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weinstro · 15th October 2007, 08:46 PM

Hi All,

For my paper tiger, I'm having some difficulty picking between the Seas T25CF001, 27TDFC, and Peerless 810921. All appear to be fine, low distortion tweeters.

When might you pick the T25CF001 over the others? How about the 810921?

My paper tiger is an MTM with 5" mid-bass drivers. I will need a low-ish crossover frequency.

Thanks for your insights!

badman · 16th October 2007, 12:18 AM

I use the peerless in a 3 way , practically as a supertweeter. No complaints here, sounds fantastic.

Jay_WJ · 16th October 2007, 12:42 AM

I was basically in the same situation when I looked for a tweeter for my Usher 8945P 2-way design. I needed one that has the lowest possible distortions down to 1 kHz because I wanted to cross it at 1.5 kHz. Also looked for one under $100.

My choice was the Peerless 810921. But I would've chosen one of the following and be happy with the result:

- Dayton RS28A-4 (Zaph's tested sample was from the problematic initial production batch; since then the problem was corrected)
- Seas 27TBFC/G
- Seas 27TDFC

I'd not look at the T25CF001. It's an old design and has been discontinued (maybe some are left at Madisound). Zaph tested it and found that distortion performance was not as good as the Seas Prestige below 2 kHz.

fpara · 16th October 2007, 01:12 AM

I'd go 810921 as well

banana · 16th October 2007, 10:01 AM

Wouldn't 27TDC better than 27TDFC??

27TDFC appears to have higher distortion around 5~7KHz, both from Zaph's and Mark's test. Though I don't know how bad this distortion will affect the sound.

Jay_WJ · 16th October 2007, 01:57 PM

Quote:

Originally posted by banana
Wouldn't 27TDC better than 27TDFC??

27TDFC appears to have higher distortion around 5~7KHz, both from Zaph's and Mark's test. Though I don't know how bad this distortion will affect the sound.

Just looked at Mark's test. It won't affect the sound since it's above 20 kHz.

sreten · 16th October 2007, 04:29 PM

Quote:

Originally posted by weinstro

My paper tiger is an MTM with 5" mid-bass drivers. I will need a low-ish crossover frequency.

the best tweeter will be the one with the best crossover,

http://www.eldamar.net/audio/RS150MTM/

/sreten.

weinstro · 19th October 2007, 06:28 AM

Thanks for the advice. I was concerned that the 810921 couldn't crossover particularly low.

nicoch58 · 19th October 2007, 09:29 AM

HI

yes the xover sinergy whit woofer ,ie phase,ecc... make the difference

15th October 2007, 08:46 PM	#1
weinstro diyAudio Member Join Date: May 2003 Location: California	Tweet, tweet! Hi All, For my paper tiger, I'm having some difficulty picking between the Seas T25CF001, 27TDFC, and Peerless 810921. All appear to be fine, low distortion tweeters. When might you pick the T25CF001 over the others? How about the 810921? My paper tiger is an MTM with 5" mid-bass drivers. I will need a low-ish crossover frequency. Thanks for your insights!

16th October 2007, 12:18 AM	#2
badman Custom Title diyAudio Member Join Date: Sep 2003 Location: Sunny Tustin, SoCal	Not too relevant but I use the peerless in a 3 way , practically as a supertweeter. No complaints here, sounds fantastic. __________________ I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!

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16th October 2007, 12:42 AM	#3
Jay_WJ diyAudio Member Join Date: Mar 2006 Location: Indiana	I was basically in the same situation when I looked for a tweeter for my Usher 8945P 2-way design. I needed one that has the lowest possible distortions down to 1 kHz because I wanted to cross it at 1.5 kHz. Also looked for one under $100. My choice was the Peerless 810921. But I would've chosen one of the following and be happy with the result: - Dayton RS28A-4 (Zaph's tested sample was from the problematic initial production batch; since then the problem was corrected) - Seas 27TBFC/G - Seas 27TDFC I'd not look at the T25CF001. It's an old design and has been discontinued (maybe some are left at Madisound). Zaph tested it and found that distortion performance was not as good as the Seas Prestige below 2 kHz.

16th October 2007, 01:12 AM	#4
fpara diyAudio Member Join Date: Nov 2005	I'd go 810921 as well

16th October 2007, 10:01 AM	#5
banana diyAudio Member Join Date: Feb 2003 Location: Hong Kong	Wouldn't 27TDC better than 27TDFC?? 27TDFC appears to have higher distortion around 5~7KHz, both from Zaph's and Mark's test. Though I don't know how bad this distortion will affect the sound.

19th October 2007, 06:28 AM	#8
weinstro diyAudio Member Join Date: May 2003 Location: California	Thanks for the advice. I was concerned that the 810921 couldn't crossover particularly low.

19th October 2007, 09:29 AM	#9
nicoch58 diyAudio Member Join Date: Oct 2004	HI yes the xover sinergy whit woofer ,ie phase,ecc... make the difference

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