Zen.4 in a 4 Ohm Load?

Rino odorico · 17th September 2002, 02:09 PM

Hello, just wondering how a Zen.4 will work in a 4 Ohm load? Will it still sound good, or will I just waste my time using it in a 4 Ohm full range application?

Thanks,

Rino Odorico

kirc · 17th September 2002, 04:55 PM

With increased bias will work fine.
You just need a bigger heatsink.

best regards,
Leon

Rino odorico · 17th September 2002, 09:04 PM

Thanks Kirk, just wondering if it was worth my time (have a ton of great 4 Ohm speakers kicking around).

Don't know if I should post this question or start another thread.

What are people talking about when they say Zen.4 balanced...from what I can tell (just the way it has been described as running 2 PCB's to get 100 watts), do they mean bridged?

Rino Odorico

Nelson Pass · 17th September 2002, 11:14 PM

ZV4 shows a 4 ohm distortion curve, although perhaps it's
shown in ZV2... In any case it works fine with 2 amp bias.

kirc · 18th September 2002, 08:35 AM

Driving 4 ohm speaker on original Zen or Zen v2 is not a very good idea, but with Zen v4 (with Aleph current source), this is not problem in my opinion. Just look at this figure (as Nelson said

best regards,
Leon

kristijan-k · 18th September 2002, 09:06 AM

Hello Odorico,

I tried Zen-V4 with 4 Ohm load.
It worked just fine.

Original Zen don't work ok with 4 Ohm load.

Best regards,
Kristijan Kljucaric
http://web.vip.hr/pcb-design.vip

Rino odorico · 18th September 2002, 02:00 PM

Great, thanks again for all of the replys guys! Just building my speaker cabs as we speak. Amp comes next...having lots of fun doing the DIY thing. Great people and information here...all of you make everyone feel welcome.

Rino Odorico

jh6you · 18th September 2002, 02:05 PM

Leon

I could not understand this: "Driving 4 ohm speaker on ... Zen v2
is not a very good idea..."

I think your Figures are copies from the article of ZV2.
With 4-ohm speaker, Fig. 8 shows distortion rate of 0.4 at 9W
and 0.9 at 30W. These really matter...?

ZV4-ZV2=2. I.e. ZV4 has two more. One is input buffer and
another is supply voltage regulator. But, they have the same
active current source (=Aleph current source). No...?

JH

kirc · 18th September 2002, 03:04 PM

Yes they have !
I was think about Zen V2 (fig. 2. without Aleph Current Source). Of course Zen V2 with Aleph Current Source is the same (except input buffer) with Zen V4.

Sorry about that.

best regards,
Leon

17th September 2002, 02:09 PM	#1
Rino odorico diyAudio Member Join Date: Aug 2002 Location: Toronto, Canada	Zen.4 in a 4 Ohm Load? Hello, just wondering how a Zen.4 will work in a 4 Ohm load? Will it still sound good, or will I just waste my time using it in a 4 Ohm full range application? Thanks, Rino Odorico

17th September 2002, 04:55 PM	#2
kirc diyAudio Member Join Date: Aug 2001 Location: Slovenia	With increased bias will work fine. You just need a bigger heatsink. best regards, Leon __________________ Music is a part of my life, DIY is my life.

17th September 2002, 09:04 PM	#3
Rino odorico diyAudio Member Join Date: Aug 2002 Location: Toronto, Canada	Thanks Kirk! Thanks Kirk, just wondering if it was worth my time (have a ton of great 4 Ohm speakers kicking around). Don't know if I should post this question or start another thread. What are people talking about when they say Zen.4 balanced...from what I can tell (just the way it has been described as running 2 PCB's to get 100 watts), do they mean bridged? Rino Odorico

18th September 2002, 03:04 PM	#9
kirc diyAudio Member Join Date: Aug 2001 Location: Slovenia	Yes they have ! I was think about Zen V2 (fig. 2. without Aleph Current Source). Of course Zen V2 with Aleph Current Source is the same (except input buffer) with Zen V4. Sorry about that. best regards, Leon __________________ Music is a part of my life, DIY is my life.

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17th September 2002, 11:14 PM	#4
Nelson Pass The one and only Join Date: Mar 2001	ZV4 shows a 4 ohm distortion curve, although perhaps it's shown in ZV2... In any case it works fine with 2 amp bias.

18th September 2002, 09:06 AM	#6
kristijan-k diyAudio Member Join Date: Mar 2002 Location: CROATIA	Hello Odorico, I tried Zen-V4 with 4 Ohm load. It worked just fine. Original Zen don't work ok with 4 Ohm load. Best regards, Kristijan Kljucaric http://web.vip.hr/pcb-design.vip

18th September 2002, 02:00 PM	#7
Rino odorico diyAudio Member Join Date: Aug 2002 Location: Toronto, Canada	Great, thanks again for all of the replys guys! Just building my speaker cabs as we speak. Amp comes next...having lots of fun doing the DIY thing. Great people and information here...all of you make everyone feel welcome. Rino Odorico

18th September 2002, 02:05 PM	#8
jh6you Account Disabled Join Date: Aug 2002 Location: Near to the Pacific Ocean	Leon I could not understand this: "Driving 4 ohm speaker on ... Zen v2 is not a very good idea..." I think your Figures are copies from the article of ZV2. With 4-ohm speaker, Fig. 8 shows distortion rate of 0.4 at 9W and 0.9 at 30W. These really matter...? ZV4-ZV2=2. I.e. ZV4 has two more. One is input buffer and another is supply voltage regulator. But, they have the same active current source (=Aleph current source). No...? JH

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