Augmenting the bass range of my speakers (inc. bi-amping)

[pinkmouse]

Makes sense to me, but then I understand the principle.

As for noise, I have done this kind of thing before, and run up to about 200Hz, but that was with 10" drivers. It is probably worth just fixing one to a bit of sheet material and having a listen with a signal generator.

[SimontY]

Originally posted by pinkmouse
Makes sense to me, but then I understand the principle.

As for noise, I have done this kind of thing before, and run up to about 200Hz, but that was with 10" drivers. It is probably worth just fixing one to a bit of sheet material and having a listen with a signal generator.

200hz isn't so bad... and these blatently won't be close in pure quality terms to my current mid/basses so I don't want to make them play too high! Got to make a trade-off between overall headroom/power distribution and the cheap drivers spoiling the gentle music!

After work and the gym and cooking it's always too late to do anything on a week day, but I'm gonna try to get some work on this done on Saturday!

[SimontY]

Ok, if anyone's interested (or not ) it's time for an update, a picture update.

[SimontY]

My friend modelled the cabinets in Autocad.

Here's some MDF, including the front baffle, prior to cutting. B&Q were happy to do all my straight cutting for free (well, the friendly old chap working the circular saw was, anyway).

[SimontY]

Showing just the internal front drivers resting against the baffle. You can see the port will be a slot.

[SimontY]

I am having to trim the driver chassis on the internal drivers to fit inside the extremely narrow boxes. I will also have to route a portion off the side panels to let them sit correctly against the front and rear baffles.

[SimontY]

For this prototype I'm not sealing the drivers with anything that costs me money, although, frankly I'm not sure this masking tape on frame and cutout will be a good enough seal...what is a good enough seal, must it be perfect?

[SimontY]

And here is what one baffle looks like:
It really is rather heavy!!

[pinkmouse]

Looking good Simon!

I use foam draft proofing strip for sealing drivers, cheap, and works well. You could use blutack or similar for a test box.

[SimontY]

Originally posted by pinkmouse
Looking good Simon!

I use foam draft proofing strip for sealing drivers, cheap, and works well. You could use blutack or similar for a test box.

Good morning and thanks PM, that is a good tip.

Does this wiring look correct to you? I find it hard to get my head around, but I think this config gives 8 ohms, which is the best I can get with 8 drivers I think.