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Very good quality original datasheet!I like this amazing website!!!!!!
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Excellent just what I needed to replace the electrolytic caps and make this old gem a beauty again. Was as scan of the original photocopied service manual.
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It was helpful to get schematic with waveforms in important points and lot of service information. Manual is good quality, fast delivered. Of course it is hardcopy of paper one with all its disadvantages.
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I want to give you a real heads-up for your desire to enable such people as I to acquire the information I need to maintain the older types of equipment such as this Akai HXA351W. You do a swell job with all the processes you have to perform so I can have a legible, thus usable
document which does not send me crazy trying to figure out the blurry text of a bad copy.
Very well done, Thomas.
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This manual is very well presented and after printing out looks about as close to an original as I think you can get. The quality is second to none.
The content of the manual is comprehensive and I think it would be well suited to an audio repair professional which I'm not but I did find it very informative and helpful.
The cost of the manual is more than covered by the money I'll save when I change the keep memory battery now I have the relavant info.
Very pleased with my purchase and can recommend it wholeheartedly as I can other manuals I've downloaded from this site.
Regards
Limey Alex
Reference 1240w 12" Woofer � Technical Data
CAR AUDIO
SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS:
mounting depth 5-1/16" (129 mm)
12" (300MM) 93 dB 300 WRMS 1200 WPEAK 23 ~ 400 HZ 4 OHMS 2.0" (51.0 MM)
SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)
Reference 1240w
(side view)
VBOX = 1.25 ft3 (35.40 liters)
cutout diameter 11-3/16" (284mm) outer diameter 12-7/16" (316mm)
SEALED ENCLOSURE FREQUENCY RESPONSE @ 2.83 V
105 dBSPL 100 95 90 85 80 75 70 65 60 55 20 Hz 30 40 50 60 70 80 90 100 200 300
THIELE-SMALL PARAMETERS
VOICE COIL DC RESISTANCE: DRIVER RADIATING AREA: MOTOR FORCE FACTOR: COMPLIANCE VOLUME: SUSPENSION COMPLIANCE: MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: FREE-AIR RESONANCE: MECHANICAL Q: ELECTRICAL Q: TOTAL Q: MAGNETIC-GAP HEIGHT: VOICE-COIL HEIGHT: MAXIMUM EXCURSION: R EVC (OHMS) . . . . . . 3.40 S D (IN 2) . . . . . . . . 82.46 S D (M ) . . . . . . . 532.00
2
In-Car 12 dB LP @ 80 Hz
Out-Of-Car
VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 2.54
BL (TM) . . . . . . . . 14.24 VAS (FT3) . . . . . . . . 3.00 VAS (LITERS) . . . . . 84.40 C MS (µM/N) . . . . 210.00 MMS (GRAMS). . . . 187.60 MMD (GRAMS) . . . 180.60 FS (HZ) . . . . . . . . 25.40 Q MS . . . . . . . . . . . 7.62 Q ES . . . . . . . . . . . 0.50 Q TS . . . . . . . . . . . . 0.47 HAG (IN) . . . . . . . . 3/8 HAG (MM) . . . . . . . . 9.00 HVC (IN) .. . . . . . . . 1-1/4 HVC (MM) . . . . . . . . . . 32 X
MAX
SEALED ENCLOSURE CONE EXCURSION @ 300 W
30m M 20m 10m 5m 2m 1m 500u 200u 100u 50u 20u 10u 5u 20 Hz 30 40 50 60 70 80 90 100 200 300
(IN) . . . . . . . . 7/16
X MAX (MM) . . . . . . 11.50
Harman Consumer Group � 250 Crossways Park Drive � Woodbury, NY 11797 � VOICE: 516-674-4463 � www.infinitysystems.com
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