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Orwell MK2 Floorstanding PA speaker KIT

The kit provides a Celestion CDX20-3020 driver with a P-Audio PH-2380 horn as tweeter. Two Celestion FTR15-4080F are used for the bass range.

Orwell MK2 is developed by Daniel Gattig and Dennis Frank.The crossover consists of a 3rd order high-pass filter (18 dB per octave slope) for the tweeter. A 2nd order low pass filter (12 dB per octave slope) is connected to the lower woofer and has a cut-off frequency of 300 Hz.
 The upper woofer is connected to a 2nd. order low pass filter with a cut off frequency of 1000 Hz. In the bassrange below 300 Hz both woofers are working in parallel.The frequency response of this speaker nearly linear.
The decay spectrum shows some little horn typical artefacts. At medium volume, i.e. 95 dB at 1 m, the nonlinear distortions are lower than 1% between 150 and 5000 Hz; at a level of 105 dB at 1 m the distortion is below 1.5%.

Our kit consists of:

  • Celestion CDX20-3020, 3 inch-Titanium-Driver, 8 Ohm
  • P-Audio 2 inch horn PH-2380
  • 2x Celestion woofer FTR15-4080F, 97dB, 40Hz-1.5kHz
  • PE sealing tape, 5×2 mm, 7.5 m
  • 2,5x Foam N25, 100x50x4 cm, black
  • 2x Neutrik Speakon NL4MPR, connector round, 4 pin
  • 4m Speaker cable 2×2.5 mm2, transparent
  • 26x 1 pieces drive-in nuts M6, DIN 6930 g zinc-plated
  • 16x 1 pieces Allen screws M6x50, DIN 912, black
  • 10x Counter sunk screw black phosphatised M 6 x 30
  • 4x Adam Hall 4907 rubber foot
  • 2x Handle recess GSM-220, steel 22×16 cm, black
  • Plan for DIY kit

Technical data

  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 98 dB
  • size (HxWxD): 1250 x 500 x 500 mm
  • frequency range (-8dB): 50 – 21000 Hz
  • crossover frequency(s): 1000 Hz
  • speaker type: bass reflex
Find out more here.

Celestion Speaker IRs – A Cure for Speaker Envy?

Celestion Speaker IRs – A Cure for Speaker Envy?

There’s only thing better than owning a classic Celestion guitar speaker – and that’s owning all of them!
 
But who, realistically, can afford to buy every model of Celestion speaker and try them out? Especially if you use a 2×12 or 4×14 cabinet. In practice, most players will only change speaker type when their current speaker needs replacing.
 
Even if you’re absolutely loyal to, say, your Vintage 30, your G12-65 or your Alnico Blue, and would never dream of abandoning it for another model, it’s hard not to be tempted to try out some of the other classic Celestion tones if you get the chance.
 
With Celestion IRs, this idea has become very realistic, and affordable too, enabling you to explore a wide (and ever increasing) range of classic Celestion speakers in digital form, without breaking the bank. You need never suffer from speaker envy again.
 
Find out about 4 other speaker problems you can say Goodbye to when you start using Celestion IRs, at this blog.
 

Celestion Shares Insights into their ‘Authestion Marked’ Protection Technology for their line of Downloadable Impulse Responses

Ipswich, UK (August 1, 2017) —  After customer requests for more information, Celestion is pleased to share insights into the technology behind Authestion Marked, their own proprietary audio protection technology for their digitally downloadable catalog of Impulse Responses. This technology is designed both to reassure customers they have purchased genuine Celestion brand downloads and to track unauthorized sharing of the downloads. The company has Authestion Marked the full range of authentic Celestion Impulse Responses available at  Celestion Plus.

Authestion Marked technology represents a marked improvement over traditional digital marking of audio files for music to ensure authorized use. The audio engineers at Celestion developed this special technology to meet the unique characteristics of downloadable Impulse Response files –without any effect on the way that the genuine tones sound.  Authestion is essentially audibly invisible – so customers can be assured that Celestion IRs always represent the definitive digital representations of the company’s classic guitar speaker tones.

