Celestion, Foxhall Road, Ipswich, Suffolk IP3 8JP, England T: +44 (0)1473 322222 F: +44 (0)1473 729662 E: info@celestion.com W: www.celestion.com GUITAR LOUDSPEAKERS
CONTENTS G12 Century / G12 Century Vintage 4 Celestion Blue / Vintage 30 7 G12T-75 / G12M Greenback 8 G12H / Classic Lead 11 Welcome to the Celestion Guitar Speaker Catalogue 2003. Ever since Celestion developed the first dedicated guitar loudspeaker back in the 1950s, our speakers have articulated many of the most memorable guitar performances of all time. Celestion loudspeakers have also helped to create countless legendary guitar amps down the years and remain today the first choice of the world s leading manufacturers. More than simple drive units, Celestion speakers are the Voice of Rock & Roll. General Guitar Loudspeakers 12-13 Acoustic Guitar Loudspeakers 15 BL15-400 NEO 16 Bass Guitar Loudspeakers 18-20
THE VOICE OF ROCK & ROLL At Celestion, we live and breathe loudspeakers. After all, we ve been designing and building them for almost eighty years. A loudspeaker is a sophisticated device, so of course Celestion utilises the very latest development and measurement technology. Initial development is assisted by CAD (Computer Aided Design) while Finite Element Analysis (FEA) allows us to investigate the flow of magnetic flux and the field generated by different materials during magnet assembly design. With FEA, the engineer can tweak the virtual magnet assembly and shape the steel around the magnet to conduct the magnetic flux to exactly where the coil can use it best, keeping weight and cost to a minimum without compromising performance. Equally important is Laser Doppler Interferometry, in which laser light scans a live speaker cone producing a moving, visual representation of the cone s vibrations. Critically, LDI enables us to analyse the modes and resonances of a speaker cone producing real programme material rather than simple test tones. But it takes much more than great science to produce a great guitar speaker. It takes experience, dedication and expertise, and the Celestion factory is full of all three. The tonal quality of a guitar speaker will change more in the first five minutes of active use than throughout the rest of its life as the fibres in the cone need to settle into an equilibrium position in which they will work best.years of painstaking experimentation have taught us the perfect cone composition (a mixture of paper, fibrous material and other additives) and the precise formula for the doping substances required to fine-tune its compliance. We involve guitarists at every stage of development and manufacturing, and when it comes to testing, it may be an anechoic chamber that gives us the data, but it s the ultimate measuring tool - the human ear - that finishes the job.
Less than half the weight of a conventional ceramic unit, the new Celestion G12 Century is the first ever guitar speaker to incorporate an ultra-light Neodymium magnet structure.neodymium (actually an alloy of Neodymium, Iron and Boron) has far more powerful magnetic properties than traditional ceramic materials,enabling the magnet structure to be much smaller and hence lighter. The G12 Century is exceptionally efficient, combining high output with a firm bass and highly detailed mids and treble. Indeed many guitarists have described the sound of the G12 Century as like playing with a new set of strings which stay new, permanently! The G12 Century is also very responsive, capable of communicating every subtle nuance of a performance. G12 CENTURY The visually striking, die-cast aluminium heatsink keeps thermal compression at a minimum and definition and clarity at a maximum.the G12 Century s excellent sensitivity over a broad frequency range makes it suitable for all playing styles. Power rating (W)..................... 80 Sensitivity (db)..................... 102 Magnet type....................... Neo Frequency range (Hz)............. 80-5000 DC resistance, Re (Ω).................. 7 Overall depth (mm).................. 124 Magnet structure diameter (mm)........ 140 Unit weight (kg)..................... 