GRS 8FR-8 Full Range Low Budget Project

[Hondasnl]

And the second one in the clamps.
Listening to the very very nice Super 10 Alnico's again in the background .
But the SEAS goes deeper .
But the Super 10 Alnico's have more detail .

Both are very very nice drivers!

 

[Freedom666]

Hello Hondansl,

you have a nice collection of fullrangers!

 

[Hondasnl]

The First testrun .
And I must say; the bass is perfect and goes deep!
More details can be added with a super tweeter but enough for easily listening.
Very happy with the result.
Nice cheap speaker with good sound!
Not bad at all! Nice driver!

Next step finishing the cabinets with fine sanding and painting in transparent.

 

[Freedom666]

@ Hondasnl - You are used to listening to a point source with good imaging.

A good friend tried first time in life fullrange drivers I recommended him as he likes it loud - veery loud.

He told me he never heard anything like that with details in sound unknown to him.

https://www.diyaudio.com/community/threads/new-15-full-range-fane.308652/post-6921091

 

[joern]

Looks nice !
And fine having fun with such a cheapy 😊

Question: what cables do you use ?
looks a little "stiff" ...

 

[Freedom666]

A nice tweak for fullrange drivers is putting some damping felt on the metal of the loudspeaker basket on the inner side facing the paper diaphragm. Damping these first reflections puts away some audible colouration.

Sometimes this effect can be so efficient that you do not need a RCL filter for correcting excess of middle tone emission

With A B listening test with balance knob on amplifier after tweaking only one box its an easily detectable change in sound

 

[Hondasnl]

Looks nice !
And fine having fun with such a cheapy 😊

Question: what cables do you use ?
looks a little "stiff" ...

Hi Joern I use temporary cable I have on stock for the Basis 95 -> 2023. It's Teflon Silver 3,15mm5. Finally I'll use standard copper.

 

[Hondasnl]

Correction 3,15mm3

 

[DrBoar]

3,15mm2 I hope, refereing to the area of the crośs section of the conductor, not the volume of it.

 

[Hondasnl]

Haha you are correct. 3,15mm2.

 

[Hondasnl]

Finished with fine tuning and sanding.
Ready for the first layer of transparent lacquer.
After first layer of transparent lacquer again fine sanding.
Very solid and heavy cabinets.

 

[Hondasnl]

Just some nice pics .
Have a nice weekend!

 

[Hondasnl]

Nice cheap drivers with good results!
Good bass!
Overall not bad at all!
Project finished and playing.

 

[Freedom666]

Really looks good.

Do you apply any EQ (frequency equalizing) and/or do you measure them?

What amplifier do you use?

As you have different pairs of fullrange loudspeakers. Do you use some speakers for special music or you change system according to your mood?

 

[Hondasnl]

Sometimes switching between speakers.
Drawing -> building -> playing -> selling.
I have 2 amplifiers, main amp = E-380.
Don't like to apply any EQ boosting, always playing pure direct, if that sounds okay -> the speaker is okay.

 

[Freedom666]

OK, the fullrangers which work good from the shelf are rare but do exist.

Anyone who wants more can fine tune his speakers.

Some with terrible frequency response would sound completely acceptable and even good if EQed to the point.

Made sometimes tests with self Eq in the near field with Behringer DEQ2496 and ECM8000 mic.

For example tuned a 17cm fullrange driver in a small box ruler flat and down to 20 hertz just to see if it works. And learned a lot from that.