Design flaw of the 402. The vent at the bottom. I was about to JBL 140 this cab because it sounded off at higher volumes. Seems like a mouse job...
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The Acoustic Club
- Thread starter The Owl
- Start date
Nooooo it was an alnicoooo :-(
Damn and the 15" cutout is too narrow for a JBL. I had the same issue with the 126, and had no problems with the 406w and 408.
Damn and the 15" cutout is too narrow for a JBL. I had the same issue with the 126, and had no problems with the 406w and 408.
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That's weird. My 402 is loaded with the JBL 2205A speakers (poor man's D140-F) that were in there when I bought the cabinet. It's been a while since I had them out, but I don't recall seeing anything around the baffle cut-out holes that looked modded. The 2205A is supposedly identical to the D140-F except with a paper dust cap -- the frame looks the same to me.
I had E140s and now D140Fs in my 406, never problems. Couldnt fit a K130 in my 126. And also no K140 or E140 in the 402. It's a matter of a few mms, the inner round edge of the JBL only goes in a few mm and then it's blocked. It's just strange that the must have had two different diameters for the cutout. That'll a be jigsaw job
@JacklegBass
I have read some of your old posts on a phase shift between channel A and B on the 330. Does it mean you get cancellation of your waves instead of summation? Any way to fix that? I read some nice stories on the 320 where it sounds amazing combining both channels, so it would be a shame if that's not possible with the 330. By the way tomorrow I have the 320, and on Thursday the 330 is being shipped to me. Looks like driving to Eindhoven to deliver a 220 to a Led Zep tribute band gave me the right amount of ACC karma to stumble on these two beast. Funny, the 320 was actually the one I missed last year. Owner selling it because he already had a 320, and now found a 370 to power his 360
I have read some of your old posts on a phase shift between channel A and B on the 330. Does it mean you get cancellation of your waves instead of summation? Any way to fix that? I read some nice stories on the 320 where it sounds amazing combining both channels, so it would be a shame if that's not possible with the 330. By the way tomorrow I have the 320, and on Thursday the 330 is being shipped to me. Looks like driving to Eindhoven to deliver a 220 to a Led Zep tribute band gave me the right amount of ACC karma to stumble on these two beast. Funny, the 320 was actually the one I missed last year. Owner selling it because he already had a 320, and now found a 370 to power his 360
I really like the 320. Especially combining both channels.
The 330's Master Volume branch circuit flips phase, so the signal of the channel that's assigned to it (via the front panel MV switch) is inverted relative to the other channel.
You can mainly hear it when you sum the channels with their Volume and Bass tone controls roughly matched and the Master Volume active for one channel, in which case you'll wonder where the bass went. It shouldn't be a big deal if you're summing with mainly highs in one channel and mainly lows in the other, and it's a total non-issue if you're not combining channels at all. The only time I combine channels is for adding a little of the Master Volume circuit's glorious dirt to the other channel's clean signal, so I'm already cutting the Bass level in the dirty channel to keep the low end solid.
Since it hasn't been an issue for me I haven't really been motivated to do anything about it. In theory you could simply change the tap on the 2nd common emitter device in the Master Volume circuit, but you should be able to accomplish the same thing with an external phase inverting device via one channel's preamp OUT/IN jacks. If I ever get bored enough to try either I'll report back.
BTW, if the Master Volume is turned off completely with a footswitch then phase should be a total non-issue and the 330 should behave just like a 320 with reverb.
EDITED 1st paragraph for clarity
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Thanks. That's clear. I have A LOT to experiment with the coming weeks. Ill convert one of my 125 footswitches to a 320/330 switch, and rewire reverb to A/B switch according to your diagrams.
It's certainly your call, but if it was me I'd sacrifice the EQ on/off control before letting go of the Reverb on/off control. If you typically run with the EQ off you could just hardwire it in the connector shell.
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402 JBL'ed and ready for the 320 tomorrow
K140 on the top, and the nicest E140 you'll ever see on the bottom
K140 on the top, and the nicest E140 you'll ever see on the bottom
That's my fave combination from my ACC bundle. I'll get to trot it out in a couple months at an annual outdoor event
(shhhh......I feel like a kid waiting for Christmas
)
Why do you prefer the 402 over the 406w? Besides sound, I find the 406w a lot easier to move around.
Not absolutely sure I do. The 406w went last year. The 402 just needs a chance to sing. I didn't have it last year at the time of the event.
Yes, agreed, the 406w is probably easier to move.
Awesome. What speakers are in it again? CB158s? I loved the sound of the 154 in the 126 combo.
By the way, the 320 is home
By the way, the 320 is home
Awesome. What speakers are in it again? CB158s? I loved the sound of the 154 in the 126 combo.
By the way, the 320 is home
How do you like the 320? I'm kinda indifferent to mine, but I have an embarrassment of riches with the 360s that I own.
Congrats on the 320 arrivalAwesome. What speakers are in it again? CB158s? I loved the sound of the 154 in the 126 combo.
By the way, the 320 is home
My 402 came from GC used online and was loaded with E.V. Force 15s, which have very compatible specs to the original drivers.
The 402 fits in the backseat in any four door car, that's not the case with the 406. And the 402 has wheels and you can load gear on it. The 406 might be a little better sounding, but the "compactness" of the 402 is a huge advantage in my book. There are not that many 2x15 cabs, if any, that beats the 402s size/performance ratio.
Congrats on the 320 arrival
My 402 came from GC used online and was loaded with E.V. Force 15s, which have very compatible specs to the original drivers.
You can't go wrong with EVs. I'm still on the lookout for a pair of 15Bs. I had a pair for a very short time, but flipped them with an Ampeg V6-B cab. They sounded at least as good as JBLs, darker but huge tone
