zappulse evaluation kit - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th July 2002, 01:51 PM   #1
swede is offline swede  Switzerland
diyAudio Member
 
swede's Avatar
 
Join Date: Sep 2001
Location: Geneva, Switzerland
Default ZAPpulse evaluation kit!!! 200W 90% efficiency

Hi,

At LCAudio in Denmark, they sell evaluation kits for their ZAPpulse power amplifier. It is a Pulse Width Modulation amplifier, which send out a series of pulses of maximum amplitude (40 - 60 volts) to the speaker at about 50 - 100Mhz.

Click the image to open in full size.

I auditioned the amplifier yesterday together with an Audiofile friend of mine. Both of us was astonished. We listened to a whole bunch of CD's, using speakers we have listened to before. I was amazed.

As you see on the picture, the output board is not bigger than a credit card, and there is almost no need for cooling. LCAudio claims the construction to be 90% efficient.

The part of the kit that takes the largest space is the powersupply. I'm about to buy a kit, integrating it with a set of speaker cables, using an external powersupply. It will be slick.

For more information, see: http://www.lcaudio.dk

I'll keep you posted as soon as I get a kit.

Best regards,
//magnus
  Reply With Quote
Old 27th July 2002, 12:24 PM   #2
km is offline km
diyAudio Member
 
Join Date: May 2001
Location: dk
hi.

you "add" for lc audio is very much different from others i have seen around on the net , including danish usenet groups.

the verdict has been from dull , useless etc. to good russian radio receiver (not to mention transmitter)

50-100 mHz , that is the noise not the modulated audio

i thought and have heard it a lot more broadband (the noise i mean)

k madsen - cadaudio.dk
  Reply With Quote
Old 27th July 2002, 03:42 PM   #3
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
The proper test is the personal long term listening test.
Magnus I wish you good luck with your kit, and I/we are keen to hear of the results.

Regards, Eric.
  Reply With Quote
Old 27th July 2002, 03:54 PM   #4
km is offline km
diyAudio Member
 
Join Date: May 2001
Location: dk
hi.

i agree , there just seems to be a huge difference in opinion from those who sell them and those who dont, i dont know what relation magnus has to lc audio just looked like an add a lot to me.

it would make sense to write about it after having performed the long term tests.

whether the verdict below was based on long term tests or not is not very clear:

snip from dk.teknik.lyd

"Deaster" <frankatnasa@hotmail.com> wrote in message
news:a6a3l7$rd4$1@sunsite.dk...
> "Antowo" <Antowo@nonags.com> skrev i en meddelelse
> news:gp3h8ukujkqeup6kdlcohhi8dm87du3clf@4ax.com...
> >
> > Hej,
> > Jag köpte en LC Audio pulse samplifier, som jag håller på att
> > utvärdera.
> > Det vore intressant att höra någon annans värdering av den!
> >
> > Antowo

Jeg har da hørt den engang.. Som forstærker syntes jeg ikke den imponerede..
Men den var en udemærket modtager af AM radio på sine store spoler.. Den
hylede og pev. Så kunne man vippe spolerne lidt og så modtage forskellige
stationer

----------------------------

feel free to translate it to english.

best regards - k madsen - cadaudio.dk

ps. a 310$ introduction price seems a bit high to me (estimated parts cost $25 or so)

i would be surprised if the next price will be more than $100
  Reply With Quote
Old 27th July 2002, 04:22 PM   #5
swede is offline swede  Switzerland
diyAudio Member
 
swede's Avatar
 
Join Date: Sep 2001
Location: Geneva, Switzerland
Hi,

I have not yet bought an evaluation kit yet, but will most likely do so shortly.

Sorry if my post looked like an add to you, but that was not my intention. My first impression of the ZAPpulse was that good. We'll see how it turns out when I have one for myself.

I have no connection to LC Audio whatsoever. But I thought someone might be interested, since I was so impressed.

When I've built mine, I'll let you know more about my impressions.

Best regards,
//magnus
  Reply With Quote
Old 27th July 2002, 04:39 PM   #6
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
Hi K madsen, Magnus is just saying that he got to hear the LC Audio soloution and that he is impressed.
And between the lines that he has not heard your soloution.
Copenhagen and Sweden are not very far apart, so perhaps you should invite him to audition your gear, and do a comparison and report the result to the forum, and both of you give constructive criticisms in order to advance digital audio.

Regards, Eric.
  Reply With Quote
Old 27th July 2002, 04:53 PM   #7
km is offline km
diyAudio Member
 
Join Date: May 2001
Location: dk
hi eric.

in all respect i think you should let magnus speak for himself , i have no problems understanding what he is saying (writing).

what he says "between the lines" must be your own perception , i did not mention it and neither did he, if we want to do like you suggest im sure we can work it out.

you seem to put words in my mouth , please dont.

again i suggest that you let me speak for myself , im pretty sure magnus can understand what i say (write) , but lets agree we ask for your help in "translating" if required , ok?

magnus , thanks for your posting , it clarifies the matter to me.

best regards - k madsen - cadaudio.dk

ps. so far we did something like that with our modules and icepower ones , that gave me lots of angry (to say the least )emails from av-reality and a few others , so i think i will consider it a bit more...
  Reply With Quote
Old 27th July 2002, 05:07 PM   #8
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
Hi Km, perhaps YOU should transalate that e-mail quote into English so that we can all share.
We are of open minds here and mature enought to discriminate SPAM.
"The proof is in the eating".

Regards, Eric.
  Reply With Quote
Old 27th July 2002, 05:27 PM   #9
km is offline km
diyAudio Member
 
Join Date: May 2001
Location: dk
hi.

eric , it was not an email it was a posting on usenet (dk.teknik.lyd) as previously stated.

i would prefer someone else translated it , you for one allready read things "betweeen the lines" in magnus´ posting and read motives in my posting that are shall we say a bit far fetched.

there are several readers here who understand and speak danish and swedish so i think i will let someone else translate it.

best regards - k madsen - cadaudio.dk

ps. i think i will limit myself to repplying to things that are in the postings and not "between the lines" , may i suggest that you do the same....
  Reply With Quote
Old 27th July 2002, 05:48 PM   #10
diyAudio Member
 
mrfeedback's Avatar
 
Join Date: Feb 2002
Location: Perth, Australia.
Default Re: ZAPpulse evaluation kit!!! 200W 90% efficiency

Quote:
Originally posted by swede
Hi, I auditioned the amplifier yesterday together with an Audiofile friend of mine. Both of us was astonished. We listened to a whole bunch of CD's, using speakers we have listened to before. I was amazed.
I'm about to buy a kit, integrating it with a set of speaker cables, using an external powersupply. It will be slick.
I'll keep you posted as soon as I get a kit.

Best regards,
//magnus
Regarding 'Betwen the lines', Magnus has not endorsed your product, because he either has not heard it, or if he has, does not like it.
I even gave you an opening for an invite to Magnus to audition your soloution, and maybe an A/B.
I think you are reading wrongly into my posting.

My posts are perfectly friendly.
If you go to the trouble of translating, we will appreciate.

Regards, Eric.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ZapPulse 2,1 Cobra2 Swap Meet 3 15th November 2011 08:59 AM
For sale Zappulse 2.3SE Stanray Swap Meet 2 26th January 2010 04:10 AM
ZapPulse 2.1 HELP!!!! Schaef Solid State 7 15th January 2004 10:56 AM


New To Site? Need Help?

All times are GMT. The time now is 12:56 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2