Pioneer Series 20 D-23 Electronic 4-Way Crossover with Rare Rack Mount

Description: Pioneer Series 20 D-23 Electronic 4-Way Crossover with Rare Rack Mount General:One of the cleanest and most complete D-23's we've seen. Features the Pioneer JA-R101 rack shelf (not easy to find) and original box (even rarer).We found this piece to work beautifully, just needed to have the controls cleaned and proper operation confirmed. Super flexible and capable of dividing signals to most speakers that do not feature a built-in crossover. Cosmetic Condition: • The D-23 itself shows wear on the right and left sides of the faceplate from being mounted in the rack bracket.• The Pioneer logo on the front plate seems to have been sanded or polished off at some point in the past, perhaps to hide from the public that a piece of Pioneer gear was being used in a professional application?• Light blemishes to faceplate and knobs. More from Pioneer:A crossover network that emphasizes various functions and basic performance so that you can enjoy a wide range of multi-amplifiers from 2-way to 4-way.The buffer amplifier of the main circuit is a pure complimentary service SEPP circuit configuration with ± 2 power supply using a pair of low-noise transistors with uniform characteristics. This reduces even-order harmonic distortion components. In addition, the input impedance is set high and the output impedance is set low to prevent the influence of the CR element of the filter. In addition, the power supply supplies high voltages of + 30 V and -22V by the left and right independent constant voltage circuits, ensuring a wide dynamic range and eliminating mutual interference between channels.The bandwidth can be divided into four sections, Low/Mid-Low/Mid-High/High, and up to four ways of multiplexing can be achieved. The cutoff frequency is 11-point selection for each 1/3-octave band, and high cut and low cut are independent.The level control for each band is a 1-dB-step attenuator.The cutoff slope can be selected from 3 types : 6, 12 and 18 (dB/oct). For 6dB/oct. and 18dB/oct., the attenuation at the crossover point is -3dB. However, for 12dB/oct, when crossing at -3dB, the characteristics may increase due to the phase relationship. Therefore, only 12dB/oct is used as a -6dB cross. All slope switches are equipped with a flat position except for the low cut of the High position. By utilizing this, various types of multi-amplifier systems from 2 way to 4 way can be freely configured.Brand Background:Link to Pioneer Home Audio HistoryOwnership:UnknownConnections:RCA inputs and outputs plus captive power cordGeneral Sound:Smooth, uncolored, undistorted natural and cleanCosmetic Condition:7/10 = Good. One or two minor scratches. Well Maintained.. See our detailed rating description here.Working Condition:Working perfectly and tested in our lab.Included:Just the unit and power cord. Packing:Original Manufacturers PackingReviews:Click HereSpecs:Level Control:0 to -30 dB (1 dB step)Insertion Loss:0 to -2 dBOutput:1V to 10V (maximum)Total Harmonic Distortion:0.005% (1V output)0.1% (10V output)Frequency Response:10 Hz to 100 kHzHum and Noise:100 dB Dimensions:16.54" x 5.91" x 13.86" (420 x 150 x 352mm)Weight:15 lbs.Approximate Age:1980Link to Manual:Click HereSkyFi Audio - Curators of Vintage Audio Gear SkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of high end audio equipment. We only buy equipment that we admire and are passionate about. No mid-fi, no gimmicks, no junk. Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold. We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units. Please note we are not a repair shop and only restore what we own. Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project, and Sony ES, we have access to OEM parts, service, and support. ---------- PURCHASING GUIDELINES: 1) This item will be professionally packaged and insured for safe transit to your home unless you opt for local pickup from our shop. All local pickup items are only wrapped in industrial strength clear stretch wrap if the original manufacturer packaging is unavailable. Local pickup is available in Glen Rock, NJ, 07452, just a half hour drive from Midtown Manhattan, with convenient parking near our building. If we don’t have the original packaging, we use heavy-duty double-ply corrugated boxes with custom made to your item SealedAir Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. Lightweight items will be bubble wrapped and shipped in a high-quality box. 2) We will not review or accept any offers that do not go through the official eBay system. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. Please do not message, email, or text any offers. 3) All listings are eligible for the eBay Global Shipping Program unless the item exceeds the maximum weight/price requirements to your country. If this is the case simply message us via eBay. We only accept bank wire transfers for international payments and frequently ship worldwide via UPS. 4) Please ensure your shipping address is correct within eBay as we will ONLY ship to the eBay/PayPal Confirmed Shipping Address. No exceptions. 5) eBay may charge and collect sales tax to your state/jurisdiction which we have no control over. eBay v1.7 Pioneer Series 20 D-23 Electronic 4-Way Crossover with Rare Rack Mount General: One of the cleanest and most complete D-23's we've seen. Features the Pioneer JA-R101 rack shelf (not easy to find) and original box (even rarer). We found this piece to work beautifully, just needed to have the controls cleaned and proper operation confirmed. Super flexible and capable of dividing signals to most speakers that do not feature a built-in crossover. Cosmetic Condition: • The D-23 itself shows wear on the right and left sides of the faceplate from being mounted in the rack bracket. • The Pioneer logo on the front plate seems to have been sanded or polished off at some point in the past, perhaps to hide from the public that a piece of Pioneer gear was being uséd in a professional application? • Light