PD-H2-118S 18” HORN LOADED SUBWOOFER

PD-H2-118S - 18” HORN LOADED SUBWOOFERSUITABLE FOR USE WITH: PD.185C003

WWW.PRECISION-DEVICES.COM

© 2017, Precision Devices International Ltd. We operate a policy of continuous research and development and as such published specifications are subject to change without notice. Plans are provided free of charge for non-commercial purposes. For commercial licensing please contact us at [email protected] or via our website www.precision-devices.com WWW.PRECISION-DEVICES.COM

MATERIALWe recommend the use of a multi-layer, void free, exterior grade birch ply. Thickness should be at least 18mm (3/4”) and 24mm (1”) for larger enclosures. Other kinds of wood (e.g. Pine, blackboard and hardwoods) may be used for construction, but the resulting strength and acoustic properties will be affected. As a cheaper option Medium Density Fibreboard (MDF) or flooring-grade chipboard can be used where the cabinet is to be permanently installed in a dry situation.

METHOD / TECHNIQUEWe recommend lapped joints, however simple butt joints are adequate, both types of joint should be airtight. All joints should be bonded with a sufficient bead of glue to ensure good adhesion (PVA or PU glue is suitable) and screwed at 200mm (8”) centres with 4.2mm or 4.8mm (No.8 or 10 gauge) x 60mm (2 3/8”) screws. A high quality wood screw should be used. Make sure there’s a clearance hole in the wood that the screw head bears down on, so the pieces of wood are pulled fully together. To curtail major resonances (e.g. spurious buzzing noises), major panels should be stiffened with battens; off-cuts are often used, however we recommend purpose made braces for optimum performance. These should be glued and screwed into place. The arrangement must be consistent (between like cabinets) to ensure performance remains the same. To reduce panel resonance further a larger number of smaller braces can be used.

HOLE CUTTINGFixing holes to mount the loudspeaker may be defined using the holes in the driver frame. The loudspeaker is then mounted using bolts and ‘T’ nuts supplied. All other holes for connectors, handles, etc should be cut before any other parts are mounted.

PASSIVE CROSSOVERSUnless otherwise stated, cabinet designs are passive units, and adequate external signal processing arrangements should be made to filter out signals.

Where used, crossover networks should be mounted for ease of access, but at the same time they should be kept away from the immediate vicinity of the driver(s)’ magnets. Crossover PCBs need to be firmly secured; buzzing or rattling will impair sound quality. If a crossover breaks loose in transit, the crossover and/or drivers may be damaged. Self-tapping screws provide the suitable fixing, taking care to ensure a tight fit. Screw cups spread out the pressure exerted on the PCB, reducing the chances of damage if the cabinet is dropped from a height. Rubber grommets can be used to space the crossover PCB off the cabinet wall, and can protect the PCB/components from the resulting shock.

CONNECTORSSome connectors leak air. Be sure to check the connectors are suitable for the application intended.

INTERNAL WIRINGWiring should be clearly coded so correct polarity is visible. We recommend red and black for hot (+ve) and cold (-ve) respectively. When the enclosure is first tested, use a battery or polarity (‘phase’)-checker set to ensure that the driver(s)’ cones move forwards (outwards) when the hot (+ve) input terminal is driven positive.

ACOUSTIC TREATMENTThe inside of the enclosure should be lagged with an absorptive material, to dampen internal reflections and standing waves. Recommended materials are BAF or a similar cushion filler. For best results staple the wadding to the cabinet walls. The amount of wadding will affect the acoustic performance of the enclosure and is best adjusted to give the desired response. Plans will indicate where any wadding is best positioned.

DRIVE UNITSBefore mounting the drive units, the internal wing, connectors (and passive crossovers where applicable) should be fitted. Make sure the cabinet interior is clear and free from swarf and waste. Drive units are fitted with a foam sealing strip to provide airtight conditions when bolted down. Make sure this is in place and intact before fixing the driver. The driver’s fixing bolts should be tightened in stages, in a diagonal sequence to avoid possible deformation of the chassis or baffle.

Further information about our drive units can be found at http://www.precision-devices.com

ENCLOSURE CONSTRUCTION HINTS & TIPS

© 2017, Precision Devices International Ltd. We operate a policy of continuous research and development and as such published specifications are subject to change without notice. Plans are provided free of charge for non-commercial purposes. For commercial licensing please contact us at [email protected] or via our website www.precision-devices.com WWW.PRECISION-DEVICES.COM

SUB BASS DRIVERPD.185C003

THIELE SMALL PARAMETERS (8Ω MODEL)

SPECIFICATIONSNominal Diameter 18” / 457.2 mm

Voice Coil Diameter 5.0” / 127 mm

Power Rating 1000 W (A.E.S.)

Peak Power (6dB Crest Factor) 4000 W (A.E.S.)

