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Speaker amps for headphones - Page 122

post #1816 of 3116
Quote:
Originally Posted by brunk View Post
 

Hehe, go have that drink man, it'll "balance" you out :tongue:

 

If I take your advice and fall over, them I'm not very balanced, am I?   :confused_face_2:

post #1817 of 3116
Quote:
Originally Posted by Chris J View Post
 

 

If I take your advice and fall over, them I'm not very balanced, am I?   :confused_face_2:

I guess that means you have a lightweight CMRR :tongue:

post #1818 of 3116
Quote:
Originally Posted by Chris J View Post
 

 

... snip ...

I agree, "balanced amplifier" gets ambiguous........................kind of a useless term without some type of explanation of topology.

It drives me to drink when someone asks "is the Acme Mark IV power amp balanced from input to output?"

The answer is: yes, it's perfectly balanced front to back, i.e. it has a perfect 50:50% weight ratio.

... snip ...

I'm sorry, I find this completely contrary to my experience!  The Acme Mark IV has that big a** transformer right next to the back wall, putting the balance point about 1/3 of the way toward the back of the amp!  Very awkward picking it up from the front, you know!

 

 

 

 

 

(sorry, couldn't resist....)  ( RESISTANCE IS FUTILE!!!!)  

post #1819 of 3116
Quote:
Originally Posted by brunk View Post
 

Changing the topic slightly here....

 

I need some help in selecting a speaker switch box, so I can toggle between my speakers and HE-6. I understand many units have amp protection with resistors to keep the impedance at roughly 8 ohms if you decide to run both A and B speakers at the same time. Some have the option to disable it, which is what I want. However, I am reading that some affect sound regardless. Anyways, what is a good low-cost switch box that has defeatable protection, and separate grounds?

 

I am looking at this switch so far, but I don't really know if it has dedicated grounds or not.

http://www.outdoorspeakerdepot.com/ishipo4pasps.html

 

another option I'm looking at is the Niles SPS-4

http://www.nilesaudio.com/images/legacy/manuals/sps4man.pdf

 

However, is there a switch like these where you can also toggle between two different amplifiers? This would be really nice, so I could use my speakers/headphones from 2 different amps!

 

Thanks in advance :)

 

Wish I had a good answer for you...  I gave up looking for something COTS to switch the amp output... I'm going DIY...  

 

If you end up finding something that does a good job, it would be a very handy tool to have!

post #1820 of 3116
Quote:
Originally Posted by potterma View Post
 

I'm sorry, I find this completely contrary to my experience!  The Acme Mark IV has that big a** transformer right next to the back wall, putting the balance point about 1/3 of the way toward the back of the amp!  Very awkward picking it up from the front, you know!

 

 

 

 

 

(sorry, couldn't resist....)  ( RESISTANCE IS FUTILE!!!!)  

 

No  that was the first revision.

It was junk. It had no soundstage.

They fixed the balance in the second edition.   :rolleyes:

 

 

Important news flash!

 

Klaus from Odyssey Audio is on page 230 of the January 2014 issue of the Absolute Sound. very cool.

post #1821 of 3116
Quote:
Originally Posted by brunk View Post
 

Changing the topic slightly here....

 

I need some help in selecting a speaker switch box, so I can toggle between my speakers and HE-6. I understand many units have amp protection with resistors to keep the impedance at roughly 8 ohms if you decide to run both A and B speakers at the same time. Some have the option to disable it, which is what I want. However, I am reading that some affect sound regardless. Anyways, what is a good low-cost switch box that has defeatable protection, and separate grounds?

 

I am looking at this switch so far, but I don't really know if it has dedicated grounds or not.

http://www.outdoorspeakerdepot.com/ishipo4pasps.html

 

another option I'm looking at is the Niles SPS-4

http://www.nilesaudio.com/images/legacy/manuals/sps4man.pdf

 

However, is there a switch like these where you can also toggle between two different amplifiers? This would be really nice, so I could use my speakers/headphones from 2 different amps!

 

Thanks in advance :)

B,

Took a look at those two boxes.

For the grounding (or signal common).......hard to say as they don't really say what's in the box.

Obviously the Outdoor speaker Depot box has some kind of defeatable protection

You would really need to get the circuit diagram to be 100% sure.   Ugh.

The Niles box seems to have undefeatable protection.

 

I can't think of a switch that anyone sells that allows 2 amps to toggle between 2 pairs of speakers.


Edited by Chris J - 12/6/13 at 6:07pm
post #1822 of 3116
Quote:
Originally Posted by Chris J View Post
 

 

No  that was the first revision.

It was junk. It had no soundstage.

They fixed the balance in the second edition.   :rolleyes:

 

 

Important news flash!

