Tom's Hardware > Forum > Audio > High-End Audio > 8 Ohms AV receiver with 4 Ohms Speakers

8 Ohms AV receiver with 4 Ohms Speakers

Forum Audio : High-End Audio - 8 Ohms AV receiver with 4 Ohms Speakers

Tom's Hardware: Over 1.4 million members in 6 different countries available to answer all your high-tech questions. Sign up now! Its free!
Ask the community Add a reply
Word :    Username :           
 
Anonymous   12-26-2004 at 11:07:40 PM

Archived from groups: rec.audio.high-end (More info?)

 

Hi,

I'm trying to connect my AV receiver (Marantz SR 7300) to my high end
speakers. My question is the receiver indicates that it requires a
"minimum 8 ohms" however my speaker specs indicate 4 Ohms. Is there a
mismatch btw the speakers and the receiver? Will the Amp destroy my
speaker if I connect with this disparity? Please advise.........
Thankyou!
Audionut

Add a reply
Sponsored Links
Register or log in to remove.
Anonymous   12-27-2004 at 09:53:03 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

audionut wrote:

> Hi,
>
> I'm trying to connect my AV receiver (Marantz SR 7300) to my high end
> speakers. My question is the receiver indicates that it requires a
> "minimum 8 ohms" however my speaker specs indicate 4 Ohms. Is there a
> mismatch btw the speakers and the receiver? Will the Amp destroy my
> speaker if I connect with this disparity? Please advise.........
> Thankyou!
> Audionut

The speaker might cause the amplifier to be damaged.

At any given voltage drive level, a 4Ω speaker will draw twice as much
current as will an 8Ω speaker. The designers of the Marantz 7300
apparently did not provide for the output stage of the amplifier to
handle the current draw into a 4Ω speaker.

The reality is that you probably will see no ill effects until you
really try and push the amplifier to its full capabilities. Apparently
the designers of the Marantz SR7300 felt that if one were to drive the
amplifier to clipping, it would not be able to safely provide the
doubled current that would be drawn by a 4Ω load as compared to an 8Ω load.

-GP

Reply to Anonymous
Anonymous   12-27-2004 at 09:50:49 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

audionut wrote:

> Hi,
>
> I'm trying to connect my AV receiver (Marantz SR 7300) to my high end
> speakers. My question is the receiver indicates that it requires a
> "minimum 8 ohms" however my speaker specs indicate 4 Ohms. Is there a
> mismatch btw the speakers and the receiver? Will the Amp destroy my
> speaker if I connect with this disparity? Please advise.........

No, the speakers will potentially damage / destroy your amp ( maybe )
which might then in turn damage / destroy the speakers - or simply it'll
just cause the amp to cut out occasionally.

Next time I suggest you check your needs before buying. It's not about
*matching* btw. Minimum load means what it says. Like maximum rpm for a
car's engine for example.

Graham

Reply to Anonymous
Anonymous   12-28-2004 at 09:31:14 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

In article <cqmr4s01kdl@news3.newsguy.com>, sheenapk@gmail.com says...
> Hi,
>
> I'm trying to connect my AV receiver (Marantz SR 7300) to my high end
> speakers. My question is the receiver indicates that it requires a
> "minimum 8 ohms" however my speaker specs indicate 4 Ohms. Is there a
> mismatch btw the speakers and the receiver? Will the Amp destroy my
> speaker if I connect with this disparity? Please advise.........

You'll be fine if you don't push it too loud.

--
Feel the Sound - www.audiofil.net
d.B.

Reply to Anonymous
Anonymous   12-29-2004 at 10:14:14 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

Just get a pair of high wattage 4 ohm resistors and put them in series
with one of the speaker leads (on each speaker). You will waste half of
your power but you won't damage anything.

---MIKE---

Reply to Anonymous
Anonymous   12-29-2004 at 10:15:27 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

Dalibor Bauerfrajnd wrote:

>In article <cqmr4s01kdl@news3.newsguy.com>, sheenapk@gmail.com says...
>> Hi,
>>
>> I'm trying to connect my AV receiver (Marantz SR 7300) to my high end
>> speakers. My question is the receiver indicates that it requires a
>> "minimum 8 ohms" however my speaker specs indicate 4 Ohms. Is there a
>> mismatch btw the speakers and the receiver? Will the Amp destroy my
>> speaker if I connect with this disparity? Please advise.........
>
>You'll be fine if you don't push it too loud.
>
>--
>Feel the Sound - www.audiofil.net
>d.B.
>
>

In light of the oft-cited problems sometimes encountered by low-impedance
speakers matched with certani amplifiers, I can't help whether anybody here has
had any experience with the "Autotransformers" described in the following web
site:

http://www.zeroimpedance.com/index.htm

If they work as claimed, this would seem to be a possible enhancement for many
systems. As the owner of electrostatic speakers with a very difficult,
variable response curve (Martin Logan CLS IIzs with an impedance dipping below
2 ohms at some points), I've been thinking about trying out a pair in
combination with a 4-ohm rated power amplifier (CJ Premier 11A). Even though
I've had no major difficulties driving the speakers, I would not mind the
possibility of presenting a more benign load to the amplifier.