When a customer places an order for a particular Celestion IR download, Authestion works by adding a unique Identifier within the waveform of the file, making it unique and therefore traceable.  The Identifier does not capture any personal data of the customer, nor effect the way the IRs work or are installed by the licensed user. This simply allows Celestion to determine when and who purchased the IR file and track the use of the downloads should unauthorized, widespread sharing be encountered.

“Celestion has invested a great deal in developing and perfecting our genuine Impulse Responses, using the finest state-of-the art gear, award-winning engineers and world-class recording facilities,” says Nigel Wood, Celestion Managing Director. “Having our authentic IR downloads Authestion Marked is not only important to us, given the expertise and efforts we’ve put into such a high quality product, but also fair to our valued customers who have paid to download authentic Celestion IRs.”

View the complete range of Authestion Marked Celestion Impulse Responses available at Celestion Plus, including the A-Type, Neo Creamback,  G12-H150 Redback,  G12M Greenback, G12M-65 Creamback, G12M-75 Creamback, G12H Anniversary, G12-65,  Celestion Blue and Vintage 30 models mounted in 1×12 and 2×12 open and closed back and 4×12 cabinets (5 varieties of each.) All the Celestion IRs are available for download both as an individual single cabinet-type IR as well as a full collection.

Read more about Authestion Marked technology on the Celestion Plus blog: https://www.celestionplus.com/news/authestion-marked-celestion-impulse-response-downloads/.

About Celestion Impulse Responses

Celestion IRs, which capture the essential behavior of the cabinet in the specific space in which it was recorded, including the frequency and phase response of single drivers as well as the interaction of multiple speakers, offer the user significant benefits. In both recording and live production, Celestion IRs enable the desired tone to be precisely and consistently reproduced regardless of the music recording or live sound environment. And IR users can escape the limitations of a single mic and cabinet setup and explore a universe of possibilities to create the perfect tone. Once you find a tone that you love, it can be precisely recreated, in the studio or on the road, time after time. And the IRs allow Celestion customers to audition specific models before purchasing one or more physical speakers.

Celestion IR digital downloads are available in uncompressed, industry standard .WAV format at 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz sample rates at 24 bit depth, in lengths of 200 and 500 milliseconds Once the files are downloaded and unzipped, users simply load the IRs into a convolution plug-in in their DAW or into other processing hardware. These formats will work in all known hardware capable of loading IRs, and for the most popular hardware Celestion have already grouped together the correct formats. Guitar processor manufacturers supported include Atomic Amps, Fractal Audio Systems, Kemper, Line 6, Logidy, Positive Grid, Two Notes, Headrush and Yamaha. The Celestion IR files may be downloaded in the sample rate and length appropriate for the hardware being used or as a complete package of all rates and lengths. Certain third party hardware requires the files to be converted into a proprietary format before use. Visit Celestion Plus.

About Celestion and Celestion Guitar Speakers
An important element to essential British guitar tone since the birth of Rock & Roll, Celestion Guitar Speakers are famous for their lively and vocal midrange character with plenty of sparkle and chime. With worldwide headquarters in Ipswich, England, Celestion design, develop and manufacture premium guitar and bass loudspeakers, and high-quality professional audio drivers for sound reinforcement. These world-renowned speakers are used onstage and in clubs, theatres and other venues the world over. Contact Celestion at: info@Celestion.com and visit us on Facebook at www.Facebook.com/Celestion.
www.celestion.com

Celestion Launches Neo Creamback Impulse Responses

Ipswich, UK (June 8, 2017) —   Celestion is pleased to announce the addition of the Neo Creamback IR guitar speaker tones to their acclaimed line of Impulse Responses. As the premier manufacturer of guitar and bass loudspeakers with a rich history in creating classic guitar tones known the world over, Celestion insists upon the utmost standards for their Impulse Responses, which are created using state-of-the art gear, award-winning engineers and world-class recording facilities. As a result, Celestion Impulse Responses are the definitive digital representations of the company’s renowned classic guitar speaker tones. The new Neo Creamback Impulse Responses, along with the eight other classic loudspeaker IRs which premiered earlier this year, are available for audition and download at Celestion Plus.

