Peerless 830845 in Sealed Enclosure - screenshots included - diyAudio
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Old 12th March 2008, 03:02 PM   #1
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Default Peerless 830845 in Sealed Enclosure - screenshots included

I've been doing some modelling with unibox using a Peerless XXLS 12" 830845.

40L - 20hz @ 99.5dB
60L - 20hz @ 102dB
80L- 20hz @ 103dB

Using 500Watts input via a Redgum Plate Amplifier

40L
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60L
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80L
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From the specs it should be to bad at home theatre and/or music, what you guys think?
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Old 12th March 2008, 03:32 PM   #2
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What is Xmax on this driver? If it's 13mm it looks like you are overdriving it.

Are you prepared to use any EQ? That can add a new slant on box size (smaller) if the voicecoil thermal capacity is big enough and you have enough power.
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Old 12th March 2008, 03:33 PM   #3
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Hi,

Its 12.5 xmax.... I was just lookng at the pics and thinking the same thing!!

Silly me!

Really only needs 40L with 250Watts to hit xmas which is about 95db at 20hz
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Old 12th March 2008, 03:47 PM   #4
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What you think?

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Old 12th March 2008, 04:13 PM   #5
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Looks OK to me. You could increase box size a bit more (say 60 litres) and get a bit lower without needing any EQ, and have a bit smoother response and need less power. But as it is it's not bad performance from a sealed 40 litre cab.
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Old 12th March 2008, 04:17 PM   #6
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Old 13th March 2008, 01:26 AM   #7
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Hows this one look:

Click the image to open in full size.

Comparing it to a subwoofer I was looking to purchase.

Velodyne SPL-1500R @ $3000
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Velodyne DD14 @ $5000
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Pound for pound it looks the same to me or am I missing something?????
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Old 14th March 2008, 12:09 PM   #8
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Well the frequency response may be similar, but you haven't compared phase, SPL capability or any dynamic attributes.
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Old 6th April 2008, 11:09 PM   #9
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G'day Nick

You've been asking quite a few questions about the Peerless XXLS drivers here lately. Drop me a mail and you can have a listen to mine.

Have a look at http://www.cowanaudio.com

Cheers

William Cowan
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