2.0 The G12 Century Vintage is a new loudspeaker combining the advanced properties of a Neodymium magnet structure with traditional voicing to create an efficient, modern loudspeaker with an instantly recognisable vintage tone.the bass is tight and deep, the mids well-rounded and the high end is smooth and rich in harmonic content. Lifting a Century Vintage-loaded 4x12" cab is a refreshingly easy and entirely roadie-free experience.yet when it comes to performance, this speaker is anything but lightweight. Perfect for Nu-Metal,7-string players in particular will love the low end power and definition, even on the most over-driven sounds. Amp: Fender Cyber Twin combo Speakers: 2 x G12T-100 custom G12 CENTURY VINTAGE Power rating (W)..................... 60 Sensitivity (db)...................... 99 Magnet type....................... Neo Frequency range (Hz)............. 75-5000 Resonance frequency, Fs (Hz)............ 75 DC resistance, Re (Ω).................. 7 Overall depth (mm).................. 128 Magnet structure diameter (mm)........ 140 Unit weight (kg).................... 1.66 4
Originally developed in the 1950s from a successful Celestion radio speaker, the CT3757, the Alnico Blue is the world s first dedicated guitar loudspeaker. Its use in early Marshall and Vox amplifiers helped to define the sound of 60s British popular music and it remains today one of the most desirable guitar loudspeakers in the business. Alnico refers to the composition of its magnet material, an alloy of Aluminium, Nickel and Cobalt, and when combined with an overloaded tube amplifier, the Blue distorts easily, with its unique response smoothing the sound into gloriously creamy overtones rich in quality and sustain. The Blue also benefits from an exceptional dynamic range, making it a highly expressive speaker. CELESTION BLUE Load a Celestion Blue into a single 12" or 2 x 12" vintage combo and the sweet and bright tones lend it ideally to a range of playing styles including jazz, blues, country and indie. Power rating (W)..................... 15 Sensitivity (db)..................... 100 Magnet type...................... Alnico Magnet weight (g)................... 936 Frequency range (Hz)............. 75-5000 Resonance frequency, Fs (Hz)............ 75 DC resistance, Re (Ω)................ 6.4 Overall depth (mm).................. 165 Magnet structure diameter (mm)........ 128 Unit weight (kg)..................... 4.2 Amp: Marshall JCM2000 DSL100 Cab: Marshall JCM0 1960A 4 x 12" Speakers: 4 x G12T-75 VINTAGE 30 At the Celestion factory, not one of our speaker production lines is totally automated. There are certain parts of the construction process which we will only entrust to our skilled engineers, ensuring that every Celestion speaker retains the unique tonal characteristics that have made us famous. The Vintage 30 is a particularly special speaker and it needs even more human attention than usual. A modern speaker that can trace its roots to the original G12, the Vintage 30 combines high power handling with an instantly recognisable vintage tone. Seemingly twice as loud as anything else at the same power level (it has been said that a Vintage 30 makes a 50W head sound like a 100W), it handles massive overdrive sounds with ease.the Vintage 30 s 100dB sensitivity makes it ideal for use in high-gain tube amps and with tight bass, fat mids and a smooth, harmonically rich top, a fantastic s rock sound comes with all the added bass and overdrive you could ever want. Those with heart problems may want to consider a more subtle speaker from our range! Power rating (W)..................... 60 Sensitivity (db)..................... 100 Magnet weight (oz)................... 50 Frequency range (Hz)............. -5000 Resonance frequency, Fs (Hz)............ DC resistance, Re (Ω).................. 7 Overall depth (mm).................. 135 Magnet structure diameter (mm)........ 156 Unit weight (kg)..................... 4.7 7
