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musical instrument details
8 channel preamp Presonus M80 Jensen modded Fet opamps and Soundcraft CPS150 psu
Estimated price for orientation: 800 $
Category: Preamps and Channel Strips
Class:
Description Condition: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition Marca: PreSonus
For sale mint vintage Presonus M80 with original Jensen and modified with ADA4627 Fet opamps, recommended by Jim Williams from audio upgrades.
https://www.gearslutz.com/board/7672513-post29.html(more pics soon)
8 channels high quality, with Jensen color, smooth sound very musical.Original Psu died due to a shortcut on the supply connector, I rebuilded the connector and protected with heat shrink (doesn´t come with heat shrink from factory so be careful if you consider buying other M80, and the original psu is not shortcout protected so can esasily die) replaced the Psu with a Soundcraft CPS 150 psu, much better than original Presonus one, and it even have leds for +17 -17 and 48V, this psu is short protected, so if any problem occur, both output switch off automatically. Only this Psu usually costs around 150-200 euros on ebay.
Psu was trimmed to supply stable +15V and -15V on the preamp rails (the unit has internal points to precise trim the external psu) optimal for this opamps that work with less voltage than stock Ne5534 ones.
Headphone output circuit is disconnected for safety, (only right channel worked), this opamp is soldered on the mainboard so is difficult to replace, so I disconnected the supply to it for safety.
Both L en R XLR output for summing works fine.
Al channels was fully tested aswell.
Sweet sounding unit at unbeatable sound/channel/price ratio.
Sale because need cash for a pair of Dpa mics,
International buyers outside UE ask for shipping cost.Vendo Presonus M80, transformadores originales Jensen, operacionales cambiados por ADA4627 Fet de ultima generacion por recomendacion de Jim Williams (Audio upgrades).
https://www.gearslutz.com/board/7672513-post29.html
(subire mas fotos en breve).
8 previos de alta calidad, calidos y musicales por los trafos Jensen. (Copia del previo Hardy).La fuente original se estropeo por un cortocircuito en el conector de alimentacion al Presonus. El conector esta resoldado con cable termoretractil (no venia con proteccion, asi que cosa a tener en cuenta el que este buscando un M80 es un punto debil, ya que los cables no vienen aislados y con el tiempo pueden llegar a tocarse, y la fuente original no viene protegida contra cortocircuito). He sustituido la fuente por una SoundCraft CPS 150, mucho mejor que la original, sobredimensionada, y protegida contra cortocircuito (en caso de cortocircuito se apagan ambas salidas). Solo la fuente vale entre 150-200 en ebay.
La fuente esta ajustada en los puntos de ajuste interno del previo en +15 y -15 , ajuste fino y estable para estos operacionales que trabajan a menor tension que los originales Ne5534.
El circuito de salida de auriculares ya que solo funcionaba el lado derecho, y esta soldado en la placa principal y dificil de cambiar.asi que le he desconectado la alimentacion por seguridad.
La salida XLR del bus L R para usarlo como sumador funciona perfectamente ambos canales.
Todos los previos testeados con phanton.Oportunidad, sonido musical y calido, y relacion canales/calidad/precio de ganga.
vendo para conseguir caja para comprar unos microfonos Dpa.
Description
| Condition: | Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition | Marca: | PreSonus |
For sale mint vintage Presonus M80 with original Jensen and modified with ADA4627 Fet opamps, recommended by Jim Williams from audio upgrades.
https://www.gearslutz.com/board/7672513-post29.html(more pics soon)
8 channels high quality, with Jensen color, smooth sound very musical.Original Psu died due to a shortcut on the supply connector, I rebuilded the connector and protected with heat shrink (doesn´t come with heat shrink from factory so be careful if you consider buying other M80, and the original psu is not shortcout protected so can esasily die) replaced the Psu with a Soundcraft CPS 150 psu, much better than original Presonus one, and it even have leds for +17 -17 and 48V, this psu is short protected, so if any problem occur, both output switch off automatically. Only this Psu usually costs around 150-200 euros on ebay.
Psu was trimmed to supply stable +15V and -15V on the preamp rails (the unit has internal points to precise trim the external psu) optimal for this opamps that work with less voltage than stock Ne5534 ones.
Headphone output circuit is disconnected for safety, (only right channel worked), this opamp is soldered on the mainboard so is difficult to replace, so I disconnected the supply to it for safety.
Both L en R XLR output for summing works fine.
Al channels was fully tested aswell.
Sweet sounding unit at unbeatable sound/channel/price ratio.
