Onkyo TX-SR313 and 8OHM 100w in stereo?

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farns

97 posts

Master Geek

#112188 29-Nov-2012 14:45

Hi, new to hifi, Im on very tight budget for a party stereo at a back so used like 3 times a year at volume and hopefully capactor ageing wont be an issue, just big speakers on a small receiver.

Ive picked up these old (c.1980) 100w 8ohm speakers which sounded quite good on the seller's cheap receiver at low volume (didnt try high)
http://www.nrpavs.co.nz/JVCSK-1000II.htm
Made here in NZ (not sure if good or not lol) bt unfortunately just with spring clips with tiny openings, hopefully i can get thick enough wire in for a 5m run, 18AWG?

They are heavy beasts, 21kg and 65cm high

Anyway , do you think an Onkyo 313 (65w @ 8OHM) would be able to power them at party levels without distorting noticeably or going kaput? There will be no other speakers attached, just 2 x 8OHM 100w in stereo, I would get any old garage sale receiver but got the Onkyo as I want USB for digital connection rather than reduced SQ from smartphones /ipod via RCA adapter cable

The receiver is Onkyos bottom end and has lots of functions I wont need but only supports 65w @ 8OHM, is this enough for quite loud or will it maybe damage the reciver or sound bad? No idea , I just want cheapest way to play digital music files on phones etc to these big speakers, without losing sound quality.

The volume wont be teenager doof doof loud, just middle aged people having a party with rock music etc with one speaker placed outdoors

ubergeeknz

3344 posts

Uber Geek

Trusted

Vocus

#724710 29-Nov-2012 15:18

65w is not bad especially with large efficient speakers, but it depends on so many factors your best bet is to see how loud it will go before distortion and decide if that's loud enough for you.

Keep in mind that for each time you double power output, volume increases by approx. 3dB (which is about the smallest noticeable change). So to get something appreciably louder than 65w you will be looking around the 120w mark. At the same time 30w only sounds a little quieter than 60w.

General wisdom is that your amp should have more power capability than your speakers can handle and you should then play it at a level suitable for your speakers. Reason being that distortion due to amplifier overloading will drive DC through your speakers which will overheat the coils and cause them to fail prematurely. Also amps tend to better reproduce sound if they are well within their limits.

sidefx

3419 posts

Uber Geek

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#724755 29-Nov-2012 16:44

I'll be interested in how you get on and any thoughts on that receiver - I see it's on sale (I think it's that one?) at jbhifi for $299? I'm looking for something for a home theatre setup, doesn't need to be too powerful and I'm no audiophile, but still interested :)

farns

97 posts

Master Geek

#724762 29-Nov-2012 17:07

Ill update with what I get but Ill prob heed ubergeek's advice and look for a 100w receiver to be on safe side, budget will only only allow to trawl trademe for years old old run of the mill ones without usb for that

If you dont need big power and want value for money then from what Ive read no need to look much further than Onkyo, but obviously reading isnt listening. Only thing Ive read is quite a few complaints about heat failure so might not be built to last

Feedback about similar rated receivers with 100w speakers would be good

sidefx

3419 posts

Uber Geek

Trusted

#724769 29-Nov-2012 17:24

Fair enough. Your original post said you "got the Onkyo" already - was that a typo or do you have one that maybe surplus? :P

farns

97 posts

Master Geek

#724770 29-Nov-2012 17:32

Typo sorry, not sure Id buy a used low-end Onkyo receiver unless it was really cheap