Every Celestion guitar speaker benefits from four generations of skill and experience. But inevitably some become more famous than others, cherished for their unique tonal characteristics, sensitivity and responsiveness. The G12, born in in the 60s, became available in a variety of different magnet sizes, developing into a range of high quality loudspeakers. But it was the G12T-75 that rose to the fore and is now widely acclaimed as a great rock/metal/thrash guitar speaker. One of the best selling speakers of all time, it has a wide frequency range and excellent sensitivity. Emphasis is on huge bass, relaxed mids and vibrant highs which make for a brutal sound - solid and fat with plenty of sparkle. Its heavy duty aspect means that it handles extreme high gain and distortion like a gladiator. And this speaker will also retain a clean sound at much higher power levels than others can take. G12T-75 If you re a multi-talented frontman of the band, this speaker is great for amplifying other instruments as well. Just try mic ing a harmonica through it: the results are truly amazing! Power rating (W)..................... 75 Sensitivity (db)...................... 97 Voice coil material............round copper Magnet type.....................ceramic Magnet weight (oz)...................35 Frequency range (Hz)..............80-5000 Resonance frequency, Fs (Hz).............80 DC resistance, Re (Ω)................ 6.8 Overall depth (mm).................. 127 Magnet structure diameter (mm)........ 145 Unit weight (kg)..................... 3.5 Many great guitar solos have been voiced by the G12M Greenback. With the development of Rock and Roll, audience sizes grew and consequently more and more amplification became necessary. Celestion rose to the challenge of designing a loudspeaker which could cope with an increase in power and the G12 series was born. The G12M was the first speaker produced by Celestion to feature a ceramic magnet assembly. Through this, every subtlety of the player s dynamic style becomes wonderfully articulated. Today, as ever, the Greenback exudes a warmth and woodiness and yet retains the brightness and punch needed to cut through the rest of the band. Amp:Vox AC30TB combo Speakers: 2 x Vox Blue Ideally suited to a blues-rock style, the Greenback is a must-have speaker for anyone seeking classic tone. When you are looking for a quality unit that will last a lifetime of playing, nothing else compares. G12M GREENBACK Power rating (W)..................... 25 Sensitivity (db)...................... 97 Magnet weight (oz)................... 35 Frequency range (Hz)............. 75-5000 Resonance frequency, Fs (Hz)............ 75 DC resistance, Re (Ω)................ 6.9 Overall depth (mm).................. 133 Magnet structure diameter (mm)........ 150 Unit weight (kg)..................... 3.6 8
The G12H is another member of the G12 family that really shines. It s the classic rock voice of the s. Listen through your music collection and the sound of the G12H appears so many times through the magical riffs of the great guitar gods. Through the decades the guitarist icons may change, but the one consistency remains in their choice of speaker - the G12H. G12H The G12H provides the ideal solution to those looking for a compromise between the Vintage 30 and the G12M Greenback - for players who need a syrupy, thick and warm tone that still retains a tight bottom end. These speakers have great clarity (without being harsh) when played clean yet they will also pump out the classic Celestion grind when pushed into distortion. Pick attack is vividly articulated and with sustained notes the sound trails off into warm harmonic tones and a blooming feedback. Power rating (W)..................... 30 Sensitivity (db)..................... 100 Voice coil material............round copper Magnet type.....................ceramic Magnet weight (oz)...................50 Frequency range (Hz)..............75-5000 Resonance frequency, Fs (Hz).............75 DC resistance, Re (Ω)................ 6.9 Overall depth (mm).................. 135 Magnet structure diameter (mm)........ 156 Unit weight (kg)..................... 