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Bag End D12-B Replacement Speakers

Cat Cobra

Cat Cobra

Supporting Member
Nov 3, 2011
60
66
Berkley, Michigan
#1
I just picked up a used Bag End oiled birch D12-B 212 cabinet and unfortunately the original speakers are blown. Does anyone have any recommendations for replacement speakers, preferably I would like neo's since the cabinet is already quite heavy.

The cabinet is 2 separate boxes, the interior dimensions of each box is 15"L x 11.5" W x 11.5" H with a 2" port in the rear. Unfortunately I have a mac and WINISD wont work.

upload_2015-6-25_23-5-28.png
 
#4
Cat Cobra said:
I just picked up a used Bag End oiled birch D12-B 212 cabinet and unfortunately the original speakers are blown. Does anyone have any recommendations for replacement speakers, preferably I would like neo's since the cabinet is already quite heavy.
Click to expand...
Cat Cobra said:
So far my options are Eminence DELTA LITE II 2512, Eminence DELTA PRO-12A, Eminence KAPPA LITE 3012HO.
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IIRC the Delta Pros are what the original drivers are based on: if getting back a tone similar to stock is important to you (either because of previous experience with Bag End cabs or to help flip them in the future), short of ordering replacements from BE these are probably the drivers to get.
If you do 6 string electric guitar on the side, a cab loaded with Delta Pros would make for a nice doubler, according to @DukeLeJeune (@JGR in turn holds the stock cabs in high regard, generally speaking and as double duty platforms).
They aren't light though.
However, Eminence has a new driver out from the same series, marketed as a lighter version of the above with similar specs (and still bass-friendly xmax), the [Invalid or Expired Link Removed]. I'd add this one to the list and ask the experts about it as well. (Needless to say, I'm not one of them.)
 
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#8
Paging @AstroSonic... :)

EDIT: what I get with my humble WinISD-fu is the following, relative to the Deltalite option in a 31 Lt box tuned to 59 Hz (what I get with a 2" port only as deep as a 3/4" panel - if yours have some sort of tubing measure it and report back):
F10 at about 55 Hz
F3 at 77 Hz
0 dB at 90 Hz
+3 peak at 128 Hz
 
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#11
I modeled the 2512, Pro 12A and 3012HO. None of them have much deep bass (F3's in the upper 60's to upper 70's). The Pro 12A and 3012HO have essentially 'flat' response (minimal bass peaking). The 2512 performs as described by HaphAsSard above, with all reasonable alignments peaked.

These results indicate that the box volume is on the low side for all of these drivers. If deep fundamentals are not desired, these drivers are all good choices. If deeper bass is preferred and maximum volume is not a concern, some 10 inch drivers will yield deeper bass in this cabinet with reasonable efficiency. There are differences in weight and sensitivity that may be important to the OP. These drivers also differ in their mids, and these differences may be important.

If the OP would post about his tone preferences, how important maximum spl is, musical genre and typical venue a more helpful recommendation could be made.
 
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#12
Thanks!

Currently I have a Gallien Krueger 212MBE-II that I love but it's unreliable and I've blown 2 speakers in the last year.

I'm looking for something more rock oriented, I play an Ampeg SVT3 Pro with my settings flat.

I'm open to any speaker but prefer a neo for the weight.

Thanks for the help!!!
 
#13
It's a somewhat unconventional box design and I don't think there is much that's close to the OEM drivers in off the shelf solutions. IIRC, those drivers are somewhat low Xmax, high Xlim, and very high sensitivity. While they don't have a lot of deep bass, they sound very similar to my sealed Berg NV's, so I don't find them lacking. Their punch is outstanding, and the drivers have a very musical quality to their breakup. The OEMs are expensive, but I'd stick with them, especially with that nice oiled birch box. I wonder if you can get them re-coned - that would save a bit of cash. You could probably break even if you decide to sell it. With non-OEM drivers, you're likely to end up with a heavy, mediocre sounding box.
 
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#14
Cat Cobra said:
Thanks!

Currently I have a Gallien Krueger 212MBE-II that I love but it's unreliable and I've blown 2 speakers in the last year.

I'm looking for something more rock oriented, I play an Ampeg SVT3 Pro with my settings flat.

I'm open to any speaker but prefer a neo for the weight.

Thanks for the help!!!
Click to expand...

For 'rock oriented' and low weight, I would suggest the 3012HO (flat response, articulate, least deep bass of the 3 recommended drivers though still adequate for 4-string, neutral mids and highs, very sensitive, light weight), the 2512 II (rich mid and upper bass, though still reasonably articulate, somewhat forward mids, very sensitive and light weight) or the B&C 12LC64 (deepest bass, though very articulate, smooth mids and highs, very good sensitivity).

To minimize chuffing (port noise) you are going to need at least two 2 inch diameter ports, or one 3-4 inch diameter port.
 
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