Electron Kinetics Eagle 7A

mrshow4u · 23rd August 2006, 11:44 PM

Waaaay back in the day, a guy named John Iverson built an amp called an Eagle 7A. John disappeared though mysterious circumstances. I've repaired one since, just to replace open filter caps. I believe it was a power supply swinging amp. (a non center tapped supply with an amp that had a grounded output that would "swing" the filter to where it was needed) ....kinda like some of the Crown Macro-Tech amps. What I was wondering is if anybody had, and would be willing to e-mail a schematic for that Eagle 7A. It was an interesting beast. It ran circles around the McIntosh MA-2300 it was AB'd against.

Thanks,
Jon

P.S. I searched through previous threads but came up empty. I apologize if this is a well worn subject and I missed it.

mlloyd1 · 24th August 2006, 12:40 AM

you're not the only one with some interest in this beast.
i've been looking for a few years and found nothing yet.
hopefully, you'll have more luck than me ...

mlloyd1

mrshow4u · 24th August 2006, 12:49 AM

Thanks mlloyd1. If I get lucky outside the forum, I'll send you a scan

ampliton · 8th November 2006, 03:50 AM

Hi Folks,

Guess what? I just got an Electron Kinetics Eagle 7A on my bench, and it has greater than 2V dc offset on both channels. Does anybody know how to adjust the DC offset? There are 7 pots on each channels that requires some procedure to do the job. Thank in advance for any info!

Regards,

Adam

LineSource · 8th November 2006, 04:02 AM

I have two Eagle 7A in wooden crates that were replaced by Krell KSA250s, so I would also really appreciate a schematic to keep them running or as insurance to help sell them. I sent both to John Iverson for a final upgrade just before John dropped out of sight.

The Eagle 7A was a great Apogee bass amp back in the day as each channel could put out 1,400 watts into 2 ohms. The EI core transformers were a weakness, as they started to buzz and needed to be re-gooped.

opnly bafld · 8th November 2006, 04:46 AM

Try eagle-audio.com

ampliton · 9th November 2006, 06:45 PM

Dear opnly bafld,

Thanks for the info, and I have contacted Russel Sherwood (John Iverson's right hand man) who runs the EKSC for the service manual of the Eagle 7A. There are actually 8 pots per channel to calibrate the beast.

regards,

Adam

Zen Mod · 30th June 2011, 12:12 PM

old thread ......

anyone had a luck with schm or SM ?

vtomike · 18th August 2011, 02:24 AM

Old thread but i have a schematic for the 7a. Not sure how to upload it.

RJM1 · 18th August 2011, 07:34 AM

Schematic at first post in this thread.
Grounded Bridge amp, Eagle 7

23rd August 2006, 11:44 PM	#1
mrshow4u diyAudio Member Join Date: Jul 2006	Electron Kinetics Eagle 7A Waaaay back in the day, a guy named John Iverson built an amp called an Eagle 7A. John disappeared though mysterious circumstances. I've repaired one since, just to replace open filter caps. I believe it was a power supply swinging amp. (a non center tapped supply with an amp that had a grounded output that would "swing" the filter to where it was needed) ....kinda like some of the Crown Macro-Tech amps. What I was wondering is if anybody had, and would be willing to e-mail a schematic for that Eagle 7A. It was an interesting beast. It ran circles around the McIntosh MA-2300 it was AB'd against. Thanks, Jon P.S. I searched through previous threads but came up empty. I apologize if this is a well worn subject and I missed it. __________________ ".........These go to eleven"

24th August 2006, 12:49 AM	#3
mrshow4u diyAudio Member Join Date: Jul 2006	Thanks mlloyd1. If I get lucky outside the forum, I'll send you a scan __________________ ".........These go to eleven"

30th June 2011, 12:12 PM	#8
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	old thread ...... anyone had a luck with schm or SM ? __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; BAF Forum & Gallery;I'm dumb

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24th August 2006, 12:40 AM	#2
mlloyd1 diyAudio Member Join Date: Feb 2001 Location: illinois	you're not the only one with some interest in this beast. i've been looking for a few years and found nothing yet. hopefully, you'll have more luck than me ... mlloyd1

8th November 2006, 03:50 AM	#4
ampliton diyAudio Member Join Date: Jan 2003 Location: Los Angeles	Hi Folks, Guess what? I just got an Electron Kinetics Eagle 7A on my bench, and it has greater than 2V dc offset on both channels. Does anybody know how to adjust the DC offset? There are 7 pots on each channels that requires some procedure to do the job. Thank in advance for any info! Regards, Adam

8th November 2006, 04:02 AM	#5
LineSource diyAudio Member Join Date: Sep 2003 Location: SiliconValley	I have two Eagle 7A in wooden crates that were replaced by Krell KSA250s, so I would also really appreciate a schematic to keep them running or as insurance to help sell them. I sent both to John Iverson for a final upgrade just before John dropped out of sight. The Eagle 7A was a great Apogee bass amp back in the day as each channel could put out 1,400 watts into 2 ohms. The EI core transformers were a weakness, as they started to buzz and needed to be re-gooped.

8th November 2006, 04:46 AM	#6
opnly bafld diyAudio Member Join Date: Nov 2006 Location: Illinois	Try eagle-audio.com

9th November 2006, 06:45 PM	#7
ampliton diyAudio Member Join Date: Jan 2003 Location: Los Angeles	Dear opnly bafld, Thanks for the info, and I have contacted Russel Sherwood (John Iverson's right hand man) who runs the EKSC for the service manual of the Eagle 7A. There are actually 8 pots per channel to calibrate the beast. regards, Adam

18th August 2011, 02:24 AM	#9
vtomike diyAudio Member Join Date: Jan 2011	Old thread but i have a schematic for the 7a. Not sure how to upload it.

18th August 2011, 07:34 AM	#10
RJM1 diyAudio Member Join Date: Jan 2010 Location: Titusville, Fl.	Schematic at first post in this thread. Grounded Bridge amp, Eagle 7

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