PA speaker system? Our TF-0615MR

Speaker chassis in the TF series impress with an excellent price-performance ratio with a very linear frequency response in the most important range for midrange drivers. But who is satisfied with performance alone? Stringent requirements for very good sound characteristics were applied in the development of this unit. This compact 18 cm PA midrange speaker (6 ¾") with a closed sheet steel basket has truly earned its place in high-performance and powerful PA speaker systems. Extra housing volume is not necessary. impedance linearisation can be used from approx. 800 Hz and from 1000 to 5000 Hz. The 38 mm (1.5") moving coil on a Kapton moving coil carrier is heat-resistant, and the cellulose cone is reinforced with Kevlar fibres.

Impedance (Z): 8 Ω
Frequency range: 500 to 5000 Hz
Resonant frequency (fs): 500 Hz
Power rating (RMS): 50 W
Music power rating (MAX): 100 W
Sound pressure level: 97 dB/W/m

More about TF-0615MR

Speaker chassis in the TF series impress with an excellent price-performance ratio with a very linear frequency response in the most important range for midrange drivers. But who is satisfied with performance alone? Stringent requirements for very good sound characteristics were applied in the development of this unit. This compact 18 cm PA midrange speaker (6 ¾") with a closed sheet steel basket has truly earned its place in high-performance and powerful PA speaker systems. Extra housing volume is not necessary. impedance linearisation can be used from approx. 800 Hz and from 1000 to 5000 Hz. The 38 mm (1.5") moving coil on a Kapton moving coil carrier is heat-resistant, and the cellulose cone is reinforced with Kevlar fibres.

Impedance (Z): 8 Ω
Frequency range: 500 to 5000 Hz
Resonant frequency (fs): 500 Hz
Power rating (RMS): 50 W
Music power rating (MAX): 100 W
Sound pressure level: 97 dB/W/m

More about TF-0615MR

Are you looking for a horn chassis with an extremely fine-resolution sound pattern in the high-frequency range? Our RBT-35SR

RBT-35SR s a true ribbon tweeter with a neodymium magnet system for the most demanding high-frequency PA applications. The horn chassis stands out with an extremely light, smooth, non-embossed aluminium sandwich membrane. It consists of an aluminium foil that is completely infused with the sound signal. The result: A finely detailed reproduction of the high frequencies and brilliance. The low impedance of this membrane is transformed to 5 to 8 ohms by a built-in high-quality transformer. This ribbon tweeter impresses with an extremely fine-resolution sound pattern in the high-frequency range. Continuous development means that these ribbons can now be used with crossover frequencies from 2500 Hz upwards. They are the best choice when it comes to premium Hi-Fi speakers or studio monitors. With a horn front attachment, this speaker chassis achieves a very high sound pressure level and constant bundling behaviour. Caution: Ribbons must not be operated without a crossover network! We supply a mounting flange and a protective grille with the chassis.

Impedance (Z): 7 Ω
Frequency range: 1100 to 30000 Hz
rec. separation freq. (f max.) (12 dB/oct.): > 3000 Hz
Power rating (RMS): 12 W
Music power rating (MAX): 25 W
Sound pressure level: 96 dB/W/m

More about RBT-35SR

RBT-35SR s a true ribbon tweeter with a neodymium magnet system for the most demanding high-frequency PA applications. The horn chassis stands out with an extremely light, smooth, non-embossed aluminium sandwich membrane. It consists of an aluminium foil that is completely infused with the sound signal. The result: A finely detailed reproduction of the high frequencies and brilliance. The low impedance of this membrane is transformed to 5 to 8 ohms by a built-in high-quality transformer. This ribbon tweeter impresses with an extremely fine-resolution sound pattern in the high-frequency range. Continuous development means that these ribbons can now be used with crossover frequencies from 2500 Hz upwards. They are the best choice when it comes to premium Hi-Fi speakers or studio monitors. With a horn front attachment, this speaker chassis achieves a very high sound pressure level and constant bundling behaviour. Caution: Ribbons must not be operated without a crossover network! We supply a mounting flange and a protective grille with the chassis.

Impedance (Z): 7 Ω
Frequency range: 1100 to 30000 Hz
rec. separation freq. (f max.) (12 dB/oct.): > 3000 Hz
Power rating (RMS): 12 W
Music power rating (MAX): 25 W
Sound pressure level: 96 dB/W/m

More about RBT-35SR

"The waterfall diagram shows a completely flawless, wonderfully fast and interference-free rear slope above the fundamental resonance. [...] A first-class high-frequency solution with a pleasingly broadband range of applications."
— Test report in Hobby HiFi on the RBT-35SR

We offer various accessories for speaker chassis:

DN-1218PAX

2-way crossover network for 8 Ω

2-way crossover network for 8 Ω Highest power rating version for PA Optimum filter effect for typical PA bass speakers of 30 cm and 38 cm …

Details

MZF-8615

Hexagon socket wood screws

Hexagon socket wood screws For stable and elegant speaker mounting 5 x 30 mm Black Self-cutting 16 pcs. Manufacturer information: …

