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I made a few curved walled speakers with different configurations, using 6.5" to 10" woofers. The rose veneer finish uses a curved triple layered 1.25" thick wall with ample bracing. 4* 6.5" woofers with a 5.5" MTM. Returned the above measurement using REW with slight equalisation using a DBX...

The equaliser comes in between the Turntable/CD player and the Audiolabs amplifier. I have gone through the manual and could not see any equaliser inbuilt, so unless I have not read properly, you would need to attach a separate equaliser in between your CD player and the Audiolabs amplifier. If...

Couldn't agree more. If you equalise a 4/5/6 inch woofer to go below 70/80 hz at reasonable db levels the sound quality might just not remain the same. I have experimented with Peerless NE180 in a 0.5 cuft box, though it has a fs of 44 hz, it needs quite a bit of boost between 40-100 hz to sound...

So now I need to do one in natural slate too? Maybe natural slate is better than granite?

I am keen to experiment with a granite design myself. My current flagship speakers (photo attached) really do a decent job and just under $5k in the whole setup, people are quite amazed at the music out of these. The top is a 3 way crossed over at 140 hz from the sub, and the upper midrange at...

These are the most beautiful speakers I have seen. These look better than aluminium or wood or any other exotic material speakers I have come across. Will now need to hunt up the forum to see how these/generally granite perform. I have a few slabs of granite and Peerless 10 inch SLS/XLS handy...

Agree. If one can hook up 3/4 amps and even an analogue DBX 234 or similar crossover, it just becomes easier achieving satisfactory performance out of a DIY effort.

Allow me to add point 3: Or you wish to achieve a $40k set of speakers at around $10k. Whether or not it measures truly to the reference system, still it holds similar or higher value to the DIYer.

Very precise. And after the first buy, we are ready to be conned absolutely similarly the next time, in a bigger shop, by a salesman wearing a more colourful tie, with a bigger brand, multiple x on the dollars spent. And bingo, we are back where we were at stage zero. We cannot bear to listen to...

Recent experiences since 2019 has taught us that we cannot always trust scientific papers and sites which publish those which are not peer reviewed, perhaps multiple reviews at that. It has now been proven that in today's world of unlimited money printing it is quite easy to sway anyone's...

Brutally, bluntly put. Now I have to read 149 pages!

I just chanced upon this post and have now gone through all the responses. Since the responses cover pretty much everything with all levels of advices we can receive, I had thought of giving it a skip but then felt compelled to add my notes for whatever they are worth. 1. Maybe many of us here...

What an intriguing thread! Took most of my morning here in India reading this thread almost completely and am now tempted to put in my version of end game speakers I have been listening to for a couple of months now. This took me several months of iterations experimenting with 12 and 15 inches...

This is very impressive stuff. The attention to detail and the precise cnc cuts on the enclosure braces and overall designs and fit tells us these should be more impressive than plenty of commercial offerings at much higher prices. I completely agree diy is not for everyone and that overall...

The first time Nelson Pass came up with his constant current source single ended amplifiers with a DF at 2 or zero or 8, he was greeted with criticism all around. Today we find amplifiers with infinite negative feedback loops claiming DF in the thousands. I have listened to some of these and...

Absolutely will write. This one took me several months of speculation plus hit and trial even after simulating box designs and driver responses. Then I decided to do separate units, one for the sub woofer for coverage upto 100 hz, and the next above 100hz, but placed in a single line for a large...

super true.

Thank you. All suggestions very valuable. Have tried one or two myself but will action the rest and update you of progress. I am blessed to have two very capable listeners in my office. About a year and half ago I wondered if I could try my hands in building high quality speakers and have been...

My bad, the drivers are CHR70, never knew the difference till you pointed out and then immediately went and looked and they were CHR70. True, what you say.

Thanks. What you say is to the point. I have actually tuned this to 36 hz or so and the bass is quite good. I have also built an almost anechoic chamber using 4 layers additional walls in between the main walls, and this room and the outside terrace in my office are my measurement areas. I dont...