4.7 Originally released in 1978, the G12-80 (affectionately known as the Classic Lead ) is now a vital component in the 4x12 market. The Classic Lead has that special something that lead guitarists dream of - speed, definition and punch along with amazing articulation, particularly on big, distorted sounds. Even with the amp screaming, every note is still sweet, clear and very loud. Amp: Mesa Boogie Dual Rectifier Cab: Mesa Boogie Rectifier 4 x 12" Speakers: 4 x Vintage 30 Players find that the Classic Lead s combination of speed and articulate clarity, with punch, sparkle and a very fluid feel, work well for many styles, from twangy, clean country, where its headroom and clarity are fantastic, through jazz and fusion where the definition of notes is vital to prevent muddiness, to heavy metal where the huge bass presence, dynamic mids and treble bite give great heavy tone without losing the melody. CLASSIC LEAD We can honestly say that this is one of Celestion s most versatile speakers - and a true classic. A true axe hero settles for nothing less! Power rating (W)..................... 80 Sensitivity (db)...................... 99 Magnet weight (oz)................... 50 Frequency range (Hz)............. 80-5000 DC resistance, Re (Ω).................. 7 Overall depth (mm).................. 135 Magnet structure diameter (mm)........ 156 Unit weight (kg)..................... 4.7 11
GENERAL GUITAR LOUDSPEAKERS CONTINUED G12K-100 SUPER 8 Delivering the fantastic Celestion tone with exceptional clarity, this speaker produces a full, smooth yet clean sound, handling the bass end superbly. V12-60 If your style is laid-back and bluesy then this speaker is perfect for you. It features a smooth, sweet, warm sound that is just as suitable for blues and jazz as it is for rock and modern playing styles. Here s a speaker that produces the fantastic Celestion sound at a price that won t hurt your pocket. Ideal for giving new life to small combos and practice amps. Power rating (W).................... 100 Sensitivity (db)...................... 99 Magnet weight (oz)................... 50 Frequency range (Hz)............. 80-5500 DC resistance, Re (Ω)................ 6.8 Power rating (W)..................... 60 Sensitivity (db)...................... 96 Magnet weight (oz)................... 25 Frequency range (Hz)............. -5000 Resonance frequency, Fs (Hz)............ DC resistance, Re (Ω).................. 7 Nominal diameter (")................... 8 Power rating (W)..................... 15 Sensitivity (db)...................... 94 Voice coil diameter (").................. 1 Magnet weight (oz).................... 8 Frequency range (Hz)............ 100-5000 Resonance frequency, Fs (Hz)........... DC resistance, Re (Ω)................ 6.3 Overall depth (mm).................. 135 Magnet structure diameter (mm)........ 156 Unit weight (kg)..................... 4.7 Overall depth (mm).................. 127 Magnet structure diameter (mm)........ 120 Unit weight (kg)..................... 2.7 Diameter (mm)..................... 205 Overall depth (mm)................... 74 Magnet structure diameter (mm)......... Cut-out diameter (mm)............... 185 Mounting slot dimensions (mm)....... 4.5 x 6 Mounting slot PCD (mm).............. 195 Unit weight (kg)..................... 0.6 ROCKET 50 SUPER 65 A warm and resonant sound, exceptionally suited to the blues. Nothing sings quite like it! SEVENTY 80 This is an amazingly versatile all-rounder, equally at home to country and western as it is to heavy rock. Whatever your style, the Rocket 50 is a good choice. The top of its class, this speaker has great sounding bright and glassy trebles. Crank it up and shades of grind start to creep in. This unit gives great distortion sound with tons of midrange. Power rating (W)..................... 50 Sensitivity (db)...................... 95 Voice coil diameter (")............... 1 1 /2 Magnet weight (oz)................... 17 Frequency range (Hz)............. 85-5000 Resonance frequency, Fs (Hz)............ 85 DC resistance, Re (Ω)................ 7.2 Power rating (W)..................... 65 Sensitivity (db)...................... 96 Magnet weight (oz)................... 20 Frequency range (Hz)............. 80-5000 DC resistance, Re (Ω).................. 7 Power rating (W)..................... 80 Magnet weight (oz)................... 30 Frequency range (Hz)............. 80-5000 Resonance frequency, Fs (Hz)............ 95 DC resistance, Re (Ω)................ 7.3 Amp: Line 6 Flextone II XL combo Speakers: 2 x G12 custom Overall depth (mm).................. 122 Magnet structure diameter (mm)........ 