Glasstone cabs

[Stephent28]

Originally Posted by Brad Johnson

As always, I could be wrong.

This time I think you are right!

[Brad Johnson]

Originally Posted by Stephent28

This time I think you are right!

Thanks. IMO they sound like they work. That should be enough.

[Brad Johnson]

I dropped my cab off with Kevin Brubaker, it'll be used in the AP Intl/ Brubaker booth #4860 at NAMM.

[Kopfjaeger]

Originally Posted by Brad Johnson

I dropped my cab off with Kevin Brubaker, it'll be used in the AP Intl/ Brubaker booth #4860 at NAMM.

Very cool! Now that's a cool advertisement!!

Sepp

[phillybass101]

Originally Posted by Kopfjaeger

Very cool! Now that's a cool advertisement!!

Sepp

Yeah that is cool. Very cool

[diglo]

Auditioning with a reggae band tonight. The Lil G is already packed and ready!

[Brad Johnson]

Originally Posted by diglo

Auditioning with a reggae band tonight. The Lil G is already packed and ready!

That reminds me, once these are finalized I'm planning on having a cover made. I like Tukis so I'll probably go that route.

Mine is holding up great without one but I know a cover can keep it looking brand new.

[Stephent28]

Originally Posted by Brad Johnson

That reminds me, once these are finalized I'm planning on having a cover made. I like Tukis so I'll probably go that route.

Mine is holding up great without one but I know a cover can keep it looking brand new.

Maybe a group buy on the initial order?

Also, good news on your cab at NAMM. I will definitely be stopping by to check out the booth. What head will they be using?

[Brad Johnson]

Originally Posted by Stephent28

Maybe a group buy on the initial order?

Also, good news on your cab at NAMM. I will definitely be stopping by to check out the booth. What head will they be using?

Kevin is taking his Kustom KXB500. There might be an Acoustic Image there too.

[diglo]

Originally Posted by Brad Johnson

That reminds me, once these are finalized I'm planning on having a cover made. I like Tukis so I'll probably go that route.

Mine is holding up great without one but I know a cover can keep it looking brand new.

I've been meaning to buy a D2F cover for mine.

[will33]

Originally Posted by CL400Peavey

Can you comment on the effect of the perpendicular alignment of the drivers when compared with traditional 11x or 21x driver orientation? Two questions that are partially tied together.

Does the positioning of the second driver impart some sort of band pass filtering? If so what range of frequencies are re-enforced by the second driver?

Generally on TB we talk about the SPL increase that comes from adding drivers. 3db from the additional sensitivity and if you are using a SS amp an additional 3db from the impedance drop. How does the perpendicular/port mounting effect the sensitivity increase of adding a second driver? Understandably the second driver increases the power handling, but with everything from the port being off axis how does the second driver change the frequency response of the front mounted driver?

I'll take a stab at it.


One could somewhat mimic the contribution of the downfiring driver by placing your cab face down, using some 2x4's or something to position it 3 or so inches off the floor, making 3 closed sides leaving one side open to function as a sort of port extension and giving the sound a place to "escape". When you play, you'll notice full lowend response with reduced treble response, although, some mid and higher frequencies can still be heard somewhat depending on how things get reflected in there and find their way out.

It could be considered somewhat of a bandpass design, though not exactly a classic bandpass. It uses positioning and cancellations to roll the treble down instead of a passive filter.

In this design, as a somewhat educated guess, I woukd expect full output from the downfiring driver up to maybe somewhere in the neighborhood of 400-500hz with a bit of a healthy "give or take" to those numbers. Upoer frequency response from that driver will be reduced, but it's hard to tell the exact end result without measurements as I can't predict exactly what frequencies would "escape" the chamber and how they'd mix with the upper frequency output from the forward facing driver.

So, I'd say the downfiring driver contributes fully up into the mids somewhere with some possible peaks and valleys above that depending on just how things interact.

One could liken it somewhat to adding a lowpassed driver to their system, though it would sound a little different due to that interaction. This would be adding output in the "fat" part of our sound....the lowmids/midbass bump sort of fat with attenuated very low frequencies due to the small box. It's a neat design and another way to get big sound out of a small box, so long as the player doesn't desire high output in the very low frequencies. Could ballpark that as being under say 70hz or so.

The Faitals used are very smooth drivers and already friendly towards smallish boxes, so I would expect it to still sound fairly smooth and not as "hyped" as a Schroeder. Probably a little fuller bottom than the schroeder as well.


What interests me is the switch shutting of the downfiring driver to run the cab at 8ohms. This would do a couple interesting things. LF response would extend lower as there is now only one driver operating in the same box size. Lowmid/midbass output would be a bit less due to the second driver not contributing to that output. And perhaps most importantly, the now disconnected driver would act as a passive radiator in addition to the regular ports already in the cab. That could make for an interesting lowend. Or, the downfiring drivers coil could be shorted in that configuration in an attempt to keep if from moving, but I would think there would still be some "give" there in that cone coil assembly.


It would be interesting to see some response curves taken of the different switching configurations. I could see some folks such as myself who enjoy a fat lowmid output and not so much VLF with a clear top liking these cabs. Others who enjoy strong output down in the 40-60hz may miss that.

The cab seems like it would be voiced naturally a bit like how I set my eq on more "even" speakers, with the bass knob rolled back a notch and the lowmid bumped a notch or 2.

