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Multi-Way Conventional loudspeakers with crossovers

Some speaker driver measurements...
Some speaker driver measurements...
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Old 7th November 2019, 02:40 AM   #471
ScottG is offline ScottG  United States
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Location: US
Quote:
Originally Posted by nailhead View Post
Why don't you write "at 94dB (SPL)" like any one else does? Do you want to confuse people?

Want to be special?
I don't know about that..


-but he doesn't have to "want" to be special: in this hobby/industry - he is special.
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Old 7th November 2019, 02:48 AM   #472
Oneminde is offline Oneminde  Sweden
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Location: Darkside of the moon.
The SEAS 27TAC has improved the off axis response, but the 25kHz breakup is nightmare fuel. Its among the worst I've seen for a "premium" tweeter, also the moving mass of 0.36 grams is also much higher than some of its competitors.

Quote:
It supposedly is simply an improved 27TBFC. Copper cap where there was not one before, titanium (Titan line) voice coil former, a reshaped and carefully damped chamber, as well as being shipped/sold in matched pairs. I'll admit, the $91 price tag seems a bit high for production with a glass-reinforced plastic faceplate, but truth is you don't find titanium formers in very many drivers that cost less than $100. Normally they are aluminum, glass fiber, or Kapton. Seas uses a Corian material in their diamond line tweeters, so maybe they don't use metal faces often either. (I see Excel units are cast faces) The faceplate is really thick when it comes down to having plastic faces of any sort, along with what appears to be a metal hexagrid. The chamber cup and integrated divot remind me of those in the DX/XT line from Peerless, basically a sinusoidal curve of Pi length rotated around the Y axis. It's not quite a half-torus shape. Being that the TBFC is a bit splashy, and these have a copper cap to reduce HD, that is what tickled my fancy. More on the tweeter choice will come when I start posting info about the design path.

New Seas 27TAC/GB, some facts, some opinions, and some data... — MAC/DIY
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Old 10th November 2019, 04:14 AM   #473
454Casull is offline 454Casull  Canada
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Didn't the D2004/602000 have off-axis measurements posted before?

ScanSpeak D2004/602000 | HiFiCompass
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Old 11th November 2019, 10:18 AM   #474
HiFiCompass is offline HiFiCompass  Ukraine
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Quote:
Originally Posted by 454Casull View Post
Didn't the D2004/602000 have off-axis measurements posted before?

ScanSpeak D2004/602000 | HiFiCompass
No, didn't
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Old 11th November 2019, 10:46 AM   #475
Pida is offline Pida  Czech Republic
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D2004-6020 horizontal responses 0-90deg, with 10deg steps attached. Measured in NE3W enclosure, 1m, gating ~4ms.
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File Type: png D2004%20H.png (56.6 KB, 355 views)
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Old 14th November 2019, 05:49 PM   #476
HiFiCompass is offline HiFiCompass  Ukraine
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A review of the first PURIFI PTT6.5W04-01A midwoofer:

PURIFI PTT6.5W04-01A midwoofer review | HiFiCompass
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Old 14th November 2019, 06:01 PM   #477
Martigane is offline Martigane  Belgium
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I looked at the surround and laughed thinking this would be crap.
Then I looked at the measurement and stopped laughing.
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Old 14th November 2019, 06:10 PM   #478
Oneminde is offline Oneminde  Sweden
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Location: Darkside of the moon.
On standby for the Bliesma T25 series subjective review and I've got to read the article about the Purifi woofer
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Old 14th November 2019, 06:14 PM   #479
HiFiCompass is offline HiFiCompass  Ukraine
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Quote:
Originally Posted by Oneminde View Post
On standby for the Bliesma T25 series subjective review and I've got to read the article about the Purifi woofer
Yes, I rememberSome speaker driver measurements...
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Old 14th November 2019, 08:58 PM   #480
briskly is offline briskly  United States
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Quote:
100 W (noise) and 350 W(!) (IEC)
Is 350W the IEC "long-term" power rating?
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