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Dahlquist DQ-LP1
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Dahlquist DQ-LP1 variable low pass filter
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4 000 kr
Beskrivelse av varen
Tilstand: Pent brukt - I god stand
Type: Annet
Dette er virkelig en sjelden sjanse. Finner ingen slike på Hifishark eller Ebay. Så denne kan fort ende med salg ut av landet.
Ønsker du å komplettere dine Dahlquist DQ-10 med passiv sub og effektforsterker er det denne du skal ha. Skreddersydd for oppgaven.
Den kan selvsagt også brukes i andre oppsett. Meget fleksibel liten sak. Står endel om dette i den engelske teksten nederst i annonsen.
De orginale komponentene som fulgte med da denne var ny følger med. Dette er for å tilpasse den til forskjellige forsterkere. Spesifisert godt i bruksanvisning.
Bruksanvisning og garantipapirer følger med.
Enheten ser fin ut for alderen, og jeg har akkurat testet den. Alt fungerer helt utmerket.
Intenational buyers are welcome. Payment with Paypal.
Engelsk tekst lånt på nettet.
The Dahlquist DQ-LP1 is a unique line-level crossover which combines an electronic Low-Pass filter with a passive High-Pass filter.
The LP1 is intended primarily for integrating a subwoofer into an otherwise full range loudspeaker system. It may also be used to bi-amplify a single loudspeaker system where the crossover point is tunable from 40 to 400 Hz.
As with other electronic crossovers, the LP1 is connected between the preamplifier and the two power amplifiers; one amplifier feeds the main speaker, the other drives the subwoofer(s).
The active Low-Pass section, which feeds the subwoofer amplifier, is continuously variable from 40 to 400 Hz and provides a cut-off rate of 18db per octave. This steep slope is achieved through a non-ringing, staggered arrangement of 6-12-18 db/octave slopes, preserving bass transients. Distortion is exceptionally low, measuring 0.005% THD.
Of particular importance in a device of this type is the performance of the High-Pass section which feeds the main power amplifier. Any distortion introduced in this stage will noticeably degrade the important middle and upper frequencies. In order to avoid such degradation, the 6db/octave High-Pass section of the LP1 is purely passive and can be set for any desired crossover frequency by inserting a capacitor and/or resistor into the terminals provided on the LP1's printed circuit board.
The front panel frequency control does not effect the High-Pass frequency. Push-button switch S1 allows complete passive defeat of the High-Pass section and muting of the low frequency section to instantly restore the system to single amplifier operation.
NB: Knappen for å vise hele beskrivelsen har kun en visuell effekt.
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Sist endret: 25.11.2025 kl. 22:29 ・ FINN-kode: 405693070
