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The use of multi-subs is IMO a necessity for achieving quality bass. Sealed boxes are always easier to integrate into a system and sound better. The idea is to smooth out the nulls and peaks. DSP can not do this. Peaks in the modal region leads to 'one note bass' Nulls? Well that is a...

OK, first lets clear up what appears to be a misunderstanding. We are not building a line stage amplifier. There is no volume control included, it is to achieve I/V conversion and to amplify a weak signal up to line level so that it can drive an amplifier input. If you are looking to build a...

Over here? Well not a lot. Audio is not much of a thing here, lots of rain, plenty potatoes, cold and grey and lots of rain. We're in rural Limerick in a stone cottage with walls 600mm thick so I can crank the system to any level.

Place a wanted add on this site for ECC88 or equivalent which are one of the most common. Other valves will work too. It's a simple circuit with only a few components but will take the performance up a level or two. The TDA1541 is a really great chip and still highly rated and used by designers...

Visit flea markets, boot sales or pawn shops for Marantz or Phillips CD players, they use the same mother boards and can be found unloved and unwanted for peanuts. Seems like you intend to change out the TDA yourself, so if you can DIY you can achieve an amazing performance by coming straight...

Not sorry to see MQA disappear. The musicians make a lot less money if they join the MQA camp. DAC manufacturers also need to buy licenses to incorporate MQA into the design. This is about control like everything else happening around us.

Hey, I'm in Ireland and everything here is jammed up. Big. I ordereed from France and took weeks to get here. Components from Hificollective UK took 10 days. A carrier pigeon would have been faster. Many emails have gone unanswered. Good Luck

I don't believe bacteria is a problem 🙄 There are millions of bacteria just in your mouth. I worked in Puerto Correno, Colombia for some time where the average temperature is 33 Celcius, so no water heating necessary nor desired. Red-bellied piranha, caimen, bot-fly and other biting...

@Strainger, thanks, interesting read.

It is definitely worth pursuing IB woofer system. Many years ago I heard a well set-up IB and still remember the experience. 8 x 12" drivers, some crossed at 40Hz and others at60Hz, I think. These were mounted in his ceiling and the manifold exited into the room with what looked like a...

Then there is Expectation Bias 😉

Interesting thread. My girlfriend, now my wife, left SA about 18 years ago to teach in UK. We got married 6 years ago and moved to Ireland. Allowed in because as a UK citizen she claimed common travel agreement, this before the Brexit debacle. We bought an old leaky Irish stone cottage with...

Mixing brands is fine. Sealed subs are easier to get dialed in. Get a measurement system going, it's not expensive and is the best way to position and adjust the subs.

I have never heard Klangfilm drivers but know the Altec 515 and 416 which is one of my all time favourites and all of them have low Qts and as mentioned above I prefer. MJ King's take on OB revolves around the Eminence Alfa with high Qts 1.26 His reasoning is worth a read, think he has a...

From much research and experimenting I have found the narrower the baffle the better the image and stage. The JE Labs baffle sounds OK and produces some bass but not enough. To get real bass from OB takes huge effort and great expense and better bass can be simply achieved by using subs. So the...

Hey guys, check out this link: https://lectromec.com/unwanted-energy-storage/ Well understood RLC parameters are only part of the issue. As per above article the dielectric constant is paramount. Neotech makes a UP-OCC wire which is possibly the best available IMO. I have not tried TripleC...

The bass produced by your full rangers is what is causing the worst of the room problems. They could be moved to where they have a smoother bass response but then image and soundstage is ruined. Adding movable bass sources is the way to smooth the low frequencies. 2 subs are better than 1, 4...

Effective treatment requires the 3 axes be dealt with, that is: floor to ceiling, side to side and back to front. You don't mention if you have a rug or carpet. I prefer absorption on the ceiling for 2 reasons regardless if carpeted or not. A carpet being thin and without air gap below is a...

Many kit speakers available but some just OK. GR Research designs are good with properly sorted XOs which is the heart of any speaker. Have not heard the ones you mentioned but some others. I built 2 of his servo-subs in sand-filled sealed boxes and they are superb. Take a chance, think you...

@Drifter ??? I am having a problem believing your statement "could hear my neighbour think" I now live in Co. Limerick and haven't met anybody who can think :rolleyes: @naks, I see you're off to Portugal so better wear 2 pairs of socks and 2 pairs of shorts to keep warm, it's -2 C here but...