ENCLOSURES Net Volume Vent diameter cubic feet/liters (qty) inches/mm

1508SPS

Sealed box

Small vented box

Medium vented box

Large vented box

Single Reflex

Bandpass box

1.5 / 42.5

3.0 / 84.9

4.0 / 113.3

5.0 / 141.6

n/a

(2) 4" / 102

(2) 4" / 102

(2) 4" / 102

Sealed 2.25 / 63.7

Vented 1.75 / 49.6 (2) 6" / 152

Vent length inches/mm n/a

6-7/8"/ 175

5" / 127

4-3/8" / 111

7-3/8" / 187

Vb box tuning F3, -3 dB frequency in Hz point in Hz

87 (resonance)

45

43

40

83

72

51

45

41

48 - 138

1508cu

Small vented box

Medium vented box

Large vented box

1508he

Small vented box

Medium vented box

Large vented box

2.0 / 56.6

3.0 / 84.9

4.0 / 113.3

(2) 4" / 102

(2) 4" / 102

(2) 4" / 102

3.0 / 84.9

4.0 / 113.3

5.0 / 141.6

(2) 6" / 152

(2) 6" / 152

(2) 6" / 152

10-5/8" / 270

6-7/8" / 175

5" / 127

7-3/4" / 197

5-1/8" / 130

4-3/8" / 111

47

45

43

60

58

54

53

45

41

60

55

50

1208SPS

Sealed box

Small vented box

Large vented box

0.65 / 18.4

0.8 / 22.6

1.4 / 39.6

n/a

(1) 4"/102

(1) 4"/102 n/a

4-1/2"/ 114

1-7/8"/ 48

106 (resonance)

70

65

105

79

61

REPLACEMENT OF SPEAKER BASKET ASSEMBLY

1. Prior to replacement procedure, clean work area of all metal objects and other debris.

2. With speaker lying face down, remove the three screws on back of magnet structure with 7/16" nut driver.

3.. After screws are removed, lift the magnet structure off the basket frame.

4. Clean the voice coil “gap” before magnet structure is put on new replacement basket. (See illustration.) Fold a piece of masking tape over on itself several times, sticky side out, and insert it into the voice coil “gap.” Run it all the way around the “gap” several times to remove all particles of metal and other trash before magnet structure is put on new replacement basket.

5. Holding magnet structure in slanted position, gently lower the structure down into the basket so that it rests inside the magnet structure counter bore, being sure to align the screw holes, and lower the structure down into place. Insert screws and tighten.

STEP 1 STEP 2

STEP 3 STEP 4

ONE YEAR LIMITED WARRANTY

NOTE: For details, refer to the warranty statement. Copies of this statement may be obtained by contacting Peavey Electronics

Corporation, P.O. Box 2989, Meridian, MS 39305

©2001

®

Features and specifications subject to change without notice.

Peavey Electronics Corporation • 711 A Street • Meridian • MS • 39301

(601) 483-5365 • FAX (601) 486-1278 • www.peavey.com

80301841

Printed in the U.S.A. 5/01

S P E C S

Black

®

BWX

00452830 1208-8sps BWX

00452840 1208-4sps BWX

00452850 1508-8sps BWX

00452860 1508-4sps BWX

00452870 1508-8cu BWX

00457680 1508-8he BWX

INTRODUCTION

The 1508 and 1208 driver series represent a new level of power and performance for Black Widow loudspeakers. Power handling is increased by 40% over other comparable models, along with reduced distortion and higher overall sound quality.

The series includes 12" and 15" models in both 4 and 8 Ohm impedances.

DESIGN

The ’08 BWX series uses a new cone that is a variation on the existing Kevlar ® impregnated cones used on all Black

Widows. The new cone is stronger and tougher, highly water resistant, and has a specially designed surround – a deep-roll accordion design on the 15", and an innovative asymmetrical-M style on the

12" that improves mid-range clarity. The dust cap is also made of the same extremely strong material.