Sensitivity (1w - 1m) 99 dB

Frequency Range 30 Hz - 500 Hz

Recommended Enclosure Vol. 90 - 250 Litres

Resonance 33 Hz

Voice Coil Winding Depth 28.00 mm / 1.10”

Magnet Gap Depth 12.0 mm / 0.47”

Flux Density 1.25 Tesla

Magnet Material Y35 Ferrite

Voice Coil MaterialCopper (Inside / outside winding)

MOUNTING INFORMATIONChassis Shoulder Diameter 415 mm

Outer Bolt Circle 6x M6 on 456 mm PCD

Fs 33 Hz

Re 5.4 Ω

Qms 10.60

Qes 0.229

Qts 0.240

Le (@ 1 kHz) 2.80 mH

Le (@ 10 kHz) 1.360 mH

Vas 224 Litres

Mms 197.00 g

Sd 1164 cm2

Cms 118.00 μm/N

BL 31.50 T/m

Xmax 11.00 mm

Vd 1.274 Litres

Ref. Efficiency 3.40%

EBP 144.10 Hz

COMPONENTS & SPECIFICATIONS

Full driver specifications can be found at: http://www.precision-devices.com

A wide range of speaker cabinet accessories

are available from specialist suppliers. Wheels,

grilles, corner protectors, paint, connectors

and handles should be carefully fitted to

avoid air leaks or weakening the enclosure.

Important Note: For optimum performance

we recommend using the enclosure in

multiples of no less than two.

• High Performance, 1x 18”, Horn-loaded

Subwoofer System.

• Optimised for PD.185C003.

+120

+110

+100

+90

+80

+70

+60

+50

dB (1

W-1m

)

20 50 100 200 500 1k 2k 5k 10k 20k(Hz)

200

100

50

20

10

5

2

1

Ohm

s (Ω)

20 50 100 200 500 1k 2k 5k 10k 20k(Hz)

FREQUENCY RESPONSE AND IMPEDANCE CHARTS

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© 2017, Precision Devices International Ltd. We operate a policy of continuous research and development and as such published specifications are subject to change without notice. Plans are provided free of charge for non-commercial purposes. For commercial licensing please contact us at [email protected] or via our website www.precision-devices.com

PD-H2-118SREVISION: SHEET:SCALE: DIMENSIONS:

TOLERANCE LINEAR ± 0.4, HOLES +0.1/-0.0, NONE - CUMULATIVE

PROJECT: PART:

NOTES:

1.0 4 OF 24N/A MMWWW.PRECISION-DEVICES.COM

H2-Cabinet Design for PD-185C03

DRAWN

NAME

TITLE:

DWG NO.

H2-118S. Cabinet and Driver

Plans are provided free of charge for non-commercial purposes. For commercial licensing please contact us at [email protected] or via our website www.precision-devices.comwww.precision-devices.com

MM1.0NOTES:

PART:PROJECT:

LATIVE - CUMUONE +0.1/-0.0, NOLESH ± 0.4, INEAR LOLERANCET

DIMENSIONS:SCALE: SHEET:REVISION:

PD-H2-118S

021117

TITLE:

Precision Devices International Ltd. We operate a policy of continuous research and development and as such published specifications are subject to change without notice.

Cabinet Construction Detail

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PROJECT: PART:

NOTES:


H2-Cabinet Design for PD-185C03

DRAWN

NAME

TITLE:

DWG NO.

H2-118S. Cabinet and Driver


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

021117

TITLE:

Precision Devices International Ltd. We operate a policy of continuous research and development and as such published specifications are subject to change without notice.DRAWN

NAME

TITLE:

DWG NO.

H2-118S. Cabinet and Driver 1 1


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:

Precision Devices International Ltd. We operate a policy of continuous research and development and as such published specifications are subject to change without notice.

Driver Mounting Configuration

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PROJECT: PART:

NOTES:


1

2

3

4

5

6

7

8

9

10

11

12

15

13

Parts Key

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PROJECT: PART:

NOTES:



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PROJECT: PART:

NOTES:


Acoustic Wadding Placement

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PROJECT: PART:

NOTES:


823

810

135°

18

55

44°

355

17.74°

515

102.88°

339

90°

36

18 83.63

663

18

810

10

74.

65°

195.05

DRAWN

NAME

TITLE:

DWG NO.

H2-118S SIDE


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

021117

TITLE:

Precision Devices International Ltd. We operate a policy of continuous research and development and as such published speci�cations are subject to change without notice.

1. Right Side Panel

18mm Ply.

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PROJECT: PART:

NOTES:


823

810

10 18

55

355

515

44°

17.74° 102.88°

663

135° 18

90°

339

18

83.63

36

DRAWN

NAME

TITLE:

DWG NO.

H2-118S SIDE 2


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


2. Left Side Panel

18mm Ply.

