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4x v1000 and proline 3000

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concept-10 View Drop Down
Young Croc
Young Croc


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Post Options Post Options   Thanks (0) Thanks(0)   Quote concept-10 Quote  Post ReplyReply Direct Link To This Post Posted: 14 December 2018 at 2:29pm
[QUOTE=Dub Specialist Sound]Pretty sure them ohm amps are Chinese too arnt tha? [/QUOTE
Yes bud but made for OHM who have reputation to consider so should be good amps.
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levyte357- View Drop Down
Old Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 14 December 2018 at 4:12pm
Originally posted by concept-10 concept-10 wrote:

Originally posted by Dub Specialist Sound Dub Specialist Sound wrote:

Pretty sure them ohm amps are Chinese too arnt tha?
Yes bud but made for OHM who have reputation to consider so should be good amps.


Think you'll find they were not made for Ohm, but just rebranded Soundstandard amps, just like the Darq series.

UK has a long history of importing cheap chinese gear, rebranding it, and selling it for 4x times original price.

While others here cry foul of Chinese products..


"Gentlemen, you can't fight in here, this is the war room!!".
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toastyghost View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 14 December 2018 at 4:23pm
Originally posted by king david king david wrote:

Originally posted by toastyghost toastyghost wrote:

Define ‘good limiting’ for me?

Did the user actually measure the RMS voltage or current required to cause heat buildup in the magnet or coil of the driver once in the box and set the limiter to that value? Or did they just take the AES rating and stick it in a calculator?



Cant remember how the limiter was set, but the amp was kept below clip.

The people who do like you suggest most probably use other amps. Cant see proline amps in professional rigs


Below clip is still capable of being way too much RMS power for even the beefiest 21” coil when the power supply can deliver the current continuously.

Coil heating can occur at approx 400W long term power for day a B&C 18SW115 in a tapped horn where forced air cooling is BETTER than a folded horn or scoop, let alone a box with lower airflow. Part of this is proper filter design as well, so is ensuring cone movement and impedance is balanced between sound quality and efficiency (low excursion) and cooling (high excursion) especially based on the intended source material and crest factor of the music.

RMS limit for many dual 18” folded horns where the driver magnet sits in the horn path can be as low as 50v.

This is not a myth and is well documented by the driver manufacturers own Klippel data.

Edited by toastyghost - 14 December 2018 at 4:25pm
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concept-10 View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote concept-10 Quote  Post ReplyReply Direct Link To This Post Posted: 14 December 2018 at 4:23pm
I fully appreciate that lev, my point was OHM don't tend to put their name on shite so they could be good, no Chinese hating here, life would be shockingly expensive without them Smile
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