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Cabinet problems...
- Thread starter WillyW
- Start date
Speaker cable? Did you use the same one, and do you have other cabs that work fine with the amps? Does your bass need a battery?
Here are some component pics...
I would assume the speakers and horn are 8ohm, and they look to be wired in parallel.
Here is where I get lost.... What the heck is all this heebadeejeebadee?
Should I just bypass that board thing, and wire in series? Will adding the horn in series do odd things? Lose the horn?
I would assume the speakers and horn are 8ohm, and they look to be wired in parallel.
Here is where I get lost.... What the heck is all this heebadeejeebadee?
Should I just bypass that board thing, and wire in series? Will adding the horn in series do odd things? Lose the horn?
If it's wired in series, one loose connection will FUBAR the whole cab.
Could the inputs be corroded or damaged?
I was hoping I could help find a solution that didnt involve taking things apart.
Could the inputs be corroded or damaged?
I was hoping I could help find a solution that didnt involve taking things apart.
Whoa there , Chief, don't bypass the filter. Your horn will appreciate it very much that you leave it in.
Verify each speaker is ok with a battery. Write down the connections because you have to remove tbem before you test them.
Verify each speaker is ok with a battery. Write down the connections because you have to remove tbem before you test them.
It looks extremely clean on the inside, I don’t see any signs of corrosion.
I’ll check the connections on the speaker I didn’t take out..
I’m trying to stay away from the board thing, it looks confusing.
- Feb 12, 2006
- 60,961
- 5
- 220,636
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Don't start creating new problems, leave the crossover board alone.
Don't change anything with the configuration of the cabinet.
Do you have an ohm meter?
Can you follow troubleshooting instructions?
Can you stop when you find yourself in over your head.
Don't change anything with the configuration of the cabinet.
Do you have an ohm meter?
Can you follow troubleshooting instructions?
Can you stop when you find yourself in over your head.
all the connections look clean and are solid, with the possible exception of the speakon jack.
the speakon jack is behind the crossover board.
Do you have an ohm meter? Yes and a very basis knowledge of how to use it
Can you follow troubleshooting instructions? Yes
Can you stop when you find yourself in over your head. Yes
the speakon jack is behind the crossover board.
Do you have an ohm meter? Yes and a very basis knowledge of how to use it
Can you follow troubleshooting instructions? Yes
Can you stop when you find yourself in over your head. Yes
A driver is what a driver is.
the board thingy is just a crossover for the tweeter
That B&C driver 12" is recommended for a volume of 1.4 cubic feet and tuned to 65hz
in plain English that means..... no bass
these belong in/ designed for a tiny tiny wedge monitor
if that was the selling point of the box, being very small and compact
expect no bass.
assuming the builder used 65 hz for tuning. has no place for a bass amplifier.
the actual Fs of the driver is 52hz which is already not much impressive news
im sure the drivers are ok, but these are basic wedge monitor drivers
and since the Le is very high at 1.1mH
ill assume they have very limited detail up top for highend
not trying be negative but vey small boxes are going to be thin sounding.
bigger bass is found with 2 to 2.2 cubic feet per driver. and using drivers with resonance that dip much much lower than 52hz
the board thingy is just a crossover for the tweeter
That B&C driver 12" is recommended for a volume of 1.4 cubic feet and tuned to 65hz
in plain English that means..... no bass
these belong in/ designed for a tiny tiny wedge monitor
if that was the selling point of the box, being very small and compact
expect no bass.
assuming the builder used 65 hz for tuning. has no place for a bass amplifier.
the actual Fs of the driver is 52hz which is already not much impressive news
im sure the drivers are ok, but these are basic wedge monitor drivers
and since the Le is very high at 1.1mH
ill assume they have very limited detail up top for highend
not trying be negative but vey small boxes are going to be thin sounding.
bigger bass is found with 2 to 2.2 cubic feet per driver. and using drivers with resonance that dip much much lower than 52hz
Make sure both 12s are wired in polarity with each other. If they are wired out of polarity the sound waves will cancel.
You can check polarity by momentarily connecting a small battery and observing the motion of the cones. They should both move in the same direction.
- Feb 12, 2006
- 60,961
- 5
- 220,636
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Hold on a minute, the crossover on that speaker has a low pass filter on the woofers.
While the speaker may not have ideal low end response, it's not inherently "extremely thin" with low volume and noise.
- Feb 12, 2006
- 60,961
- 5
- 220,636
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Ok, the first measurement is the D.C. resistance at the input jack. Pins 1+/1- carry the signal. It should read about 3 ohms.
The next is the polarity test that @Wasnex described.
well according to the listening report its thin with multiple amps.
its literally a 12" designed to be stuffed in a 10" volume
which is amazing for Efficiency
otherwise you wont get much from the driver
the Fs will rise in a tiny box. since the manufacture literally recommends a reflex at 65hz
i really wouldn't expect much from the driver
it is what it is
its literally a 12" designed to be stuffed in a 10" volume
which is amazing for Efficiency
otherwise you wont get much from the driver
the Fs will rise in a tiny box. since the manufacture literally recommends a reflex at 65hz
i really wouldn't expect much from the driver
it is what it is
I guess the question is...did this just start happening? Did it sound different before? Or did you just buy this cabinet?
According to Matrix this was designed as a guitar cabinet and is not recommended for bass.
indeed it is a guitar cab, and with a tweeter no less! https://d1m1xo0e2ebpa9.cloudfront.net/media/mconnect_uploadfiles/f/r/fr_212_manual.pdf
from the manual:
"It is however not recommended for use with bass guitar, drums and other instruments which depend upon reproduction of the lower bass octaves (frequencies below 55 Hz as a rough rule of thumb in this instance)."
"It is however not recommended for use with bass guitar, drums and other instruments which depend upon reproduction of the lower bass octaves (frequencies below 55 Hz as a rough rule of thumb in this instance)."