-

Voice coil assemblies on the new drivers use thermoset-insulated aluminum or copper ribbon wire, bonded onto an incredibly durable, heat resistant polyimide composite former. The coil wires are solderless diffusion welded to high-conductivity OFHC copper foil leads, which are embedded inside the former assembly and soldered to the tinsel leads with high temperature silver solder. The solder joint is then coated with a special thermally-conductive silicone adhesive for encapsulation and heat dissipation.

The voice coil assembly is bonded to the

Kevlar cone and new super-tough nylon composite spider using a thermoset epoxy originally developed for attaching nose cones on ICBM missiles –truly an aerospace-grade adhesive. The spider and surround are bonded to the frame with a high strength toughenedcyanoacrylate adhesive, which is also used to bond the dust cap to the cone.

The magnet structure includes subtle changes to its geometry that improve power handling. While it appears the same as the standard structure, and replacement baskets from the ’08 BWX series will fit on standard BW magnet structures, the improved power handling will be compromised if the standard structure is used.

These new drivers also adhere to the familiar features of Black Widow products: cast aluminum frames, replaceable basket assemblies, Rubatex gaskets and high reliability, spring-loaded terminals are all used.

APPLICATIONS

The 1508 and 1208 drivers are excellent choices for a wide range of sound reinforcement, high-level playback, subwoofer, and monitor applications.

The 1508sps driver is an excellent choice for general purpose sound reinforcement, and is available in both 4 and 8 Ohm versions. Enclosure size is reasonable and bass / mid-bass performance is strong. Its versatility includes sealed and bandpass enclosure designs.

The 1508cu produces amazing bass performance in small enclosures, along with flat mid-bass response for an accurate, clean sound quality.

®

Sealed Vented Single Reflex Bandpas

The 1508he is best used as the bottom end of a full range enclosure. It has very high efficiency for superior output in the mid-bass and mid-range. However, for pure subwoofer applications, the 1508sps or 1508cu are better choices.

The 1208sps works well in sealed or vented enclosure designs, and its smooth, extended frequency response makes it an excellent mid-range performer. It is available in 4 and 8 Ohm versions.

Because the 1208sps’s low frequency output is limited, it should be used along with a subwoofer when response below

60 Hz is needed. The best application for the 1208sps is in compact enclosures and very high quality mid-bass/mid-range reproduction at high sound pressure levels.

The 15" drivers can work with crossover points as high as 2.0 kHz but work best below 1.5 kHz. The 12" drivers are usable to 3.5 kHz but perform best below

2.5 kHz.

ENCLOSURES

To assist with the growing interest in home-built enclosure designs, Peavey provides complete parameter data on these drivers as well as several recommended enclosures for each model. This information and much more can be found at www.peavey.com.

Enclosures should be built of best-quality

3/4" marine or other high grade plywood.

Particle board and MDF enclosures can be easily damaged and are not recommended for portable applications, but may be acceptable for permanent installation. If construction plywood must be used, inspect each sheet thoroughly and use at least BC grade.

Use a quality wood glue, fit joints tightly, and add internal bracing to stiffen the panels of the enclosure. Look at commercially designed enclosures for ideas on good brace placement. Use wood screws or a pneumatic nailer to assemble the enclosure during gluing, to maximize joint strength.

Strength of the completed enclosure has a great effect on the bass performance of the finished system. Box panels that aren’t stiff enough will vibrate – cancelling bass produced by the woofer, and creating undesired sounds of their own. If your box vibrates or you don’t think the box panels are stiff enough, add more bracing.

Vents used in the examples require standard Schedule 40 PVC pipe for vent construction. The pipe should be dadoed tightly into the back of the baffle and glued firmly in place with high quality epoxy or high strength industrial grade hot glue. Rough up the outside of the pipe to improve the glue bond.

Be sure to account for the displacement of the vent, bracing, horn (if used) and woofer or your enclosure before building it, or it will be smaller than its intended volume. This can reduce bass output and mis-tune the enclosure.

Line the inside of the enclosure with polyester fiber batting such as quilt stuffing. The batting material should conform to California bedding fire codes.

Attach the batting with spray adhesive or staples, and keep it away from the end of the vent tube where it could be pulled in by air flow. Handles, protective corners, cabinet covering, grille materials and crossovers are available through Peavey

Accessories.

