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Trouble pushing Sennheiser HD 650 with a Graham Slee Novo Amp. - Page 2

post #16 of 31
1/17/12 at 6:35pm
Thread Starter 

Try using this? What is this?

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post #17 of 31
1/17/12 at 6:36pm
Thread Starter 

Where is the stereo output located?

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post #18 of 31
1/17/12 at 6:37pm

Sorry, I bolded a sentence in the quote.  Try using the stereo out and not the headphone jack.
 

Quote:
Originally Posted by Androktasiai View Post

Try using this? What is this?



 

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post #19 of 31
1/17/12 at 6:48pm
Thread Starter 

There isnt really a stereo out, its more of a series of mini outputs on the back....not real RCA outputs.

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post #20 of 31
1/17/12 at 6:50pm

As long as it's not an amplified headphone signal, and a true line out signal, it will work much better.
 

Quote:
Originally Posted by Androktasiai View Post

There isnt really a stereo out, its more of a series of mini outputs on the back....not real RCA outputs.



 

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post #21 of 31
1/17/12 at 6:56pm
Thread Starter 

I tried hooking up the amp to the back mini output on the computer, and there is no difference in sound or volume level.

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post #22 of 31
1/17/12 at 6:57pm

Well, I'm stumped.  The Senns are easy to drive, despite of their impedance ratings.  They should be louder than they are for you.  I wish I knew more to help.
 

Quote:
Originally Posted by Androktasiai View Post

I tried hooking up the amp to the back mini output on the computer, and there is no difference in sound or volume level.



 

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post #23 of 31
1/17/12 at 6:59pm
Thread Starter 

I'm probably annoying you by this point, thanks for your help. 

 

I can't seem to figure out why these are so hard to drive.

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post #24 of 31
1/17/12 at 7:00pm

Not at all.  I wish we could figure it out.
 

Quote:
Originally Posted by Androktasiai View Post

I'm probably annoying you by this point, thanks for your help. 

 

I can't seem to figure out why these are so hard to drive.



 

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post #25 of 31
1/17/12 at 9:43pm

Have you tried another source, besides the computer?   Try connecting an iPod or similar to the Graham and see how that works.   If no change, try the Sennheisers directly to iPod.   Better yet, if you have a CD player with headphones out, try that.   Also, take a different pair of headphones and connect them to the Graham.  How do they sound?   You basically want to swap each component and cable out of the system until you find the problem.   I would be surprised if it's the hd650s unless there's a cable problem.  Hope you find the problem.

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post #26 of 31
1/18/12 at 5:09am
Thread Starter 
Quote:
Originally Posted by nymarty View Post

Have you tried another source, besides the computer?   Try connecting an iPod or similar to the Graham and see how that works.   If no change, try the Sennheisers directly to iPod.   Better yet, if you have a CD player with headphones out, try that.   Also, take a different pair of headphones and connect them to the Graham.  How do they sound?   You basically want to swap each component and cable out of the system until you find the problem.   I would be surprised if it's the hd650s unless there's a cable problem.  Hope you find the problem.



 nymarty,

 

I have tried connecting my Sennheiser HD 650s directly to my Onkyo TX-SR806 which is a a very powerful receiver, and I have to turn the volume up to -10.0 dB (from reference I believe) to get to a comfortable listening level for me. The Receiver goes from -80.0 dB up to +8.0 dB, so once again this is also getting pretty close to maxing out.

 

I also have tried a pair of Alessandro/Grado Music Series Ones (MS-1is) with the Graham Slee Novo amp, and they seem fine, if I turn the volume knob on the amp up to 10-11 o'clock (slightly less than half way on the knob) with the Alessandro's that is a comfortable listening level for me.

 

I have tried running both headphones off of an iPod Touch, the Alessandro seems ok, the Sennheiser HD 650s need the volume cranked.

 

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post #27 of 31
1/18/12 at 6:07am

How does your headphone cable look?  Is it frayed or bent pretty bad in any way?

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post #28 of 31
1/18/12 at 6:27am
Thread Starter 

I just got the headphones off another user (deusofhearts) on the forums here, the cable is the stock sennheiser cable. The cable appears to be in good condition with no real signs of damage or fraying.

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post #29 of 31
1/18/12 at 6:32am

I'm sure the seller is reputable, but I just have to ask anyway.  Are you sure they are real Senns?  Not fakes?  The only reason I'm asking is because my Senns are very easy to drive.

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post #30 of 31
1/18/12 at 7:55am
Thread Starter 

Hey,

 

They came in an original Sennheiser box, with the corrugated cardboard around it. The headphones say Made in Ireland on the inside of the headband.

 

And the seller has a good rating on the forums as a seller and buyer.

 

How could I tell if they were fakes?

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