Bruce J. Richman

Reply to Anonymous
Anonymous   12-30-2004 at 10:11:06 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

On 29 Dec 2004 16:14:14 GMT, twinmountain@webtv.net (---MIKE---)
wrote:

>Just get a pair of high wattage 4 ohm resistors and put them in series
>with one of the speaker leads (on each speaker). You will waste half of
>your power but you won't damage anything.

.... except the frequency response of the speakers. The amplifier would
behave as if it has 4 ohms output impedance with is rahter abysmal.

The best advice is to either buy another speaker, or to actualy try
the spaekers: most, if not all, amplifiers will not break before the
sound get distorted. As another poster says: keep the volume below the
distortion point and everything will be fine.

>
> ---MIKE---

Per.

Reply to Anonymous
Anonymous   12-30-2004 at 10:11:36 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

Bruce J. Richman wrote:

> Dalibor Bauerfrajnd wrote:
>
>
>>In article <cqmr4s01kdl@news3.newsguy.com>, sheenapk@gmail.com says...
>>
>>>Hi,
>>>
>>>I'm trying to connect my AV receiver (Marantz SR 7300) to my high end
>>>speakers. My question is the receiver indicates that it requires a
>>>"minimum 8 ohms" however my speaker specs indicate 4 Ohms. Is there a
>>>mismatch btw the speakers and the receiver? Will the Amp destroy my
>>>speaker if I connect with this disparity? Please advise.........
>>
>>You'll be fine if you don't push it too loud.
>>
>>--
>>Feel the Sound - www.audiofil.net
>>d.B.
>>
>>
>
>
> In light of the oft-cited problems sometimes encountered by low-impedance
> speakers matched with certani amplifiers, I can't help whether anybody here has
> had any experience with the "Autotransformers" described in the following web
> site:
>
> http://www.zeroimpedance.com/index.htm
>
> If they work as claimed, this would seem to be a possible enhancement for many
> systems. As the owner of electrostatic speakers with a very difficult,
> variable response curve (Martin Logan CLS IIzs with an impedance dipping below
> 2 ohms at some points), I've been thinking about trying out a pair in
> combination with a 4-ohm rated power amplifier (CJ Premier 11A). Even though
> I've had no major difficulties driving the speakers, I would not mind the
> possibility of presenting a more benign load to the amplifier.

Bad link.

But it works as simply:

http://www.zeroimpedance.com/

Reply to Anonymous
Anonymous   12-31-2004 at 10:14:09 PM
- 0 +

Archived from groups: rec.audio.high-end (More info?)

 

bjrichman@aol.com (Bruce J. Richman) wrote:

>Dalibor Bauerfrajnd wrote:
>
>>In article <cqmr4s01kdl@news3.newsguy.com>, sheenapk@gmail.com says...
>>> Hi,
>>>
>>> I'm trying to connect my AV receiver (Marantz SR 7300) to my high end
>>> speakers. My question is the receiver indicates that it requires a
>>> "minimum 8 ohms" however my speaker specs indicate 4 Ohms. Is there a
>>> mismatch btw the speakers and the receiver? Will the Amp destroy my
>>> speaker if I connect with this disparity? Please advise.........
>>
>>You'll be fine if you don't push it too loud.
>>
>>--
>>Feel the Sound - www.audiofil.net
>>d.B.
>>
>>
>
>In light of the oft-cited problems sometimes encountered by low-impedance
>speakers matched with certani amplifiers, I can't help whether anybody here
>has
>had any experience with the "Autotransformers" described in the following web
>site:
>
>http://www.zeroimpedance.com/index.htm
>
>If they work as claimed, this would seem to be a possible enhancement for
>many
>systems. As the owner of electrostatic speakers with a very difficult,
>variable response curve (Martin Logan CLS IIzs with an impedance dipping
>below
>2 ohms at some points), I've been thinking about trying out a pair in
>combination with a 4-ohm rated power amplifier (CJ Premier 11A). Even
>though
>I've had no major difficulties driving the speakers, I would not mind the
>possibility of presenting a more benign load to the amplifier.
>
>Bruce J. Richman

I've measured several hundred loudspeakers and never encountered a single load
(including Martin Logan speakers and other electrostatics) that caused problems
with the speakers driven to full output with fairly ordinary amplification. I'd
say that if you do not now have recordings that cause limiting you're still
working in the safe operating area of your electronics.

Reply to Anonymous
Ask the community Add a reply
Tom's Hardware > Forum > Audio > High-End Audio > 8 Ohms AV receiver with 4 Ohms Speakers
Go to:

There are 1212 identified and unidentified users. To see the list of identified users, Click here.

Forum map
Bestofmedia Forum ©
2000-2009 Bestofmedia Group
Page generated in 0.234 seconds
Please mind

You are about to answer a thread that has been inactive for more than 6 months.
If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.

Add a reply Cancel
Sponsored links
  • Ask the community now
  • Publish
Ad
Related Topics
See all relatives topics
Related Content
They won a badge
Join us in greeting them