Peerless Subwoofer with Passive Radiator
I'm working on a Subwoofer using the Peerless 830500 XLS 12" speaker
and 830549 Passive Radiator, but I have a question.
Whenever a Subwoofer schematic is shown, it usually looks like this, with the
speaker and passive radiator on the same side of the enclosure.
What I'd like to know is if there are any valid reasons to avoid the configuration
shown below, (my preferred option) with the speaker and passive radiator in line
with each-other at opposite ends of the enclosure?
The Subwoofer project is based on the Peerless application note found on their
website. It requires a 35 litre enclosure.
Thanks in advance,
You have to take care of the out of phase of the radiator with respect to the woofer (which it always is, you just want to limit it somewhat).
Your configuration might even have an advantage with that respect. placement could be an issue here if it is close to a wall
lower selection of cut-off frequency will create less problems here in general.
I've used an XLS10 downfiring with a radiator on the front with great success. The sub is used as coffeetable and free from walls for more than 1 meter. The crossover was kept below 50-60Hz. I don't know whether it would be as succesfull if the crossover is significantly raised
It works fine, it is only the practial aspects with placement in the room that might be a problem.
Take care to make the box heavy enough, here is a clip of an XLS10 system of 14 litres (!) in a too light box. It wanders...
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