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Amplifiers Rescue Gods |
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EmPro 
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Joined: 26 June 2020 Status: Offline Points: 356 |
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 Posted: 08 September 2022 at 3:30pm |
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I'll look when i get home,maybe i still have some HH V series schematics to see,and bias depends of what outputs you have and number of them....Hitachi's are different from SML or Exicon,if you bias sml-s of exicon-s like hitachi-s they will blow up in 10min.
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EmPro Audio
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Seca23
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Joined: 08 September 2022 Location: Romania Status: Offline Points: 3 |
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Posted: 08 September 2022 at 3:56pm |
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The amp has 5 pairs of sk176 /sj56 per channel.
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EmPro
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Posted: 13 January 2023 at 7:45pm |
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Unfurtunate i don't find or posses any schematics for that amplifier :/
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EmPro Audio
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EmPro
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Posted: 13 January 2023 at 7:49pm |
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Any ideea guys who or why made this amplifier?
 sounds nice to be honest,the output modules are SANKEN.  |
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EmPro Audio
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EmPro
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Posted: 13 January 2023 at 8:03pm |
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As i promise....my CS800 Commercial Series fully restored,this one bench tested 635wpc on 4 ohm 30hz before the DTT limiter kicks in....so...not quite 400w as stated(maybe 2x400w driveing both ch at the same time,didn't try that)
 however if you switch off the DTT limiter....god be with your speakers..as it skyrocks in power and THD so i would reccomend to live it on and also it performs way better in low frequencies.       Edited by EmPro - 17 January 2023 at 8:12pm |
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EmPro Audio
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Elliot Thompson
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Joined: 02 April 2004 Location: United States Status: Offline Points: 5086 |
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Posted: 14 January 2023 at 6:12pm |
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Peavey purposely underrated their amplifiers at that time. Their were many that felt Peavey amplifiers did not meet their specs. It was based purely on bias hatred towards Peavey. I own a good amount of CS 800s (yours is the last series before they downsized to the 3- Rack version). If you ever happen to find their first series (No DDT and will say Overload above the LED Indicators) you will find RCA TO-3's on the heat sinks. The first series also weighs more than the model you posses. And yes, for Bass, Peavey Amplifiers are not shy playing very low frequencies. My second choice for a sub-low Bass Amplifier (First being Crown).
Best Regards,
Edited by Elliot Thompson - 14 January 2023 at 6:20pm |
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Elliot Thompson
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EmPro
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Posted: 14 January 2023 at 6:35pm |
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Indeed i have the last generation of CS800c 4U before they moved to 3u and tottaly different output stage,i didn't have the luck to find the first ones without the DTT limiter and RCA-s outputs,i bet those are even stronger then this one,however i do have a BGW 750B with RCA-s inside and Motorola's npn and pnp that push the same amount of power as this C800c in the same frequency range,also running better in low's.
Edited by EmPro - 14 January 2023 at 6:36pm |
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EmPro Audio
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EmPro
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Posted: 14 January 2023 at 6:48pm |
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The outputs in my BGW 750B the Motorola ones are SJ-s i guess peavey's mark,i don't know if this amplifier comes with this mix or has been repaired before
 obviously the fresh thermal paste is my job    Edited by EmPro - 14 January 2023 at 6:53pm |
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EmPro Audio
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Elliot Thompson
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Joined: 02 April 2004 Location: United States Status: Offline Points: 5086 |
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Posted: 14 January 2023 at 7:52pm |
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Jack Sondermeyer is the founder of the design. He sold the design to Peavey and BGW. Hartley Peavey was so impressed with the design, he hired Jack to make their amplifiers. Below are Jack Sondermeyer's Patents. Jack worked for RCA before moving to Peavey.
https://patents.justia.com/inventor/jack-c-sondermeyer
Best Regards, Edited by Elliot Thompson - 14 January 2023 at 7:54pm |
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Elliot Thompson
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EmPro
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Posted: 14 January 2023 at 7:55pm |
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Nice infos,cheers
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EmPro Audio
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EmPro
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Posted: 15 January 2023 at 12:56pm |
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Well...it works good,but can be better
  so.....time for some Hitachi's to take place in my beloved BK MXF900.   |
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EmPro Audio
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Earplug
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Joined: 03 January 2012 Location: Europe Status: Offline Points: 7005 |
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Posted: 15 January 2023 at 1:24pm |
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Do you have any spare Hitachis not doing anything useful? I need a couple, or 4...  |
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Earplugs Are For Wimps!
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