SX-1250 AWH-048-A0 power amplifier pcb (pair), blank set with connectors (new)
Save, restore, upgrade your Pioneer SX-1250 receiverFor sale, brand new power amplifier set of two blank pcbs with connectors installedThis design is electrically equivalent and interchangable with the original Pioneer designDesign improvements address a number of reliability issues regarding the original designThe pcb is double sided, 1 oz. copper cladding, green solder-mask, silkscreen printing for component identification All high quality parts from leading manufactures. Parts at Mouser are ~$50US/pcb. Heatsinks are included. This is intended for customers which have some prior experience in building electronic assemblies. Knowing how to read a schematic is benificial. We also offer a complete set of two assembled and tested modules in another listing These are custom built to order. What you will get.Two new power amplifier pcbs, set of two blanks with connectors installed plus supply of two heatsinksFull set of printed documentation and installation notes, link to cloud for pics and docsLink to Mouser shopping cart, to order parts. The cart is for one assembly, so you buy it twice for the pairYou can contact us for technical support using supplied email in the documentsImprovements over the original Pioneer versionThe pcb material is much better, higher temp FR4 epoxy glass construction, LPI solder mask, double sided PHT, silkscreen legendsUpgraded high performance heatsink to run the devices cooler, so they last much longerNew temperature sensing design for pre-drivers, drivers and main heatsinks, dual BJT bias spreader, eliminates the use of the STV-4 diodesOnSemi MJE15032G/15033G drivers specifiedPrecision metal film and metal oxide resistors, UES, UKL, UPW or equiv ecaps. All current production parts from Mouser &/or Digi-KeyEasy installation/service, using the existing connectors and mounting plate. No soldering required for installationConnector pins are gold plated to prevent tarnishYou need to adjust OutPut Stage Bias (OPS) using a DC voltmeter (DMM) and lead clip-on grabbers.This setting is required since your OPS transistors(bjts) are not exactly the same as the ones we use for testing (MJ21195/MJ21196). The design can use the original OPS bjtsA DMM is required to set OPS bias however a inexpensive DMM can be used and precision accuracy is not important for the bias setting. A scope is not requiredIf you are not in any hurry, it's more economical to select "Canada Post Tracked Packet - USA" instead of "Canada Post Xpresspost - USA", it only adds a few extra days of shipping time and saves you some $. Both methods are insured postage.
Specifications
| Returns Accepted | ReturnsNotAccepted |
| Brand | Custom Design |
| Model | AWH-048-A0 |
| MPN | AWH-048-A0 (blank) |
| Country/Region Of Manufacture | Canada |
Save, restore, upgrade your Pioneer SX-1250 receiverFor sale, brand new power amplifier set of two blank pcbs with connectors installedThis design is electrically equivalent and interchangable with the original Pioneer designDesign improvements address a number of reliability issues regarding the original designThe pcb is double sided, 1 oz. copper cladding, green solder-mask, silkscreen printing for component identification All high quality parts from leading manufactures. Parts at Mouser are ~$50US/pcb. Heatsinks are included. This is intended for customers which have some prior experience in building electronic assemblies. Knowing how to read a schematic is benificial. We also offer a complete set of two assembled and tested modules in another listing These are custom built to order. What you will get.Two new power amplifier pcbs, set of two blanks with connectors installed plus supply of two heatsinksFull set of printed documentation and installation notes, link to cloud for pics and docsLink to Mouser shopping cart, to order parts. The cart is for one assembly, so you buy it twice for the pairYou can contact us for technical support using supplied email in the documentsImprovements over the original Pioneer versionThe pcb material is much better, higher temp FR4 epoxy glass construction, LPI solder mask, double sided PHT, silkscreen legendsUpgraded high performance heatsink to run the devices cooler, so they last much longerNew temperature sensing design for pre-drivers, drivers and main heatsinks, dual BJT bias spreader, eliminates the use of the STV-4 diodesOnSemi MJE15032G/15033G drivers specifiedPrecision metal film and metal oxide resistors, UES, UKL, UPW or equiv ecaps. All current production parts from Mouser &/or Digi-KeyEasy installation/service, using the existing connectors and mounting plate. No soldering required for installationConnector pins are gold plated to prevent tarnishYou need to adjust OutPut Stage Bias (OPS) using a DC voltmeter (DMM) and lead clip-on grabbers.This setting is required since your OPS transistors(bjts) are not exactly the same as the ones we use for testing (MJ21195/MJ21196). The design can use the original OPS bjtsA DMM is required to set OPS bias however a inexpensive DMM can be used and precision accuracy is not important for the bias setting. A scope is not requiredIf you are not in any hurry, it’s more economical to select “Canada Post Tracked Packet – USA” instead of “Canada Post Xpresspost – USA”, it only adds a few extra days of shipping time and saves you some $. Both methods are insured postage.
