Grimm Audio Design Philosophy and LS1 Speaker - About $22K

[Pete Basel]

Top level but interesting:

http://www.grimmaudio.com/site/assets/files/1088/speakers.pdf

REview:

http://www.6moons.com/audioreviews/grimm/1.html

[craigk]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

Top level but interesting:

http://www.grimmaudio.com/site/assets/files/1088/speakers.pdf

REview:
http://www.6moons.com/audioreviews/grimm/1.html

I listened to this speaker at a HiFi show in Sandton, Johannesburg, Gauteng last year. if I had $ 22,000.00 to spend on speakers, this would not be the pair I would purchase.

[Pete Schumacher]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

Top level but interesting:

http://www.grimmaudio.com/site/assets/files/1088/speakers.pdf

REview:
http://www.6moons.com/audioreviews/grimm/1.html

Nice sounding speakers too.

I wonder if the bass is "fast" enough.

[Wolf]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

Top level but interesting:

http://www.grimmaudio.com/site/assets/files/1088/speakers.pdf

REview:
http://www.6moons.com/audioreviews/grimm/1.html

They had ZERO BASS at AXPONA. No warmth and seemed to only go to about 100Hz.
Wolf

[Pete Schumacher]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

They had ZERO BASS at AXPONA. No warmth and seemed to only go to about 100Hz.
Wolf

The bass was so fast that it was over before the rest of the signal showed up.

I heard them in a room that had subs . . .

[Deward Hastings]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

I heard them in a room that had subs . . .

But did those subs have "jerk" ? ? ? that's the question . . .

[Pete Basel]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

I listened to this speaker at a HiFi show in Sandton, Johannesburg, Gauteng last year. if I had $ 22,000.00 to spend on speakers, this would not be the pair I would purchase.

My reason for posting was to perhaps provide ideas for DIY not to suggest
that anyone buy them.
I have not heard them, yet.

[Pete Basel]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

They had ZERO BASS at AXPONA. No warmth and seemed to only go to about 100Hz.
Wolf

I was wondering about listening impressions since I've not heard them, thanks.
Perhaps they should add an adjustable BSC option in the software.

[evilskillit]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

My reason for posting was to perhaps provide ideas for DIY not to suggest
that anyone buy them.
I have not heard them, yet.

Looks like a bookshelf with built in stand interpretation of Troel's Poor Man's Strad.

http://www.troelsgravesen.dk/PMS.htm

Which is to say neat, too bad they apparently don't sound great but it's an interesting idea and something a DIYer could probably take a whack at for a lot less.

[eyekode]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

I liked the paper and agree with most of the contents. Thanks for posting it.

[Pete Basel]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

Thanks, yes it does provide some food for thought.
Reading it again, they show how bad the DSP DIY system is off axis, interesting that
it is the horizontal axis, so it would seem that it is caused by directionality of the drivers
and diffraction. The vertical polars are far worse as would be expected. They imply
that their system is much better but then do not show the polars!

Still it is good to see what others are doing and get some fresh ideas.

Also interesting that they prefer IIR over FIR filters probably as a result of their
preference for less aggressive filtering.

It seems at first glance, that they borrowed a lot from Linkwitz, SEAS drivers, wide
tower structure, very small sub in the base. But they are not open back dipoles so
not so similar after all.

[eyekode]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

The part I agreed with is not trying to solve reflections with DSP. There is no point as path lengths differ as you move around the room and it can make the overall power response wonky.

Same idea works with passive crossovers!

[6thplanet]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

So...$22K for a two way speaker....and you still need a sub to get some sorta bass action? Is that what's being said? (Shakes head, walks away......)

The bass was so fast that it was over before the rest of the signal showed up.

I heard them in a room that had subs . . .

[DE Focht]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

Thanks, yes it does provide some food for thought.
Reading it again, they show how bad the DSP DIY system is off axis, interesting that
it is the horizontal axis, so it would seem that it is caused by directionality of the drivers
and diffraction. The vertical polars are far worse as would be expected. They imply
that their system is much better but then do not show the polars!

Still it is good to see what others are doing and get some fresh ideas.

Also interesting that they prefer IIR over FIR filters probably as a result of their
preference for less aggressive filtering.

It seems at first glance, that they borrowed a lot from Linkwitz, SEAS drivers, wide
tower structure, very small sub in the base. But they are not open back dipoles so
not so similar after all.

Try this link and follow the thread for a simple view of FIR and IIR dsp and an introduction to pre-ringing. CLICK ME :eek:

I don't know how you make a bad sounding speaker with those materials....I don't know how you justify $22K for those materials.

[Pete Basel]

Re: Grimm Audio Design Philosophy and LS1 Speaker - About $22K

I really have no interest in discussing the price. I don't care what the
price is since I'm not going to buy them. Looking more at the validity
of their design choices.