Related Manuals for Blaupunkt PC85
Summary of Contents for Blaupunkt PC85
- Page 1 Professional Quality Component Subwoofers Subwoofers ti composant de qualitci! professionneile Subwoofers corn componente de qualidade profissional Made in the U.S.A Bosch Group...
- Page 2 Apoyo Tdcnico PC85 especificaciones tecnicas y disefios recomendados de la.caja PC105 especificaciones tecnicas y diserios recomendados de la caja PC1 25 especificaciones tecnicas y disetios recomendados de la caja Blaupunkt hoja de resumen de apoyo t6cnico (hoja fax) Otras notas...
- Page 3 INSTALLATION GUIDELINES examines additional automotive installation concerns and ADDITIONAL REFERENCE INFORMATION offers additional technical references for those trying to learn more about car audio. BLAUPUNKT WARRANTY INFORMATION for the applicable country is noted. BLAUPUNKT TECHNICAL SUPPORT provides telephone and fax support numbers and addresses with the BLAUPUNKT TECHNICAL SUPPORT SUMMARY SHEET formalizes your tech requests so they can be mailed in and/or faxed in to our technical support people.
- Page 4 SUPERIOR PERFORMANCE PARAMETERS for the new PC units were strategically balanced so that low resonant frequencies could be achieved along with high sound pressure levels. Cone mass is held to a minimum for high efficiency yet its Acrylic Resin Laminate (ARL) design yields tremendous rigidity.
-
Page 5: System Planning
SYSTEM PLANNING : : I! If, ::_ The largest possible impact on any audio system (home or car) is the quality of loudspeakers used and their placement. EFFICIENCY defines how loud a speaker will play for a given input power and is often quoted at 1 watt input and meas at a 1 meter distance. -
Page 6: Passive Crossover
ACTIVE CROSSOVER SYSTEM OUTPUT RADIO ACTIVE CROSSOVE FREQUENCY Inductor Value 6 dBlOctave PASSIVE CROSSOVER 12 dBlOctave Sound is created by the movement of the woofer cone back and forth. If a woofer cone moves forward creating a positive pressure wave, this same motion creates a negative pressure at the back of the woofer. - Page 7 COMMON ENCLOSURE TYPES In the car audio world there are 5 types of subwoofer enclosures commonly used; INFINITE BAFFLE, SEALED BOX (closed box), VENTED BOX (bass reflex), SINGLE-VENTED (often incorrectly referred to as “7th” order). No single design is superior because each has its own compromise in performance, power handling, and design complexity.
- Page 8 ISOBARIC WOOFER CONFIGURATIONS Increasing in popularity in recent years is the compound woofer design, more commonly known as the “Isobaric” design. Isobaric actually means “constant pressure” which is the case having two woofers moving an encapsulated pocket of air between them in the same direction. This arrangement acts like a single speaker which effectively reduces the required box volumes for a subwoofer system by 50%...
- Page 9 During box construction, temporarily assemble the box to make sure all pieces line up properly. Then assemble all pieces before cutting out the holes for the woofers. Once the box is fully assembled, connect an oscillator/amplifier to the w’oofer, sweep it through 20- 100 Hz, and listen for strange air whistling noises, buzzes, and rattles.
- Page 10 We recommend that you have your Blaupunkt woofers professionally installed. If you choose to do your own installation please note the following important information. Before cutting any trim or steel -make sure you clear all moving parts and factory electrical lines.
- Page 11 To obtain performance of this warranty, contact the nearest Blaupunkt dealer. A dated purchase receipt or other proof that the product is within the warranty period will be required in order to honor your claim.
- Page 12 Nominal drameter 8.0 in (200mm) Magnet weight 20 oz (5689) Nominal impedance DC resistance (Re) 2.42 Q 44 Hz Resonance frequency (fs) 0.39 Total Q factor (Qts) Mechanical Q (Qms) 10.3 Electrical Q (Qes) 0.41 Equivalent air volume (Vas) 0.86 ft’ (24.3 Itr’s) Air volume displacement 0.06 ft’...
- Page 13 V E N T E D B O X . 0 . 5 vs. 1 . 0 BOX, 1.5 cu.rt. 1.0 cu.rt. [The data above is offered as a “starting point” for comparison purposes because these designs are only a few of many possible box configurations.
- Page 14 95 dB, 2.83v/lm Although limited in cutoff frequency, most listerners should be satisfied Somewhat “one-note” performance due to narrow bandwidth response Smooth frequency response & good transinents but lower efficiency (Parameter values may deviate slightliin production units but the perceived performance variations will be negligible.)
- Page 15 S E A L E D B O X , 0 . 5 1 . 5 CU.ft. Total band Total tube band volume for 2” for 3” I. D. I. D. feet) (Hz) (Hz) (inches) (Inches) (dB) 9 10 0.76 5 6 0 1 3 7 3.60...
- Page 16 Woofer outline drawing Sensitivity (SPL) 96 dB, 2.83vllm 93 dB. lW/lm ‘2.0 Smooth frequency roll-off and excellent transient response Jam on it! 0.75 Somewhat boomy due to bump in response @ 100 Hz Smooth frequency response and good transient response _ 3 ,.,k _Y 11 -i .vI ljYLYY .
- Page 17 V E N T E D BOX, 0 . 7 5 v s . 2 . 0 cu.ft. Total t u n e f r o n t rear tube tube band volume length length effc’y for 4” I. D. I.
- Page 18 Nominal diameter 15.0 In (380mm) Magnet weight 40 02 (11409) Nominal imoedance DC resistance IRe) 2.08 f-l Resonance frequency (fs) 24 Hz Total Q factor (Qts) 0.38 Mechanical Q (Qms) 7.10 Electrical Cl (Qes) Eauivalent air volume IVas) 12.1 ft’ (342 Itr’s) Air volume disalacement 0.35 ft’...
- Page 19 f e e t ) ( H z ) (dB) V E N T E D B O X , 1 . 5 vs. 3 . 0 CU.ftL. 3 . 5 vs. 6 . 0 cu.ft. Total Freq. Freq. Port Vented Sealed Port tube tubs band...
- Page 20 If you have questions regarding the Blaupunkt PC woofer products and/or installation, please fill out this sheet and return by fax or mail. A davtime teleohone number is a must; lease be sure to include it! (At this time we can onl orovide answers in English.)
- Page 22 Robert Bosch Corporation Sales Group - Blaupunkt Division 2800 South 25th Avenue, Broadview, Illinois 60153 Division Blaupunkt de Robert Bosch Inc. Mississauga, Ontario Canada L5N IRI Copyright 1995 by the Robert Bosch Corporation No portion of this work may be reproduced in any form without the written consent of the Robert Bosch Corporation Printed in the U.S.A., April 1995...
Need help?
Do you have a question about the PC85 and is the answer not in the manual?
Questions and answers