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  1. Default ÈÝóç tweeter;

    Å÷ù ìßá áðïñßá. Ôï teweeter ðñÝðåé íá åßíáé ôïðïèåôçìÝíï óôï ýøïò ôùí áõôéþí êáèÞìåíïõ áêñïáôÞ, ðåñßðïõ óô 1ì äçëáäÞ, ãéá ôïõò ãíùóôïýò ëüãïõò, áðüäïóç on axis ôùí õøçëþí êëð. Ïìùò âëÝðù ìïíôÝëá óïâáñþí êáôáóêåõáóôþí ð.÷. dynaudio êëð ðïõ êáôáóêåõÜæïõí ç÷åßá ìå áíôßóôñïöç ôïðïèÝôçóç ôùí ìåãáöþíùí ìå áðïôÝëåóìá ôï tweeter íá åßíáé êïíôÜ óôçí âÜóç ôïõ ç÷åßïõ ðïõ ìÜëéóôá åßíáé äáðÝäïõ êáé ü÷é âÜóçò. Ôé ãßíåôáé ëïéðüí ìå ôéò õøçëÝò; ôçí åéêüíá;

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    Since this is in the English-language section for some reason or other, I'll answer likewise. Non-coincident drivers exhibit reinforcement/cancellation patterns within the frequency band in which they work in tandem. Since their displacement in space is translated into an equivalent displacement in time for all points other than those equidistant to their acoustic centers, a lobing pattern is created:

    The axis in the middle of this lobing pattern can be tilted, either by physically displacing the drivers, or by manipulating phase discrepancies arising from the properties of the preceding electrical filters (i.e. the crossover), or both. In actuality the inherent axis of a conventionally mounted driver pair will tilt towards the driver which is mounted further back than the other. Therefore, if a cone woofer is mounted above a dome tweeter, their axis will tilt upwards at the crossover frequency, all other factors remaining equal.
    "Θαυμάζω την κομψότητα της μεθόδου σας. Πρέπει να είναι ωραίο να καλπάζεις με το άλογο των αληθινών Μαθηματικών, ενώ εμείς οι υπόλοιποι αγκομαχάμε στον ποδαρόδρομο" - ο Άλμπερτ Άινσταϊν στον Τούλλιο Λέβι-Τσίβιτα

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    marsteaxi: Å÷ù ìßá áðïñßá. …
    Ôé ãßíåôáé ëïéðüí ìå ôéò õøçëÝò; ôçí åéêüíá;



    Ï Verity Ýëåãå üôé: áí èåò íá ìåãáëþóåéò/øçëþóåéò ôçí åéêüíá, ãåßñå ôï ç÷åßï (ñõèìßæïíôÜò ôï ìå ôéò áêßäåò) ðñïò ôá …åìðñüò.
    (áõôü, êáé áíáëüãùò…, èá ôï åß÷áí -ßóùò- ðáñáôçñÞóåé êÜðïéïé óôéò åêèÝóåéò Þ óôï ÷þñï áêñüáóçò)

    ÖõóéêÜ äåí îÝñù ôé óõìâáßíåé ìå ó÷åäéÜóåéò (êáìðßíåò, crossover, ìïíáä. ìåãáö. ê.ëð.) Üëëùí êáôáóêåõáóôþí
    (ï êáèÝíáò Ý÷åé ôéò áðüøåéò ôïõ êáé ôç öéëïóïößá ôïõ), áðëÜ óïõ áíÝöåñá ôá ôçò Verity.



    êáé ìå ôçí åõêáéñßá, åäþ ìßá ðÜñá ðïëý óïâáñÞ åôáéñåßá ìåãáöþíùí.
    http://www.flexunits.com/iz.asp?id=4|a|130|||
    http://www.flexunits.com/iz.asp?id=4|a|132|||
    Last edited by Ì.Ö; 05-13-2011 at 08:59 PM.

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    Quote Originally Posted by Ì.Ö View Post
    .(ï êáèÝíáò Ý÷åé ôéò áðüøåéò ôïõ êáé ôç öéëïóïößá ôïõ)
    Áõôü áêñéâþò áäõíáôåßôå íá êáôáíïÞóåôå, áãáðçôÝ Ìé÷Üëç. ¼ôé ôá ðåñß "áðüøåùí" äåí åßíáé ðáñÜ ðñïó÷Þìáôá ôùí áäáþí. Ôá ðñÜãìáôá áõôÜ åßíáé êáé åñìçíåýóéìá êáé ðñïâëÝøéìá. Áñêåß íá õðÜñ÷åé ç áðáéôïýìåíç åðéóôçìïíéêÞ êáôÜñôéóç. Áí äåí õðÜñ÷åé, ôüôå Ý÷ïìåí ôï áíôßóôïé÷ï ôùí ðéèÞêùí óôçí åéóáãùãéêÞ óêçíÞ ôçò "Ïäýóóåéáò 2001" ôïõ Êïýìðñéê. Êáêþò, êÜêéóôá ÷ñçóéìïðïéÞóáôå ôïí üñï "öéëïóïößá". ÊÜ-êé-óôá! Ç öéëïóïößá, ç áãÜðç ðñïò ôçí óïößá*, åßíáé åêåßíç ðïõ ïäçãåß ôïõò áíèñþðïõò Ýîù áðü ôïí áíåîÞãçôï êüóìï ôçò ìáãåßáò, ïäçãþíôáò ôïõò óôçí êáôáíüçóç ôçò ðñáãìáôéêüôçôáò. Ðñïöáíþò áõôü óáò ôñïìÜæåé. Ïõãê, ïõãê!

