I've got Carver TFM-15, TFM-25 and TFM-35 amps that I use for a three way actively amplified speaker consisting of:
Altec 811B horns
Eminence Delta pro12A for midbass
Dayton Audio 12" subs
I currently use a DBX 234XS crossover which works fine except there is solid state hiss heard in the horns due to the TFM-15 not having any markings on the front panel for the input level controls nor does it have pots with detents. So there's no easy way to ensure the controls are set the same way every time the system gets used to DJ with.
I would prefer an analog crossover, but if there's a DSP crossover that is good enough for actual HI-FI use I'd be interested in that as well. The crossover also needs to be low noise as well given the Altec horns are quite efficient.
Altec 811B horns
Eminence Delta pro12A for midbass
Dayton Audio 12" subs
I currently use a DBX 234XS crossover which works fine except there is solid state hiss heard in the horns due to the TFM-15 not having any markings on the front panel for the input level controls nor does it have pots with detents. So there's no easy way to ensure the controls are set the same way every time the system gets used to DJ with.
I would prefer an analog crossover, but if there's a DSP crossover that is good enough for actual HI-FI use I'd be interested in that as well. The crossover also needs to be low noise as well given the Altec horns are quite efficient.
The issue is the solid state hiss that comes from the crossover so padding the horn with an l-pad won't eliminate that issue.
I can either:
1. Get a quieter crossover.
2. Build a quieter crossover.
3. Pad down the input with a 75k resistor in series with the 50k level pot.
4. Find some small stepped attenuators that will fit the stock level control locations
5. Replace the pots with a fixed voltage divider.
I could go with a Behringer ultradrive
https://www.behringer.com/product.html?modelCode=0825-AAA
Or
DBX DriveRack
https://dbxpro.com/en-US/products/driverack-venu360
https://dbxpro.com/en-US/products/driverack-260
https://dbxpro.com/en-US/products/driverack-pa2
But I don't know how good they are for HI-FI.
Dayton Audio also makes a DSP.
https://www.amazon.com/Dayton-Audio-DSP-408-Digital-Processor/dp/B07D3H5X5V
I can either:
1. Get a quieter crossover.
2. Build a quieter crossover.
3. Pad down the input with a 75k resistor in series with the 50k level pot.
4. Find some small stepped attenuators that will fit the stock level control locations
5. Replace the pots with a fixed voltage divider.
I could go with a Behringer ultradrive
https://www.behringer.com/product.html?modelCode=0825-AAA
Or
DBX DriveRack
https://dbxpro.com/en-US/products/driverack-venu360
https://dbxpro.com/en-US/products/driverack-260
https://dbxpro.com/en-US/products/driverack-pa2
But I don't know how good they are for HI-FI.
Dayton Audio also makes a DSP.
https://www.amazon.com/Dayton-Audio-DSP-408-Digital-Processor/dp/B07D3H5X5V
I do have a JBL MS-8 DSP that I used in a 2005 CRV for several years and it sounded great.
I could repurpose that, however it also has built in amplifiers so I'd need a several amp 12 volt supply to power it with.
It also has an auto setup feature using a headset with two mics in it so I'm not sure how well that will work with the stereo speakers given it's meant for car audio.
I could repurpose that, however it also has built in amplifiers so I'd need a several amp 12 volt supply to power it with.
It also has an auto setup feature using a headset with two mics in it so I'm not sure how well that will work with the stereo speakers given it's meant for car audio.
The sensitivity of the TFM-35 is 1.5V for rated power output.
The sensitivity of the TFM-25 is 1.5V for rated power output.
Doesn't say what the sensitivity of the TFM-15 is, but it's likely 1.5V.
So that would definitely work provided there's no solid state hiss coming from the Minidsp.
That said how good does the Minidsp sound?
The sensitivity of the TFM-25 is 1.5V for rated power output.
Doesn't say what the sensitivity of the TFM-15 is, but it's likely 1.5V.
So that would definitely work provided there's no solid state hiss coming from the Minidsp.
That said how good does the Minidsp sound?
increase the signal level to the xover either externally or internally, then reduce the outputs of the xover.
The problem is there's some solid state hiss coming from after the high frequency level control so it's likely coming from a stage there. I would have to figure out which stage is noisy and drop the level after that stage.
That said I could see what OP-AMPs are used and look for a suitable low noise OP-AMP to replace them with.
However I do like the Minidsp provided it doesn't put out any solid state hiss and has a good DAC and ADC.
That said I could see what OP-AMPs are used and look for a suitable low noise OP-AMP to replace them with.
However I do like the Minidsp provided it doesn't put out any solid state hiss and has a good DAC and ADC.