When building a bandpass enclosure, design a panel or door to be removable for access to the woofer. Use foam weather-strip to seal the panel along with enough screws and bracing to prevent leaks and buzzes. Fill the sealed volume loosely with polyester fiber, but leave the vented volume empty. Place the magnet of the woofer in the vented side for improved cooling.

Peavey does not supply hardware required for the manufacturing of flying systems, and recommends that builders should not suspend or fly any enclosure not certified for such applications.

These instructions are a general guideline for design. Proper construction techniques, good planning and common sense will result in a reliable, high quality, high performance system.

Peavey in no way accepts liability for any damage, accidents or injury that may result from construction or use of enclosures using this information.

Features and specifications are subject to change without notice.

PARAMETERS

Thiele-Small parameters for Black

Widow ® 1208 and 1508 drivers follow.

This data is for use in designing enclosures. Numerous software packages are available that use this data to simulate the response of the driver and enclosure together for optimum performance in any application.

PARAMETER DEFINITIONS

Znom: The nominal impedance of the driver in Ohms.

Revc: DC resistance of the driver in

Ohms. Also known as Re.

Sd: The functional radiating surface area of the cone assembly, in meters 2 .

BL: Efficiency of the voice coil and magnet system in Telsa Meters.

Fo: Also known as Fs, the free air resonance of the driver.

Vas: Volume of air having the same compliance (springiness) as the driver’s suspension.

Cms: Restorative force of the driver’s suspension in micrometers/Newton.

Mms: The total mass of the moving parts of the loudspeaker, including the air load, in grams.

Qms: Resonance characteristics of the mechanical factors of the loudspeaker.

Qes: Resonance characteristics of electrical factors of the loudspeaker.

Qts: Resonance characteristics of the electrical and mechanical factors combined together.

Xmax: Distance the cone can move in one direction before the coil begins to leave the magnetic gap.

Le: Inductance of the voice coil in millihenries.

SPL: Typical sound pressure level at

1 Watt, 1 meter.

no: Electrical-to-acoustical conversion efficiency in percent.

Vd: Air displacement of the driver from negative Xmax to positive Xmax, in milliliters.

Pmax: Maximum continuous program power in Watts.

Disp: Volume displaced by the driver inside the cabinet when mounted on its rear flange, in inches 3 .

Kevlar ® is a registered trademark of DuPont.

Rubatex ® is a registered trademark of

Rubatex Corporation.

Nomex ® is a registered trademark of

DuPont.

SPECIFICATIONS

Model Name:

Part #:

Size: inches/mm

Impedance:

Power Capacity:

Sensitivity:

Usable frequency range:

Cone:

Voice coil diam:

Voice coil material:

Net weight:

Driver Parameters

Znom(Ohms)

Revc (Ohms)

Sd (M2)

BL (T/M)

Vas (liters)

Fo, Hz.

Cms (uM/N)

Mms (gm)

Qms

Qes

Qts

Xmax (mm)

Le (mH)

SPL (1W 1m) no (%)

Vd (milliliters)

Pmax (w. pgm.)

Disp in3 / ml

8

5.27

0.084

15.37

185.9

41.9

158.5

77.6

10.357

0.457

0.437

4.7

0.418

96.7

2.9

789

1000

197 / 3229

1508-8sps

00452850

15" / 380 mm nominal

1508sps-4

00452860

15" / 380 mm nominal

Frame OD 15Frame OD 15-

1/4" / 387 mm 1/4" / 387 mm

Bolt circle

14-9/16"

Bolt circle

14-9/16"

370 mm, 8 holes 370 mm, 8 holes

1508-8cu

00452870

15" / 380 mm nominal

Frame OD 15-

1/4" / 387 mm

Bolt circle

14-9/16"

370 mm, 8 holes

1508-8he

00457680

15" / 380 mm nominal

Frame OD 15-

1/4" / 387 mm

Bolt circle

14-9/16"