100 Unit weight (kg)..................... 2.0 Overall depth (mm).................. 124 Magnet structure diameter (mm)........ 114 Unit weight (kg)..................... 2.2 Overall depth (mm).................. 119 Magnet structure diameter (mm)........ 134 Unit weight (kg)..................... 3.1 TUBE 10 Like the name suggests, this one sounds great when driven by tube amplification. Designed to deliver maximum response and classic tone, this is a powerful speaker. Power rating (W)..................... 30 Sensitivity (db)...................... 96 Voice coil diameter (")............... 1 1 /2 Magnet weight (oz)................... 17 Frequency range (Hz)............. 85-5000 Resonance frequency, Fs (Hz)............ 85 DC resistance, Re (Ω)................ 5.9 Overall depth (mm)................... 99 Magnet structure diameter (mm)........ 100 Cut-out diameter (mm)............... 235 Mounting slot dimensions (mm)........ 5 x 8 Unit weight (kg)..................... 1.5 G12T-100 This speaker is ideally suited to use with high-power or hybrid amplifiers. It voices a modern sound with a big bass presence. Power rating (W).................... 100 Sensitivity (db)...................... 97 Voice coil diameter (").................. 2 Magnet weight (oz)................... 35 Frequency range (Hz)............. 80-5000 DC resistance, Re (Ω)................ 7.4 Overall depth (mm).................. 124 Magnet structure diameter (mm)........ 148 Unit weight (kg)..................... 3.2 12 13
ACOUSTIC GUITAR LOUDSPEAKERS Anyone who plays an electro-acoustic instrument knows that crystal clarity and sweetness of tone are required to create believable acoustic sounds from today s dedicated amplification. Truvox acoustic loudspeakers have been specifically designed to meet these exacting demands. Manufactured from the highest quality materials, they produce a clear, focused sound, with a response guaranteed to suit any acoustic playing style. TRUVOX 0818 Authentic acoustic tone from a compact unit. With a high power rating this speaker can be surprisingly loud. It sounds great in a small combo and has fantastic projection. Nominal diameter (")................... 8 Power rating (W).................... 150 Sensitivity (db)...................... 94 Frequency range (Hz)............. -6000 DC resistance, Re (Ω)............... 5.78 Diameter (mm)..................... 208 Overall depth (mm)................... 95 Cut-out diameter (mm)............... 183 Mounting slot dimensions (mm)..... 9.5 x 5.5 Number of mounting slots............... 8 Mounting slot PCD (mm).............. 196 Unit weight (kg).................... 2.32 TRUVOX 1015 Acting as an extension to your playing style, the 1015 has been crafted to reproduce sound over a wide frequency range and gives a full, rounded acoustic character. Power rating (W)..................... Sensitivity (db)...................... 95 Voice coil diameter (")............... 1 1 /2 Frequency range (Hz)............. 80-6000 DC resistance, Re (Ω)................ 5.9 Overall depth (mm).................. 100 Unit weight (kg)..................... 1.7 Amp:Ashdown Acoustic Radiator 1 Speaker: 1 x Celestion Acoustic TRUVOX 1218 This speaker reproduces tones with extraordinary detail and clarity, picking up every subtle overtone the resonances of an acoustic instrument will create. Power rating (W).................... 100 Sensitivity (db)...................... 96 Frequency range (Hz)............. 60-4500 Resonance frequency, Fs (Hz)............ 60 DC resistance, Re (Ω)................ 5.8 Overall depth (mm).................. 125 Unit weight (kg)..................... 2.7 15