Details

MZF-8625

Fixing clamp for speaker grilles

Fixing clamp for speaker grilles Large version Metal Black lacquered Drill hole size: 7 x 11 mm Dimensions: 38 x 30 x 20 mm …

Details

MZF-8632

Protective speaker grille, Ø 380 mm

Protective speaker grille For 38 cm (15") speakers Classic shape with square perforation and rubber rim Black lacquered To be fixed with…

Details

Our speaker chassis for Hi-Fi

Are you looking for miniature speakers for line arrays, sound columns, satellite systems? Our SPX-21M

Do you want to get the most out of a small amount of space? The SPX-21M is a full range speaker with very high sound quality that takes up a minimum of space (55.5 x 55.5 x 34 mm). The inverse laminated cone contributes to a very clean sound. The spider is ventilated, the chassis is based on a neodymium magnet system. The very small moving mass of the oscillating system is particularly interesting. If you use this miniature speaker with a bass-midrange speaker, it is perfect for use as a tweeter system with a low crossover frequency.

Impedance (Z): 4 Ω
Frequency range: f3-22000 Hz
Resonant frequency (fs): 170 Hz
Power rating (RMS): 12 W
Music power rating (MAX): 25 W
Sound pressure level: 84 dB/W/m
Suspension compliance (Cms): 0.6 mm/N

More about SPX-21M

Do you want to get the most out of a small amount of space? The SPX-21M is a full range speaker with very high sound quality that takes up a minimum of space (55.5 x 55.5 x 34 mm). The inverse laminated cone contributes to a very clean sound. The spider is ventilated, the chassis is based on a neodymium magnet system. The very small moving mass of the oscillating system is particularly interesting. If you use this miniature speaker with a bass-midrange speaker, it is perfect for use as a tweeter system with a low crossover frequency.

Impedance (Z): 4 Ω
Frequency range: f3-22000 Hz
Resonant frequency (fs): 170 Hz
Power rating (RMS): 12 W
Music power rating (MAX): 25 W
Sound pressure level: 84 dB/W/m
Suspension compliance (Cms): 0.6 mm/N

More about SPX-21M

"The SPX-31M is ideal for a desk speaker system where [...] clean sound at low volume [...] is important."
— Hobby HiFi 05/2019

Are you looking for a high-quality, clearly radiating Hi-Fi full range speaker? Our SPX-32M

The SPX-32M is ideal for use in small speakers or satellite systems and is ideal for use in FAST speakers (full-range and subwoofer technology). It stands out with its particularly high sound quality thanks to a filigree paper cone and a wooden phase plug to optimise the sound radiation behaviour.The spider is ventilated and the magnet system is shielded.

Impedance (Z) 8 Ω
Frequency range: f3-22000 Hz
Resonant frequency (fs): 110 Hz
Power rating (RMS): 20 W
Music power rating (MAX): 40 W
Sound pressure level: 88 dB/W/m
Suspension compliance (Cms): 1.11 mm/N

More about SPX-32M

The SPX-32M is ideal for use in small speakers or satellite systems and is ideal for use in FAST speakers (full-range and subwoofer technology). It stands out with its particularly high sound quality thanks to a filigree paper cone and a wooden phase plug to optimise the sound radiation behaviour.The spider is ventilated and the magnet system is shielded.

Impedance (Z) 8 Ω
Frequency range: f3-22000 Hz
Resonant frequency (fs): 110 Hz
Power rating (RMS): 20 W
Music power rating (MAX): 40 W
Sound pressure level: 88 dB/W/m
Suspension compliance (Cms): 1.11 mm/N

More about SPX-32M

"Audiophile genes thanks to paper cone and phase plug made of solid wood."
— Hobby HiFi 03/2012

Haas effect, Franssen effect, room modes and double bass arrays

4 exciting concepts from the field of (psycho)acoustics and what you should know about them

Open baffle:

how speakers can fill an entire room

Are you looking for a Hi-Fi ribbon tweeter suitable for home cinema? Our RBT-95SR

Ribbon tweeter like RBT-95SR give you a brilliant, finely defined high-frequency reproduction through a speaker chassis. The efficiency is exceptionally high. RBT-95SR works with a magnetostatic speaker with a horn front attachment and, compared to RBT-95 and RBT-10, is significantly more resilient. With its neodymium magnet system, the tweeter chassis is ideal for 3- and 4-way speakers or as a tweeter supplement for full range speakers. The chassis is refined with a longitudinally ribbed, slightly curved plastic front panel. RBT-95SR is part of the 2DOT1 kit.

Impedance (Z): 8 Ω
Frequency range: fx-22000 Hz
Resonant frequency (fs): 3500 Hz
Rec. separation freq. (f max.) (12 dB/oct.): 5000 Hz
Power rating (RMS): 40 W
Music power rating (MAX): 70 W
Sound pressure level: 98 dB/W/m

More about RBT-95SR

Ribbon tweeter like RBT-95SR give you a brilliant, finely defined high-frequency reproduction through a speaker chassis. The efficiency is exceptionally high. RBT-95SR works with a magnetostatic speaker with a horn front attachment and, compared to RBT-95 and RBT-10, is significantly more resilient. With its neodymium magnet system, the tweeter chassis is ideal for 3- and 4-way speakers or as a tweeter supplement for full range speakers. The chassis is refined with a longitudinally ribbed, slightly curved plastic front panel. RBT-95SR is part of the 2DOT1 kit.

