Undertow,
In Full Range mode the Gallo amp is 10Hz-28Hz. In Low-Pass mode the amp is 20Hz-180Hz. How can I get it to go down to 10Hz and up to 100Hz that you recommended? I think it would be one or the other, but the specs listed at the bottom of this post seem like the amp supports from 10Hz-200Hz. I just don't know *how* to set it up so that it goes from 10Hz to 100Hz that you suggested.
Is the amps impedence ok? Is it equal to the input sensitivity of 130mV? These are technical areas that are beyond my understanding.
I found them for $675 new with free shipping, so if you think it would be better than the Velodyne or the Monarchy amps I could still get one...or two.
I would have to run the Rane EQ if I use the Monarchy amps which is fine as long as it is the best solution. I would need a pair of XLR to RCA IC's, and I think you mentioned you still have pair.
Basically, I'm open to any of the three solutions you suggested. I just want to make sure whatever solution I use will be the best. Everything else I bought in my system is the best I could afford, so getting the best amp for the woofer arrays is my goal. I know I have a budget restriction, but these are three excellent options. Which do you suggest?
I understand there isn't a lot of music under 20Hz, but I do listen to classical and there are some organ pieces that get down there. The ability for the Zu's to get down to 16Hz was one of the principle reasons for my buying them over Cains, so I want a solution that will utilize the full bandwidth of the Zu's.
BTW, the Veloydyne SC-1250 was specifically made for the Velodyne SC subwoofers, none of which dip below 22hz. I think that's the reason the SC-1250 doesn't go below 30hz without a big drop off.
The Gallo has a "low noise" fan which I can't understand unless it is a class A amp. I don't think I'd hear it even at low listening levels anyway, but it's odd that it has a fan. I hope it isn't always on though. There are no specs for the noise level of the fan which I find odd given the amp is for stereophile applications.
Here are the technical specs for the Gallo:
The frequency response of this amplifier is 20Hz - 180Hz (Low-pass) and 10Hz - 28Hz (full range). It has 240 watts (stereo) or 600 watts (bridged) output. The dimension lists 17/19″ (W) (rack ears removable) x 4″ (H) x 14″ (D). It has possessed a weight of 25lbs. The input sensitivity is 130mV. Phases acquired are dual mono and continuously variable phases.
Output Power: 2 x 160 watts RMS @ 8 ohms
20Hz - 20kHz (stereo mode)
2 x 250 watts RMS @ 4 ohms
20Hz - 20kHz (stereo mode)
450 watts RMS @ 8 ohms
20Hz - 20kHz (mono mode)
650 watts RMS @ 4 ohms
20Hz - 20kHz (mono mode)
Distortion: 0.08% stereo, 0.1% mono
(low-pass @ 100Hz, level and xover at max, EQ at 0dB)
.01% stereo, 0.17% mono
(full-range, level at max)
Input Sensitivity: 130mV stereo, 110mV mono
Signal-to-Noise: 93dB stereo, 83dB mono
(low pass @ 100Hz, level and xover at max, EQ at 0dB)
93 dB stereo, 75dB mono
(full-range full-rated power @ 1kHz)
Load Impedance: 2 ohms or greater in stereo mode /
4 ohms or greater in mono mode
Bass EQ: 1W @ 35Hz (100Hz=0dB, level and xover at max, booster at 6dB)=6.2dB
1W @ 35Hz (100Hz=0dB, level and xover at max, booster at -3dB)=-3.2dB
Frequency Response: 15-200Hz low-pass (100Hz=0dB, level and xover at max, booster at 0dB)
<10Hz - 28kHz full-range (100Hz=0dB, level and xover at max, booster at 0dB)
Crossover: 40Hz low-pass, xover setting at minimum
200Hz low-pass, xover setting at maximum
Power Handling: 250 watts @ 4 ohms
160watts @ 8 ohms (In Stereo)
650 watts @ 4 ohms
450 watts @ 8 ohms (Bridged to mono)
12 Volt Trigger: Tip = (+) Sleeve = (-)
Auto-on Sensitivity: 5mV
Current Draw: 9A stereo, 13.5A mono
(level and xover at max, booster at 0dB)
Protection Circuitry: Short circuit, open circuit, RF burnout, over temp., speaker protection relays, Turn on/off transient protection, DC protection, and limiter circuitry
Temp. Protect: 60°C +/-5
Cooling: A low noise fan is utilized to draw cool air through the chassis using front and rear vents. Do not block the vents.
