Aleph-P problem ??

peter7 · 10th July 2005, 05:56 PM

Hello, I finished the aleph-P today ,but I use the headphone to test it, the sound is small (P1=150R , gain=+14dB),is it only my problem or yours Aleph-P is also like that ??

Nelson Pass · 10th July 2005, 06:25 PM

That is a typical gain figure for the Aleph P, but what is
the impedance of your headphones?

peter7 · 11th July 2005, 02:29 AM

Hello Nelson, I don't know the impedance of my headphones, but the sound are normal when I using in the other preamp & portable cd player .

peter7 · 11th July 2005, 03:10 AM

WOW!! Nelson , when I connecting to my Aleph 5 , the sound is details (already working 2 hrs) !! before I using Boz & tubes preamp , Aleph-P can play magic!! balance is balance , (3 hrs are coming) I can't stop the Aleph-P.

Help me ~~~~Nelson~~!!!!!!

Thank you Nelson & Adam!!

Nelson Pass · 11th July 2005, 03:22 AM

Headphone impedances occur over a wide range depending on
which one it is, but a lot of them are down around 30 ohms or
so, in which case the output impedance of the preamp will
be attenuated. There are cures for this, but the first step is
knowing what the impedance of your headphones is and
whether they share a common ground.

acaudio · 11th July 2005, 08:28 PM

Quote:

Originally posted by peter7
WOW!! Nelson , when I connecting to my Aleph 5 , the sound is details (already working 2 hrs) !! before I using Boz & tubes preamp , Aleph-P can play magic!! balance is balance , (3 hrs are coming) I can't stop the Aleph-P.

Help me ~~~~Nelson~~!!!!!!

Thank you Nelson & Adam!!

Happy listening Peter!

Adam

peter7 · 12th July 2005, 02:34 AM

Thank you Adam!!

Peter

10th July 2005, 05:56 PM	#1
peter7 diyAudio Member Join Date: Apr 2005 Location: hong kong	Aleph-P problem ?? Hello, I finished the aleph-P today ,but I use the headphone to test it, the sound is small (P1=150R , gain=+14dB),is it only my problem or yours Aleph-P is also like that ??

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
problem with R44 on Aleph P 1.7	Stefanoo	Pass Labs	15	9th October 2007 12:57 PM
Problem with aleph p 1.7	gabflo	Pass Labs	7	2nd September 2006 05:50 PM
Problem with Aleph 2	ppesa	Pass Labs	1	31st January 2006 07:44 PM
Aleph 2 problem!Help...	nar	Pass Labs	14	1st June 2003 03:42 PM
Aleph 5 PSU problem please help?	xsnailx	Pass Labs	10	4th March 2003 06:28 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

10th July 2005, 06:25 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	That is a typical gain figure for the Aleph P, but what is the impedance of your headphones?

11th July 2005, 02:29 AM	#3
peter7 diyAudio Member Join Date: Apr 2005 Location: hong kong	Hello Nelson, I don't know the impedance of my headphones, but the sound are normal when I using in the other preamp & portable cd player .

11th July 2005, 03:10 AM	#4
peter7 diyAudio Member Join Date: Apr 2005 Location: hong kong	WOW!! Nelson , when I connecting to my Aleph 5 , the sound is details (already working 2 hrs) !! before I using Boz & tubes preamp , Aleph-P can play magic!! balance is balance , (3 hrs are coming) I can't stop the Aleph-P. Help me ~~~~Nelson~~!!!!!! Thank you Nelson & Adam!!

11th July 2005, 03:22 AM	#5
Nelson Pass The one and only Join Date: Mar 2001	Headphone impedances occur over a wide range depending on which one it is, but a lot of them are down around 30 ohms or so, in which case the output impedance of the preamp will be attenuated. There are cures for this, but the first step is knowing what the impedance of your headphones is and whether they share a common ground.

12th July 2005, 02:34 AM	#7
peter7 diyAudio Member Join Date: Apr 2005 Location: hong kong	Thank you Adam!! Peter

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)