While the original Neo Creamback has been created using a neodymium magnet assembly, making it around half the weight of a traditional ceramic magnet speaker, the weight of course doesn’t matter when it comes to Impulse Responses. But the newly designed magnet assembly also adds a little extra magic of its own to the Creamback-style tone. While still providing the punch of a ceramic magnet Creamback together with a warm and vocal midrange, the Neo Creamback adds to this the shimmering presence of an Alnico guitar speaker as well as some additional note separation, all captured as well in the new Neo Creamback IRs.

Five individual IR varieties of the Neo Creamback are available for download, which correspond to each of 5 separate types of cabinet, including:

  • 1×12 (open back)
  • 1×12 (closed back)
  • 2×12 (open back)
  • 2×12 (closed back)
  • 4×12 (closed back)

And for each of these cabinets, three different professional studio quality microphones were used, each placed in six discrete locations. (thereby resulting in eighteen impulse responses per cab). In addition, Celestion has incorporated eight more impulse responses for each cabinet, created by mixing together various single IRs, offering further tonal choice. Click here to find out more about the combinations of microphone that have been used for the mixes.

“Celestion is thrilled by the amazing reception from our customers to our line of Impulse Responses, says Nigel Wood, Celestion Managing Director. “We are pleased to add the Neo Creamback to the IR family, and we will continue to make more original, authentic Celestion Impulse Responses available as a natural extension of our product range — providing our celebrated speaker tones in a convenient digitally downloadable format.”

The new Neo Creamback Impulse Responses join the other classic set list of Celestion IRs available for purchase including the G12-H150 Redback,  G12M Greenback, G12M-65 Creamback, G12M-75 Creamback, G12H Anniversary, G12-65,  Celestion Blue and Vintage 30 models mounted in 1×12 and 2×12 open and closed back and 4×12 cabinets.  The new Neo Creamback IRs are available for download both as an individual single cabinet-type IR as well as a full collection.

About Celestion Impulse Responses

Celestion IRs, which capture the essential behavior of the cabinet in the specific space in which it was recorded, including the frequency and phase response of single drivers as well as the interaction of multiple speakers, offer the user significant benefits. In both recording and live production, Celestion IRs enable the desired tone to be precisely and consistently reproduced regardless of the music recording or live sound environment. And IR users can escape the limitations of a single mic and cabinet setup and explore a universe of possibilities to create the perfect tone. Once you find a tone that you love, it can be precisely recreated, in the studio or on the road, time after time. And the IRs allow Celestion customers to audition specific models before purchasing one or more physical speakers.

Celestion IR digital downloads are available in uncompressed, industry standard .WAV format at 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz sample rates at 24 bit depth, in lengths of 200 and 500 milliseconds Once the files are downloaded and unzipped, users simply load the IRs into a convolution plug-in in their DAW or into other processing hardware. These formats will work in all known hardware capable of loading IRs, and for the most popular hardware Celestion have already grouped together the correct formats. Guitar processor manufacturers supported include Atomic Amps, Fractal Audio Systems, Kemper, Line 6, Logidy, Positive Grid, Two Notes, Headrush and Yamaha. The Celestion IR files may be downloaded in the sample rate and length appropriate for the hardware being used or as a complete package of all rates and lengths. Certain third party hardware requires the files to be converted into a proprietary format before use. Celestion Plus.

About Celestion and Celestion Guitar Speakers
An important element to essential British guitar tone since the birth of Rock & Roll, Celestion Guitar Speakers are famous for their lively and vocal midrange character with plenty of sparkle and chime. With worldwide headquarters in Ipswich, England, Celestion design, develop and manufacture premium guitar and bass loudspeakers, and high-quality professional audio drivers for sound reinforcement. These world-renowned speakers are used onstage and in clubs, theatres and other venues the world over. Contact Celestion at: info@Celestion.com

and visit us on Facebook at www.Facebook.com/Celestion.
www.celestion.com

Celestion Introduces the G12H-150 Redback Guitar Speaker Impulse Responses

Ipswich, UK (May 8, 2017) — Celestion is pleased to announce the introduction of  G12H-150 Redback Guitar speaker tones as new additions to their celebrated line of Impulse Reponses. As the premier manufacturer of guitar and bass loudspeakers, Celestion created their line of IRs using state-of-the art gear, award-winning engineers and world-class recording facilities, so that the tones are the definitive digital representations of the company’s renowned classis guitar speaker tones. The new G12H-150 Redback Impulse Responses, along with the seven other classic loudspeaker IRs which premiered earlier this year, are available for audition and download at Celestion Plus.