370 mm, 8 holes

Cutout diameter Cutout diameter Cutout diameter Cutout diameter

14" / 356 mm 14" / 356 mm 14" / 356 mm 14" / 356 mm

1208-8sps

00452830

1208-4sps

00452840

12" / 305 mm nominal

Frame OD 12-

1/4" / 311 mm

12" / 305 mm nominal

Frame OD 12-

1/4" / 311 mm

Bolt circle

11- 5/8"

295 mm, 8 holes

Bolt circle

11- 5/8"

295 mm, 8 holes

Cutout diameter Cutout diameter

10 15/16" / 278 mm 10 15/16" / 278 mm

Depth 4-31/32"

126 mm

8 Ohms

Depth 4-31/32"

126 mm

4 Ohms

Depth 4-31/32"

126 mm

8 Ohms

Depth 4-31/32"

126 mm

8 Ohms

Depth 3-17/32"

90 mm

8 Ohms

Depth 3-17/32"

90mm

4 Ohms

2000 W peak 2000 W peak 2000 W peak 2000 W peak 2000 W peak 2000 W peak

1000 W program 1000 W program 1000 W program 1000 W program 1000 W program 1000 W program

500 W continuous 500 W continuous 500 W continuous 500 W continuous 500 W continuous 500 W continuous per AES 2-1984, per AES 2-1984, per AES 2-1984, per AES 2-1984, per AES 2-1984, per AES 2-1984,

50 Hz - 500 Hz 50 Hz - 500 Hz 50 Hz - 500 Hz 50 Hz - 500 Hz 65 Hz - 650 Hz 65 Hz - 650 Hz

96.7 dB 1 Watt / 97.5 dB 1 Watt / 97.2 dB 1 Watt / 100.3 dB 1 Watt / 96.9 dB 1 watt / 96.6 dB 1 watt /

1 meter 1 meter 1 meter 1 meter 1 meter 1 meter

35 Hz ~ 2 kHz 35 Hz ~ 2 kHz

Kevlar ® impregnated cellulose

Kevlar impregnated cellulose

4.0" / 100 mm 4.0" / 100 mm

35 Hz ~ 2 kHz

Kevlar impregnated cellulose

4.0" / 100 mm

40 Hz ~ 2 kHz

Kevlar impregnated cellulose

4.0" / 100 mm

Aluminum ribbon Aluminum ribbon wire wire

Copper ribbon wire

Aluminum ribbon wire

Polyimideimpregnated fiberglass former

Nomex ®

Polyimideimpregnated fiberglass former

Polyimideimpregnated fiberglass former stiffener Nomex stiffener Nomex stiffener

Polyimideimpregnated fiberglass former

Nomex stiffener

Solderless Solderless Solderless Solderless diffusion welded diffusion welded diffusion welded diffusion welded

OFHC copper leads

OFHC copper leads

OFHC copper leads

OFHC copper leads

17 lbs. / 7.7 kg 17 lbs. / 7.7 kg 17 lbs. / 7.7 kg 17 lbs. / 7.7 kg

50 Hz ~ 3.5 kHz 50 Hz ~ 3.5 kHz

Kevlar impregnated cellulose

4.0" / 100 mm

Kevlar impregnated cellulose

4.0" / 100 mm

Aluminum ribbon wire

Polyimideimpregnated fiberglass former

Nomex stiffener

Solderless diffusion welded

OFHC copper leads

16 lbs. / 7.3 kg

Aluminum ribbon wire

Polyimideimpregnated fiberglass former

Nomex stiffener

Solderless diffusion welded

OFHC copper leads

16 lbs. / 7.3 kg

4

3.30

0.084

12.72

163.6

45.9

163.3

73.5

11.197

0.433

0.417

2.3

0.211

97.5

3.6

386

1000

197 / 3229

8

5.91

0.084

20.84

199.6

36.7

199.2

93.9

9.314

0.295

0.286

4.7

0.583

97.2

3.3

789

1000

197 / 3229

8

5.32

0.084

16.04

182.4

51.2

182

52.9

10.604

0.352

0.341

1.9

0.336

100.3

6.7

319

1000

197 / 3229

8

5.43

0.052

15.13

54.6

56.1

142.2

50.7

9.513

0.448

0.428

4.7

0.359

96.9

3.1

488

1000

109 / 1797

4

3.47

0.052

14.09

66.2

55.4

172.5

47.9

7.085

0.311

0.298

2.3

0.186

96.6

2.9

302

1000

109 / 1797

SUGGESTED ENCLOSURES

For those who want to build their own enclosures, but don’t want to go through the design process using driver parameters, we provide the following optimized designs:

FOR 1508-4/8sps:

Sealed enclosure

May be preferred for stage monitors to control boominess and low frequency feedback on stage. F3 is 73 Hz.