Impedance (Z): 8 Ω
Frequency range: fx-22000 Hz
Resonant frequency (fs): 3500 Hz
Rec. separation freq. (f max.) (12 dB/oct.): 5000 Hz
Power rating (RMS): 40 W
Music power rating (MAX): 70 W
Sound pressure level: 98 dB/W/m

More about RBT-95SR

„The RBT-95SR, MONACOR delivers a pleasingly inexpensive magnetostat tweeter that promises excellent quality in the top high frequency range. [It] offers a squeaky clean frequency response that goes very linearly up to almost 20 kilohertz."
— Hobby HiFi 03/2013 on the RBT-95SR

„In our audio room, we were amazed when we put the system to the test. The small speakers seemed as if they were playing back the entire low-frequency component.“
— Klang+Ton 02/2013 on the RBT 95SR

Does the size of the speaker chassis matter?

Yes and no. The larger the diameter of a speaker, the lower the frequencies it can reproduce. And the bigger, the harder it is to reproduce high frequencies with the chassis.

Are you looking for Hi-Fi (bass) midrange speakers that can be used flexibly? Our SPH-5M

The SPH-5M is a carefully designed long-excursion Hi-Fi bass-midrange speaker. It has a dampened, low-resonance polypropylene cone and a stable, beautifully shaped die-cast aluminium basket with 6-hole screw connection. SPH-5M can be used universally in compact bass reflex, TML and closed speaker systems. One reason for this is that the chassis has a magnet system with a pole core hole and a protruding rear pole plate. Harmonises very well SPH-5M also as a midrange speaker in 3-way speakers.

Impedance (Z): 8 Ω
Frequency range: f3-4000Hz
Resonant frequency (fs): 45 Hz
Power rating (RMS): 40 W
Music power rating (MAX): 80 W
Sound pressure level: 88 dB/W/m
Suspension compliance (Cms): 1.06 mm/

More about SPH-5M

The SPH-5M is a carefully designed long-excursion Hi-Fi bass-midrange speaker. It has a dampened, low-resonance polypropylene cone and a stable, beautifully shaped die-cast aluminium basket with 6-hole screw connection. SPH-5M can be used universally in compact bass reflex, TML and closed speaker systems. One reason for this is that the chassis has a magnet system with a pole core hole and a protruding rear pole plate. Harmonises very well SPH-5M also as a midrange speaker in 3-way speakers.

Impedance (Z): 8 Ω
Frequency range: f3-4000Hz
Resonant frequency (fs): 45 Hz
Power rating (RMS): 40 W
Music power rating (MAX): 80 W
Sound pressure level: 88 dB/W/m
Suspension compliance (Cms): 1.06 mm/

More about SPH-5M

„Impressive deep bass down to 34 Hertz.“
— Test report of Hobby Hi-Fi 04/2012

For beginners and people who want to rediscover: Common terms related to speakers in practice

RMS (Power rating)

RMS is the abbreviation for "Root Mean Square". The RMS indicates how consistently the speakers work in the entire frequency range without sacrificing sound quality. In short, it is the kinetic resistance of the membrane suspension and is the result of the TSP measurement.

Sound pressure (sometimes also "Sensitivity")

The sound pressure level indicates how loud the speaker is with a 1 watt amplification when the volume is measured 1 metre away from the speaker. Very easy to remember: 1 watt power at 1 metre distance.

Frequency response

In our magazine you can find a detailed article about frequency response . Why is that important? Each speaker produces certain frequencies that are louder or quieter than others. The frequency response shows how the speaker handles different frequencies.

Test speakers – without an acoustic room and measuring devices?

Of course you can simply test a speaker with your favourite record and try to judge whether it sounds satisfactory. We have two tips for more demanding users. Listen:

1. to a strongly dynamically compressed piece of music,

such as heavy metal recordings from the late 80s and early 90s: do the kick drum and bass have a decent, juicy "punch" or do they sound bloated and "droning"?

2. to classical music

with very deep, rather subtle but powerful basses. This can be a pipe organ or a cello going down to 20 Hz. Contrabassoon and bass tuba can also be enough: Is the low bass here good and pleasant to hear, or is it distorted?

A range as varied as our customers

Of course, we can only show a small selection of our speakers here. You can find all the components too in our speaker technology category. If you are already a registered customer you can also find our chassis in the web shop. Furthermore, our team is at your service any time with advice and support.

Are you interested in more information about audio technology? Browse through our digital magazine:

Speech intelligibility with speakers

Everything you need to know about speakers and speech as a user, installer and architect

Setting up speakers correctly at home

setting up, positioning and aligning loudspeakers

Simply use the sound pressure level as a guide

The sound pressure level indicates how loud a speaker can be

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