The Celestion G12H-150 Redback is a guitar speaker of contrasts, built to deliver towering slabs of frightening, monstrous tone, while still delivering marked detail and clarity. The new G12H-150 Impulse Responses allow players to now get this gargantuan tone direct to their modeling amp or audio workstation, and dial in balance, responsiveness and the superb playability of the Redback with ease.

Five different Impulse Responses are available for the G12H-150 Redback speaker, representing five distinct cabinet types, including: 1×12 (open back,) 1×12 (closed back,) 2×12 (open back,) 2×12 (closed back) and 4×12 (closed back.) The responses from every one of the cabinets have been recorded with three high quality, professional, studio-standard recording microphones, with each one placed in six distinct positions (the result being 18 IRs for every cabinet type). In addition, w a further eight IRs per cab are included, which have been created by mixing a selection of single IRs, for additional tonal options.

“Celestion have enjoyed an overwhelmingly positive reception to our new Impulse Responses since their introduction just a few months ago, so adding the acclaimed Redback to our line of IRs was a natural fit,” says Nigel Wood, Celestion CEO. “We will continue to make more original, authentic Celestion Impulse Responses available as a natural extension of our product range — providing the authentic speaker tone our customers want, in a convenient digitally downloadable format.”

The new G12H-150 Redback Impulse Responses join the original set list of Celestion IRs available for purchase including the G12M Greenback, G12M-65 Creamback, G12M-75 Creamback, G12H Anniversary, G12-65, Celestion Blue and Vintage 30  models mounted in 1×12 and 2×12 open and closed back and 4×12 cabinets.  Celestion IRs, which capture the essential behavior of the cabinet in the specific space in which it was recorded, including the frequency and phase response of single drivers as well as the interaction of multiple speakers, offer the user significant benefits. In both recording and live production, Celestion IRs enable the desired tone to be precisely and consistently reproduced regardless of the music recording or live sound environment. And IR users can escape the limitations of a single mic and cabinet setup and explore a universe of possibilities to create the perfect tone. Once you find a tone that you love, it can be precisely recreated, in the studio or on the road, time after time. And the IRs allow Celestion customers to audition specific models before purchasing one or more physical speakers.

Celestion IR digital downloads are available in uncompressed, industry standard .WAV format at 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz sample rates at 24 bit depth, in lengths of 200 and 500 milliseconds Once the files are downloaded and unzipped, users simply load the IRs into a convolution plug-in in their DAW or into other processing hardware. These formats will work in all known hardware capable of loading IRs, and for the most popular hardware Celestion have already grouped together the correct formats. Guitar processor manufacturers supported include Atomic Amps, Fractal Audio Systems, Kemper, Line 6, Logidy, Positive Grid, Two Notes Headrush and Yamaha. The Celestion IR files may be downloaded in the sample rate and length appropriate for the hardware being used or as a complete package of all rates and lengths. Certain third party hardware requires the files to be converted into a proprietary format before use.

The new G12-H 150 Redback Impulse Responses are available both as an individual single cabinet-type IR as well as a collection which includes all five cabinet. For more information about Celestion Impulse Responses, visit www.celestionplus.com.

About Celestion and Celestion Guitar Speakers

An important element to essential British guitar tone since the birth of Rock & Roll, Celestion Guitar Speakers are famous for their lively and vocal midrange character with plenty of sparkle and chime. With worldwide headquarters in Ipswich, England, Celestion design, develop and manufacture premium guitar and bass loudspeakers, and high-quality professional audio drivers for sound reinforcement. These world-renowned speakers are used onstage and in clubs, theatres and other venues the world over. Contact Celestion at: info@celestion.com and visit us on Facebook at www.facebook.com/celestion.

www.celestion.com

 

DIY Home Hi-Fi kit with coaxial driver

Celeste is a full range home loudspeaker with Celestion coaxial driver, developed by Thomas Schmidt and Holger Barske as bass reflex system.

Featuring a TF1225CX coaxial driver, the coaxial system itself is no longer identifiable as the high frequency unit is hidden from view, under the dust protection.

