5f6a bassman speakers configuration.

[matt h]

(deleted)

[Phil_S]

Weber offers its Cali 15" with a 2 ohm option in both ceramic and alnico.

[RWood]

Look into EV TL806 or Mesa Thiel cabinet plans no matter which speaker you choose. The right cab design will make any speaker sound better.
Simple google search will find them.

My EV TL806 I built with Weber 15" for my Bassman is far and above the best.

[davebolden44]

All this speaker talk has got me thinking. Has anyone used multiple speaker sizes in a single cabinet with any success? I googled the subject but to no avail.

[Leo_Gnardo]

All this speaker talk has got me thinking. Has anyone used multiple speaker sizes in a single cabinet with any success? I googled the subject but to no avail.

Starts lookin' like a bass or keyboard or PA cab after a while, and there's no reason "why not" until you understand you'll be carrying around a large heavy box.

Weber has a 2 ohm 15" !?! Well dog my cats, there's your answer for a 15! I had no idea . . . shoulda had a blink at their website.

[bluesfendermanblues]

All this speaker talk has got me thinking. Has anyone used multiple speaker sizes in a single cabinet with any success? I googled the subject but to no avail.

A friend of mine had a 1x12 Fender Blues Deluxe, that we gave a new baffle in order to add a 10" Weber alnico.

We had to backmount the stock 12" and frontmount the 10" in order for them both to fit the stock combo cab. They were wited in parallel and the amp sounds really great - with no other mods.

[rp]

just talked to the ebay guy. 2 ohm tap as I suspected

Most versatile project you could have chosen, 30 minutes w/ a soldering iron and you can have Tweed Bassman, JTM45, JTM50, JMP50, 2204.

Unless you are going to do a 4x10 I would very seriously think about getting an OT w/ 2/4/8 ohm taps. Money spent here is better than on a 2 ohm 15”. If you find you aren’t crazy about the 15 you now have a 2ohm white elephant and still have the 2ohm OT problem. Plus, the extra taps are essential if you want to play around with Marshall mods as you’ll need to move the NFB to the 8/16 taps.

In life you run into 4/8/16 cabs all the time, friends, clubs, rehearsal spaces, but you won’t be able to use them or even try them out. The Classic Tone OT is $70 unless they’ve gone up. Mojotone or Weber should offer a Heyboer made 2/4/8. I had Heyboer wind me one with 2/4/8/16 taps was ~$120 shipped, but that was a while ago. You can put your old OT on ebay or the forum classifieds.

The kit looks good (though I’m puzzled the seller didn’t choose a 2/4/8 OT for the kit). If those are 715/6 caps I’ll save you the hassle and time and suggest you use 150s or PS6s from the start. A whole amp of 715s isn’t going to win any vintage tone awards. 6PSs clearer, brighter, 150 smoother, darker. You can do this later but it’s good to up the filter caps to JTM45 32/32, 16/16 or even all 32, especially with 12s or a 15. The Tweed’s fantastic but the Blues Breaker is more fantastic IMO.

There are some undocumented variations to the 5F6A that are worth playing with. The last ones, 1960, are the most sought after, not sure off hand but it’s all on google, variations are some .022 caps instead of .1 somewhere, 6800 vs 10K PI tail resistor, stock or Brown Concert presence. I can’t recall what I settled on, it was years ago, but I think mines more JTM-45 at the moment.

Also get yourself a Mojotone plug-in SS rectifier thing, the simple one not the CopperTube thing. There’s hardly any voltage difference btwn a 5AR4 (or at least real Mullard GZ34) and SS, and when you want more hard rocking punch you can have it in a minute.

Leo, I think Weber will custom make a 2ohm anything, even mod a recone.

[pops]

All this speaker talk has got me thinking. Has anyone used multiple speaker sizes in a single cabinet with any success? I googled the subject but to no avail.

Years ago i built a 5f6a in a head with a 4X8 cab with a single 12 in the middle. Worked great. A friend of mine has a 12 and a 10 in a twin so he has more variance in sound than 2X12's. He has been using it for about 15 years now. Sounds great.

[Richie]

Gibson was doing the different size speakers in one cab many years ago.
Some even had oval shaped speakers. One had 4 oval speakers [2 on each side] and a single 12"

I'd have to look up the model but it had a control that you could blend in which set of speakers for different sounds. Similar to the balance/ fader control on a car stereo.
But some used 10 and 12" or other combinations. Gretch and others used different size speakers too.

Also, no matter how much you compare speaker size or how much air they move, don't forget they have their own unique sound to them or frequency.
I think one reason the super or bassman 4x10 sound like they do is part of the speaker setup.
Many people like using the 15" speakers for guitar. Mark Farner,SRV used the Vibroverb, and I believe Frank Marino liked 15" speakers.
Here are a couple links to some 15" stuff. Check out the Eminence Legend 1518

https://www.youtube.com/watch?v=HGxZO72 ... e=youtu.be

Also, just me, but I like 4x10 more than 2x10,and 6 or 8x10 more than the 2x10.

[vibratoking]

In life you run into 4/8/16 cabs all the time, friends, clubs, rehearsal spaces, but you won’t be able to use them or even try them out.

??? You can safely hook up 4/8/16 loads to a 2 Ohm OPT. You won't hurt the transformer. There will be a sonic impact, but I have done exactly this for many years with very good results.

That said, I would not proceed with a 2 Ohm 15" speaker.

[rp]

In life you run into 4/8/16 cabs all the time, friends, clubs, rehearsal spaces, but you won’t be able to use them or even try them out.

??? You can safely hook up 4/8/16 loads to a 2 Ohm OPT. You won't hurt the transformer. There will be a sonic impact, but I have done exactly this for many years with very good results.

Technically I shouldn't have said "won't" rather "not preferable" and I'd have no problem running into 4 ohms and granted the mismatches are in the right direction, but I'd start to fret with a 2ohm OT at 8 ohms and I wouldn't risk 16 even w/ soft playing. If I got it right aren't the 6L6s here seeing 32k at 16 ohms? How far can you go before your risk dreaded fly-back voltages? Maybe the fly-back concern is like getting hit by lighting and rare, but I'd rather be careful.

The bummer with only having a 2 ohm tap is that it's all at one end of the usefulness scale, as opposed to the most useful, 8ohms, where you can go to 4 or 16 without issue and tolerable sonics.

Back in my younger days I saw a lot of amps burn up from not knowing anything about plugging into stuff so I asked, learned and stayed cautious. Funny it was always Marshalls smoking out the back, and now it hits me why - 'cause they are heads and you plug them into whatever you find with whatever the impedance selector is set too, but Fender combos you usually play as is.

[Phil_S]

+1 on getting 4/8/16 OT. Build a head. Maximum versatility. Easier to move around.

[matt h]

(deleted)

[davebolden44]

i have some scumback m75s laying around here. maybe i will make it a 212 and save some money. 8 ohms wired in parallel for 4 ohms should be ok. i need to ease my way into this as i am a novice builder, but i am sold on getting an ot with multiple taps down the line. the seller also offers a deluxe kit with the option of single/multiple tap transformers. a shame that wasn't the case for this one but im not upset. im pretty stoked to get started. i have heard good things about pine cabinets so i think i will do that with dovetailed corners.

[ampgeek]

Right on Dave!

A 2X impedance mismatch isn't going to kill anything. Some might say that it is even hard to notice the difference in tone/feel/power in certain builds and configurations.

Rock on,
Dave O.