[5StringPocket]

This makes sense and is also my preference for cab voicing and eq. I'd also be interested in specs for the Lil G 210 and more info on how it works in a Lil G 210/212 stack. Not generally good practice to mix driver sizes but if properly designed to work well together (e.g. Berg HD210/112, Barefaced Compact/Midget) it might make a nice mix 'n match stack that offers up several different tone options. Brad, I know you posted a comment on this. It would be nice to see some further info, is it too preliminary?

[will33]

One could get a close enough idea of internal volume working off the exterior dimensions and model a pair of Faitals in it to get a pretty good idea of the lowend capabilities of these cabs. Then just reduce the upper part of the curve to reflect the output of a single driver.


The "wrench in the gears" as far as modeling comes from switching off the one driver. That would act as a passive radiator with the same Fs of the working driver, and it's moving mass due to there still being the voice coil assembly and all that on it, plus the effect of that, now passive, drivers magnetic field interacting with the moving coil.

[will33]

Carvin used to make a 212 cab that had the top driver facing forward and the bottom one angled downward at 45 degrees. I remember BFM explaining that the angled driver would lowpass itself somewhere around 500hz though I don't remember the slope, and there would be some floor bounce reflections involved. So, perhaps this one firing straight down would pass itself a bit lower than that.

[Brad Johnson]

Originally Posted by 5StringPocket

This makes sense and is also my preference for cab voicing and eq. I'd also be interested in specs for the Lil G 210 and more info on how it works in a Lil G 210/212 stack. Not generally good practice to mix driver sizes but if properly designed to work well together (e.g. Berg HD210/112, Barefaced Compact/Midget) it might make a nice mix 'n match stack that offers up several different tone options. Brad, I know you posted a comment on this. It would be nice to see some further info, is it too preliminary?

The 210's are ready in their current form. Apparently Sammie has mentioned that he can do them with 8 or 16 ohm drivers, I've only tried out the 4 ohm cabs.

The 210 has the same footprint as the 212 Lil G in a shorter enclosure. Same tweeter and crossover AFAIK. The prototypes let him know he's on the right track. They sound very similar to the Lil G and when I tried both Celestion and Ciare loaded prototypes they compliment my cab very well and the stack of two of them sounded very good. Better than the Lil G? I don't know... I'd need to take them on some gigs to nail that down. It made an already big enough sound even bigger IMO of course. I don't have lab work to back that up.

Sammie doesn't currently have gear for making actual sonic measurements and I'm not sure if he's headed in that direction, coming more from the if it sounds good it is good camp if I had to guess.




BTW I didn't really start this thread as another place for people to guess what the cabs sound like or how they work. That really takes getting one in your hands to see if it works for you. That's what I did.

[piercer]

Originally Posted by Brad Johnson

BTW I didn't really start this thread as another place for people to guess what the cabs sound like or how they work. That really takes getting one in your hands to see if it works for you. That's what I did.

And so did I...
Just pulled the trigger on one today!
Stumbled across this cab looking for a used Schroeder 1212L here on talkbass. Came across these threads & had my curiosity piqued. Did my due diligence & homework- read every post I could,watched the you tube vids,listened to testimonials... I even called Brad before I called Sammie.
I'm fully confident I'm gonna dig this cab. Now I just can't wait to hear it in person! First pierce of "brand new"(read:not used & just new to me)gear I've been able to purchase in a long time. Stoked!

[Brad Johnson]

Originally Posted by piercer

And so did I...
Just pulled the trigger on one today!
Stumbled across this cab looking for a used Schroeder 1212L here on talkbass. Came across these threads & had my curiosity piqued. Did my due diligence & homework- read every post I could,watched the you tube vids,listened to testimonials... I even called Brad before I called Sammie.
I'm fully confident I'm gonna dig this cab. Now I just can't wait to hear it in person! First pierce of "brand new"(read:not used & just new to me)gear I've been able to purchase in a long time. Stoked!

Great talking with you yesterday. I'm looking forward to what you think when you get it... and don't be afraid to crank it when you get a chance.

[piercer]

Originally Posted by Brad Johnson

Great talking with you yesterday. I'm looking forward to what you think when you get it... and don't be afraid to crank it when you get a chance.

You as well Brad. Appreciate your insight. Really impressed with how open & cool everyone with these cabs has been. Maybe rename this thread "Nice guy cab club"?

Don't worry. I've got a gig with a guitarist who gets substantially louder each set. It'll get put through its paces with a Shuttle 9.0.

Definitely interested in a cover as $ allows. Anyone got one yet?

Also had to skip the collapsible dolly- fundage is tight. Curious as to how many ordered it?

I'll post some pics when it arrives. I'm jonesin'!

[Virgil]

Originally Posted by piercer

You as well Brad. Appreciate your insight. Really impressed with how open & cool everyone with these cabs has been. Maybe rename this thread "Nice guy cab club"?

Don't worry. I've got a gig with a guitarist who gets substantially louder each set. It'll get put through its paces with a Shuttle 9.0.

Definitely interested in a cover as $ allows. Anyone got one yet?

Also had to skip the collapsible dolly- fundage is tight. Curious as to how many ordered it?

I'll post some pics when it arrives. I'm jonesin'!

I ordered my cover through LeCover. They have the measurements of the cab and cart combination, which I have.

[piercer]

Originally Posted by Virgil

I ordered my cover through LeCover. They have the measurements of the cab and cart combination, which I have.

Sweet. I'll have to check em out. You haven't posted any pics have you? I don't remember seeing a cover.