The crossover consists of a second order high pass filter (12 dB per octave slope) and a 3rd order low pass filter.

Technical data

  • impedance: 8 Ohm
  • sensitivity (2,83V/1m): 94 dB
  • size (HxWxD): 610 x 520 x 387 mm
  • frequency range (-8dB): 35 – 20000 Hz
  • crossover frequency(s): 1900 Hz
  • speaker type: bass reflex

To find out more and to purchase the kit, go to Lautsprechershop, here.

Hi-Fi Speaker Kit Featuring FTR08-2011D

Designed by our good friends at Lautsprechershop www.lautsprechershop.de and available as a built it yourself kit, Javari is a high performance loudspeaker system that can be configured for different situations: as a passive speaker, as an active solution and in a wide variety of modular setups – compact, XL and XXL.

What is it?

The heart of the Javari is a compact speaker which transforms into the high-midrange component of XL and XXL floor-standing configurations. A high efficiency Alcone AC 15 textile dome tweeter is paired with a Celestion FTR08-2011D, giving an astoundingly high overall efficiency of 93 dB.

Due to its high efficiency the Javari is a lot of fun to use, whether it is controlled by a tube amplifier or the broad dynamic range required for the home cinema. For the Javari XXL Tower, the Javari Top is accompanied by two subwoofer columns, each of one contains an Alcone AC 10 subwoofer driver.

The Javari Top uses a crossover of 2nd order (12 dB per octave slope). In this setup, the Javari top gets a first-order high-pass filter with large capacitors, the subwoofers are filtered via a second-order low-pass. The frequency response of the speaker is quite linear with a slight peak at 12 kHz.

At an average sound pressure level of 85 dB (1m), the non-linear distortions above 400 Hz are extremely low. At 95 dB SPL (1m) these distortions still are well controlled. The decay spectrum shows almost no irregularities except for some resonances around 500 Hz.

Technical data

  • impedance: 4 Ohm
  • sensivity (2,83V/1m): 94 dB
  • size (HxWxD): 1760 x 300 x 400 mm
  • frequency range (-8dB): 28 – 20000 Hz
  • crossover frequency(s): 150, 2200 Hz
  • speaker type: bass reflex

For more details, plans and a kit list, click here.

Open Back or Closed Back Cabinet – Which is for Me?

It’s widely known that loudspeaker choice can play a big part in your tone. What’s a little less well known is that many elements of the speaker cabinet’s construction also contribute. This includes the size of the cabinet, type of wood, thickness of baffle (the panel that the speaker is mounted to) and how the parts of cabinet are joined together.

Perhaps the most significant element of a cabinet’s construction, however, is whether the back is open or closed. Believe it or not the same amplifier will sound significantly different when driving speakers in either open back or closed back cabinets.

Open Back Cabinet

Most open back cabinets are actually just partially open, with upper and lower panels covering half or more of the back. They allow some of the speaker sound to radiate from the back and to a lesser extent, the sides.

In general open back cabs have a room filling quality that sounds open and natural. Without a complete back panel that compresses the speaker’s ‘voice’, open back cabinets might be considered a more organic representation of a guitar sound. High frequencies particularly benefit from this – they have lots of presence. The low end will tend to feel looser.

On stage, this wash of sound can be quite helpful when there are no monitors – your drummer might be grateful for that! In the studio it provides some excellent options in terms of microphone placement. A slightly different tonality will be available at the rear of the cab, and the use of an isolation booth can create a more complete soundscape than you could capture using multiple microphones.

Closed Back Cabinet

Unlike the open back cabinet, closed back cabs can really only project the sound forwards, meaning no back spill or side leakage from the cabinet. This tends to accentuate and harden midrange and bass sounds, giving them a greater amount of low end punch.

This increased directionality can make them harder to hear on stage unless you’re directly in front, but is a boon for sound-men who would otherwise have to contend with the ambient ‘wash’ produced by an open back cabinet.

Which is for Me?

At Celestion we’re often asked “which type of cabinet is best for me?”

As a rule of thumb, closed back cabinets tend to project the sound forwards and yield a punchier, more structured tone with crisper definition. Contrast that with open back cabinets that are much more inclined to fill the room they are in, providing a more natural and organic sound with a greater ambient quality.

