I have a question about using loose insulation as opposed to sheets of it in the Vee or the point ? Any difference ? Use one over the other? And the real 1/2 inch felt over the blue Jean insulation?
In the end, it’s stuff-to-taste so use what you have and don’t worry. They are suggesting something that works, it’s not the only thing that works😀
It is a whole lot easier to get the results wanted with loose polyfill. One can take the sheets and spend (a long time) tesing it into fluff.
dave
dave
And one more question, what would be the size of the octagon cutout and placement.if I wanted to use a super baffles how big would it be. Are the side wings nessessary , thanks ,too many drivers to pick from and different sizes?!
On the polyfil, I have both, not very expensive as opposed to the 1/2 inch felt used on the top of the cabinet, haven’t found 1/2 thick blue jean?, probably the new year will be getting another flat pack from Bob Berner, he’s doing a real nice job with the CNC. My FH 3’s went together in 3 days, excellent fit!!!
Hello everybody, I’m new to DIY, veteran of TriTrix flat pack. For my next project, I’m thinking about a FHXL with 10p. Is there a flat pack available for that in the US? I know they have one in the UK, but that doesn’t help. They don’t even have a shipping option. My woodworking skills and tools are limited to glue, clamps, sandpaper and drill driver.
Any reference to flat pack for FHXL 10p most appreciated.
Any reference to flat pack for FHXL 10p most appreciated.
You do not want to know what shipping across the Atlantic (or Pacific). Typiclally close to the price of the flat-pak.
It is good Bo is suppling flat-paks again in NA.
dave
Well, Good News. Bob is already building the XL flat pack. The more I read, the more I have questions. Here are a few:
Did I make the right decision about 10ps? Would another XL-driver be better? My amp is 150 wpc, I like it loud sometimes, and I’m losing hearing above 12k. My focus is on clearly hearing human voice. And I like bass, but I have a good sub if necessary.
Do I need, or will I be glad I got the drivers EnAbled? This must be done by Xmas. Bob plans to be done next week.
How much breathing room do the XLs need? I’ve seen different opinions. Not sure what the latest thinking is.
I’ve seen a few build pictures with super tweeters. I’ve also seen people say they are a complete waste of time. Any consensus here? Why would a person with hearing loss above 12k care about super tweeters? Well, I’m not the only customer, and I’ve heard (unconfirmed) that the frequency harmonics above the audio cutoff often make the music sound better.
I’ll stop there. Thanks for any input.
Did I make the right decision about 10ps? Would another XL-driver be better? My amp is 150 wpc, I like it loud sometimes, and I’m losing hearing above 12k. My focus is on clearly hearing human voice. And I like bass, but I have a good sub if necessary.
Do I need, or will I be glad I got the drivers EnAbled? This must be done by Xmas. Bob plans to be done next week.
How much breathing room do the XLs need? I’ve seen different opinions. Not sure what the latest thinking is.
I’ve seen a few build pictures with super tweeters. I’ve also seen people say they are a complete waste of time. Any consensus here? Why would a person with hearing loss above 12k care about super tweeters? Well, I’m not the only customer, and I’ve heard (unconfirmed) that the frequency harmonics above the audio cutoff often make the music sound better.
I’ll stop there. Thanks for any input.
Sounds like Alpair 10p was a good choice for you. The midrange is a delight.
150w is way more power than you need, as long as you are judicious with the levels. What amplifier?
dave
150w is way more power than you need, as long as you are judicious with the levels. What amplifier?
dave
Dave, aren’t you the best person to answer the other questions? I sent you a similar email. I’m particularly interested in EnAble, timing, and availability.
To answer your question, my amp is an Adcom 5500.
To answer your question, my amp is an Adcom 5500.
I’m about a week behind on my email… if i may
Room placement, and the amount of damping (both in the box and in the amp) will have a big effect, but the sims show the horn loads down to 35 Hz, so you may have to do some tuning but that bass extention goal should be easily doable.