    *Ôá åëåãå êáé ï ÁñéóôïôÝëçò:
    "ðÜíôåò ἄíèñùðïé ôïῦ åἰäÝíáé ὀñÝãïíôáé öýóåé. óçìåῖïí ä᾽ ἡ ôῶí áἰóèÞóåùí ἀãÜðçóéò: êáὶ ãὰñ ÷ùñὶò ôῆò ÷ñåßáò ἀãáðῶíôáé äé᾽ áὑôÜò, êáὶ ìÜëéóôá ôῶí ἄëëùí ἡ äéὰ ôῶí ὀììÜôùí. ïὐ ãὰñ ìüíïí ἵíá ðñÜôôùìåí ἀëëὰ êáὶ ìçèὲí ìÝëëïíôåò ðñÜôôåéí ôὸ ὁñᾶí áἱñïýìåèá ἀíôὶ ðÜíôùí ὡò åἰðåῖí ôῶí ἄëëùí. áἴôéïí ä᾽ ὅôé ìÜëéóôá ðïéåῖ ãíùñßæåéí ἡìᾶò áὕôç ôῶí áἰóèÞóåùí êáὶ ðïëëὰò äçëïῖ äéáöïñÜò. öýóåé ìὲí ïὖí áἴóèçóéí ἔ÷ïíôá ãßãíåôáé ôὰ æῷá, ἐê äὲ ôáýôçò ôïῖò ìὲí áὐôῶí ïὐê ἐããßãíåôáé ìíÞìç, ôïῖò ä᾽ ἐããßãíåôáé." (ÌåôÜ ôá ÖõóéêÜ, 1)
    "Θαυμάζω την κομψότητα της μεθόδου σας. Πρέπει να είναι ωραίο να καλπάζεις με το άλογο των αληθινών Μαθηματικών, ενώ εμείς οι υπόλοιποι αγκομαχάμε στον ποδαρόδρομο" - ο Άλμπερτ Άινσταϊν στον Τούλλιο Λέβι-Τσίβιτα

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    Quote Originally Posted by zonepress View Post
    The axis in the middle of this lobing pattern can be tilted, either by physically displacing the drivers

    Quote Originally Posted by zonepress View Post
    or by manipulating phase discrepancies arising from the properties of the preceding electrical filters (i.e. the crossover)

    http://www.rane.com/pdf/ranenotes/Li...ers_Primer.pdf
    Plain, elementary science. No room for "viewpoints", or "feelings". Or ignorant apes, for that matter:
    "Θαυμάζω την κομψότητα της μεθόδου σας. Πρέπει να είναι ωραίο να καλπάζεις με το άλογο των αληθινών Μαθηματικών, ενώ εμείς οι υπόλοιποι αγκομαχάμε στον ποδαρόδρομο" - ο Άλμπερτ Άινσταϊν στον Τούλλιο Λέβι-Τσίβιτα

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    http://www.dynaudio.com/relaunch1/ho...te_edition.php
    Óáõôü ôï ç÷åßï, ðïõ ðáñåðéðôüíôùò ç åôáéñßá åðéêáëåßôáé ðïëý ãíþóç ðïõ ìüíï áõôÞ Ý÷åé, ôï ôweeter åßíáé óôçí âÜóç ôïõ ç÷åßïõ. Ïé õøçëÝò óõ÷íüôçôåò åßíáé êáôåõèõíôéêÝò áëëÜ êáé åßíáé êýñéá õðåýèõíåò ãéá ôçí äçìéïõñãßá ôçò åéêüíáò. Ïìùò åßôå ìç÷áíéêÜ ãßíåé ç åõèõãñÜììéóç ôùí áêïõóôéêþí êÝíôñùí ôùí ìåãáöþíùí åßôå ìÝóù ôçò ñýèìéóçò ôïõ êñïóïâåñ ðÜëé ï ëïâüò åêðïìðÞò ôïõ tweeter èá åßíáé ÷áìçëÜ, äåí èá öèÜíåé óôï ýøïò ôïõ áõôéïý êáèçìÝíïõ áêñïáôÞ. Ôé ìïõ äéáöåýãåé;(äåäïìÝíïõ ïôé ç dynaudio äåí èá Ýêáíå ôÝôïéï ó÷åäéáóôéêü ëÜèïò ìå ôçí ôå÷íïãíùóßá ðïõ äéáèÝôåé).

