GR Research LGK 1.0 3" fullrange driver

[malibujeff]

If anybody is interested, there is a new 3" driver on the market from GR Research. Here is a link to the specs: GR Research LGK 1.0

There is a long thread about the driver here: www.audiocircle.com/index.php?topic=120804.0

An externally hosted image should be here but it was not working when we last tested it.

www.gr-research.com

 

[norman bates]

thanks

 

[xrk971]

Looks interesting, kind of like a TC9FD in some ways.

 

[spekr]

Radiation seems to widen a lot around 6kHz. What might cause this?

 

[xrk971]

Radiation seems to widen a lot around 6kHz. What might cause this?

An externally hosted image should be here but it was not working when we last tested it.

The dip at 6khz probably corresponds to the cone breakup mode. The scale is super magnified which is refreshing to see from a manufacturer. The 2.5 dB dip at 6khz is really not that bad given the response curves from similar drivers.

 

[Danny]

Hey guys,

Thanks for the interest in our new driver and for the tip on the discussion here.

Sometimes a dip like that (much like a peak) can be a result of some break up issues. If so then it will show up in a spectral decay. In this case though, the spectral decay is quite clean.

An externally hosted image should be here but it was not working when we last tested it.

Just a small dip in the on axis amplitude response.

 

[norman bates]

true, that threw me.

It is a dip, a cancellation ?

 

[vacuphile]

Hi Danny, that looks like an interesting driver to me. I'd like to know if you are selling in Europe.

 

[xrk971]

Looks very similar to the RS100P-4 from Dayton for about same price:
Dayton Audio RS100P-4 4" Reference Paper Woofer 4 Ohm

 

[vacuphile]

There are quite a large number of differences such as mms, basket material, efficiency etc.

 

[Danny]

Hi Danny, that looks like an interesting driver to me. I'd like to know if you are selling in Europe.

I can ship some over to you. You can order them online too if you like.

 

[Danny]

Here is a recent customer build: Bamboo LGK 1.0 build

 

[Greg B]

Way cool build. I like the time aligned baffle.

Somehow I missed this driver completely. That is truly an outstanding waterfall plot for a $35 driver. It looks like an epic choice for a FAST setup, or a mini TL.

 

[vacuphile]

I can ship some over to you. You can order them online too if you like.

How much would shipping be to the Netherlands, ballpark (2/4)?

Thanks.

 

[Danny]

How much would shipping be to the Netherlands, ballpark (2/4)?

Thanks.

$52 Shipping for a pair of drivers via USPS priority mail.

$62 Shipping for the LGK 1.0 kit that includes everything.

 

[leadcoma]

how's it better than all the other China/Taiwan 3" full range drivers?

 

[Danny]

how's it better than all the other China/Taiwan 3" full range drivers?

Attention to detail and correct materials used make a big difference. The response is also very accurate.

I have a ton of these things come through here and this one really stood out. I had them do only a few changes to it.

Listen and hear for yourself.