Description
PIONEER D-70Electronic Crossover Network (Active 2 Way Crossover)Made In Japan The pictures show the product for sale.Tested, working product. Warnung! Ich bin kein Händler, sondern nach BGB eine Privatperson und schließe hiermit ausdrücklich die nach neuem EU-Recht vorgeschriebene Garantie und das Umtauschrecht von einem Jahr auf alle hier angebotenen Produkte aus. Die Angaben über den angebotenen Artikel sind nach bestem Wissen und Gewissen gemacht worden, technische Fehler sind vorbehalten. Farbabweichungen und Oberflächen Veränderungen sind alterungsbedingt und nicht abzuändern. Hier beschriebene Artikel wird so wie er ist als gebraucht und seinem Alter und Einsatz als voll funktionsfähig angeboten. Keine Rücknahme/Umtausch oder Ersatz bei Nichtgefallen. Warning!I am not a dealer, but a private individual according to the German Civil Code (BGB) and hereby expressly exclude the guarantee and the right of exchange of one year for all products offered here as required by new EU law. The information about the article offered has been given to the best of my knowledge and belief, technical errors are reserved. Color variations and surface changes are due to age and cannot be changed. The article described here is offered as is as used and fully functional given its age and use. No return/exchange or replacement if you are not satisfied. AC 100V 50/60Hz 11W (Original Japan Model)440 x 347 x 94mm 5,9kg Attention!Pictures are better than words. My pictures show exactly the offered item. If there should be more, it will be mentioned in the description. Ive written everything about the product. I accept no liability for damage resulting from transport. The shipping company is responsible for any damage resulting from shipping.The customs costs incurred must be paid by the buyer. The authority of the buyers country provides information on customs costs.No warranty. I will not buy back the product sold! Only buy if you accept my terms! If you have any questions, please ask. Because this item is used / it will show minimum to moderate cosmetic wear and may have some noticeable, scratches, scuffs, dust, and other wear. We would also advise viewing each of the pictures to get a better idea of condition specifics.Private seller, no warranty, no return, no repurchase. Pioneer D-70 ¥ 45,000 (1976-1980)CommentaryA simple two way electronic crossover network designed for ease of use.The high-pass filter part of the buffer amplifier uses a pure complimentary service class A SEPP circuit with two positive and negative power supplies (± 31 v) excellent in high-frequency characteristics.Even harmonic distortion, which accounts for most of the distortion components, is canceled by the complimentary service circuit and operates at low distortion.In addition, by increasing the input impedance and decreasing the output impedance, it is designed not to affect the CR element of the filter.The low-pass filter consists of three stages. The first stage employs a pure complimentary service class A SEPP circuit with two positive and negative power supplies (± 31 v), the same as the high-pass section. The second stage employs a pure complimentary service class A SEPP circuit with two positive and negative power supplies, and the last stage employs a pure output class A SEPP circuit with two positive and negative power supplies.The condenser of the filter circuit uses elements with low loss and leakage current, such as a styrene condenser with an error of 2%, to improve the accuracy of frequency characteristics, sound rise and crossover frequency.There are 11 cut-off frequencies for the position of magnification x1 and 11 cut-off frequencies for the position of magnification x10. Even if overlapping frequencies are considered, 21 cut-off frequencies can be selected in increments of 1/3 octave.The cutoff slope is 12dB/oct, and a filter with linear slope characteristics up to an attenuation of -80dB (1 / 10,000 voltage) or less is used.The cut-off frequency switch is independent of the low-pass or high-pass mode, so it is possible to overlap the crossover between woofer and tweeter.The level control is a 32-position, a 32-position, 1-dB-step attenuator.The memory marker allows you to accurately reproduce the original level even if you move the level you set once.When the network switch is turned off, the signal from the preamplifier can be output to the low-pass Variable jack as it is.Rack mount adapter that can be mounted on separately sold EIA standard rack, JA-R2S and JA-R1S is included (2U).Also, if you remove the Adapter part, the width will be the same size as the 20th series.It uses a design that matches with Pioneers Separate Amplifier No. 70 series. Model RatingTypeElectronic High-End crossover networkCircuit systemHigh-pass filter ;Positive and negative 2 power supply A class SEPPLow Pass Filter :First stage : Positive and negative 2 power supply A class SEPP2-stage : Positive and negative 2 power supply first stage differential single emitter output3-stage : Positive and negative 2 power supply first stage differential A-class SEPPCutoff frequencyLow pass, high passx1 position : 100, 125, 160, 200, 250, 320, 400, 500, 630, 800, 1 kHzx10 positions : 1k, 1.25k, 1.6k, 2k, 2.5k, 3.2k, 4k, 5k, 6.3k, 8k, 10 kHzSlope characteristic12db/octLevel control0 ~ -30dB (1 dB step), - ?Insertion loss0 to -2dBInput impedance40k ?Output impedance3k ? (MAX)Output (RL : 50k ?)1 v, 8 v (MAX)Harmonic distortion factor (20 Hz to 20 kHz)0.003% (1 V Output)0.01% (8 v Output)Frequency Response (Low End/High End)5Hz/500kHz +0 -1dBSN ratio (at 1 V output)100 dB (IHF, A-network, short circuit)Semiconductor usedTransistor : 46Diode, other : 36 pcsPower supply voltage100 V, 50Hz/60HzPower consumption (Electrical Appliance and Material Control Law)11WExternal dimensionsWidth 480x Height 94x Depth 347 mm (includes rack-mount adapter)Weight5.9kgEIA standard rack mounting unit2U
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