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Amplifiers Rescue Gods

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EmPro View Drop Down
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    Posted: 18 January 2023 at 6:59pm
Future project...2x100w rms Hitachi Lateral Mosfet Amplifier with plenty of extra capacity,new wire management and some nice binding posts,to much empty space in this amp Big smile photos with the amp finished will be soon Smile i didn't even started LOLLOL but will be much like in the photo:

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2023 at 6:29am
Ok - you have PM...   Smile
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Andylaser Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2023 at 2:12am
Loved those old BK Electronics amps. Simple, reliable and built like the proverbial brick shithouse.
"music so loud, that if we move in next door to you; your lawn will die" - Lemmy
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Post Options Post Options   Thanks (0) Thanks(0)   Quote EmPro Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2023 at 7:00pm
Well....i have good news...bad news and some betwin them LOLLOL

The good news,i have Matched Hitachi's by H H Electronics removed 10 years ago from an V800 (driver board was totally rosted,i made it to work but i didn't like the way it looked so i made it for parts.

The bad news,i know for sure i have three pairs of them..but i only find two pairs (that's because i have 150 boxes with parts and spares and god know what more because i always travel from UK to Romania and back) but i will find the other pair for sure,all the rest of them are running in other mosfet amps for years.

And betwin bad and good is the fact that i'm currently in Romania now,and to send them from here will cost a lot and will take forever to get to you,but next month i'll be back in UK (London) and i can send them to you via Royal Mail 1St.

Here a photo of them:

Cheers
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Post Options Post Options   Thanks (0) Thanks(0)   Quote EmPro Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2023 at 3:56pm
Yes i do mate,do you need pairs?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2023 at 1:24pm
Do you have any spare Hitachis not doing anything useful? I need a couple, or 4...  Smile Smile Smile 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote EmPro Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2023 at 12:56pm
Well...it works good,but can be better TongueWink so.....time for some Hitachi's to take place in my beloved BK MXF900.


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Post Options Post Options   Thanks (0) Thanks(0)   Quote EmPro Quote  Post ReplyReply Direct Link To This Post Posted: 14 January 2023 at 7:55pm
Nice infos,cheersClap
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 14 January 2023 at 7:52pm

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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Post Options Post Options   Thanks (0) Thanks(0)   Quote EmPro Quote  Post ReplyReply Direct Link To This Post Posted: 14 January 2023 at 6:48pm
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 Confused obviously the fresh thermal paste is my job LOL


Edited by EmPro - 14 January 2023 at 6:53pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote EmPro Quote  Post ReplyReply Direct Link To This Post Posted: 14 January 2023 at 6:35pm
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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Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 14 January 2023 at 6:12pm
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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