Over-sized closed-back 2x12 has too much low-end. Why?

[fucduperinchit]

I converted it to a semi open-back today. Check it out!

Pine is some tough stuff!

 

[D-Rock]

Hows it sound? Not sure I would have halved the back though. 1/3 would suffice.

 

[fucduperinchit]

Hows it sound? Not sure I would have halved the back though. 1/3 would suffice.

Getting ready to try it now. I didn't think I removed as much as I did, but it sounded great with the back removed. I could always make a new lower portion if I need to.

Actually it's just a little over 1/3. The pillow is throwing it off a bit...

 

[Bob Savage]

The cabinet is 100% pine.

Seriously? Don't know that I've ever encountered a pine cab.

 

[fucduperinchit]

The cabinet is 100% pine.

Seriously? Don't know that I've ever encountered a pine cab.

It's some seriously hard wood to cut! I had to get some Bosch "hard wood" blades and a new Rigid jig saw to cut it.

It still sounds a lot deeper than my 412 cabinet? Dammit! It's just too much bass for me.

 

[Giga]

Lift the cab of the ground and you'll probably be fine...

Giga

 

[JTyson]

Lift the cab of the ground and you'll probably be fine...

Giga

Thats what I was thinking at the start - get it off the floor

 

[leib10]

Yep. My Uberkab has way too much low end for the living situation I'm in, so it stays on its casters.

 

[fucduperinchit]

I have it on a quad of MESA/Boogie Quick-Lok casters. I just don't get it. I was thinking maybe I should line the inside of the cab to reduce inner size of the cabinet... ?

 

[blackba]

In general most people seem to prefer Alnico Magnet speakers in semi-opened back cabs. It looks like you have 2 Celestion Alnico Golds in the cab. If its still too bassy, I think may just have to try different speakers. I have owned a Celestion Alnico Gold and didn't find it too bassy, but this was in a VOx AC30CC1 combo. I had a similar problem with my Marshall 1936 212 cab copy I built when I put some Celestion Anni G12H30's in, it was too boomy and bassy. I cut a new cab and made the opening in the middle about 5inches and it did the trick. I know where the opening is makes a difference, so you might try ordering a new piece of wood and experimenting.

Surprised your cab is pine. That was used in the old Fender Cabs and combos of the 60's. Didn't know they still made cabs with pine though....

 

[fucduperinchit]

In general most people seem to prefer Alnico Magnet speakers in semi-opened back cabs. It looks like you have 2 Celestion Alnico Golds in the cab. If its still too bassy, I think may just have to try different speakers. I have owned a Celestion Alnico Gold and didn't find it too bassy, but this was in a VOx AC30CC1 combo. I had a similar problem with my Marshall 1936 212 cab copy I built when I put some Celestion Anni G12H30's in, it was too boomy and bassy. I cut a new cab and made the opening in the middle about 5inches and it did the trick. I know where the opening is makes a difference, so you might try ordering a new piece of wood and experimenting.

Surprised your cab is pine. That was used in the old Fender Cabs and combos of the 60's. Didn't know they still made cabs with pine though....

Yes, all of Cornford's cabinets are made from 12 ply pine. At least I think all of them are? The inside of my 4x12 smells like a Christmas tree!

 

[Klark]

I've always stayed away from the oversized 2x12 cabs because of their excessive low end. IMO, the THD and similar sized 2x12s are the ticket. I recently sold my THD and I regret it everyday..

 

[kiff]

The inside of my 4x12 smells like a Christmas tree!

find a new spot for your stash!

 

[fucduperinchit]

I've always stayed away from the oversized 2x12 cabs because of their excessive low end. IMO, the THD and similar sized 2x12s are the ticket. I recently sold my THD and I regret it everyday..

I think you're right. Logically, it seems like I would need to reduce the interior size of the cabinet - or is similar to a bass drum, where the larger one sound more "boomy" because of the additional material? Resonating I mean...

 

[kiff]

I've always stayed away from the oversized 2x12 cabs because of their excessive low end. IMO, the THD and similar sized 2x12s are the ticket. I recently sold my THD and I regret it everyday..

I think you're right. Logically, it seems like I would need to reduce the interior size of the cabinet - or is similar to a bass drum, where the larger one sound more "boomy" because of the additional material? Resonating I mean...

I'm no expert in acoustics, but I think it's because a larger open area allows "standing waves" of longer length (thus lower freq.). while padding disperses and/or absorbs them to reduce them (any freq) in the first place

 

[fucduperinchit]

I've always stayed away from the oversized 2x12 cabs because of their excessive low end. IMO, the THD and similar sized 2x12s are the ticket. I recently sold my THD and I regret it everyday..

I think you're right. Logically, it seems like I would need to reduce the interior size of the cabinet - or is similar to a bass drum, where the larger one sound more "boomy" because of the additional material? Resonating I mean...

I'm no expert in acoustics, but I think it's because a larger open area allows "standing waves" of longer length (thus lower freq.). while padding disperses and/or absorbs them to reduce them (any freq) in the first place

So would padding get rid of the excessive bass?

RANT ALERT!
I just can't imagine that anyone thinking an OS 2x12 sounds good! I think MESA started this crap with their Dual-Rectalfire cabinets...

 

[kiff]

So would padding get rid of the excessive bass?

I would think so. again, not an expert... I don't think lining the sides would do as much as putting a divider (someone mentioned that?). kinda like a pillow in a kick drum. if you have some foam, try rolling it up and wedge it in the middle. nothing permanent, just see if it makes a difference. then possibly a padded divider.

 

[JakeAC5253]

I just can't imagine that anyone thinking an OS 2x12 sounds good! I think MESA started this crap with their Dual-Rectalfire cabinets...

You assume to judge Mesa's design by the one you have there? That's one of the most ignorant things I've read in a while. Mesa makes a good oversized cabinet, though apparently Cornford does not. I had a chance to play a Mesa oversized 2x12 a while ago and even without a boost it was not bassy or loose. Mesa also uses MDF back boards to the Cornford's pine...

 

[fucduperinchit]

I just can't imagine that anyone thinking an OS 2x12 sounds good! I think MESA started this crap with their Dual-Rectalfire cabinets...

You assume to judge Mesa's design by the one you have there? That's one of the most ignorant things I've read in a while. Mesa makes a good oversized cabinet, though apparently Cornford does not. I had a chance to play a Mesa oversized 2x12 a while ago and even without a boost it was not bassy or loose. Mesa also uses MDF back boards to the Cornford's pine...

Here we go... Didn't mean to offend... I'm just not a big fan to most of the post Mark IV "A" Mesa/Boogie gear. I had a DR myself, and MESA refused to fix it! They said mine was a prototype that was sent to Akron Music, and that they didn't have a replacement board for it.

 

[fucduperinchit]

So would padding get rid of the excessive bass?

I would think so. again, not an expert... I don't think lining the sides would do as much as putting a divider (someone mentioned that?). kinda like a pillow in a kick drum. if you have some foam, try rolling it up and wedge it in the middle. nothing permanent, just see if it makes a difference. then possibly a padded divider.

I will do as you recommend. I think I have some stuff to do that with too. I put a really huge pillow in the bottom, and seems to have helped quite a bit.