What Pass designs have you built?

ggetzoff · 22nd October 2009, 05:11 PM

Just as the title states, list the Pass designs that you've built and what loudspeaker you are using with them.

Additionally, what I think this forum really needs is some kind of step-by-step process to help folks successfully build, and test these amps. Also, it would include a good list of hardware suppliers (ie. chassis, ps, surface mounts, ect.) in a sticky. I'll be happy to help with this process in any way that I can.

I've been quietly reading as many post as I can to do my first build (Aleph J) and I've done projects like this before, but it's a bit daunting for the first-timer. What I really see is a lot of folks talking about what they've done, but only through reading many, many post do you understand what needs to be done in each area (i.e. board stuffing, rectifier cap choice, ect.)

Thanks,

Greg

Lee35210 · 22nd October 2009, 05:37 PM

Built:First Watt B1
F5 (in Progress)
El Pipe-O's (8" versions)
Speakers: MCM Nearfield Monitors( from early mid 80's)

Mark Allen · 22nd October 2009, 10:12 PM

A pair of Aleph 2's were my first DIY project. Then... Mini-A, Aleph 3 for a friend, Aleph 30(Peter Daniels board), Aleph L line stage. Also test built and verified a number of Aleph boards for Brian GT. I still have them all here!

Mark

toufu · 22nd October 2009, 10:25 PM

Aleph 30, F3 and F5 with my Zu Druids speakers.

Out of those, F5 is my favorite. I am using it without the current limiting circuit and the difference is not subtle.

I am building the Aleph J or F4 next. Anybody got any ideas on which way I should go?

Magura · 22nd October 2009, 10:29 PM

Zen 1,2,3,4,6,7,9, Aleph2, AX100, BOSOZ(any variation you can think of), BOZ, plus a mix of the above

Magura

slam · 10:55 PM

Built: F5, B1

Speakers: McIntosh XRT-22

F5 was my first amp construction project. Nelson and Cviller's document was very helpful.

MEGA-amp · 11:16 PM

Zen - 4amps/50V - blew it up
Aleph 5, 3 - various voltages and bias settings - blew them all up
Mini-Aleph - blew it up - twice
BOZ
F5 - burned up when set to 3amps/35V
F2-Lite
Currently listening to 25W SOZ, HOT!!! - eventually will blow up, driving FE127E's in planet10-hifi's Classic Golden-Ratio (GR) Fonken cabs
Built AlephJ - yet to be fired up, high biased/water-cooled - hopefully it won't blow up

Beftus · 23rd October 2009, 12:28 AM

Built: mini Aleph

Work in progress: F5 (amp PCB's finished)

Soon to start building: B1 (waiting for PCB)

Will hopefully one day have a biamped system using: B1, mini Aleph and F5

Bill Fuss · 23rd October 2009, 12:40 AM

So far, A5, F5, A30, 2 AJs, P1.7, Boz.

Spkrs,Seas Thors(cabs rebuilt once, x-ovrs three times), Zaph SR-71s, Wide baffle three ways similar to the Poor Man's Strads

gl · 23rd October 2009, 12:52 AM

In order:

A40
R4000
Stasis 2
AX100
F1
AX100J
UGS based line amp (not Cheffs)

22nd October 2009, 05:11 PM	#1
ggetzoff diyAudio Member Join Date: Nov 2004 Location: Southwest	What Pass designs have you built? Just as the title states, list the Pass designs that you've built and what loudspeaker you are using with them. Additionally, what I think this forum really needs is some kind of step-by-step process to help folks successfully build, and test these amps. Also, it would include a good list of hardware suppliers (ie. chassis, ps, surface mounts, ect.) in a sticky. I'll be happy to help with this process in any way that I can. I've been quietly reading as many post as I can to do my first build (Aleph J) and I've done projects like this before, but it's a bit daunting for the first-timer. What I really see is a lot of folks talking about what they've done, but only through reading many, many post do you understand what needs to be done in each area (i.e. board stuffing, rectifier cap choice, ect.) Thanks, Greg __________________ Airline Pilot-If it's not Boeing I'm not going. "Brain as big as a planet..." {sic} Nelson Pass

22nd October 2009, 05:37 PM	#2
Lee35210 diyAudio Member Join Date: Jan 2004 Location: Irondale, AL	Built:First Watt B1 F5 (in Progress) El Pipe-O's (8" versions) Speakers: MCM Nearfield Monitors( from early mid 80's) __________________ Been there, Heard that, Forgot what I was listening to!

22nd October 2009, 10:29 PM	#5
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	Zen 1,2,3,4,6,7,9, Aleph2, AX100, BOSOZ(any variation you can think of), BOZ, plus a mix of the above Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

22nd October 2009, 10:35 PM	#6
slam diyAudio Member Join Date: Jan 2005 Location: CA	Built: F5, B1 Speakers: McIntosh XRT-22 F5 was my first amp construction project. Nelson and Cviller's document was very helpful. Last edited by slam; 22nd October 2009 at 10:55 PM.

22nd October 2009, 11:09 PM	#7
MEGA-amp diyAudio Member Join Date: Oct 2003 Location: Newington, CT	Zen - 4amps/50V - blew it up Aleph 5, 3 - various voltages and bias settings - blew them all up Mini-Aleph - blew it up - twice BOZ F5 - burned up when set to 3amps/35V F2-Lite Currently listening to 25W SOZ, HOT!!! - eventually will blow up, driving FE127E's in planet10-hifi's Classic Golden-Ratio (GR) Fonken cabs Built AlephJ - yet to be fired up, high biased/water-cooled - hopefully it won't blow up Last edited by MEGA-amp; 22nd October 2009 at 11:16 PM.


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22nd October 2009, 10:12 PM	#3
Mark Allen diyAudio Member Join Date: Jan 2008 Location: Bountiful, You-Taw	A pair of Aleph 2's were my first DIY project. Then... Mini-A, Aleph 3 for a friend, Aleph 30(Peter Daniels board), Aleph L line stage. Also test built and verified a number of Aleph boards for Brian GT. I still have them all here! Mark

22nd October 2009, 10:25 PM	#4
toufu diyAudio Member Join Date: Jun 2008 Location: San Francisco	Aleph 30, F3 and F5 with my Zu Druids speakers. Out of those, F5 is my favorite. I am using it without the current limiting circuit and the difference is not subtle. I am building the Aleph J or F4 next. Anybody got any ideas on which way I should go?

23rd October 2009, 12:28 AM	#8
Beftus diyAudio Member Join Date: Nov 2008 Location: Netherlands	Built: mini Aleph Work in progress: F5 (amp PCB's finished) Soon to start building: B1 (waiting for PCB) Will hopefully one day have a biamped system using: B1, mini Aleph and F5

23rd October 2009, 12:40 AM	#9
Bill Fuss RIP Join Date: Oct 2005 Location: Central Florida	So far, A5, F5, A30, 2 AJs, P1.7, Boz. Spkrs,Seas Thors(cabs rebuilt once, x-ovrs three times), Zaph SR-71s, Wide baffle three ways similar to the Poor Man's Strads

23rd October 2009, 12:52 AM	#10
gl diyAudio Member Join Date: Dec 2003 Location: Sierra Foothills - California	In order: A40 R4000 Stasis 2 AX100 F1 AX100J UGS based line amp (not Cheffs)

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