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- From: kirk@hpcc01.corp.hp.com (Kirk Lindstrom)
- Date: Fri, 22 Jan 1993 16:20:39 GMT
- Subject: Re: Strange problem with Sony Receiver/JBL speakers
- Message-ID: <3340420@hpcc01.corp.hp.com>
- Organization: Shredding the water of SF Bay, HP-OCD
- Path: sparky!uunet!utcsri!torn!spool.mu.edu!think.com!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpcc05!hpcc01!kirk
- Newsgroups: rec.audio
- References: <C16LIB.En6@news.cso.uiuc.edu>
- Lines: 32
-
- >His friend spoke with the store he bought the speakers and receiver at and
- >they told him that the crossover in the JBLs is incompatible with most types
- >of Sony 80 watt per channel receivers and that he should get a different
- >brand of receiver. I have never heard of any such thing in my life. Is it
- >possible that Sony receivers are just junk? My STR-GX7es is capable of
- >making my cervin-vega subwoofer knock shelves off of walls. I seriously
- >doubt that a receiver could be "incompatible" with a speaker. I thought
- >I understood audio quite well, but I am at a loss. The difference is
- >noticeable with the JBL speakers when switching amps, but not with others,
- >such as my Polks. Weird...
- >
- >Kevin Molander
- >klm41661@uxa.cso.uiuc.edu
- ----------
- I guess you could say the salesman is right in that "incompatable" means
- that the speaker draws lots of current to produce base. The audio
- supermarket brand receivers usually are not able to supply this current
- which is why they usually state that they will only work well with
- speakers with 8-16 Ohm impedances. The Sony ES line is usually sold in
- more mid to hi-fi stores and is capable of delivering this extra
- current. This is also why they cost twice as much since all an
- amplifier really is is voltage gain with the ability to source some
- level of output current before distortion reaches a certain level.
-
- On speaker compatability, their impedances are seldom constant. I think
- they are typically 6 Ohms plus or minus two Ohms and some can drop to
- one Ohm at certain frequencies (usually the lower freq's).
-
- Anyway, this is why you always need to listen to what you buy all hooked
- together at home before you are stuck with not being able to return it.
-
- Kirk out
-