Power Requirements: 100 VAC 60Hz, 850VA
100-120 VAC 50/60Hz, 850VA
220-240 VAC 50/60Hz, 850VA
Connections: RCA inputs, 5-way binding posts
In Full Range mode the Gallo amp is 10Hz-28Hz. In Low-Pass mode the amp is 20Hz-180Hz. How can I get it to go down to 10Hz and up to 100Hz that you recommended? I think it would be one or the other, but the specs listed at the bottom of this post seem like the amp supports from 10Hz-200Hz. I just don't know *how* to set it up so that it goes from 10Hz to 100Hz that you suggested.
Is the amps impedence ok? Is it equal to the input sensitivity of 130mV? These are technical areas that are beyond my understanding.
I found them for $675 new with free shipping, so if you think it would be better than the Velodyne or the Monarchy amps I could still get one...or two.
I would have to run the Rane EQ if I use the Monarchy amps which is fine as long as it is the best solution. I would need a pair of XLR to RCA IC's, and I think you mentioned you still have pair.
Basically, I'm open to any of the three solutions you suggested. I just want to make sure whatever solution I use will be the best. Everything else I bought in my system is the best I could afford, so getting the best amp for the woofer arrays is my goal. I know I have a budget restriction, but these are three excellent options. Which do you suggest?
I understand there isn't a lot of music under 20Hz, but I do listen to classical and there are some organ pieces that get down there. The ability for the Zu's to get down to 16Hz was one of the principle reasons for my buying them over Cains, so I want a solution that will utilize the full bandwidth of the Zu's.
BTW, the Veloydyne SC-1250 was specifically made for the Velodyne SC subwoofers, none of which dip below 22hz. I think that's the reason the SC-1250 doesn't go below 30hz without a big drop off.
The Gallo has a "low noise" fan which I can't understand unless it is a class A amp. I don't think I'd hear it even at low listening levels anyway, but it's odd that it has a fan. I hope it isn't always on though. There are no specs for the noise level of the fan which I find odd given the amp is for stereophile applications.
Here are the technical specs for the Gallo:
The frequency response of this amplifier is 20Hz - 180Hz (Low-pass) and 10Hz - 28Hz (full range). It has 240 watts (stereo) or 600 watts (bridged) output. The dimension lists 17/19″ (W) (rack ears removable) x 4″ (H) x 14″ (D). It has possessed a weight of 25lbs. The input sensitivity is 130mV. Phases acquired are dual mono and continuously variable phases.
Output Power: 2 x 160 watts RMS @ 8 ohms
20Hz - 20kHz (stereo mode)
2 x 250 watts RMS @ 4 ohms
20Hz - 20kHz (stereo mode)
450 watts RMS @ 8 ohms
20Hz - 20kHz (mono mode)
650 watts RMS @ 4 ohms
20Hz - 20kHz (mono mode)
Distortion: 0.08% stereo, 0.1% mono
(low-pass @ 100Hz, level and xover at max, EQ at 0dB)
.01% stereo, 0.17% mono
(full-range, level at max)
Input Sensitivity: 130mV stereo, 110mV mono
Signal-to-Noise: 93dB stereo, 83dB mono
(low pass @ 100Hz, level and xover at max, EQ at 0dB)
93 dB stereo, 75dB mono
(full-range full-rated power @ 1kHz)
Load Impedance: 2 ohms or greater in stereo mode /
4 ohms or greater in mono mode
Bass EQ: 1W @ 35Hz (100Hz=0dB, level and xover at max, booster at 6dB)=6.2dB
1W @ 35Hz (100Hz=0dB, level and xover at max, booster at -3dB)=-3.2dB
Frequency Response: 15-200Hz low-pass (100Hz=0dB, level and xover at max, booster at 0dB)
<10Hz - 28kHz full-range (100Hz=0dB, level and xover at max, booster at 0dB)
Crossover: 40Hz low-pass, xover setting at minimum
200Hz low-pass, xover setting at maximum
Power Handling: 250 watts @ 4 ohms
160watts @ 8 ohms (In Stereo)
650 watts @ 4 ohms
450 watts @ 8 ohms (Bridged to mono)
12 Volt Trigger: Tip = (+) Sleeve = (-)
Auto-on Sensitivity: 5mV
Current Draw: 9A stereo, 13.5A mono
(level and xover at max, booster at 0dB)
Protection Circuitry: Short circuit, open circuit, RF burnout, over temp., speaker protection relays, Turn on/off transient protection, DC protection, and limiter circuitry
Temp. Protect: 60°C +/-5
Cooling: A low noise fan is utilized to draw cool air through the chassis using front and rear vents. Do not block the vents.
Power Requirements: 100 VAC 60Hz, 850VA
100-120 VAC 50/60Hz, 850VA
220-240 VAC 50/60Hz, 850VA
Connections: RCA inputs, 5-way binding posts