I've got two subs that I plan on upgrading the drivers in. They are currently sitting here, but I want to move them to where the TV tray with the amp, crossover, a guitar amp and a part 15 transmitter are with the drivers facing forward.
I want to stack the two amps and crossover on the subs, but the transmitter antenna is maybe 3" from the ceiling and my Adcom GFA 545II amp is taller than that so I could not put both amps there with the transmitter on top.
The transmitter uses two tubes and has several meters. Will it be ok to set the transmitter directly on top of the sub or will the subs cause vibrations that will damage the tubes over a period of time?
I don't want to set the TV tray in front of the subs with the amps and crossover on it as that might interfere with the subs due to being in front of them, but I don't know where else I can put the amps.
Eventually I plan on adding two more amps to the stack when I get my Advent Maestro speakers (going to tri amp them) back from the church I go to as I loaned them to the church until we get the powered speakers in the fellowship hall replaced.
I want to stack the two amps and crossover on the subs, but the transmitter antenna is maybe 3" from the ceiling and my Adcom GFA 545II amp is taller than that so I could not put both amps there with the transmitter on top.
The transmitter uses two tubes and has several meters. Will it be ok to set the transmitter directly on top of the sub or will the subs cause vibrations that will damage the tubes over a period of time?
I don't want to set the TV tray in front of the subs with the amps and crossover on it as that might interfere with the subs due to being in front of them, but I don't know where else I can put the amps.
Eventually I plan on adding two more amps to the stack when I get my Advent Maestro speakers (going to tri amp them) back from the church I go to as I loaned them to the church until we get the powered speakers in the fellowship hall replaced.
Two subs, that are not in the same area, will create 'holes' in a room with no or reduced bass response, due to reflections and balancing.
Always use either one sub, that can be positioned anywhere as the human ear cannor detect where bass comes from, or place them together. Either one on top or the other oe siade by side.
Always use either one sub, that can be positioned anywhere as the human ear cannor detect where bass comes from, or place them together. Either one on top or the other oe siade by side.
The plan is to put the subs stacked like they are now only they will be moved to where the amp and crossover are currently sitting.
Just need to figure out where to put the amps.
That said at one point a few years ago I had one sub under each main speaker and treated them as part of the main speakers and they sounded pretty good, however given the Advent Maestros I wouldn't be able to do that anyways.
Just need to figure out where to put the amps.
That said at one point a few years ago I had one sub under each main speaker and treated them as part of the main speakers and they sounded pretty good, however given the Advent Maestros I wouldn't be able to do that anyways.
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Better not place a tube amp or transmitter on top of a subwoofer, especially not when you regularly turn them up. Audio tubes do not like vibrations, although they are more rugged than you might think (they survive in mistreated guitar amps, but longevity is diminished). It must be said that tubes hold very well in russian airfighters and are not susceptible to nuclear blasts as much as transistors.
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Depends on the amplitude and frequency of the cabinet vibrations and the damping between the cabinet and transmitter tubes. You can easily get the "feel" by hand of the vibration reduction using different rubber, foam or carpet placed under the transmitter.
That said, tube guitar amp chassis are often bolted directly inside the speaker cabinet with no damping with no ill effect.
The original 300 watt Ampeg SVT amp used radio transmitter tubes in the output section and were.
They usually sat on top of their 8x10" speaker cabinets using rubber feet in sockets to keep them from vibrating off.
The amps were put in trucks that might bounce 500 miles to the next gig, then bounced around from the truck to the stage.
Overdriving the tubes (cooked to death..) was usually the failure mode, though hard knocks from transport could make them "D.O.A" (dead on arrival).
Anyway, I don't think you need to worry much untill the transmitter gets shaken off its perch 😉
Two subwoofers that are not in the same area will tend to even out room modes that cause peaks and dips (constructive and destructive interference) in their response.
I once had a sub in each of the four corners in a room in the house. The bass was about the best I've heard and was pretty even throughout the room.