Output level SE IVY III - Output level SE IVY III Options  Watch this topic  Print this topic  Atom Feed  RSS Feed View » Normal Threaded

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Giuseppe		#1 Posted : Sunday, August 3, 2014 9:06:27 AM(UTC)
Rank: Member Groups: Member Joined: 5/28/2014(UTC) Posts: 24 Location: Foggia		Hello friends, I have a buffalo IIISE with IVY III, connected directly to the amplifier (without preamp). I use only output SE and I need to increase the output level to 4V. I do not use balanced output. What are resistors to be replaced for my configuration? Is correct R13-16 or R21-24?
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avr300		#2 Posted : Sunday, August 3, 2014 9:15:17 AM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		Increasing R21-R24 is the way to go.
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Giuseppe		#3 Posted : Sunday, August 3, 2014 9:31:57 AM(UTC)
Rank: Member Groups: Member Joined: 5/28/2014(UTC) Posts: 24 Location: Foggia		I have to double the value, right? from 2k2 to 4K4?
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Giuseppe		#4 Posted : Sunday, August 3, 2014 9:39:51 AM(UTC)
Rank: Member Groups: Member Joined: 5/28/2014(UTC) Posts: 24 Location: Foggia		Curiosity: R13-16 increases the output level balanced and SE?
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avr300		#5 Posted : Sunday, August 3, 2014 9:53:21 AM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		Originally Posted by: Giuseppe I have to double the value, right? from 2k2 to 4K4? Yes.
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avr300		#6 Posted : Sunday, August 3, 2014 11:16:46 AM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		My question to you - why do you need 4v on SE output ?
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Giuseppe		#7 Posted : Sunday, August 3, 2014 4:35:57 PM(UTC)
Rank: Member Groups: Member Joined: 5/28/2014(UTC) Posts: 24 Location: Foggia		The volume control in the DAC buffalo IIISE (potentiometer 5K) is almost to the maximum with the amplifier Sugden au51 (without preamplifier). In this configuration, the amplifier does not release the full power! What do you recommend?
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avr300		#8 Posted : Sunday, August 3, 2014 6:03:27 PM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		First of all. What's the source ? Is there some kind of attenuation at the source ? If this is the power amp: http://www.imaginhome.com/download/dossier_presse/Ampli_classe%20A_SUGDEN.pdf (scroll down to page 12) then it says: Input Sensitivity for Max Out : 750mV
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Giuseppe		#9 Posted : Sunday, August 3, 2014 6:29:43 PM(UTC)
Rank: Member Groups: Member Joined: 5/28/2014(UTC) Posts: 24 Location: Foggia		Yes, it is my amplifier. the source is usb waveio connected i2s. the player is foobar with the output to the maximum.
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avr300		#10 Posted : Sunday, August 3, 2014 6:38:03 PM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		Look at the corresponding preamp (same page). It says Output : 1 volt (15 max) (don't know what 15 max means, don't care about it) You don't need 4v Are you absolute sure about the output in foobar? Can you do a check with another source? Edited by user Sunday, August 3, 2014 6:39:57 PM(UTC)  | Reason: Not specified
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Giuseppe		#11 Posted : Sunday, August 3, 2014 7:35:05 PM(UTC)
Rank: Member Groups: Member Joined: 5/28/2014(UTC) Posts: 24 Location: Foggia		Tried it with another amplifier and the level volume is ok. I think the Sugden amplifier is more 750 mV ! I also tried to connect the preamplifier Sugden with the dac and the volume of the preamplifier is ok. The preamplifier is more of 1 volt! Another question: I also bought Legato I / V and i have yet to assemble. It is better to use the output buffer SE in my configuration or not buffer? what do you recommend?
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avr300		#12 Posted : Tuesday, August 5, 2014 6:12:54 PM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		In my opinion always use the Legato buffer. As I'm typing, it's playing nice here.
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avr300		#13 Posted : Tuesday, August 5, 2014 6:14:53 PM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		Originally Posted by: Giuseppe Tried it with another amplifier and the level volume is ok. I think the Sugden amplifier is more 750 mV ! I also tried to connect the preamplifier Sugden with the dac and the volume of the preamplifier is ok. The preamplifier is more of 1 volt! Then you have to use a scope to measure the levels.
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Giuseppe		#14 Posted : Tuesday, August 5, 2014 6:45:41 PM(UTC)
Rank: Member Groups: Member Joined: 5/28/2014(UTC) Posts: 24 Location: Foggia		thanks for your tips. the manual IVY III talk 2V output. it refers to the outputs voltage balanced or SE? to me the voltage on the outputs SE seems less 2 volts! what is voltage outputs SE?
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