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 Post subject: Amps for Rogers LS3/5 a
PostPosted: Thu Dec 30, 2010 10:13 pm 
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Joined: Sun Feb 13, 2005 10:12 am
Posts: 47
Location: richmond, BC, CA
I am looking for a power amp or an integrated amp for these speakers.
Any suggestions ?


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PostPosted: Thu Dec 30, 2010 10:50 pm 
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Joined: Thu Jan 08, 2009 2:00 pm
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Location: Stouffville, ON, CA
cwlam3 wrote:
I am looking for a power amp or an integrated amp for these speakers.
Any suggestions ?

Back in the day when I worked at Ring Audio on Queen Street in Toronto, we always like demo-ing these Rogers with big transistor amps. It always seemed that the better and more expensive the amp, the better the little LS3/5a's performed.

Fast forward 30 years and I've also heard good results from 300B SET's.

I am personally using a pair of LS3/5a's - 11 Ohm with AB1's (passive subwoofers) - driven by NAD S series components, specifically a S100 pre and S200 amp. Very wonderful is this combination. I think the amp was designed by Gryphon and can be had occasionally on the used market relatively cheap. There is also an NAD S300 integrated that is of similar quality.

Achieving synergy and audio nirvana can be fraught with many missteps, you just don't know until you try. LS3/5a's definitely benefits from the effort.


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PostPosted: Fri Dec 31, 2010 12:18 am 
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Joined: Sat Nov 27, 2004 5:52 am
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Location: Kaleden, BC, CA
These little marvels demand top notch electronics in order to sound their best. Here are a few that I have had great success with, with the exception of the Rogers E40 which I have not heard but comes highly recommeded by some.

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PostPosted: Fri Dec 31, 2010 12:57 am 
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Location: richmond, BC, CA
I tried a Cary 300 SEI but did not work out. Most people suggests low power tube amps or vintage tube amps. How about something like Eico or Scott 222s ? I am thinking of a Audio Research Classic 30 or something similar.


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PostPosted: Fri Dec 31, 2010 3:45 am 
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Location: Mississauga, ON, CA
I have used the VTL Tiny Triodes or TT-25,as shown above by another poster with LS-3/5A's and found the sound to be wonderful..Very fluid mid-range and very well balanced..I believe you will find trials more hit and miss with solid state amplification than with tubes..LS-3/5A's have limited power handling so although,as another said,high power solid state worked well,just beware a little accident with volume or anything else that overloads the LS-3/5A can be catastrophic..Once you damage a pair,you will never repair them to be the same again..They are tightly matched during manufacture(to each other and to a reference) and replacing any part will alter that match..I recommend any smaller tube amp,vintage or new,preferrably EL-84 (TT-25) but EL-34 based(Dynaco ST-70,etc)or even 7591 or 6L6 will sound marvellous..Tubes simply sound better on the T-27 tweeter..Just my opinion but based on hearing as well..I have one of those high-power solid state amps that often are used with the Rogers(Krell KSA-100)and it just didn't have the magic of tubes.

tubeornotube


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PostPosted: Fri Dec 31, 2010 4:02 am 
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Joined: Mon Nov 29, 2004 3:55 pm
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Location: Owen Sound, ON, CA
i had the E-40 in 2001
i did not like it...
bright sounding
it ran 6L6 tubes...
sold it ....
had it on ebay and no bids...until the last 40 seconds
and someone paid the reserve of $1200 US
i have since seen them for $2500-$5000 ...
but that's stupid...
you can put together a whole system for that


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PostPosted: Fri Dec 31, 2010 4:11 am 
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Location: Toronto, ON, CA
I used the Grandson of ampzilla... 25 watts into 16 ohms, massive current. It was nice.

Whatever you pick, you gotta know it's all about the midrange - tubes can work wonderfully. I've not heard the combination, but 300B should be marvelous.


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PostPosted: Fri Dec 31, 2010 5:40 am 
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Location: Guelph, ON, CA
I used them with a QUAD 303 power amp and 33 pre for a long time.
It's said the BBC did as well.


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PostPosted: Fri Dec 31, 2010 6:37 am 
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Joined: Tue Nov 07, 2006 4:50 pm
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Location: Moncton, New Brunswick, NB, CA
I've been using LS3/5a's since (gasp) 1970!

They have never given me a moment's grief.

I've only used two amps on them in all that time:

A pair of Van Alstine modified Dyna Stereo 70's, run as monoblocs, then my current pair of Audio Innovations tubed monoblocs. Both sounded terrific!

I would lean toward tubes,.....but would love to hear them driven by Sugden SS.
Quad, or AR gear might also be a good match.

They are a QUALITY speaker, drive them with QUALITY amplification!

Enjoy, del Sol


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PostPosted: Sat Jan 01, 2011 12:15 am 
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Location: richmond, BC, CA
I think I would pick an amp that is easy to find.


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