Aleph L vs Aleph P vs BOSOZ

vdi_nenna · 28th September 2003, 02:02 AM

I just got the boards for the BOSOZ. Am I missing out by not trying one of the others? Or is it a matter of taste between these 3 preamps.

What's your opinion?

Thanks,

Vince

moe29 · 28th September 2003, 02:16 AM

Since you have the BOSOZ boards already go ahead and build it...
you won't be let down, it's a fine sounding pre.

don't go second guessing yourself, life's to short.

ElectroNick · 28th September 2003, 07:34 AM

I agree Moe, (i'm building the BoSoZ too)

Vince, if you want to do some tweaking you could always "X" the BoSoZ. (search for Henrik on this forum and you'll find the schematic)

Good luck with building...

ps watch out for the size of heatsinks in the power supply. If you use the power board, the space on it is too small. My heatsinks reach allmost boiling temperatures

Grtz,
Nick

moe29 · 28th September 2003, 03:10 PM

agreed: as to the power supply heatsinks...

i had to modify my power supply PCB to be able to handle bigger
heatsinks for the regulating fets. It wasn't that hard to do, but
seemed the prudent thing to do.

tomchaoda · 29th September 2003, 06:15 PM

My BZLS (or BOSOZ) PCB is on the way. Can anyone who has built one share how you use your level control? The original design can use either on the input side or on the output side!

One diyer told me he put on both input and output, but he did not see any benefit with it and suggest me use the input side. Any thought of this?

Also, do I really need to use the expensive 4 decks attenuator (like the DACT CT2-4) for a balanced stereo output. What's the cheaper solution, yet provide reasonable good sound?

Thanks

Thomas

vdi_nenna · 30th September 2003, 01:09 AM

Put the control on the output, so noise is also lowered when you adjust for the volume.

badman · 30th September 2003, 01:51 AM

Quote:

Originally posted by vdi_nenna
Put the control on the output, so noise is also lowered when you adjust for the volume.

vdi- bad idea. You wind up effectively raising the output impedance severely. That's why volume controls are put before the circuit in these things.

vdi_nenna · 30th September 2003, 04:10 AM

That's not what I remember reading in NP's artical.

Then again I could be wrong.

protos · 30th September 2003, 12:23 PM

Quote:

Originally posted by tomchaoda
My BZLS (or BOSOZ) PCB is on the way. Can anyone who has built one share how you use your level control? The original design can use either on the input side or on the output side!

One diyer told me he put on both input and output, but he did not see any benefit with it and suggest me use the input side. Any thought of this?

Also, do I really need to use the expensive 4 decks attenuator (like the DACT CT2-4) for a balanced stereo output. What's the cheaper solution, yet provide reasonable good sound?

Thanks

Thomas

Nelson prefers the pot on the output side .A solution would be to get two Alps blue velvet and rig them up with a gear link.Cheaper than the 200usd dact.I think a member posted some pictures here of a set up like that.

protos · 30th September 2003, 12:29 PM

have a look balanced volume control

28th September 2003, 02:02 AM	#1
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA	Aleph L vs Aleph P vs BOSOZ I just got the boards for the BOSOZ. Am I missing out by not trying one of the others? Or is it a matter of taste between these 3 preamps. What's your opinion? Thanks, Vince

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28th September 2003, 02:16 AM	#2
moe29 diyAudio Member Join Date: Dec 2002 Location: Florida	Since you have the BOSOZ boards already go ahead and build it... you won't be let down, it's a fine sounding pre. don't go second guessing yourself, life's to short.

28th September 2003, 07:34 AM	#3
ElectroNick diyAudio Member Join Date: Dec 2002 Location: The Netherlands	I agree Moe, (i'm building the BoSoZ too) Vince, if you want to do some tweaking you could always "X" the BoSoZ. (search for Henrik on this forum and you'll find the schematic) Good luck with building... ps watch out for the size of heatsinks in the power supply. If you use the power board, the space on it is too small. My heatsinks reach allmost boiling temperatures Grtz, Nick

28th September 2003, 03:10 PM	#4
moe29 diyAudio Member Join Date: Dec 2002 Location: Florida	agreed: as to the power supply heatsinks... i had to modify my power supply PCB to be able to handle bigger heatsinks for the regulating fets. It wasn't that hard to do, but seemed the prudent thing to do.

29th September 2003, 06:15 PM	#5
tomchaoda diyAudio Member Join Date: Sep 2003 Location: New Jersey	My BZLS (or BOSOZ) PCB is on the way. Can anyone who has built one share how you use your level control? The original design can use either on the input side or on the output side! One diyer told me he put on both input and output, but he did not see any benefit with it and suggest me use the input side. Any thought of this? Also, do I really need to use the expensive 4 decks attenuator (like the DACT CT2-4) for a balanced stereo output. What's the cheaper solution, yet provide reasonable good sound? Thanks Thomas

30th September 2003, 01:09 AM	#6
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA	Put the control on the output, so noise is also lowered when you adjust for the volume.

30th September 2003, 04:10 AM	#8
vdi_nenna diyAudio Member Join Date: Oct 2000 Location: PA, USA	That's not what I remember reading in NP's artical. Then again I could be wrong.

30th September 2003, 12:29 PM	#10
protos diyAudio Member Join Date: Mar 2002 Location: Athens+Addis Ababa	have a look balanced volume control

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