Interesting Gainclone type amplifier?

misterresistor · 25th April 2004, 03:22 AM

Looks like an amp for speakers like it mounts inside the cabinet, but look at the IC their using. Anyone know about these guys? I could totally use this as my forte is in speakers, but I'm getting started with Gain Clones.

http://www.envisionelectronics.com

Nuuk · 25th April 2004, 09:27 AM

They look OK to me and the price is certainly not a rip off!

I personally don't like the idea of the amplification electronics inside the speaker cabinet but if you don't mind that, you could probably build some very nice active speakers with these modules.

And they use 'genuine' WIMA caps too!

uvodee · 25th April 2004, 09:50 AM

in this forum has build an amp with the 4766 before
NewbieChipGuy If my memory serves me well....

I thought the results were very good.
Seems that chip price is decent, 2x30 watts according to OnSemi

this one should be made in order to compare with the 3875

J-P

ir · 26th April 2004, 12:21 AM

i too have built an amp based on the LM4766. 40Watts per channel. it sounds noticably nicer then my LM1876 based amp (20W Stereo).

the chip is awesome - infact i even ordered 5 more of them so that i can experiement with bridged designs.

personally i don't know what eveyones phobia of the stereo IC's is?! they're brilliant (just remember to use a large heatsink). nothing beats them for simplicity of creating a stereo amplifier

there's a few pics at my site - sorry no good internal pics - i do have them , just haven't updated my site in yonks. the board design is EXACTLY the same as for my LM1876 as the chips are pin for pin compatible (altho the LM4766 needs a mute ressitor to take it out of mute) so you can get an idea of the layout by visiting the page for that amp

goodo
iR

EnvisionAudio · 26th April 2004, 05:32 AM

Interesting, those are my amplifiers - and my site! Thanks Mr. Resistor!

I'm kind of getting started with the 4766 as an entry level product aimed towards DIYers whose wives hate "ugly" amplifiers and for college kids that cannot afford to lose more space in their dorms.

I've sold a number of these already, though it's a surprise to see them here! I love em, personally (of course) and everyone that has bought one has been happy. That's why I do it!

I took the "genuine WIMA" out. YES, it was cheesy.

peranders · 26th April 2004, 06:42 AM

Nice work.

Very interestin price also. only 70 USD. Unfortunately you're not alone. A similar product from UK exists but it is aimed for subwoofers.

wytco0 · 26th April 2004, 09:11 AM

Quote:

Originally posted by peranders

Nice work. Very interestin price also. only 70 USD. Unfortunately you're not alone. A similar product from UK exists but it is aimed for subwoofers.

Peranders could you post a link to the UK version? Thanks.

peranders · 26th April 2004, 11:31 AM

At the moment I have totally forgotten the name of this amp. It's mounted on a plate and the output power is 500-1000 watts and rather small (class D). Somebody else who knows?

lilolee · 26th April 2004, 12:47 PM

http://www.bkelec.com/ maybe?

Nuuk · 26th April 2004, 01:04 PM

Quote:

http://www.bkelec.com/ maybe?

No, that's a class D amp rated at 400 watts into 4 ohms and costing nearly 300UKP!

25th April 2004, 03:22 AM	#1
misterresistor diyAudio Member Join Date: Apr 2004 Location: USA	Interesting Gainclone type amplifier? Looks like an amp for speakers like it mounts inside the cabinet, but look at the IC their using. Anyone know about these guys? I could totally use this as my forte is in speakers, but I'm getting started with Gain Clones. http://www.envisionelectronics.com

25th April 2004, 09:27 AM	#2
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	They look OK to me and the price is certainly not a rip off! I personally don't like the idea of the amplification electronics inside the speaker cabinet but if you don't mind that, you could probably build some very nice active speakers with these modules. And they use 'genuine' WIMA caps too! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

25th April 2004, 09:50 AM	#3
uvodee diyAudio Member Join Date: Aug 2002 Location: Washington	at least one person I know in this forum has build an amp with the 4766 before NewbieChipGuy If my memory serves me well.... I thought the results were very good. Seems that chip price is decent, 2x30 watts according to OnSemi this one should be made in order to compare with the 3875 J-P

26th April 2004, 06:42 AM	#6
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Nice work. Very interestin price also. only 70 USD. Unfortunately you're not alone. A similar product from UK exists but it is aimed for subwoofers. __________________ /Per-Anders (my first name) or P-A as my friends call me

26th April 2004, 11:31 AM	#8
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	At the moment I have totally forgotten the name of this amp. It's mounted on a plate and the output power is 500-1000 watts and rather small (class D). Somebody else who knows? __________________ /Per-Anders (my first name) or P-A as my friends call me


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26th April 2004, 12:21 AM	#4
ir diyAudio Member Join Date: Aug 2003 Location: WGTN, NZ	i too have built an amp based on the LM4766. 40Watts per channel. it sounds noticably nicer then my LM1876 based amp (20W Stereo). the chip is awesome - infact i even ordered 5 more of them so that i can experiement with bridged designs. personally i don't know what eveyones phobia of the stereo IC's is?! they're brilliant (just remember to use a large heatsink). nothing beats them for simplicity of creating a stereo amplifier there's a few pics at my site - sorry no good internal pics - i do have them , just haven't updated my site in yonks. the board design is EXACTLY the same as for my LM1876 as the chips are pin for pin compatible (altho the LM4766 needs a mute ressitor to take it out of mute) so you can get an idea of the layout by visiting the page for that amp goodo iR

26th April 2004, 05:32 AM	#5
EnvisionAudio diyAudio Member Join Date: Apr 2002 Location: Dayton, OH	Interesting, those are my amplifiers - and my site! Thanks Mr. Resistor! I'm kind of getting started with the 4766 as an entry level product aimed towards DIYers whose wives hate "ugly" amplifiers and for college kids that cannot afford to lose more space in their dorms. I've sold a number of these already, though it's a surprise to see them here! I love em, personally (of course) and everyone that has bought one has been happy. That's why I do it! I took the "genuine WIMA" out. YES, it was cheesy.

26th April 2004, 12:47 PM	#9
lilolee diyAudio Member Join Date: Jul 2001 Location: London, UK	http://www.bkelec.com/ maybe?

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