Just like with all tone-based decisions, it ends up being subjective, it’s entirely dependent on what you like to listen to and the kinds of sounds you’re seeking. So with all the above information in mind, take every opportunity to play as many different types of cab as possible open back or closed back, as well as every kind of speaker you can find. Trust your ears and they’ll help you find what you like the sound of most.

Does (Speaker) Size Matter?

These days, guitar speakers are available in a range of sizes from two or three inches right up to 15-inch. Smaller speakers are great for bedroom blasters and practice amps where reduced output at low frequencies can minimize sound-‘spillage’ between rooms and keep the neighbours sweet.Probably the most popular format though, is the 12-inch speaker. But with an increasing range of quality 10-inch and some interesting 15-inch speakers available, we ask: “what role does speaker size play in the relentless pursuit of tone?”

Inside the Mind of the Speaker Designer

Practically all a guitar speaker’s constituent parts contribute in some way to its sonic signature. Chief among them are voice coil, magnet assembly and cone (but also influential are the suspension, surround, dustcap, cone treatments, etc) Each of these factors interact with the others, together contributing to overall tone. These interactions, though in some cases very complex, are governed by certain principles of physics, in particular:

1. Output level (a.k.a. sensitivity) is determined by how efficiently the speaker converts electrical energy into movement of air.

2. Sound dispersion is controlled by the directional nature of high frequency sound and the tendency of certain cone shapes to focus the output signal in different ways.

3. For guitar speakers in particular, vibration ‘modes’ within the body of the cone add much of the harmonic complexity and coloration that significantly contributes to great tone.

The speaker designer uses their expertise to find the right mix of all of these factors to hit a given ‘tone target.’

Imagine we want to use a small speaker with a thin and light cone. There would be more intense vibration modes within this type of cone (compared to a cone of greater thickness, which would be more resistant to these vibrations), resulting in a richer, more harmonically complex tonality. However, use the same cone thickness with a larger diameter speaker and that cone might lack sufficient stiffness to withstand the proposed power handling, and could buckle under the force of the moving voice coil.

In this situation there would need to be some ‘trade-off’ between tonality and power handling, requiring the designer to make both musical and technical choices to reach a desirable and workable solution. An experienced speaker designer will have the capability to identify the ‘right’ choices to make in these situations, and use the opportunity to create a completely new sounding speaker.

What This Means For Tone

So we see that attributes like size, harmonic complexity, power handling and high-note dispersion are clearly linked in the design process. Over time, the 12-inch speaker has come to be regarded as having the best balance of these attributes. However, 10s and 15s can offer some alternative, interesting and even exotic flavors!

Good sounding 10s can deliver a fast, punchy sound at wider listening angles with reduced ‘boom’ on small stages. They often offer increased portability, reduced cost and the ability to push your amp into overdrive at reasonable levels without having drumsticks aimed at the back of your head!

A well-designed 15 can move more air so you can gig those wonderful little valve amps. The vocal range can be creamier, with extended low end and lots of detail and harmonic complexity. It can give surprising richness to some otherwise scratchy-sounding guitar and amp combinations.

Which Size for You?

Changing speakers can have a greater impact on tone than swapping guitar, pickup, or even amplifier. So ask yourself, why just one size of speaker? As players all we need do is select the right one according to situation, application and desire.

> For the recording or practice session: why not try a small amp through a sweet well-balanced 10.
> At your big break support gig on the city hall stage: how about a 4 x 12!
> Need to add some beef to your retro ‘plasticaster’ use your 1 x 15 cabinet.

What’s more, just as boutique amp makers have mixed different models to increase harmonic detail, why not take this a step further and mix 10s, 12s and even 15s to create that unique signature sound!

Dual Subwoofer Design (Bass Reflex)

CF1840JD Basic Parameters: Vas: 113.9; Qts: 0.44; Fs: 44.20; SPL: 98.00

Number of drivers: 2

Box type: Vented – 0.195 m length, 12.00 x 90.00 cm rectangle

Box size: 1.5 inch thickness for solid construction.

Notes
SPL inside the box at 1000w (approximate): 131 dB.
Speakers connected in parallel to obtain 4 ohms.

Check out the full design information in the attached PDF.