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Crown xti 2 noise?
Crown xti 2 noise?
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Old 20th December 2017, 06:48 PM   #1
oLjud is offline oLjud  Sweden
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Default Crown xti 2 noise?

Hi,
Im looking to buy a new amp with built in dsp/xover and found Crown Xti. The plan is to use the amp for a BMS 4550 CD w/ horn, sensitivity about 110 dB. Will there be a noise floor issue if used in home environment?

The amp has a stated:
s/n 100 dBA
Voltage gain 30.5 dB or 32.9 (depending of model)
max input signal +22 dBu

I'll probably need to lower the sensitivity to match the B&C 15tbx100 (97 dB)...

thanks in advance!

let me know if the thread should be moved!

Best regards
Mikael
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Old 20th December 2017, 07:05 PM   #2
conanski is offline conanski  Canada
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Yes you will have a 10-15dB level adjustment to make depending upon EQ and that will help a lot, but be sure to also use balanced interconnects to the amp as well.
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Old 21st December 2017, 05:24 AM   #3
oLjud is offline oLjud  Sweden
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My preamp only have unbalanced outputs, will a rca-XLR be as good?

Tried minidsp 2x8HD and Anaview amp-modules but never got it noise free.
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Old 22nd December 2017, 02:01 AM   #4
conanski is offline conanski  Canada
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You need something to convert those unbalanced outputs to balanced.
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Old 22nd December 2017, 05:09 AM   #5
oLjud is offline oLjud  Sweden
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Thanks!
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Old 22nd December 2017, 09:00 PM   #6
GeorgK is offline GeorgK  Austria
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Quote:
Originally Posted by conanski View Post
You need something to convert those unbalanced outputs to balanced.
If you do not need long cable from the processor to the power amp I would leave the connections unbalanced. If there is no danger for hum pickup or ground loops I consider this unnecessary.
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Old 25th December 2017, 03:55 PM   #7
oLjud is offline oLjud  Sweden
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The cables will be max 1 m long, probably shorter.
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Old 25th December 2017, 04:41 PM   #8
rdf is offline rdf  Canada
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Quote:
Originally Posted by oLjud View Post
The amp has a stated:
s/n 100 dBA
That's at rated power using a forgiving weighting curve. The lowest power model is 250 (or more?) watts per channel into 8 ohms. Best guess is the noise into the room will be at least in the high/mid 30 decibels at one meter, likely more depending contribution of source electronics, tweeter frequency response and how generous A-weighting is towards that 100 dB S/N figure.
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Last edited by rdf; 25th December 2017 at 04:52 PM. Reason: accuracy
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Old 25th December 2017, 08:58 PM   #9
GeorgK is offline GeorgK  Austria
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Quote:
Originally Posted by oLjud View Post
The cables will be max 1 m long, probably shorter.
If so, I would not bother using balanced connections.
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Old 26th December 2017, 01:57 AM   #10
conanski is offline conanski  Canada
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If he wants the lowest noise floor possible he needs a real balanced interconnect system.
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