|
Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
|
Thread Tools |
20th May 2018, 2:36 pm | #1 |
Hexode
Join Date: Feb 2007
Location: Luton, Bedfordshire, UK.
Posts: 457
|
Howland west audio products tri channel control
Hi
For the princely sum of £1 I picked this up out of curiosity at the DDRC boot today. It seems to be a switching system to try up to 3 pairs of speakers from one amplifier. Bit confused about the “system with control” vs “systems without control”. I haven’t had time to pop the back off...seems nicely made in an early 70s KEF kind of look. Anyone know anything about this item? Thanks Mike |
20th May 2018, 5:00 pm | #2 |
Dekatron
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,338
|
Re: Howland west audio products tri channel control
I certainly remember Howland West and vaguely remember these. Perhaps it works like a Hafler circuit? I tended to avoid devices like this because of a risk of insertion loss.
__________________
Edward. |
20th May 2018, 6:10 pm | #3 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,901
|
Re: Howland west audio products tri channel control
I think system without control routes the amplifier direct to a speaker pair. "With control" routes it via those resistive attenuators on the front panel to allow the loudness of each speaker pair to be set equal* I expect it was used in a hifi shop for comparing speakers in those genteel days before magic wires reared their heads and no-one worried about damping factors.
* or a rather fly salesman can set the pair with the greatest sales commission just a little bit louder than the others! David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
20th May 2018, 8:29 pm | #4 |
Hexode
Join Date: Feb 2007
Location: Luton, Bedfordshire, UK.
Posts: 457
|
Re: Howland west audio products tri channel control
Thanks gents....the pots feel like wire wound jobs.....I’ll give it a go when I get the chance as I have two sets of speakers in the same room but on separate amps, might be interesting to mess about with. It’s heavy and feels like a solid bit of kit.
Mike |