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    Quote Originally Posted by marsteaxi View Post
    http://www.dynaudio.com/relaunch1/ho...te_edition.php
    Óáõôü ôï ç÷åßï, ðïõ ðáñåðéðôüíôùò ç åôáéñßá åðéêáëåßôáé ðïëý ãíþóç ðïõ ìüíï áõôÞ Ý÷åé, ôï ôweeter åßíáé óôçí âÜóç ôïõ ç÷åßïõ. Ïé õøçëÝò óõ÷íüôçôåò åßíáé êáôåõèõíôéêÝò áëëÜ êáé åßíáé êýñéá õðåýèõíåò ãéá ôçí äçìéïõñãßá ôçò åéêüíáò. Ïìùò åßôå ìç÷áíéêÜ ãßíåé ç åõèõãñÜììéóç ôùí áêïõóôéêþí êÝíôñùí ôùí ìåãáöþíùí åßôå ìÝóù ôçò ñýèìéóçò ôïõ êñïóïâåñ ðÜëé ï ëïâüò åêðïìðÞò ôïõ tweeter èá åßíáé ÷áìçëÜ, äåí èá öèÜíåé óôï ýøïò ôïõ áõôéïý êáèçìÝíïõ áêñïáôÞ. Ôé ìïõ äéáöåýãåé;(äåäïìÝíïõ ïôé ç dynaudio äåí èá Ýêáíå ôÝôïéï ó÷åäéáóôéêü ëÜèïò ìå ôçí ôå÷íïãíùóßá ðïõ äéáèÝôåé).
    ÐñÜãìáôé ðïëý ðåñßåñãç åðéëïãÞ (áí äåí ìáò îåõöåýãåé êÜôé).
    Åðßóçò, ôï ïôé ðáñÜãåôáé áðï ôçí dynaudio, äåí óçìáßíåé ôßðïôá.
    Åêôüò áí éó÷ýåé Üëëç ÖõóéêÞ ãéá ôçí óõãêåêñéìÝíç åôáéñßá.

    * Åðßóçò áîéïðåñßåñãï (ìÜëëïí êáêü) ôï 85dB @ 4 Ohm.

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    Quote Originally Posted by marsteaxi View Post
    Ïé õøçëÝò óõ÷íüôçôåò .... åßíáé êýñéá õðåýèõíåò ãéá ôçí äçìéïõñãßá ôçò åéêüíáò
    What nonsense! You should really think twice before posting such manifest drivel. When the wavelength of sound becomes comparable to the diameter of the human head (the inter-ear distance of which is commonly taken to average at about 17 cm), phase relationships between left-ear and right-ear incident sound become random. This begins to happen from 2 kHz upwards. Phase-dependent stereolocation then becomes impossible and the human brain switches to an entirely different mechanism, one that is independent of phasing and relies instead on the attenuating effect of the head itself. In other words, the brain switches from a phase-dependent algorithm to a relative amplitude-dependent one. Which makes perfect sense, provided one is endowed with such an attribute (=sense).
    "Θαυμάζω την κομψότητα της μεθόδου σας. Πρέπει να είναι ωραίο να καλπάζεις με το άλογο των αληθινών Μαθηματικών, ενώ εμείς οι υπόλοιποι αγκομαχάμε στον ποδαρόδρομο" - ο Άλμπερτ Άινσταϊν στον Τούλλιο Λέβι-Τσίβιτα

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    Èåëù íá óïõ åðéóçìÜíù üôé äåí åßìáé ïýôå ìåôáðôõ÷éáêüò öïéôçôÞò ôçò çëåêôñïáêïõóôéêÞò ïýôå ôçò øõ÷ïáêïõóôéêÞò,ïýôå êÜíù äéáôñéâÞ óå êÜðïéï óõíáöÝò áíôéêåßìåíï ãéá íá ìå åðéðëÞôåéò êáé íá ìå õðïôéìÜò ìå ôá ãñáöüìåíÜ óïõ. Åíáò áðëüò ÷ïìðßóôáò åßìáé. Äåí åðéèõìþ ðëÝïí áí îáíáñùôÞóù êÜôé íá ìïõ áðáíôÞóåéò ãéáôß ìå õðïôéìÜ ï ôñüðïò ðïõ áðáíôÜò êáé áíôé íá ìå âïçèÞóåé ìå åîïñãßæåé.

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    This is exactly the kindergarten mentality people often resort to. All that matters to them is their plucky little
    Quote Originally Posted by zonepress View Post
    "feelings"
    !
    Dearie, no one ever dared suppose that you are anything even remotely resembling a postgraduate student, or a doctoral one toiling over your dissertation. Do not flatter yourself. This is
    Quote Originally Posted by zonepress View Post
    elementary
    stuff. High-school physics, to be precise. You were taught all you needed at school, for free, and you chose not to pay attention. If you "feel" out of your depth, it is nobody's fault but yours.
    "Θαυμάζω την κομψότητα της μεθόδου σας. Πρέπει να είναι ωραίο να καλπάζεις με το άλογο των αληθινών Μαθηματικών, ενώ εμείς οι υπόλοιποι αγκομαχάμε στον ποδαρόδρομο" - ο Άλμπερτ Άινσταϊν στον Τούλλιο Λέβι-Τσίβιτα

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