 

Klaus from Odyssey Audio is on page 230 of the January 2014 issue of the Absolute Sound. very cool.

Article or ad?

post #1823 of 3116
Quote:
Originally Posted by potterma View Post
 

Article or ad?

 

I'm not too bright sometimes.

 

A one page interview with Klaus.

He loves vinyl. :tongue_smile:

post #1824 of 3116
Quote:
Originally Posted by Chris J View Post
 

B,

Took a look at those two boxes.

For the grounding (or signal common).......hard to say as they don't really say what's in the box.

Obviously the Outdoor speaker Depot box has some kind of defeatable protection

You would really need to get the circuit diagram to be 100% sure.   Ugh.

The Niles box seems to have undefeatable protection.

 

I can't think of a switch that anyone sells that allows 2 amps to toggle between 2 pairs of speakers.

It has a button on the front (right-most on the front) to enable/disable it.

 

For toggling amps, I did find this, but unfortunately you simply can't disable the speaker pairs. Close, but no cigar :(

post #1825 of 3116
Quote:
Originally Posted by Chris J View Post
 

 

I'm not too bright sometimes.

 

A one page interview with Klaus.

He loves vinyl. :tongue_smile:

Sweet!

post #1826 of 3116
Quote:
Originally Posted by brunk View Post
 

It has a button on the front (right-most on the front) to enable/disable it.

 

For toggling amps, I did find this, but unfortunately you simply can't disable the speaker pairs. Close, but no cigar :(

Actually I think you might be able to disable the speaker pairs! It's the big rectangular button, I just thought that was a place for a label. It makes sense now, because I just can't imagine this type of box without a disable switch :)

 

It DOES exist! :D


Edited by brunk - 12/6/13 at 6:51pm
post #1827 of 3116
Quote:
Originally Posted by brunk View Post
 

It has a button on the front (right-most on the front) to enable/disable it.

 

For toggling amps, I did find this, but unfortunately you simply can't disable the speaker pairs. Close, but no cigar :(

 

This looks like a nice A/B switcher and from the Q/A they say you can listen to 1 pair up to all speakers at once. Why would this not be a good dual speaker amp to headphone A/B switch?

 

Update: I posted this between your posts brunk. I'm going to order one. The owner's manual is here. The protection resistors can be removed from the circuit with a button on the back. The manual shows the old push button speaker connectors. The current unit uses "European style" removable bus. Thanks for the suggestion.

 

Update2: Order complete. Now I'll be able to properly A/B my Mjolnir and Tripath TA2024 amps :L3000: 


Edited by robrob - 12/6/13 at 7:10pm
post #1828 of 3116
Quote:
Originally Posted by robrob View Post
 

 

This looks like a nice A/B switcher and from the Q/A they say you can listen to 1 pair up to all speakers at once. Why would this not be a good dual speaker amp to headphone A/B switch?

 

Update: I posted this between your posts brunk. I'm going to order one. Thanks for the suggestion.

Hey, nice find!  Anyone know what they use to switch signals?  Relays, I'd expect.  Sealed, I'd hope.

post #1829 of 3116
Quote:
Originally Posted by brunk View Post
 

Changing the topic slightly here....

 

I need some help in selecting a speaker switch box, so I can toggle between my speakers and HE-6. I understand many units have amp protection with resistors to keep the impedance at roughly 8 ohms if you decide to run both A and B speakers at the same time. Some have the option to disable it, which is what I want. However, I am reading that some affect sound regardless. Anyways, what is a good low-cost switch box that has defeatable protection, and separate grounds?

 

I am looking at this switch so far, but I don't really know if it has dedicated grounds or not.

http://www.outdoorspeakerdepot.com/ishipo4pasps.html

 

another option I'm looking at is the Niles SPS-4

http://www.nilesaudio.com/images/legacy/manuals/sps4man.pdf

 

However, is there a switch like these where you can also toggle between two different amplifiers? This would be really nice, so I could use my speakers/headphones from 2 different amps!

 

Thanks in advance :)

All switches will affect sound quality regardless of protection circuit - not just "some" ... especially if you are after a low-cost solution.

post #1830 of 3116
Quote:
Originally Posted by robrob View Post
 

 

This looks like a nice A/B switcher and from the Q/A they say you can listen to 1 pair up to all speakers at once. Why would this not be a good dual speaker amp to headphone A/B switch?

 

Update: I posted this between your posts brunk. I'm going to order one. The owner's manual is here. Thanks for the suggestion.

 

Update2: Order complete. Now I'll be able to properly A/B my Mjolnir and Tripath TA2024 amps :L3000:

Yeah, it is a great find! Enjoy! :beerchug:

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