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Old 9th August 2009, 10:09 PM   #1
Defo is offline Defo  Norway
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Question Hi efficiency 8 inch midrange - recommendations?

- Max 200 usd a piece
- 200 - 2500 khz

Any recommendations?
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Old 9th August 2009, 10:29 PM   #2
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Fostex FF225K (119,00 ) is one of the best , low power dought at 30W(/100W) 96dB. More Hi-fi than PA.

Volt Ps8/151 bass-midrange 150W 96dB PA range
Volt BM220.8 bass 150W 88dB studio range

Precision Devices PD.8BM20 200W 92dB Mid range

SEAS CA22RNY (H1471) 90W 91dB

Beyma 8G40 250W 95dB
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Old 10th August 2009, 01:28 AM   #3
ScottG is offline ScottG  United States
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http://www.parts-express.com/pdf/294-652.pdf
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Old 10th August 2009, 01:55 AM   #4
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Might wanna consider beaming at the upper end with an 8" driver unless directivity is the goal. Even 6.5" is pushing it IMO. A pair of 5" drivers might be better suited to the task....depending on what the task is. B&C has a great 6.5" Pro mid with 95db sensitivity that would work in the FR range you specified and it's only $70 with pretty low HD and very high power handling.

http://zaphaudio.com/6.5test/compare.html
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Old 10th August 2009, 02:02 AM   #5
tinitus is offline tinitus  Europe
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Quote:
Originally posted by mayhem13

A pair of 5" drivers might be better suited to the task....depending on what the task is.

But double mids may have lobing issues, if crossed high

With high efficient drivers you could choose a midwoofer, but it wont do he highs
Or you could choose a mid, but it wont do the lows

I dont know why, but Beta-8A seem to cut it where all other fails if company specs are to be trusted
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Old 10th August 2009, 08:52 AM   #6
Defo is offline Defo  Norway
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Quote:
Originally posted by mayhem13
Might wanna consider beaming at the upper end with an 8" driver unless directivity is the goal. Even 6.5" is pushing it IMO. A pair of 5" drivers might be better suited to the task....depending on what the task is. B&C has a great 6.5" Pro mid with 95db sensitivity that would work in the FR range you specified and it's only $70 with pretty low HD and very high power handling.

http://zaphaudio.com/6.5test/compare.html
Directivity is a goal yes. Ill be using a 80 degree horn, so it will be crossed around 1900 hz.

That B&C seems interesting! Good sensitivity and smooth rolloff.
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Old 10th August 2009, 10:16 AM   #7
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Default Re: Hi efficiency 8 inch midrange - recommendations?

Quote:
Originally posted by Defo

- 200 - 2500 khz

Any recommendations?

Quote:
Originally posted by Defo

That B&C seems interesting! Good sensitivity and smooth rolloff.
That's not good because of Fs (is) too close, (that) you don't want. Response looks +/- good at 200Hz. It doesn't have a smooth rolloff with a peack of ~8dB at 5kHz.
http://www.parts-express.com/pdf/294-651.pdf
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Old 10th August 2009, 10:18 AM   #8
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18Sound 8NMB420
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Old 10th August 2009, 10:43 AM   #9
Defo is offline Defo  Norway
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Default Re: Re: Hi efficiency 8 inch midrange - recommendations?

Quote:
Originally posted by Inductor

That's not good because of Fs (is) too close, (that) you don't want.
Could you elaborate a bit? I thought the only problem with running a driver below fs is that its gonna have a hard time getting any output.

Quote:
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This one seems tempting. Is it as good as the B&C I wonder?
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Old 10th August 2009, 11:46 AM   #10
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The peak at 5khz is negligable, and a fair tradeoff for what you get otherwise. Given an LR4 at 2.5khz you'd never be able to isolate it during listening.

There's plenty of great 6.5" mids in the Pro audio world but if efficiency isn't the goal i'd go 5". The SEAS MCA15RCY is an exceptional mid driver

Why not cross it higher to the woofer, say 400hz or so. If the design is high efficiency, there's plenty of Pro woofers that can do 400hz in their sleep.
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