When Mark Fenlon heard his A10p in FHXL for the 1st time (at Chris’), the look on his face. He asked to us to repeat the cut to make sure.
Of course i would, but i have to watch what i say or i get acussed of being a salesman and not an enthusiastic diy hifi guy. I’ll give you my take in an email.
Lots of rooms, lots of tastes, so yes lots of opinions. I used them pushed up against the FH3 deflectors i had placed against the wall. Say 8”. I have a really nice room.
One can also balance placementt with damping. Too much bass with them where you’d like them, add some damping.
dave
Room placement, and the amount of damping (both in the box and in the amp) will have a big effect, but the sims show the horn loads down to 35 Hz, so you may have to do some tuning but that bass extention goal should be easily doable.
When Mark Fenlon heard his A10p in FHXL for the 1st time (at Chris’), the look on his face. He asked to us to repeat the cut to make sure.
Of course i would, but i have to watch what i say or i get acussed of being a salesman and not an enthusiastic diy hifi guy. I’ll give you my take in an email.
Lots of rooms, lots of tastes, so yes lots of opinions. I used them pushed up against the FH3 deflectors i had placed against the wall. Say 8”. I have a really nice room.
One can also balance placementt with damping. Too much bass with them where you’d like them, add some damping.
dave
Mark still likes FHXL. 🙂 Stefan's flat pack kit (built, obviously) have been the main speakers in the Markaudio room at the North West Audio Show for the past 2 years. Nobody's ever complained about lack of output. 😉
In terms of size, the physical construction of the room, placement within it and furnishings are in many ways more significant than the bald dimensions; partition walls for e.g. leach LF energy, placement of furnishings affects diffraction & farfield response etc. so the reason there are a lot of opinions is that there isn't really a fixed answer, as Dave indicates.
In terms of size, the physical construction of the room, placement within it and furnishings are in many ways more significant than the bald dimensions; partition walls for e.g. leach LF energy, placement of furnishings affects diffraction & farfield response etc. so the reason there are a lot of opinions is that there isn't really a fixed answer, as Dave indicates.
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That’s quite a compliment from Mark!
Does anybody have thoughts on the use of a super tweeter with XL? I’ve seen pictures of them attached, but some people say bad idea.
Does anybody have thoughts on the use of a super tweeter with XL? I’ve seen pictures of them attached, but some people say bad idea.
Yes: YMMV. 😉 This is more or less a question of personal preference, so unfortunately there's only one way to know for sure. In some cases, for some people, with some implementations, they suit their needs. In others -they don't.
Re super tweeters:
I can’t say for sure if they are bad or good. I can say it is only money, and I don’t believe adding them will damage anything. Just my uneducated opinion. Nice thing is that they could be added at anytime.
I can’t say for sure if they are bad or good. I can say it is only money, and I don’t believe adding them will damage anything. Just my uneducated opinion. Nice thing is that they could be added at anytime.
Adding a superTweeter is a mixed bag, as Scott indicates. It adds some sparkle up top which may add to your experience, but it is going to always be the case that the driver centre-to-centre is many, many wavelengths at the XO so you get a whole lot of comb filtering which, depending on where your head is, means lots of ripples in the FR.
Only you can decide if it works for you. We found that in our early FR work, adding a tweeter to the RS 40-1197 mules worked, particularily w small cone tweeters — the FR response starts to fall at about 10k, but i have also heard a superTweeter completely ruin a loudspeaker.
dave
Only you can decide if it works for you. We found that in our early FR work, adding a tweeter to the RS 40-1197 mules worked, particularily w small cone tweeters — the FR response starts to fall at about 10k, but i have also heard a superTweeter completely ruin a loudspeaker.
dave
The audibility of comb filtering is questionable, particularly when listening to stereo speakers with two ears in a room
As i said, Toole showed that it mattered much less to the ear/brain than it looks in the graph, but i find that one gets some HF smear/hash. Each listener must make their own determination.
dave