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KEF iQ3 Service Manual

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IQ series

Service manual

IQ

3

REVISION 2.0 04-05-2006

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Table of Content

System Specifications 2

Woofer Specifications 2

Tweeter Specifications 2

Schematic Diagram/ Exploded View of Crossover 4

Exploded View of Cabinet 5

Exploded View of Packaging 6

System Frequency Response Curve 7

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2

System Specifications

Freque ncy Response 45~ 25K Hz

Sensitivity 89dB @1W/m

Nominal Rating 15~120W

Dimension (W x D x H) 220x327x365mm (With Grille)

Net Weight 6.5kg / pcs

Gross Weight 14.8kg / pair

Woofer Specifications

Rated Impedance 4+/-0.8 ohms at 1V 300 Hz

Sweep Test Sine Wave 5V at 20~20K Hz

Resonant Frequency (Fo) 55 +/-20%Hz at 1V

Sensitivity 90+/-2 dB/W/m

Frequency Response Fo - 8K Hz

Rated Power Input 50W

Power Test 50W RMS/Channel with Q1 Xover

(The rated power is verified by performing power handling test by feeding rated output with IEC268-5 for 4 hours)

Heat Test 70 oC 25~50% R.H. 8 hours

Humidity Test 40 oC 90~95%R.H. 8 hours

Main Magnet Ø80 x Ø40x 18mm Ferrite

Backing magnet Ø70x Ø32 x 10mm Ferrite

Voice Coil Bobbin Material kapton

Cone Material PP Cone

Surround Material Rubber

Tweeter Specifications

Rated Impedance 3 +/- 0.6 ohms at 1V 3K Hz

Sweep Test Sine Wave 1V at 1K~20K Hz

Sensitivity 86dB/W/m

Frequency Response Fo--18K Hz

Rated Power Input 50W

Power Test 50W RMS/Channel with iQ1 Xover

(The rated power is verified by performing power handling test by feeding rated

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output with IEC268-5 for 4 hours)

Heat Test 70 oC 25~50% R.H. 8 hours

Humidity Test 40 oC 90~95% R.H. 8 hours

Voice Coil Bobbin Material Kapton

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4

Schematic Diagram of Crossover/ Exploded View of Crossover

1.2ohm 5W

0.125

6uF±5% DF3 % 15uF ±10% DF3 %

GP Electronics (Huizhou) Co. Ltd. Industrial Development Zone, Huizhou,Guangdong,China No.9, Le Jin West Road, Zhong Kai Hi-Tech.

HIGH INPUT LOW INPUT

1.1

16uF DF10%

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Exploded View of Cabinet

1419-0391-0 CABINET FOR IQ3 CALVADOS C VINYL

1419-0392-0 CABINET FOR IQ3 D386SR CRYSTAL PE

1419-0394-0 CABINET FOR IQ3 D426SR AMATI PC

4153-0461-0 ACOUSTIC WOOL 200*600*30

FCD92C/4C

GP Electronics (Huizhou) Co. Ltd.

No.9, Le Jin West Road, Zhong Kai Hi-Tech.

Huizhou,Guangdong,China Industrial Development Zone,

4149-7131+0 EVA GASKET IQ9 TERMINAL T=1.5MM

1.0 EA

2600-4008-1007 FLAT WASHER 4.2MM*10MM*0

3.0 EA

4149-7021-0 FOAM GASKET IQ3 T=5MM

1.0 EA 4153-3381-0.V EVA GASKET 3*515 2 D.4 Remove HF protect label Aug/05/05 Aug/05/05 1.0 EA

3000-8006-0 IQ3 MODEL LABEL SP350

1.0 EA 7 9 8 6 5 4 3 2 1 IQ3 FCD90C/1C A4 NTS peng yuejun IQ3 3.0 EA

2912-3516-3000 OVAL COUNTERSUNK HEAD

XOVER-FCD90C CROSSOVER FOR IQ3

EVA GASKET 50*250*T1.5

4153-3642-0

4153-3591-0 FOAM GASKET D161*D143*T0.8 4124-0180-0 TERMINAL PANEL FOR IQ3 3000-8902-0 MADE IN CHINA LABEL 4153-4771-1 PORT TUBE REAR PART 4153-0421-0 LUXBOND-CSC 330*240*30MM 3000-6333-0 BARCODE S/N LABEL 1422-9030-0 FAIRING BLACK FOR IQ3 1419-0390-0 CABINET FOR IQ3 BLACK ASH VINYL 2900-4015-3000 MA SCREW 4*15 6.8MM BK/R FCCW0C SP1535 6.5" 4OHM UNI-Q

1.0 EA

1.0 EA 1.0 EA 2.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 3.0 EA 1.0 EA

4158-6310-0 GRILLE ASSY BLACK FOR IQ3 2150-5781-0 11MM BADGE FOR Q SERIES 4160-0000-0 TRIM/PORT BLACK FOR IQ3 2150-5911-0 KEF BADGE ON BAFFLE 13MM 2918-4025-3400 ME SCREW ALLEN HARD 4154-2451-0 GRILLE SOCKET FOR Q PART NO.

DESCRIPTION 1.0 EA 4.0 EA 1.0 EA 1.0 EA 1.0 EA 5.0 EA QTY.          Drawing Release 1 Apr/10/05 21 19 18 17 16 15 14 13 12 11 10 ITEM

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6

Exploded View of Packaging

4

3

1 2

DOCUMENT BAG ZIPLOCK FOR GK-1114

4153-0611-0 FOAM PLUG FOR Q1

3000-8064+0 UPC LABEL-IQ3 BK ASH 145B-1441-0 4153-7191-0 FOOT 3M SJ-5012 BLACK 4301-6033-1 WARRANTY CARD FOR Q95C.2

POLYFOAM FOR IQ3

1490-8933-0 1497-5082-0 PO BAG FOR Q1 (750*530*0.04) IQ3 CAB-ASSY 5 FCD90C/1C JUL/22/05 PENG YUEJUN 11 10 8 9 7 6 A4 NTS IQ3-PACK PACKAGING DRAWING 1 1 1 13 12 FCD92C/4C

3000-8065+0 UPC - IQ3 DARK APPLE

3000-8066+0 UPC LABEL FOR IQ3 MAPLE

3000-8067+0 UPC-IQ3 AMERICAN WALNUT

.V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V

IQ3 CABINET ASSY

CARTON BOX FOR IQ3

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