Infinity Prelude MTS Center User manual

Technical Manual

Prelude MTS Center

ACOUSTIC & ELECTRICAL SPECIFICATIONS:

• Nominal Impedance 4 ohms

• Max Amp Power 500 watts*

• Frequency Response 80 Hz - 22kHz (±3dB)

100 Hz - 20kHz (±1.5dB)

• Sensitivity 89 dB (1 watt @ 1 meter)

• Crossover Frequency 300 Hz, 2000 Hz

SYSTEM COMPONENTS:

• Enclosure Prelude MTS Center (Not for sale)

• Grille 335230-002

• Low Frequency (2) 5¹⁄₄”(133mm) C.M.M.D.

Transducer Neodymium Shielded (335337-001)

DC Resistance 5.0 ohms ±10%

• Mid Frequency Transducer 3¹⁄₂” (89mm) C.M.M.D. Neodymium

Shielded (335224-001)

DC Resistance 4.6 ohms ±10%

• High Frequency 1” (25mm) C.M.M.D. Neodymium

Transducer Shielded (335225-001)

DC Resistance 3.4 ohms ±10%

• Crossover Network 335241-001

AURAL SWEEP TEST SPECIFICATIONS:

• A. System Aural Sweep Test 6.0V Input 80 Hz to 22 kHz

• B. L.F. Aural Sweep Test 6.0V Input 80 Hz to 500 kHz

• C. M.F. Aural Sweep Test 4.0V Input 100 Hz to 3 kHz

• D. H.F. Aural Sweep Test 2.83V Input 2 kHz to 22 kHz

PHYSICAL SPECIFICATIONS:

• Enclosure dimensions: 6¹⁄₂” x 23” x 7⁵⁄₈” (H x W x D)

165mm x 584mm x 194mm

• Weight 21¹⁄₄ lbs. /9.64kg

WARRANTY:

• Refer to Warranty Statement packed with each product.

* The maximum recommended amplifier power rating will ensure proper system

headroom to allow for occasional peaks. We do not recommend sustained

operation at these maximum power levels.

Owner's Manual

335060-003

Stand Owner's Manual

332146-004

Warranty Card

335841-001

Survey Card

335868-002

OWNER'S

MANUAL

Upper Foam

335857-001

Bump-on Feet Set

330104-001

Lower Foam

335858-001

Fiber Cloth

(2pcs.)

Outer Carton

335237-001

Stand

335844-001

Grille

335230-002

PACKAGING

11/01

Infinity Systems, Inc. 250 Crossways Park Dr., Woodbury, New York 11797

Prelude MTS Center

Driver

High Frequency

335225-001

Driver

Mid.Frequency

335224-001

Drivers (2)

Low Frequency

335337-001

Yellow/

Black

White/

Black

Green/

Black

Green/

Black

Green

White

Yellow

Crossover Networks

335241-001

– +

Binding Post

(Red)

335358-002

Binding Post

(Black)

335358-001

L.F.

M.F.

H.F.

250 +

250

205

–

205

–

205 –

205

–

110

12" GREEN

WHITE

WHITE/BLK

18" YELLOW

18' YELLOW/BLK

18" GREEN

12" GREEN/BLK

18" GREEN/BLK

+IN

–IN

INPUT

RED

BLACK

1000µF

100V

150µF

100V

10.0µF

100V

Jumper

w/18AWG

bus Wire

1.0µF,100V

47µF

100V L1

4.70mH

8.0µF, 100V

3.0µF

100V

10.0µF

100V

1.20

0.27

270µF

100V

100µF

100V

18µF

100V

0.073mH

3.30mH

.90mH

2.20mH

4.7

3.90

5.60ohm

25W

4.00 ohm

25W

2.70ohm

25W

5.60ohm

10W

1.60ohm, 26W

2.70ohm

25W

Prelude MTS Center Schematic

WIRING DIAGRAM

Screws (8)

#8-32 x ¹⁄₂"

FPH BLK

901901-008

Screws (8)

#8-32 x ¹⁄₂"

PPH BLK

900201-008

Screws (4)

#4-40 x ¹⁄₂" PPH BLK

905501-008

Screws (2)

#10-32 x .875"

PPH BLK

900401-014

Screws (4)

#6-32 x 1.5"

PPH BLK

900301-024

Woofers (2)

335337-001

Front Baffle

Gasket

335356 -002

Tweeter

335225-001

End Cap (2)

335044-001

End Cap

Gasket (2)

335354-001

Network (2)

335241-001

Network (2)

335241-001

Grille

335230-002

Binding Post

(Red)

335358-002

Prelude Center

(Not for Sale)

Binding Post

(Black)

335358-001

Screws (4)

#8-32 x ¹⁄₂" PPH BLK

900201-008

Screws (8)

#¹⁄₄ -20 x 1.5" PPH BLK

908701-024

Screws (4)

#8-18 x ¹⁄₂"

FPH BLK

908801-008

Mid-Range

335224-001 Mid-Range

Cup Gasket

335705-001

Mid-Range

Cup

335226-002

Grille retainer (8)

333249-003

Front Baffle

335236-001

Stand

335844-001

Knock-out

Seal (4)

330068-001

Terminal Cup

335369-001

Prelude MTS Center

11/01

Infinity Systems, Inc. 250 Crossways Park Dr., Woodbury, New York 11797

EXPLODED VIEW

Prelude MTS Center

To Service the Prelude MTS Center

1) Lay the loudspeaker down on a padded, level surface; remove

the grille.

2) Extract all (8) rubber grille retainers; this can be accomplished by

carefully pulling them out of their cavities with long-nosed pliers or

similar tool.

3) Remove the (8) Phillips screws that are now exposed.

4) Carefully lift the fully loaded baffle off the cabinet.

5) To service the binding posts or terminal cup, remove the (4) Phillips

screws that hold the cup to the rear cabinet. NOTE: Removal of this

cup alone only allows access to the binding posts or terminal cup.

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