Sale because need cash for a pair of Dpa mics,
International buyers outside UE ask for shipping cost.Vendo Presonus M80, transformadores originales Jensen, operacionales cambiados por ADA4627 Fet de ultima generacion por recomendacion de Jim Williams (Audio upgrades).
https://www.gearslutz.com/board/7672513-post29.html
(subire mas fotos en breve).
8 previos de alta calidad, calidos y musicales por los trafos Jensen. (Copia del previo Hardy).La fuente original se estropeo por un cortocircuito en el conector de alimentacion al Presonus. El conector esta resoldado con cable termoretractil (no venia con proteccion, asi que cosa a tener en cuenta el que este buscando un M80 es un punto debil, ya que los cables no vienen aislados y con el tiempo pueden llegar a tocarse, y la fuente original no viene protegida contra cortocircuito). He sustituido la fuente por una SoundCraft CPS 150, mucho mejor que la original, sobredimensionada, y protegida contra cortocircuito (en caso de cortocircuito se apagan ambas salidas). Solo la fuente vale entre 150-200 en ebay.
La fuente esta ajustada en los puntos de ajuste interno del previo en +15 y -15 , ajuste fino y estable para estos operacionales que trabajan a menor tension que los originales Ne5534.
El circuito de salida de auriculares ya que solo funcionaba el lado derecho, y esta soldado en la placa principal y dificil de cambiar.asi que le he desconectado la alimentacion por seguridad.
La salida XLR del bus L R para usarlo como sumador funciona perfectamente ambos canales.
Todos los previos testeados con phanton.Oportunidad, sonido musical y calido, y relacion canales/calidad/precio de ganga.
vendo para conseguir caja para comprar unos microfonos Dpa.
https://www.gearslutz.com/board/7672513-post29.html(more pics soon)
8 channels high quality, with Jensen color, smooth sound very musical.Original Psu died due to a shortcut on the supply connector, I rebuilded the connector and protected with heat shrink (doesn´t come with heat shrink from factory so be careful if you consider buying other M80, and the original psu is not shortcout protected so can esasily die) replaced the Psu with a Soundcraft CPS 150 psu, much better than original Presonus one, and it even have leds for +17 -17 and 48V, this psu is short protected, so if any problem occur, both output switch off automatically. Only this Psu usually costs around 150-200 euros on ebay.
Psu was trimmed to supply stable +15V and -15V on the preamp rails (the unit has internal points to precise trim the external psu) optimal for this opamps that work with less voltage than stock Ne5534 ones.
Headphone output circuit is disconnected for safety, (only right channel worked), this opamp is soldered on the mainboard so is difficult to replace, so I disconnected the supply to it for safety.
Both L en R XLR output for summing works fine.
Al channels was fully tested aswell.
Sweet sounding unit at unbeatable sound/channel/price ratio.
Sale because need cash for a pair of Dpa mics,
International buyers outside UE ask for shipping cost.Vendo Presonus M80, transformadores originales Jensen, operacionales cambiados por ADA4627 Fet de ultima generacion por recomendacion de Jim Williams (Audio upgrades).
https://www.gearslutz.com/board/7672513-post29.html
(subire mas fotos en breve).
8 previos de alta calidad, calidos y musicales por los trafos Jensen. (Copia del previo Hardy).La fuente original se estropeo por un cortocircuito en el conector de alimentacion al Presonus. El conector esta resoldado con cable termoretractil (no venia con proteccion, asi que cosa a tener en cuenta el que este buscando un M80 es un punto debil, ya que los cables no vienen aislados y con el tiempo pueden llegar a tocarse, y la fuente original no viene protegida contra cortocircuito). He sustituido la fuente por una SoundCraft CPS 150, mucho mejor que la original, sobredimensionada, y protegida contra cortocircuito (en caso de cortocircuito se apagan ambas salidas). Solo la fuente vale entre 150-200 en ebay.
La fuente esta ajustada en los puntos de ajuste interno del previo en +15 y -15 , ajuste fino y estable para estos operacionales que trabajan a menor tension que los originales Ne5534.
El circuito de salida de auriculares ya que solo funcionaba el lado derecho, y esta soldado en la placa principal y dificil de cambiar.asi que le he desconectado la alimentacion por seguridad.
La salida XLR del bus L R para usarlo como sumador funciona perfectamente ambos canales.
Todos los previos testeados con phanton.Oportunidad, sonido musical y calido, y relacion canales/calidad/precio de ganga.
vendo para conseguir caja para comprar unos microfonos Dpa.