12 bucks in the US:
An externally hosted image should be here but it was not working when we last tested it.
Yes, that's the phenolic ring tweeter, isn't it? Phenolic because the brown surround is phenol plastic. I think Advent used to make woofers like this.
It's the weapon of choice for repairing AR speakers. IMO, cone tweeters work best with a third order filter, which is a step up from the old first orders most people used.
I messed around with my 8" speakers today:
I had a 7.5R + 0.68uF Zobel on the SEAS metal tweeter, but I think it sounded too polite. It's better now. Very involving speaker and easy impedance. No nasty breakups at all. This circuit will work with almost ANY well-behaved 8" woofer IMO.
It's the weapon of choice for repairing AR speakers. IMO, cone tweeters work best with a third order filter, which is a step up from the old first orders most people used.
I messed around with my 8" speakers today:
I had a 7.5R + 0.68uF Zobel on the SEAS metal tweeter, but I think it sounded too polite. It's better now. Very involving speaker and easy impedance. No nasty breakups at all. This circuit will work with almost ANY well-behaved 8" woofer IMO.
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That's a decent curve Steve. I read some articles and threads on BW3 and people seem to have favourable experiences with it. However, one has to distinguish between electrical and acoustical slopes, and consider drivers' roll off. Sometimes, an asymmetrical XO works wonders.
On average, a passive BW3 means an increase in component costs.
Indeed, it's a no label phenolic ring tweeter as "drop in replacement" for vintage Marantz, Advent etc.
On average, a passive BW3 means an increase in component costs.
Indeed, it's a no label phenolic ring tweeter as "drop in replacement" for vintage Marantz, Advent etc.
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Those Advent woofers had masonite rings to adapt roughly 10" cones to 12" frames. Same colour as phenolic. HK's way to put a large motor with a smaller cone. Remember this is the same guy who had only those parts of the baffle painted that might show through the grill cloth. Not a speaker-porn guy, Henry Kloss.
By the way, those phenolic tweeters are a good match for many old speakers that actually had phenolic tweeters, though there is a large spike at the bottom of it's range which not all old crossovers are set up to deal with. Other than that spike(which the ARs had), however, it is not a replacement for an AR4x. I have here an AR4x tweeter which has come apart. I'll photograph an autopsy sometime, but it is an almost 3" cone, rather than the 3/4-1" cone in the phenolics. It's very weird. There is light cotton-like fuzz betwixt cone and backing plate,fiberglass in the dustcap, and some funny silicone-like gel(not sticky,but soft)on top of the pole piece. I am waiting for the second of a pair of 4xs and hopefully the other tweeter is intact, and can be tested.
I do remember(through the haze of two-score plus years) that the AR4xs sounded more balanced at very high levels than at moderate ones. Never blew up a tweeter, though. A good first speaker for many of us back then.
By the way, those phenolic tweeters are a good match for many old speakers that actually had phenolic tweeters, though there is a large spike at the bottom of it's range which not all old crossovers are set up to deal with. Other than that spike(which the ARs had), however, it is not a replacement for an AR4x. I have here an AR4x tweeter which has come apart. I'll photograph an autopsy sometime, but it is an almost 3" cone, rather than the 3/4-1" cone in the phenolics. It's very weird. There is light cotton-like fuzz betwixt cone and backing plate,fiberglass in the dustcap, and some funny silicone-like gel(not sticky,but soft)on top of the pole piece. I am waiting for the second of a pair of 4xs and hopefully the other tweeter is intact, and can be tested.
I do remember(through the haze of two-score plus years) that the AR4xs sounded more balanced at very high levels than at moderate ones. Never blew up a tweeter, though. A good first speaker for many of us back then.
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Yup -that little "fried egg" phenolic was seen in dozens of models of large mainstream and smaller local players in the 70-80s.
The 'fried egg' is more like a wide surround/small cone. Look at old Advents. Not the same as the phenolic ring jobs(which were common).
The original Advent, and Winslow Burhoe's Energy 22 (dual hyperdome) tweeter were quite special indeed.
had the Kiis for about 3 months now. Hopefully will get the D&D very soon to compare.
HaHa, diyaudio strikes again! 😀
Remember this splendid design by marco_gea?
Dat liddle 10 euro Monacor HT22-8 tweeter and a PA bass?
Tony Gee has now done a take on it too:
Humble Homemade Hifi - Twenty Five
Cheap as chips and very good. He has added a little notch for the breakup. Nice. 😎
Remember this splendid design by marco_gea?
Dat liddle 10 euro Monacor HT22-8 tweeter and a PA bass?
Tony Gee has now done a take on it too:
Humble Homemade Hifi - Twenty Five
Cheap as chips and very good. He has added a little notch for the breakup. Nice. 😎
On the other end of the spectrum we now have this tweeter, available with both AluMag and Beryllium Dome.
Voice Coil Test Bench
Troels' review.
Voice Coil Test Bench
Troels' review.
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I am actually planning to buy a portable monitor. I found some reviews here Best portable monitors 2018 | 17 Best USB Portable Monitor but I am biased. Are they reliable? I have my heart on HP Pavilion but I am looking for other opinions.
This one is actually pretty decent. Wanna make it portable? Just detach the stand 😉
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This is not exactly the monitors this thread is about 🙂
but I can recommend looking at
Monitor Reviews | PC Monitors
but I can recommend looking at
Monitor Reviews | PC Monitors
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I made a new version of the Arkadia with this woofer :
H1659-08 U22REX/P-SL
This is the tweeter :
H1499-06 27TBCD/GB-DXT
Any more info on this design?
H1659-08 U22REX/P-SL
This is the tweeter :
H1499-06 27TBCD/GB-DXT
Any more info on this design?
That seems better to me for many reasons (including efficiency) and anyway much cheaper than this: