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Speaker amps for headphones - Page 146

post #2176 of 3116
That is the draw back of speaker amps, but it's overall a very good solution . But amps do play tricks on us sometimes. The krell is a great amp in general. Superb detail . But as it was noted in past reviews it has a noise floor issue . It's a low hiss, even with speakers. As you raise the volume with no sound playing on speakers it gets louder. Now in normal listening it's fine with speakers . You have to know it's there and then you can't ignore it lol. But for headphones it's easily fished with a little attenuation. Orragami told me about bypassing the preamp so I did , great feature . But I have not tested it to see if the hiss has gone though.

Al. D
post #2177 of 3116

Remember this 2 amp x 4 speaker switch?

speaker selector

http://www.outdoorspeakerdepot.com/dsduso4zosps1.html

 

The round A/B button selects the amp and the square zone buttons turn the speakers on or off. Impedance protection for playing multiple speakers can be added or removed with a switch in the rear. It's rated for 70 watts per channel with impedance protection and 140 per channel without. The box's connectors can take up to 14 gauge speaker wire.

 

I finally got it installed and did some listening tests. I installed it in my basement TV room. I have a Sony A/V receiver with its own main, sub and surround speakers and a Yaqin MC-13S tube amp with its own stereo speakers. I also had a headphone adapter/resistor network connected to the Sony's 'B' speaker outputs.

 

This switch allowed me to connect the two amps (Sony's front left and front right speaker outs) to the box and connect the two sets of speakers and headphone adapter. Now I have the option to get rid of the Sony's main speakers because I can share my best speakers between the two amps. I can also easily switch my headphone adapter between the two amps. I like watching late night movies with the headphones. Since I don't run multiple speakers simultaneously I turned the impedance protection feature off. 

 

I cannot tell any difference in the sound quality with and without the switch box and I'm very happy with the added flexibility and simplicity this switch has added to my sound room.


Edited by robrob - 1/5/14 at 6:27pm
post #2178 of 3116

^ Glad to hear you enjoy your unit too! Such a value for the capability it provides.

 

Speaking of capability, I just picked up this Bench DMM for $645 shipped. :D I wanted to originally go with vintage Agilent, but the temp probe ability, measure down to 2nf and 10000uf capacitance, datalogging, and a less costlier calibration maintenance on top of the discount price i got, it was an offer i couldn't refuse lol. 


Edited by brunk - 1/5/14 at 6:49pm
post #2179 of 3116
I'm sure there is a difference but resolution does prevent us from hearing little changes. It's like USB cable s or interconnects. Enough people swear to it . So I'm guessing it's true but we all do not hear it . Why our systems . Let's face it I do not have a 400 k system so I can only here so much. I recently bought a really hi end dac . Wow what I can hear on cd,s I have for many years . Well the point is the same.

Al. D
post #2180 of 3116
Brunk you have some really nice stuff there buddy.
Al
post #2181 of 3116
Quote:
Originally Posted by ALRAINBOW View Post

Brunk you have some really nice stuff there buddy.
Al

Thanks Al!

post #2182 of 3116
Your welcome its to bad your in another state i coild hang with you and test brillant ideas together LMAO.

you are a really smart guy and always help,us all. Big thanks.

AL D
post #2183 of 3116
Quote:
Originally Posted by ALRAINBOW View Post

Your welcome its to bad your in another state i coild hang with you and test brillant ideas together LMAO.

you are a really smart guy and always help,us all. Big thanks.

AL D

Yeah, that would be cool to bounce ideas off each other. Thanks for the kind words Al, I appreciate it, and you're most welcome! :)

post #2184 of 3116
Quote:
Originally Posted by brunk View Post
 

^ Glad to hear you enjoy your unit too! Such a value for the capability it provides.

 

Speaking of capability, I just picked up this Bench DMM for $645 shipped. :D I wanted to originally go with vintage Agilent, but the temp probe ability, measure down to 2nf and 10000uf capacitance, datalogging, and a less costlier calibration maintenance on top of the discount price i got, it was an offer i couldn't refuse lol. 

You're getting quite the collection of equipment, there, brunk!  When can we expect the BrunkAmp-1?

post #2185 of 3116
Just as soon as he gets the digital CNC. Machining unit. He is buying the one kingwa sells right brunk. Remember to get the floor reinforced ok buddy.


Al
post #2186 of 3116
Quote:
Originally Posted by potterma View Post
 

You're getting quite the collection of equipment, there, brunk!  When can we expect the BrunkAmp-1?

 

Hopefully sooner than later! :D

Quote:
Originally Posted by ALRAINBOW View Post

Just as soon as he gets the digital CNC. Machining unit. He is buying the one kingwa sells right brunk. Remember to get the floor reinforced ok buddy.


Al

Gosh, If i could, i would, but i can't lol. However, I could just take a 30min trip to my Uncle's wonderland shop and do some cool stuff. No laser cutter though :/

post #2187 of 3116
Quote:
Originally Posted by robrob View Post
 

Remember this 2 amp x 4 speaker switch?

speaker selector

http://www.outdoorspeakerdepot.com/dsduso4zosps1.html

 

The round A/B button selects the amp and the square zone buttons turn the speakers on or off. Impedance protection for playing multiple speakers can be added or removed with a switch in the rear. It's rated for 70 watts per channel with impedance protection and 140 per channel without. The box's connectors can take up to 14 gauge speaker wire.

 

I finally got it installed and did some listening tests. I installed it in my basement TV room. I have a Sony A/V receiver with its own main, sub and surround speakers and a Yaqin MC-13S tube amp with its own stereo speakers. I also had a headphone adapter/resistor network connected to the Sony's 'B' speaker outputs.

 

This switch allowed me to connect the two amps (Sony's front left and front right speaker outs) to the box and connect the two sets of speakers and headphone adapter. Now I have the option to get rid of the Sony's main speakers because I can share my best speakers between the two amps. I can also easily switch my headphone adapter between the two amps. I like watching late night movies with the headphones. Since I don't run multiple speakers simultaneously I turned the impedance protection feature off. 

 

I cannot tell any difference in the sound quality with and without the switch box and I'm very happy with the added flexibility and simplicity this switch has added to my sound room.

So what are they using for switch gear in that thing?  Purely passive, I take it?

post #2188 of 3116

Yes, it's mechanical and passive switching. I didn't open it up because I thought someone had posted pictures of the internals already.

post #2189 of 3116
Quote:
Originally Posted by potterma View Post
 

So what are they using for switch gear in that thing?  Purely passive, I take it?

 

post #2190 of 3116

Thanks for the pics!

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