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KLH Five mids for a project- filter or no?

tyella

tyella

Super Member
I'm thinking of building a Raspberry Pi music server for the kitchen. I've got the Pi, a HiFiBerry DAC and a touchscreen. The thought was to use a TPA3116 or TDA7297 amp to feed a couple of mids from the KLH Five. This is the same driver (I've read) used in the KLH Twenty One and purportedly sounds great for its size.

Does anyone know if there is some equalization applied with the KLH Twenty One? Do I run the driver full signal, or should I filter it with a capacitor? If so what value?

I'm hoping to use parts on hand, but if a pair of purchased drivers are a better choice, I'm all ears.
 
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the KLH 19's and the mids of the five used one each in what had been a realistic solo 4. tuned to 60Hz. The mids lost some of their high end in this box so I added one of the little Audax plastic tweeters crossover up at 6.5-7KHz to add some sparkle, at 12db per, up and down. Not sure of the numbers but just used online calculator and adjusted by ear to suit. Been a while I'm not sure I can find the work sheets. They do sound better then you might expect.
 
borus said:
the KLH 19's and the mids of the five used one each in what had been a realistic solo 4. tuned to 60Hz. The mids lost some of their high end in this box so I added one of the little Audax plastic tweeters crossover up at 6.5-7KHz to add some sparkle, at 12db per, up and down. Not sure of the numbers but just used online calculator and adjusted by ear to suit. Been a while I'm not sure I can find the work sheets. They do sound better then you might expect.
Click to expand...

Thanks, Boris! I hadn't considered adding a tweeter, but it makes sense.
 
Those speakers were originally used alone as a full range speaker in a sealed, acoustic suspension enclosure for the Model Eleven suitcase stereo and subsequent variations.
 
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jlovda said:
Those speakers were originally used alone as a full range speaker in a sealed, acoustic suspension enclosure for the Model Eleven suitcase stereo and subsequent variations.
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That's what I thought, but was wondering about equalization or filtering. Should I limit the low frequencies in front of the driver?
 
And now I'm looking at some M&K coaxs on apexjr and considering dropping the KLH mids. So many options!
 
I think it depends what you want to hear. Box tuned to 60hz says a lot. If you want them to go lower than your asking for trouble. A kitchen system with smallish box would not require a filter.
 
Nice one..! Did someone mention Model Five mids? I bought these as backups in case my Five's ever blew a mid-driver but I never actually tried them out, believe it or not. Now I might need to try them. If you need any specs to compare, I'd be happy to help out.

Model Fifteen:
IMG_7018.jpg
 
darkhosis said:
Nice one..! Did someone mention Model Five mids? I bought these as backups in case my Five's ever blew a mid-driver but I never actually tried them out, believe it or not. Now I might need to try them. If you need any specs to compare, I'd be happy to help out.

Model Fifteen:
View attachment 1229113
Click to expand...
I bought a pair of 15's a few years ago off CL. There seem to have been two variations regarding the cabinets. Mine are junk. Yours look to be of better quality. The four sides and front edges are very nice walnut veneer. The front baffle board and rear on mine were just thin Masonite loosely screwed in. The grille cloth was wrapped around the baffle. Not sealed at all. I removed the speakers and the front and rear Masonite and am thinking of fixing things up with thicker wood properly attached and sealed. I would put one speaker in it like the acoustic suspension Model 11. One note. The two speakers in the 15's are 4 ohms connected in series. I think all the others are 8 ohms.
 
darkhosis said:
Nice one..! Did someone mention Model Five mids? I bought these as backups in case my Five's ever blew a mid-driver but I never actually tried them out, believe it or not. Now I might need to try them. If you need any specs to compare, I'd be happy to help out.

Model Fifteen:
View attachment 1229113
Click to expand...

Hi darkhosis. I'm guessing there is no crossover or filtering on those. Is that correct?
 
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