BL15-400 NEO Our flagship bass guitar speaker. With a phenomenal 400 W power rating this model packs a serious punch. Its low resonant frequency ensures that ultra-low tones are handled with perfect control. And with the innovative use of a Neodymium magnet structure, replacing conventional ceramic units, the speaker weighs in at a stunningly low 4.1 kg. The fantastic sensitivity yielded by the Neodymium magnet ensures that volume levels are far in excess of those of conventional units. Handling low frequencies with superb control, rock solid playing tones result, with fat mids and a detailed upper end. Extremely reliable and robust, the BL-400 NEO meets exacting engineering requirements to ensure it will withstand the punishment that modern styles inflict. And the inherent, great Celestion sound means it suits all playing styles. Whether you go for fast finger style jazz, pick bass or a percussive slap technique, this speaker is the ultimate tool for any bass player. Cab: SWR Henry 8 x 8 Speakers: 8 x BG8 custom Nominal diameter (").................. 15 Power rating (W).................... 400 Sensitivity (db)..................... 100 Chassis type....................... Cast Voice coil diameter (").................. 3 Magnet type....................... Neo Frequency range (Hz)............. 50-4000 Resonance frequency, Fs (Hz)............ 48 DC resistance, Re (Ω)............... 5.69 Diameter (mm)..................... 398 Overall depth (mm).................. 160 Cut-out diameter (mm)............... 355 Mounting slot dimensions (mm)........ 5.5 Ø Number of mounting slots............... 8 Mounting slot PCD (mm).............. 378 Unit weight (kg)..................... 4.1 16
BASS GUITAR LOUDSPEAKERS Celestion BL bass guitar loudspeakers offer the bass player sound solutions for all eventualities with a comprehensive range of drive units. The speaker cones are optimised to keep weight to a minimum while maximising on efficiency, and custom designed surrounds feature improved sealing to eliminate air leaks, resulting in enhanced performance. And for those of you who are sick of lugging heavy cabs around, check out the incredible new Neodymium models - maximum sensitivity yet unbelievably light! BL10-100 NEO Able to handle huge power peaks, the BL10-100 articulates dynamic contrasts with exceptional clarity. Power rating (W).................... 100 Magnet type....................... Neo Frequency range (Hz)............. 75-6000 Resonance frequency, Fs (Hz)............ 75 DC resistance, Re (Ω)................ 5.9 Overall depth (mm).................. 117 Unit weight (kg).................... 1.47 BL10-150 A great general purpose loudspeaker for the professional bass player. Its dynamism and response are equally suited to laid-back, finger style jazz or slap-funk. Power rating (W).................... 150 Voice coil diameter (").................. 2 Frequency range (Hz)............. -6000 Resonance frequency, Fs (Hz)............ DC resistance, Re (Ω)................ 5.6 Overall depth (mm).................. Unit weight (kg)..................... 3.7 BL10-150 NEO A speaker of modest power delivering crystal clear, punchy sound. Built to withstand the rigour of all playing styles including slap where the sharp transients demand tough cone construction. Power rating (W).................... 150 Sensitivity (db)...................... 99 Voice coil diameter (").................. 2 Magnet type....................... Neo Frequency range (Hz)............. 75-6000 Resonance frequency, Fs (Hz)............ 75 DC resistance, Re (Ω)................ 5.6 Overall depth (mm).................. 117 Unit weight (kg).................... 1.58 BL10-200 When you need extreme volume from a compact unit, nothing else compares. Delivering bass sound with exceptional fidelity, this speaker is a must for the professional. Power rating (W).................... 200 Voice coil diameter (")............... 2 1 /2 Frequency range (Hz)............. 65-5000 Resonance frequency, Fs (Hz)............ 65 DC resistance, Re (Ω)................ 5.1 Overall depth (mm).................. Unit weight (kg)..................... 3.8 BL10- Our lowest power bass speaker offers great flexibility. Fantastic for use in a small combo yet equally great when loaded in a 4x10" cab - a tight sound without needing a large cabinet. Power rating (W)..................... Sensitivity (db)...................... 95 Voice coil diameter (")............... 1 1 /2 Frequency range (Hz)............. 80-6000 DC resistance, Re (Ω)................ 5.9 Overall depth (mm).................. 100 Unit weight (kg)..................... 1.7 BL12-100 A pleasing compromise between the upper fidelity of a 10" and the really sonorous low end of a larger cone diameter, the BL12-100 offers the best of both. Power rating (W).................... 