Speakers for Gainclone

hotscot · 29th January 2006, 10:11 PM

Newbie considering building a Gainclone in order to learn something about DIY amps.
I keep seeing comments concerning the types of speakers you can drive with them. The sensitivity etc..

Can anyone please give examples of the types of speakers they use with a Gainclone?

For example currently I use KEF iQ7 and I wonder if they'd work together.

http://www.kef.com/qseries/products.htm

Regards
Alan

Destroyer OS. · 30th January 2006, 01:30 AM

I think what is important is 4ohm or 8ohm and the voltage on the transformer secondaries...

Also would 30-50wRMS be enough for those speakers? You might want to look into about how much the amplifier will be putting out with X transformer and how much you need.

edjosh23 · 30th January 2006, 01:49 AM

I think the best way, is just to build the gainclone and find out. The specs say that those don't need much power, they are 90db effeciencent. The website also says the they are normally 8 ohms, but go down to 3.2 (kinda like my B&Ws). My torroid is perhaps a little high for my speakers, and I want to step it down so I can use 4ohm speakers.

By the way, I really like those speakers.
I'm trying to attach a chart, lets see if it works.

Josh

Mick_F · 30th January 2006, 12:49 PM

Use the LM3886 if you want to drive 4 ohm speakers.

Mick

Leolabs · 31st January 2006, 03:31 AM

Hi hotscot,KEF's Q series need good driving capability amp to partner with,so make sure your gainclone is feed with beefy power supply.

hotscot · 31st January 2006, 03:50 AM

Thanks Leo.

Does that translate to a more powerful transformer?
I'm new to this and it's not clear to me the differences between transformers. Is it related to the current capabilities?

I'll do some research tomorrow.

Arx · 2nd February 2006, 05:05 AM

Have a look at the datasheets for the chips. they'll suggest what you should be aiming for voltage wise. (Keep in mind the rectified DC Volts will be a fair bit higher than the the rated V AC)
As far as power goes, I would think a couple hundred VA would do.
There's really not much to "beef" up. nominally 8 ohms isn't really a big deal. If it dips that low, though, you might want to lean a bit on the low side with the supply voltage.

29th January 2006, 10:11 PM	#1
hotscot diyAudio Member Join Date: Aug 2004 Location: California	Speakers for Gainclone Newbie considering building a Gainclone in order to learn something about DIY amps. I keep seeing comments concerning the types of speakers you can drive with them. The sensitivity etc.. Can anyone please give examples of the types of speakers they use with a Gainclone? For example currently I use KEF iQ7 and I wonder if they'd work together. http://www.kef.com/qseries/products.htm Regards Alan

30th January 2006, 12:49 PM	#4
Mick_F diyAudio Member Join Date: Jun 2005 Location: Cologne	Use the LM3886 if you want to drive 4 ohm speakers. Mick __________________ No statement here.

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30th January 2006, 01:30 AM	#2
Destroyer OS. diyAudio Member Join Date: Nov 2005	I think what is important is 4ohm or 8ohm and the voltage on the transformer secondaries... Also would 30-50wRMS be enough for those speakers? You might want to look into about how much the amplifier will be putting out with X transformer and how much you need.

31st January 2006, 03:31 AM	#5
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Hi hotscot,KEF's Q series need good driving capability amp to partner with,so make sure your gainclone is feed with beefy power supply.

31st January 2006, 03:50 AM	#6
hotscot diyAudio Member Join Date: Aug 2004 Location: California	Thanks Leo. Does that translate to a more powerful transformer? I'm new to this and it's not clear to me the differences between transformers. Is it related to the current capabilities? I'll do some research tomorrow.

2nd February 2006, 05:05 AM	#7
Arx diyAudio Member Join Date: Aug 2003 Location: North Vancouver, B.C.	Have a look at the datasheets for the chips. they'll suggest what you should be aiming for voltage wise. (Keep in mind the rectified DC Volts will be a fair bit higher than the the rated V AC) As far as power goes, I would think a couple hundred VA would do. There's really not much to "beef" up. nominally 8 ohms isn't really a big deal. If it dips that low, though, you might want to lean a bit on the low side with the supply voltage.

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