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PROJECT: PART:

NOTES:


836

10

590

560

280

A

A

560

18

18

5

9

SECTION A-A SCALE 1 : 5

DRAWN

NAME

TITLE:

DWG NO.

H2-118S TOP


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


3. Top Panel

18mm Ply.

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PROJECT: PART:

NOTES:


836 5

60

150

R10

250

470

18

96.50

808

18

19

692.50

10 18

96.50 18

808

19 692.50

5

20

290

510

105 80.50

R30

105

10

5 1

05

105

AA

B

SECTION A-A

9 30

DETAIL B SCALE 1 : 2

DRAWN

NAME

TITLE:

DWG NO.

H2-118S BOTTOM .1


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


4. Bottom Panel

18mm Ply.

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PROJECT: PART:

NOTES:


560

810

70

110

R10

7

0

280

148

217

.50

18

18 18

Prodosed connector plate position.Dimensions are arbitary

18 5

DRAWN

NAME

TITLE:

DWG NO.

H2-118S BACK


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


5. Back Panel

18mm Ply.

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PROJECT: PART:

NOTES:


6. Back Brace

435

74.65°

139

5

23.34°

44.48°

534

DRAWN

NAME

TITLE:

DWG NO.

H2-118S back brace


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


18mm Ply.

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PROJECT: PART:

NOTES:


7. Corner Brace

212

82

534

18

176

45°

212

45°

A

18

5

DETAIL A SCALE 1 : 1

DRAWN

NAME

TITLE:

DWG NO.

HS2-CORNER-BRACE 1


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


18mm Ply.

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PROJECT: PART:

NOTES:


8. Horn Brace 1

145

534

A

145

75.65°

18

18 5


DRAWN

NAME

TITLE:

DWG NO.

HS2-HORN-BRACE 1


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


18mm Ply.

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PROJECT: PART:

NOTES:


9. Horn Brace 2

762

.19

44.03°

303

.16

17.

74°

453

.51

458

.46 467

.19

100

380

100 100

100

260

100

R48

308

.75

50

A

R9 Radius applied to edge onboth sides.

102

.88°

18.46

118

.23°


DRAWN

NAME

TITLE:

DWG NO.

HS2-HORN-BRACE 2


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

021117

TITLE:

Precision Devices International Ltd. We operate a policy of continuous research and development and as such published speci�cations are subject to change without notice. 18mm Ply.

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PROJECT: PART:

NOTES:


10. Baffle Slot Port

534

524

.94

534

R207

385.87

150

264

18

189

534

524

.94

77.12°

74.65° 1

8

A

18 5


DRAWN

NAME

TITLE:

DWG NO.

H2-118S Gsket Slot


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


18mm Ply.

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PROJECT: PART:

NOTES:


11. Horn Section 1

18

73.

62

55

73.

62

55

534

18

A

A

5

SECTION A-A

SCALE 1 : 1

DRAWN

NAME

TITLE:

DWG NO.

HS-HORN-1


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


18mm Ply.

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PROJECT: PART:

NOTES:


12. Horn Section 2

391

.35

534

18

267

18

534

18

5 258

18

391

.35

44°

99°

407

.17

DRAWN

NAME

TITLE:

DWG NO.

HS2-HORN-2


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

021117

TITLE:

Precision Devices International Ltd. We operate a policy of continuous research and development and as such published speci�cations are subject to change without notice. 18mm Ply.

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PROJECT: PART:

NOTES:


13. Horn Section 3

319.77

534

534

18

5

A

319.77

18

77° 99°

5 18 DETAIL A

SCALE 1 : 1

DRAWN

NAME

TITLE:

DWG NO.

HS2-HORN-3


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


18mm Ply.

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PROJECT: PART:

NOTES:


14. Driver Mounting Baffle

492

.33

501

.38

534

41

4

15°

45

6

241

.47

18mm Recess x 3mm Deep to take M8 T-NUT

X 6 M8 T-NUT equispaced on 456mm PCD

492

.33

77.12°

501

.38

74.

65°

DRAWN

NAME

TITLE:

DWG NO.

H2-118S Speaker Gasket


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

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TITLE:


18mm Ply.

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PROJECT: PART:

NOTES:


15. Driver Access Panel

286

506

R28

10

80.50 105

105

105

105

105

266

286

18

19

9

248

286 5

06

19

R9

468

DRAWN

NAME

TITLE:

DWG NO.

HS2-118s door


MM1.0NOTES:

PART:PROJECT:



PD-H2-118S

021117

TITLE:

Precision Devices International Ltd. We operate a policy of continuous research and development and as such published speci�cations are subject to change without notice.18mm Ply.

PD-H2-118S 18” HORN LOADED SUBWOOFER

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Transcript of PD-H2-118S 18” HORN LOADED SUBWOOFER