100 Sensitivity (db)...................... 95 Voice coil diameter (")............... 1 1 /2 Frequency range (Hz)............. 65-5000 Resonance frequency, Fs (Hz)............ 60 DC resistance, Re (Ω)................ 5.8 Overall depth (mm).................. 124 Unit weight (kg).................... 2.35 BL10-100 A speaker which offers a great, controlled low register without losing the punchy mids and bright treble which are important in the modern bass sound. Power rating (W).................... 100 Sensitivity (db)...................... 96 Frequency range (Hz)............. -6500 Resonance frequency, Fs (Hz)............ DC resistance, Re (Ω)................ 5.8 Overall depth (mm).................. 102 Unit weight (kg)..................... 2.4 18 19
BASS GUITAR LOUDSPEAKERS CONTINUED BL15-150 For the players who want a little growl in their sound. Delivers articulate response coupled with fast attack and punchy bottom end. Nominal diameter (").................. 15 Power rating (W).................... 150 Voice coil diameter (").................. 2 Frequency range (Hz)............. 40-4000 Resonance frequency, Fs (Hz)............ 40 DC resistance, Re (Ω)................ 6.3 Diameter (mm)..................... 385 Overall depth (mm).................. 168 Cut-out diameter (mm)............... 351 Mounting slot dimensions (mm)..... 9.2 x 6.2 Number of mounting slots............... 8 Mounting slot PCD (mm).............. 369 Unit weight (kg)..................... 5.0 BL15-250 Flawless response with unparalled tone and presence are the key features of this speaker. A carefully calibrated cone ensures a guaranteed impressive sound. Nominal diameter (").................. 15 Power rating (W).................... 250 Voice coil diameter (")............... 2 1 /2 Frequency range (Hz)............. 40-3000 Resonance frequency, Fs (Hz)............ 40 DC resistance, Re (Ω)................ 5.1 Diameter (mm)..................... 385 Overall depth (mm).................. 153 Cut-out diameter (mm)............... 351 Mounting slot dimensions (mm)..... 9.2 x 6.2 Number of mounting slots............... 8 Mounting slot PCD (mm).............. 369 Unit weight (kg).................... 5.15 Amp: Hughes & Kettner Zentera combo Speakers: 2 x Vintage 30 BL15-300 Fast, articulate and sensitive, the BL15-300 is capable of handling loads of power. Supremely reliable and built to last, it integrates perfectly into your bass stack. Nominal diameter (").................. 15 Power rating (W).................... 300 Voice coil diameter (")............... 2 1 /2 Frequency range (Hz)............. 50-3500 Resonance frequency, Fs (Hz)........... 46.8 DC resistance, Re (Ω)................ 5.6 Diameter (mm)..................... 385 Overall depth (mm).................. 163 Cut-out diameter (mm)............... 352 Mounting slot dimensions (mm)..... 6.2 x 9.2 Number of mounting slots............... 8 Mounting slot PCD (mm).............. 369 Unit weight (kg).................... 4.75 BL15-400 Nothing beats it on power handling. Drive it to the max, enjoy the full visceral measure of some serious earth-shattering lows and make your ear drums bleed! Nominal diameter (").................. 15 Power rating (W).................... 400 Sensitivity (db)...................... 99 Voice coil diameter (").................. 3 Frequency range (Hz)............. 40-4000 Resonance frequency, Fs (Hz)........... 43.4 DC resistance, Re (Ω)............... 5.56 Diameter (mm)..................... 385 Overall depth (mm).................. 163 Cut-out diameter (mm)............... 351 Mounting slot dimensions (mm)..... 9.2 x 6.2 Number of mounting slots............... 8 Mounting slot PCD (mm).............. 369 Unit weight (kg)..................... 7.7 CONVERSION TABLE Symbol Unit Conversion Symbol Unit mm millimetre 1 mm = 0.03937 " " inch kg kilogramme 1 kg = 35.27 oz oz ounce Please note that Celestion adopt a progressive policy and we reserve the right to alter drive unit specifications and/or appearance without prior notice. Although all nominal impedances are rated at 8 ohms, many speakers in our range are available with impedances of 4 and 16 ohms. To find out more, please contact our support team. 20