KEF iQ3 Service Manual

IQ series Service manual

IQ3 REVISION 2.0 04-05-2006

2-WAY FLOORSTAND SPEAKER

IQ 3

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

System Impedance Curve

8

1

IQ 3 System Specifications Freque ncy Response Sensitivity Nominal Rating Dimension (W x D x H) Net Weight Gross Weight

45~ 25K Hz 89dB @1W/m 15~120W 220x327x365mm (With Grille) 6.5kg / pcs 14.8kg / pair

Woofer Specifications Rated Impedance Sweep Test Resonant Frequency (Fo) Sensitivity Frequency Response Rated Power Input Power Test

Heat Test Humidity Test Main Magnet Backing magnet Voice Coil Bobbin Material Cone Material Surround Material

4+/-0.8 ohms at 1V 300 Hz Sine Wave 5V at 20~20K Hz 55 +/-20%Hz at 1V 90+/-2 dB/W/m Fo - 8K Hz 50W 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) 70 oC 25~50% R.H. 8 hours 40 oC 90~95%R.H. 8 hours Ø80 x Ø40x 18mm Ferrite Ø70x Ø32 x 10mm Ferrite kapton PP Cone Rubber

Tweeter Specifications Rated Impedance Sweep Test Sensitivity Frequency Response Rated Power Input Power Test

3 +/- 0.6 ohms at 1V 3K Hz Sine Wave 1V at 1K~20K Hz 86dB/W/m Fo--18K Hz 50W 50W RMS/Channel with iQ1 Xover (The rated power is verified by performing power handling test by feeding rated 2

IQ 3 Heat Test Humidity Test Voice Coil Bobbin Material Dome Material

output with IEC268-5 for 4 hours) 70 oC 25~50% R.H. 8 hours 40 oC 90~95% R.H. 8 hours Kapton Aluminum

3

IQ 3 Schematic Diagram of Crossover/ Exploded View of Crossover

１．１

１６ｕＦ　ＤＦ１０％

ＬＯＷ　ＩＮＰＵＴ

６．８ｏｈｍ± ５％　５Ｗ

６ｕＦ±５％　ＤＦ３ ％

１５ｕＦ ±１０％　ＤＦ３ ％

１．２ｏｈｍ　５Ｗ

ＨＩＧＨ　ＩＮＰＵＴ ０．１２５

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

4

IQ 3

Exploded View of Cabinet

ITEM PART NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 21

2150-5781-0 4158-6310-0 4154-2451-0 2918-4025-3400 2150-5911-0 4160-0000-0 2912-3516-3000 FCCW0C 2900-4015-3000 1419-0390-0 1419-0391-0 1419-0392-0 1419-0394-0 1422-9030-0 4153-0461-0 3000-6333-0 XOVER-FCD90C 4153-0421-0 4153-4771-1 3000-8902-0 4153-3642-0 4153-3381-0.V 4124-0180-0 4153-3591-0 3000-8006-0 4149-7131+0 2600-4008-1007 4149-7021-0

DESCRIPTION

11MM BADGE FOR Q SERIES GRILLE ASSY BLACK FOR IQ3 GRILLE SOCKET FOR Q ME SCREW ALLEN HARD KEF BADGE ON BAFFLE 13MM TRIM/PORT BLACK FOR IQ3 OVAL COUNTERSUNK HEAD SP1535 6.5" 4OHM UNI-Q MA SCREW 4*15 6.8MM BK/R CABINET FOR IQ3 BLACK ASH VINYL CABINET FOR IQ3 CALVADOS C VINYL CABINET FOR IQ3 D386SR CRYSTAL PE CABINET FOR IQ3 D426SR AMATI PC FAIRING BLACK FOR IQ3 ACOUSTIC WOOL 200*600*30 BARCODE S/N LABEL CROSSOVER FOR IQ3 LUXBOND-CSC 330*240*30MM PORT TUBE REAR PART MADE IN CHINA LABEL EVA GASKET 50*250*T1.5 EVA GASKET 3*515 TERMINAL PANEL FOR IQ3 FOAM GASKET D161*D143*T0.8 IQ3 MODEL LABEL SP350 EVA GASKET IQ9 TERMINAL T=1.5MM FLAT WASHER 4.2MM*10MM*0 FOAM GASKET IQ3 T=5MM

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

IQ3

QTY.

1.0 EA 1.0 EA 4.0 EA 5.0 EA 1.0 EA 1.0 EA 3.0 EA 1.0 EA 3.0 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 1.0 EA 2.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 1.0 EA 3.0 EA 1.0 EA

FCD90C/1C FCD92C/4C

peng yuejun

１ ２

Ｄ．４

Ａｕｇ／０５／０５

ＩＱ３

Ｒｅｍｏｖｅ　ＨＦ　ｐｒｏｔｅｃｔ　ｌａｂｅｌ

　　　　　　　　　Ｄｒａｗｉｎｇ　Ｒｅｌｅａｓｅ

ＮＴＳ Ａ４

Ａｐｒ／１０／０５

Ａｕｇ／０５／０５

5

IQ 3

Exploded View of Packaging

4301-6033-1.V WARRANTY CARD FOR Q95C.2 4153-0611-0.V FOAM PLUG FOR Q1 .V DOCUMENT BAG ZIPLOCK FOR GK-1114 4153-7191-0 .V FOOT 3M SJ-5012 BLACK 1490-8933-0.V POLYFOAM FOR IQ3 1497-5082-0.V PO BAG FOR Q1 (750*530*0.04) IQ3 CAB-ASSY .V IQ3 CABINET ASSY 145B-1441-0.V CARTON BOX FOR IQ3 3000-8064+0.V UPC LABEL-IQ3 BK ASH 3000-8065+0.V UPC - IQ3 DARK APPLE 3000-8066+0.V UPC LABEL FOR IQ3 MAPLE 3000-8067+0.V UPC-IQ3 AMERICAN WALNUT .V .V .V .V

FCD90C/1C.V FCD92C/4C.V

7 8

9

10 11

4 5 6

3

PENG YUEJUN

14

JUL/22/05

1

A4

2

NTS

13

12

PACKAGING DRAWING

IQ3-PACK

1 1

1

6

IQ 3 System Frequency Response Curve

7

IQ 3 System Impedance Curve

8