Small vented enclosure

Excellent performance for compact, general purpose use. Warm mid-bass response. F3 is 51 Hz.

Medium vented enclosure

Terrific compromise of bass performance and enclosure size. Warm mid-bass response. F3 is 45 Hz.

Large vented enclosure

Big box, big bass! Great response as a subwoofer or the bottom end of a large multi-way enclosure design. F3 is 41 Hz.

Single reflex bandpass enclosure

Special enclosure design that uses the enclosure as an acoustic filter for shaped response. Great choice for a compact subwoofer system. Response is 48 Hz – 138 Hz.

FOR 1508-8cu:

Small vented enclosure

An incredibly small enclosure with outstanding bass performance for its size. F3 is 53 Hz.

Medium vented enclosure

Small box with powerful bass and predictable, flat response down to an F3 of 45 Hz.

Large vented enclosure

Strong, flat response with bass extension to an F3 of 41 Hz. Deep, predictable bass quality for great subwoofer and multi-way system performance.

FOR 1508-8he:

Small vented enclosure

Small box, big voice. Very high efficiency and good bass performance in a small enclosure. F3 is 60 Hz.

Medium vented enclosure

Super-high efficiency in a popular enclosure size. F3 is 55 Hz. Great choice for use in a full-range system.

Large vented enclosure

Big and loud! Super efficiency and strong bass performance to an F3 of 50 Hz. However, for subwoofer-only use the sps and cu versions which are better performers.

FOR 1208-4/8sps:

Sealed enclosure

Excellent choice for a dedicated mid-bass/mid-range in a multiway system, or stage monitor. F3 is 105 Hz.

Small vented enclosure

Very small system with excellent voice range perforance. Great choice as the mid-range of a sub/satellite system. F3 is 79 Hz. Also good for use in a stage monitor.

Large vented enclosure

Still not all that large, with very usable bass response. Great for a compact, 2-way box. F3 is 61 Hz.

1508sps

1 5 0 8 s p s s e a l e d b o x

1 5 0 8 s p s s m a l l v e n t e d b o x

1 5 0 8 s p s m e d i u m v e n t e d b o x

1 5 0 8 s p s l a r g e v e n t e d b o x

1 5 0 8 s p s s i n g l e r e f l e x b a n d p a s s

1 0 0

S P L , d B

9 5

9 0

8 5

8 0

7 5

7 0

6 5

6 0

F r e q u e n c y , H z 5 0 1 0 0 Hz 5 0 0 1 K

1508he

8 0

7 5

7 0

6 5

1 0 5

S P L , d B

1 0 0

9 5

9 0

8 5

1 5 0 8 h e s m a l l v e n t e d b o x

1 5 0 8 h e m e d i u m v e n t e d b o x

1 5 0 8 h e l a r g e v e n t e d b o x

5 0 1 0 0 Hz 5 0 0 1 K

1508-8cu

8 0

7 5

7 0

1 0 0

S P L , d B

9 5

9 0

8 5

6 5

6 0

1208sps

7 5

7 0

6 5

9 0

8 5

8 0

1 0 5

S P L , d B

1 0 0

9 5

1 5 0 8 - 8 c u s m a l l v e n t e d b o x

1 5 0 8 - 8 c u m e d i u m v e n t e d b o x

1 5 0 8 - 8 c u l a r g e v e n t e d b o x

5 0 1 0 0 Hz 5 0 0 1 K

1 2 0 8 s p s s e a l e d b o x

1 2 0 8 s p s s m a l l v e n t e d b o x

1 2 0 8 s p s l a r g e v e n t e d b o x