Fisher Studio Standard BA 6000 DC Power Amplifier

Soundstar1

Active Member

• Aug 17, 2014

• #1

Does anyone know if this amp can be bridged and used as a mono block. I can find much info on them except for specs. I would like to know if these amps can be tube modded too.


0.002% THD at rated power at 1 kHz
0.002% IMD at rated power at 1 kHz
Damping factor = 80
Crosstalk = 75dB
S/N ratio (DIN) 110dB
Frequency response at rated power = 20Hz to 20 kHz +/- 0.3dB

Your opinions are welcome

 

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KentTeffeteller

Gimpus Stereophilus!

• Aug 18, 2014

• #2

I doubt this is bridgeable. And no tube modded. It is what it is. Better than average Sanyo era Fisher. And pretty decent in good order.

 

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bowtie427ss

Lunatic Member

• Aug 18, 2014

• #3

STK/Darlington power pack equipped amplifier.

I'd avoid speakers with impedance less than 8 ohms, or with widely swinging impedance.

It should be a fine voltage source, but it's going to fall down if you try to pull much current(bridging, low impedance speakers) from it.

 

Soundstar1

Active Member

• Aug 19, 2014

• #4

How about using a y adaptor and hooking the + from the speaker to the + of the right channel on the amp then the - from the speaker and connect it to the + side on the right channel. Would that work

 

llwhtt

AK Subscriber

Subscriber

• Aug 19, 2014

• #5

One channel needs to be inverted for that to work. The two channels are rated for 8 Ohms each so when bridged you'll need a 16 Ohm speaker. I'd find another amplifier to use, if you blow up the STKs that's the end. The power cord is too short to use as an anchor.

Craig

 

Soundstar1

Active Member

• Aug 19, 2014

• #6

Fisher BA 6000

llwhtt said:

One channel needs to be inverted for that to work. The two channels are rated for 8 Ohms each so when bridged you'll need a 16 Ohm speaker. I'd find another amplifier to use, if you blow up the STKs that's the end. The power cord is too short to use as an anchor.

Craig

Click to expand...

Can I use a pre amp that has inverted capabilities

 

Soundstar1

Active Member

• Aug 19, 2014

• #7

Fisher BA 6000

I have a Scott lc-21 preamp with a phase selector switch. I believe that switch is used if you want to bridge a signal so that you can use a stereo amp as mono. Am I correct.. I have attached a pic

 

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Smwilli

Well-Known Member

• Aug 19, 2014

• #8

I am guessing that the phase switch reverses both channels. For bridging amps, only 1 channel gets inverted. Realise that if you do manage to bridge this amp, it will most likely end up getting destroyed.

 

Soundstar1

Active Member

• Aug 19, 2014

• #9

Maybe I will go with the hafler dh200/220 they make birding kits for them. I just like the sound and vu meters on my fisher ba 6000. Maybe I will install a set of vu meters on the hafler