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Jensen C12L

I'm no authority, especially on Jensen, but I think when it comes to their vintage AVS reissue stuff you're better off not trying, they're not really built for high wattage bass. Granted, put them in a smallish sealed cab and maybe only give them twenty Watts with a high pass filter and I don't see what could go wrong, but again, no expert here.
 
I'm no authority, especially on Jensen, but I think when it comes to their vintage AVS reissue stuff you're better off not trying, they're not really built for high wattage bass. Granted, put them in a smallish sealed cab and maybe only give them twenty Watts with a high pass filter and I don't see what could go wrong, but again, no expert here.

Thanks, they are in a Titano 6500B I was thinking the B may stand for bass as in bass accordion I think I'll by pass the speakers to an extension cab to keep the unit all original and to not destroy some amazing antiques that sound like heaven.
 
I'm no authority, especially on Jensen, but I think when it comes to their vintage AVS reissue stuff you're better off not trying, they're not really built for high wattage bass. Granted, put them in a smallish sealed cab and maybe only give them twenty Watts with a high pass filter and I don't see what could go wrong, but again, no expert here.

These are not reissues. According to the numbers in the codes, they appear to have been built in 1960 or 1970. They may be great guitar speakers - or nice speakers for a vintage low-powered bass amp - but I wouldn't use them for a modern bass rig pushing more than 80 watts or so.
 
my guess is they were originally 65-80w power handing guitar speakers (jensen website doesn't lay c12l but using my incredible powers of deduction, c12k is 100w while c12n is 50 watts, so L is somewhere in the middle)
if you have a couple of them they might work on a lower powered bass rig (I'm thinking like an old 100w solid state would subs good with a vintage guitar speaker (back when they didn't really make guitar or bass or organ speakers, just musical instrument speakers)
you sure you didn't miss a number with the 22019?
220 is the code for jensen, which should be followed by at least a 3 digit (if not 4 digit) date code
my guess for age would place these in the 70s or later. mostly alnico before then (in what i've come across, at least)
editted because phone posted before i was done
 
Invalid Link Removed was all my brief google search found. looks like the correct speakers for that kinda amp
as long as the voicing sounds pleasant for bass, it looks like a fun amp
if it's too honky or something, some mods may be in order

nice find!

edit: you're the one who commented there lol. those look just like some of the speakers out of fender amps from that era. i dig that the preamp and power sections are separated like on my excelsior
 
my guess is they were originally 65-80w power handing guitar speakers (jensen website doesn't lay c12l but using my incredible powers of deduction, c12k is 100w while c12n is 50 watts, so L is somewhere in the middle)
if you have a couple of them they might work on a lower powered bass rig (I'm thinking like an old 100w solid state would subs good with a vintage guitar speaker (back when they didn't really make guitar or bass or organ speakers, just musical instrument speakers)
you sure you didn't miss a number with the 22019?
220 is the code for jensen, which should be followed by at least a 3 digit (if not 4 digit) date code
my guess for age would place these in the 70s or later. mostly alnico before then (in what i've come across, at least)
editted because phone posted before i was done
I tend to agree. I saw a vintage C12LL from a Gibson/Lowrey T2 amplified organ cab. The second L in this case I'm pretty sure signifies "Low Frequency" or bass speaker, the first L then would probably be a power designation. A rare speaker in my experience.
 
Without knowing a lot more about the drivers, I think you will find that it's difficult to design an enclosure that really works well. For example, would the driver perform better in a 1CF or 2CF box, what kind of acoustic loading does the driver need at low frequencies, what is the voice coil's position within the gap,what can be expected of it's mechanical limitations.

These are all things that are useful to know and understand in order to design for low frequency performance.
 
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Without knowing a lot more about the drivers, I think you will find that it's difficult to design an enclosure that really works well. For example, would the driver perform better in a 1CF or 2CF box, what kind of acoustic loading does the driver need at low frequencies, what is the voice coil's position within the gap,what can be expected of it's mechanical limitations.

These are all things that are useful to know and understand in order to design for low frequency performance.

they are jenson c12

they do the same 20 to 35 watts any guitar speaker does

there is no magical acoustic modeling for them. they get bolted into a open back cabinet and sound like open back speakers.
1 cubic or 2 cubic dont work well at all.
they behave same way as typical celestion speakers or the eminence legends that have all copied or use similar design as the celestion G12

they get very boomy in sealed boxes. then again so do celestions and people stick them in small boxes anyways.

the L version is like the "55hz" G12 or " bass model" compared to the 75hz version

they will work for bass kinda. they fart out really really quick. good for 30 to 40 watts tops as a pair wth bass


the legends and G12 wont model well to any 3rd or 4th order box design. only one guitar company has figured it out.
as you know eventully if you tune a cab way way to low. eventually the impedance curve performs like a sealed cabinet.
you put them in 2 cubic feet per driver then tune way way way down low with a rear port. this ever so slightly takes down the boom. otherwise they model around 3 to 4 cubic feet for single driver to not be boomy. or just run open back because the design is intended for that. .707 Q will be huge around 5 or 7 cubic feet. intentional by design to actually have bass open back.

fender and many others found out the hard way or just discovered the box needs be extremly large to not be boomy running sealed. probably why they used very large boxes for later showmans instead very small early bassman cabinets
 
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WOW!!!! You guys blew me away. I haven't been back here in a while because I have been just using a 4x10 cabinet with the amp and have the 2 Jensen's disconnected as to not ruin them. I've been using this setup to play bass at our church because the tone to me is superb. On rare occasion if someone else is playing bass I'll reconnect the 2 Jensen's and use it for guitar. So clean and smooth.

Do you guys know if the Jensen's are 8ohm each? I need to take my ohm meter with me Sunday. I've been considering a 2x10 build to set the amp on top of instead of beside the 4x10.

PS here's a picture of them.
Titano  guts.jpeg
 
Disconnecting 2 drivers is a quicker way to ruin the speakers, as will playing bass through them in an open back cabinet.

you might want to read some of what’s been posted, but if you haven’t been back since asking your questions it seems that you aren’t interested in the answers (and the effort made by those who took the time to answer them) anyway.
 
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Disconnecting 2 drivers is a quicker way to ruin the speakers, as will playing bass through them in an open back cabinet.

you might want to read some of what’s been posted, but if you haven’t been back since asking your questions it seems that you aren’t interested in the answers (and the effort made by those who took the time to answer them) anyway.

How will not using the drivers ruin them?
 
How will not using the drivers ruin them?
It will ruin the remaining two more quickly.

OR, there is a communication problem and the drivers are in a different cabinet, not sharing the same air space as the other drivers you are using?
 
It will ruin the remaining two more quickly.

OR, there is a communication problem and the drivers are in a different cabinet, not sharing the same air space as the other drivers you are using?

Ah, I see where the miss communication is. Yes. the Original drivers will stay in the combo amp disconnected and the 4x10 and 2x10 are separate cabinets completely. Now I see you thought the 2 1960's jensens would be in the cabinet with the drivers that i'd be using. Thanks,