blemishes to faceplate and knobs. More from Pioneer: A crossover network that emphasizes various functions and basic performance so that you can enjoy a wide range of multi-amplifiers from 2-way to 4-way. The buffer amplifier of the main circuit is a pure complimentary service SEPP circuit configuration with ± 2 power supply using a pair of low-noise transistors with uniform characteristics. This reduces even-order harmonic distortion components. In addition, the input impedance is set high and the output impedance is set low to prevent the influence of the CR element of the filter. In addition, the power supply supplies high voltages of + 30 V and -22V by the left and right independent constant voltage circuits, ensuring a wide dynamic range and eliminating mutual interference between channels. The bandwidth can be divided into four sections, Low/Mid-Low/Mid-High/High, and up to four ways of multiplexing can be achieved. The cutoff frequency is 11-point selection for each 1/3-octave band, and high cut and low cut are independent. The level control for each band is a 1-dB-step attenuator. The cutoff slope can be selected from 3 types : 6, 12 and 18 (dB/oct). For 6dB/oct. and 18dB/oct., the attenuation at the crossover point is -3dB. However, for 12dB/oct, when crossing at -3dB, the characteristics may increase due to the phase relationship. Therefore, only 12dB/oct is uséd as a -6dB cross. All slope switches are equipped with a flat position except for the low cut of the High position. By utilizing this, various types of multi-amplifier systems from 2 way to 4 way can be freely configured. Brand Background: Link to Pioneer Home Audio History Ownership: Unknown Connections: RCA inputs and outputs plus captive power cord General Sound: Smooth, uncolored, undistorted natural and clean Cosmetic Condition: 7/10 = Good. One or two minor scratches. Well Maintained.. See our detailed rating description here. Working Condition: Working perfectly and tested in our lab. Included: Just the unit and power cord. Packing: Original Manufacturers Packing Reviews: Click Here Specs: Level Control: 0 to -30 dB (1 dB step) Insertion Loss: 0 to -2 dB Output: 1V to 10V (maximum) Total Harmonic Distortion: 0.005% (1V output) 0.1% (10V output) Frequency Response: 10 Hz to 100 kHz Hum and Noise: 100 dB Dimensions: 16.54" x 5.91" x 13.86" (420 x 150 x 352mm) Weight: 15 lbs. Approximate Age: 1980 Link to Manual: Click Here SkyFi Audio - Curators of Vintage Audio Gear SkyFi Audio is a small startup business specializing in the purchase, reconditioning, and reselling of high end audio equipment. We only buy equipment that we admire and are passionate about. No mid-fi, no gimmicks, no junk. Each piece of equipment is cosmetically restored and fully tested in our well-equipped lab by an engineer with 30+ years of experience in the HiFi world. If it does not meet or exceed the original manufactures specifications, it will not be sold. We are very selective about the equipment we purchase, focusing on mostly analog, high-build quality, American, and European built units. Please note we are not a repair shop and only restore what we own. Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project, and Sony ES, we have access to OEM parts, service, and support. ---------- PURCHASING GUIDELINES: 1) This item will be professionally packaged and insured for safe transit to your home unless you opt for local pickup from our shop. All local pickup items are only wrapped in industrial strength clear stretch wrap if the original manufacturer packaging is unavailable. Local pickup is available in Glen Rock, NJ, 07452, just a half hour drive from Midtown Manhattan, with convenient parking near our building. If we don’t have the original packaging, we use heavy-duty double-ply corrugated boxes with custom made to your item SealedAir Instapak expanding foam custom inserts. In many cases this has proven to be better than the original packaging! We also use high quality fiber reinforced tape to seal our packages. Lightweight items will be bubble wrapped and shipped in a high-quality box. 2) We will not review or accept any offers that do not go through the official eBay system. We have too many items for sale and it’s nearly impossible to keep track of offers outside of the official system. Please do not message, email, or text any offers. 3) All listings are eligible for the eBay Global Shipping Program unless the item exceeds the maximum weight/price requirements to your country. If this is the case simply message us via eBay. We only accept bank wire transfers for international payments and frequently ship worldwide via UPS. 4) Please ensure your shipping address is correct within eBay as we will ONLY ship to the eBay/PayPal Confirmed Shipping Address. No exceptions. 5) eBay may charge and collect sales tax to your state/jurisdiction which we have no control over. eBay v1.7 × × × × × × × × × × × × × × × × × × × × × Buy now and save! Tell a friend Visit store Watch now Postage info UPS Ground - $0.00 Local Pickup - $0.00 Click the Postage tab above the listing description for more info Additional delivery notes PICK UP OPTION Our items are available for pick-up. Pick up procedure is as follows: Purchase the item through eBay Email us to coordinate pickup PAYING VIA PAYPAL We accept PayPal on our all our items so you can shop with confidence. Simple choose the PayPal option when proceeding through the checkout. Additional Information No additional information at this time Ask seller a question You might also like Dynavector 10x3 High-Output MC Phono Cartridge Music Reference RM-5 MK II Tube Preamplifier with Phono Music Reference RM-9 Tube Amplifier With EL34's Marantz Model 150 Vintage AM/FM Tuner with Scope Contact To contact our Customer Service Team, simply click the button here and our Customer Service team will be happy to assist. 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Price: 2665 USD

Location: Glen Rock, New Jersey

End Time: 2024-08-29T19:10:59.000Z

Shipping Cost: 0 USD