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What do you think about putting a Eighteensound 18LW2600 in this box? https://www.eighteensound.it/media/W1siZiIsIjIwMTgvMTAvMjMvMTFfNDVfMzJfOTg1XzE4SF92MS5wZGYiXV0 I have a prototype of that box. It sounded good with a 18TLW3000 but I sold that driver along with some other subs, so I'm looking...

I have two kind of subs. One that drops off around 37ish Hz, one that drops off at 28ish Hz. I played around using the 28hz subs as infra subs for the other subs, sounded quite nice with a lot of useable output. This got me thinking, have anybody ever DIY'ed a 40-20hz sub for live sound use...

When connecting two LF drivers for a 8 ohm load, is there any advantages/differences in choosing 2x 4ohm in series or 2x 16ohms in parallell?

Several manufacturers use two-part plastic clips to keep foam attached to the inside of grills on subs. Look at EAW SB850/SB1000 for a good example. Anybody know what these are called and where to get them? I'm refurbishing some subs and wish to avoid using glue on the grills. Google came up...

I bought a bunch of old RCF subs at an auction loaded with L18-P200N drivers. Boxes are decent enough, but the drivers needs replacement. Some of them are ok, some of them are blown, there is a mixture of 4/8 ohms and so on. The box is roughly 200L per driver, two round ports in each chamber...

Is there a way of exporting TDA EQ FIR filters to Powersoft? If I understand this correctly, TDA outputs filter in a Matlab file format. Is it possible to convert these? I did a tuning of a prototype using Lake. Sounds good, TDA suggested a couple of minor adjustments. I'm thinking these could...

Need to replace a Lake LM26 in a low-noise environment with high demands for sound quality. It performs flawlessly today except for one major issue, it has too much fan noise. Sadly moving the unit to a different location or sound-proofing it is not an option. Considering a BSS Blu-50. It's...

The latest VoiceCoil magazine has a feature about how to make a simulated anechoic response measurement in a ordinary room. From the manufacturers website...

How far away from a port can a piece of bracing be before it's effect on airflow is considered irrelevant? I'm playing around with a old box and noticed that two of the four ports have bracing and stuff in their way. This is a picture of the worst offender, at the lower right you can se a...

I've been trying to reach Prosoundweb forums today several times, but they seem to be down. Their page won't open on my phone or on any of my computers. Anybody having similar problems?

This was just released. https://www.bcspeakers.com/en/products/horn/1-4/0/ME464 Looks promising.

Looking for a pair of Beam TPL-200H. https://www.beyma.com/en/products/c/amt-driver/1TPL20H8/twt-tpl-200-h-8-oh/

I have a pair of old DAS R-212 in inventory. The cabinets are good (as in looks decent and solid) but the drivers are shot to pieces. I've been thinking about retrofitting them with new 12" drivers as a project. They are roughly 106L internally and port frequency is around 58hz. WinISD gives...

I bought a pair of old JBL 4771A a couple of weeks ago as a learning/spending time-project. Pulled them apart and replaced the original drivers with a pair of RCF 15" drivers and a BMS 4590 I had left over from another project that haven't left the ground yet. Spent most of today measuring and...

SOLD:

Is there a good guide and software package available on the web for designing passive crossovers? I gave up on this years ago when I discovered the capability of DSP and Smaart, but I've been more and more curious about this lately. My previous attempts was nothing to write home about, I just...

Is there any practical difference using a Linear phase 48dB/oct filter versus a Linear phase brick wall that ends up at 49dB/oct? I can get a steeper brick wall filter but then I have to double the alignment delay.

What do you guys think about this design I've attached? I ran into a couple of smooth-sounding Alcons systems this summer and have been thinking about them ever since. Can't justify the cost of buying them, but I can consider DIY-ing something close.

What do you think the upper frequency limit of the two 10" in this design is? https://www.speakerplans.com/index.php?id=mt102

About a year ago I bought a pair of BMS 4590 off a friend and they have been sitting around waiting for something to happen. Looking at using them with a BMS 2236 horn and a pair of 12" LF/mids crossed over in the 600hz range. So the question is, what 12" to use for a front loaded BR box...