Swordfishy/ASPEN FETZILLA power amp - Page 80

AKSA · 17th February 2012, 07:50 AM

That's it, guys, third group buy filled, I hope that my semis hold out......

I will examine my stock this weekend.

Many thanks,

Hugh

tome · 19th February 2012, 06:23 PM

I think i will join in this party with 2 or 4 boards....
chears
tome

ipolyakov · 20th February 2012, 04:06 AM

Hi Hugh,

Do we need to have any speaker protection circuit with this amplifier?

Thanks,
Igor

AKSA · 20th February 2012, 05:30 AM

Igor,

The only speaker protection I would use would be DC sense, so that any DC voltage more than +/-2V or so automatically disconnects the speaker.

This is a separate circuit, however, and it mandates use of a relay, which many say degrades the sound quality.

That, I've found, does depend on the relay. The Amplimo product is designed for it and sounds good, I'm told.

Omron make one specifically for this task, but it's hard to find.

I do not use speaker protection on small amps and have never had problems, but, of course, YMMV.

Cheers,

Hugh

tome · 21st February 2012, 09:37 AM

Hi Hugh
I was thinking that 20pcs is minimum to start GB#3! .... I just see that GB#3 is filled?
Hope that 2 boards more is not a problem.

best regards
tome

chalkandtalk · 21st February 2012, 11:13 AM

It will be a while before I can make up my boards so I don't mind letting Tome have mine.

tome · 21st February 2012, 03:42 PM

Thanks a LOT Chalkandtalk... you have a beer from me ..
Thanks again
Cheers
Tome

chalkandtalk · 21st February 2012, 04:27 PM

No worries mate

ajst2duk · 22nd February 2012, 05:24 AM

Hi team - I was lucky enough to stumble across this thread in time to snaffle a couple of boards - have boards/parts/case just need the time and motivation. It strikes me that with so many boards out already that there should be more comments on the sound/performance of this amp. The ones I've seen look promising so I can't wait. I was lucky enough to trial a Naksa 100 amp last week, that was fun. Roll on Fetzilla !

pinnocchio · 23rd February 2012, 06:00 AM

I finally was able to finish and power up one of the FetZilla and finished the second one but not powered yet...

With only one of them working I can't tell lots on the sound but I love what I'm hearing so far.

Will do a full write up once I have 50+ hours of burn in time.

Hugh, did you go through your semis?

Ciao!
Do

17th February 2012, 07:50 AM	#791
AKSA diyAudio Member Join Date: Sep 2001 Location: Melbourne, Australia	ULP........ THIRD Group Buy now FILLED!! That's it, guys, third group buy filled, I hope that my semis hold out...... I will examine my stock this weekend. Many thanks, Hugh __________________ Aspen Amplifiers P/L (Australia) www.aksaonline.com

20th February 2012, 04:06 AM	#793
ipolyakov diyAudio Member Join Date: Feb 2003 Location: Minneapolis	Speakers protection Hi Hugh, Do we need to have any speaker protection circuit with this amplifier? Thanks, Igor

20th February 2012, 05:30 AM	#794
AKSA diyAudio Member Join Date: Sep 2001 Location: Melbourne, Australia	STOP!! NO MORE ORDERS PLEASE!! Igor, The only speaker protection I would use would be DC sense, so that any DC voltage more than +/-2V or so automatically disconnects the speaker. This is a separate circuit, however, and it mandates use of a relay, which many say degrades the sound quality. That, I've found, does depend on the relay. The Amplimo product is designed for it and sounds good, I'm told. Omron make one specifically for this task, but it's hard to find. I do not use speaker protection on small amps and have never had problems, but, of course, YMMV. Cheers, Hugh __________________ Aspen Amplifiers P/L (Australia) www.aksaonline.com

23rd February 2012, 06:00 AM	#800
pinnocchio diyAudio Member Join Date: Sep 2010 Location: Montreal	I finally was able to finish and power up one of the FetZilla and finished the second one but not powered yet... With only one of them working I can't tell lots on the sound but I love what I'm hearing so far. Will do a full write up once I have 50+ hours of burn in time. Hugh, did you go through your semis? Ciao! Do __________________ PREAMPs : AMB α10 + USSPA \| LDR3x + USSPA \| AMPs: AMB β24 \| USSA5 \| FSSA2 \| MoFo \| FC-100 \| Modulus-686 \| SimpelStark+ \| DACs : Mirand AK4490 + Discrete Output \| Speakers : Troels Gravesen ATS-4 \| Sagwee LT V3 \|

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19th February 2012, 06:23 PM	#792
tome diyAudio Member Join Date: Apr 2010 Location: Macedonia	I think i will join in this party with 2 or 4 boards.... chears tome

21st February 2012, 09:37 AM	#795
tome diyAudio Member Join Date: Apr 2010 Location: Macedonia	Hi Hugh I was thinking that 20pcs is minimum to start GB#3! .... I just see that GB#3 is filled? Hope that 2 boards more is not a problem. best regards tome

21st February 2012, 11:13 AM	#796
chalkandtalk diyAudio Member Join Date: Jan 2006 Location: North west England	It will be a while before I can make up my boards so I don't mind letting Tome have mine.

21st February 2012, 03:42 PM	#797
tome diyAudio Member Join Date: Apr 2010 Location: Macedonia	Thanks a LOT Chalkandtalk... you have a beer from me .. Thanks again Cheers Tome

21st February 2012, 04:27 PM	#798
chalkandtalk diyAudio Member Join Date: Jan 2006 Location: North west England	No worries mate

22nd February 2012, 05:24 AM	#799
ajst2duk diyAudio Member Join Date: Apr 2010	Hi team - I was lucky enough to stumble across this thread in time to snaffle a couple of boards - have boards/parts/case just need the time and motivation. It strikes me that with so many boards out already that there should be more comments on the sound/performance of this amp. The ones I've seen look promising so I can't wait. I was lucky enough to trial a Naksa 100 amp last week, that was fun. Roll on Fetzilla !

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