Bryan S

OK Sam you're right about it being off topic here, I started the thread with REW questions and it turned into a general speaker design...

Without knowing more about the driver(s) and enclosure, it is hard to make recommendations as to how you should proceed. In any event...

I wonder if anyone would mind looking at the graph above (summed port+woofer) and give me some impressions? It seems most of the time...

OK, today I went and got a piece of 4" ABS and made a few port tubes, corresponding to 34hz, 38hz, 40hz, and 42 hz. I did sweeps of all...

You will need a tube to put into the hole in the cabinet (Some example parts.). How long it has to be is determined by the frequency...

Ideally, you would want the port tune to be much lower than 50 Hz. A tuning that high will lose a large amount of output below that...

Best ask John PM if Trace Arithmetic is simple numerical or does it do Vector Summing..... I remember Fuzzmeasure could combine Impulse...

Do you think tuning the port lower might show a smoother response, with less (or no) 150hz peak? I know it's got to change it just not...

I've used a couple of calculators, here's the result of one of the calculations. It shows a pretty short port length, not far off from...

Thanks Sam, I'll post those .mdat files shortly (pretty clumsy on this windows rig which I only bought for this purpose). I understand...

As it turns out, the calculator shows -6.4db for the port, so below are the results of the sum, and then the sum when I invert the...

Thank you Sam, those are some very friendly looking measurements. I've measured as you suggest, and this is where I've ended up. Headed...

Hi all, I'm new to the forum but have been using and learning REW for a few months. Lately I've been using REW to measure a prototype...