Need specs on 8" speakers.

F

FreeMan

Guest
Searched but could not find specs.
Looks like an Infinity speaker.

Need the specs on this 8" speaker.

Frequency response.
Impedance.
Max power

Markings

902-5030

65607
7144E-22

TIA
 
On Saturday, December 16, 2017 at 12:01:29 PM UTC-5, FreeMan wrote:

Markings

902-5030

65607
7144E-22

TIA
Click to expand...

http://reconingspeakers.com/product/infinity-8-woofer-902-7298/

That did not take long. It will lead you to links for the rest of it. But, the typical speaker of that nature is w/in 3dB from about 500 hz to about 4,000 dB, and generally able to handle a 200 Watt amp that does not clip. All of the above depending on the crossover design, of course.

Peter Wieck
Melrose Par, PA
 
This replacements no longer available and then new replacement, neither
has specs.

I do not see any links.

Please advise.


pfjw@aol.com wrote:
On Saturday, December 16, 2017 at 12:01:29 PM UTC-5, FreeMan wrote:

Markings

902-5030

65607
7144E-22

TIA

http://reconingspeakers.com/product/infinity-8-woofer-902-7298/

That did not take long. It will lead you to links for the rest of it. But, the typical speaker of that nature is w/in 3dB from about 500 hz to about 4,000 dB, and generally able to handle a 200 Watt amp that does not clip. All of the above depending on the crossover design, of course.

Peter Wieck
Melrose Par, PA
Click to expand...
 
On Sat, 16 Dec 2017 09:01:16 -0800, FreeMan <freeMan@SpamFree.com>
wrote:

Searched but could not find specs.
Looks like an Infinity speaker.

Need the specs on this 8" speaker.

Frequency response.
Impedance.
Max power

Markings

902-5030

65607
7144E-22

TIA
Click to expand...

You didn't google hard enough...
<http://www.infinity-classics.de/technik/manuals/RSe_technical_sheet.pdf>

Cheers
 
Martin Riddle wrote:

---------------------

Searched but could not find specs.
Looks like an Infinity speaker.

Need the specs on this 8" speaker.

Frequency response.
Impedance.
Max power

Markings

902-5030

65607
7144E-22

TIA

You didn't google hard enough...
http://www.infinity-classics.de/technik/manuals/RSe_technical_sheet.pdf
Click to expand...

** From that data sheet we learn the woofer is a nominal 4 ohms type with a polypropylene ( see through) cone with response to around 3kHz followed by a smooth roll off. There is no LP filter in the x-over.

The 25-100W power rating quoted is for suitable amplifiers, at 4 ohms, so the magnet should be at least medium size with a 1.5 inch voice coil.

Seeing as most of the sound comes from this driver, one ought to replace both in a stereo pair.


..... Phil
 
On 17/12/2017 4:01 AM, FreeMan wrote:
Searched but could not find specs.
Looks like an Infinity speaker.

Need the specs on this 8" speaker.

  Frequency response.
  Impedance.
  Max power

Markings

  902-5030

  65607
  7144E-22

TIA
Click to expand...

**The specs you ACTUALLY need are these:

* T/S parameters

The driver was a very common one for Infinity, back in the 1980s. As
such, you should be able to locate that data. Somewhere.

You will be looking to find a driver with similar Q figures. Since your
RSe is a sealed enclosure, then the figures will not be as critical as
if the enclosure was vented.

And, as Phil stated, replace both bass drivers.

--
Trevor Wilson
www.rageaudio.com.au
 
On 17/12/2017 4:01 AM, FreeMan wrote:
Searched but could not find specs.
Looks like an Infinity speaker.

Need the specs on this 8" speaker.

  Frequency response.
  Impedance.
  Max power

Markings

  902-5030

  65607
  7144E-22

TIA
Click to expand...

**Then there's this:

http://reconingspeakers.com/product/infinity-8-woofer-902-7298/

And here is someone who reckons they have the T/S parameters:

http://audiokarma.org/forums/index.php?threads/replacement-woofer-for-infinity-rs-4.197533/



--
Trevor Wilson
www.rageaudio.com.au
 
I do not know how to translate what is on that spec sheet suggested to
the woofer only specs. The posted freq response seems very short.

I see replacement 4 ohm speakers with better surround material and much
higher frequency response but not sure if they are proper to use as a
replacement for both woofers (two per enclosure) in the RS-4 speaker
enclosures.

Back in the days I just bought speakers from Infinity but now these are
not available.

This will be the third set going in and would probably be more
replacements if I had not just used them with bad foam. Seemed OK as
long as the volume was kept low.

Locally I can get a refoam but the material is questionable and more
importantly I can get new supposedly compatible speakers for less than
the cost of a refoam.

And the replacements use some poly-mica material or unspecified instead
of the material used in the Infinity.

I doubt I can do a refoam myself at age 75.

Anyway, there are so many refoam kits out there that I have no idea
which to use an what the material is. I want the speakers to last
longer than me so my daughter can inherit a good set of speakers.
 
On 18/12/2017 4:06 AM, FreeMan wrote:
I do not know how to translate what is on that spec sheet suggested to
the woofer only specs.  The posted freq response seems very short.

I see replacement 4 ohm speakers with better surround material and much
higher frequency response but not sure if they are proper to use as a
replacement for both woofers (two per enclosure) in the RS-4 speaker
enclosures.

Back in the days I just bought speakers from Infinity but now these are
not available.

This will be the third set going in and would probably be more
replacements if I had not just used them with bad foam.  Seemed OK as
long as the volume was kept low.

Locally I can get a refoam but the material is questionable and more
importantly I can get new supposedly compatible speakers for less than
the cost of a refoam.

And the replacements use some poly-mica material or unspecified instead
of the material used in the Infinity.

I doubt I can do a refoam myself at age 75.

Anyway, there are so many refoam kits out there that I have no idea
which to use an what the material is.  I want the speakers to last
longer than me so my daughter can inherit a good set of speakers.
Click to expand...

**Your solution is obvious: Have both drivers re-surrounded.

--
Trevor Wilson
www.rageaudio.com.au
 
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