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Forum Karma Share-100 Posts Required
Thought I'd offer these up for a forum share so others can see if they prefer them over spikes. I removed them from my SDA-converted 8TL's and will not be setting them back up as RTA's.
Chime in if interested and I'll pay to ship US-48. Keep them a few weeks until someone else wants to try them and pass them on.
https://forum.polkaudio.com/discussion/197223/seismic-ball-bearing-isolators?utm_source=community-search&utm_medium=organic-search&utm_term=seismic+ball
Chime in if interested and I'll pay to ship US-48. Keep them a few weeks until someone else wants to try them and pass them on.
https://forum.polkaudio.com/discussion/197223/seismic-ball-bearing-isolators?utm_source=community-search&utm_medium=organic-search&utm_term=seismic+ball
xschop
4 ·
Re: Mid life crisis,Yea or Nay???
If that's a current pic, you took some seriously good care of it!
bcwsrt
2 ·
Re: Monitor 7A Resurrection - Advice Needed
If you are going to go the full baffle replacement route you could go with 1" MDF or maybe even HDF if you know someone who works in a cabinet shop that can get it. You could put a 1/4" chamfer on the outer edge and 1/4" rabbeted construction so that the internal volume remains the same.
I wouldn't worry about chamfering the inside edge of the baffle if you kept the baffle 3/4" and countersunk the drivers. I'd definitely do it with a 1" baffle though.
The SL2500 only came with the M7 Series II which had a different crossover from the 7C. To use the RD0-198 you have to either do the TL mod to the 7C crossover or get the Series II crossover.
PS: It is possible that the passive radiator in the 7C and Series II could have had a different tuning mass compared to the 7B and 7A, because it is based upon the midwoofer it is paired with and the enclosure volume. See if the seller has the passives too.
I wouldn't worry about chamfering the inside edge of the baffle if you kept the baffle 3/4" and countersunk the drivers. I'd definitely do it with a 1" baffle though.
The SL2500 only came with the M7 Series II which had a different crossover from the 7C. To use the RD0-198 you have to either do the TL mod to the 7C crossover or get the Series II crossover.
PS: It is possible that the passive radiator in the 7C and Series II could have had a different tuning mass compared to the 7B and 7A, because it is based upon the midwoofer it is paired with and the enclosure volume. See if the seller has the passives too.
Gardenstater
1 ·
FOR SALE: ATI Amplifier AT3000 3007 7 x 300 Watt
Fully balanced amplifier from ATI made in USA in California. 300 Watts into 8 ohms, 450 Watts into 4ohm. AT3007, SEVEN Channels. Two Toroidal transformers! Heavy duty. Replaced my Emotiva XPA-5 and blew it out of the water. Looking to go in a different direction with Class D and save my back from this 140lb monster.
In good working condition. One binding post is partially broken but workable with banana plugs and bare wire.
ATI is the manufacturer for larger manufacturers such as Outlaw, Mark Levinson, Adcom, Lexicon
ATI's "Pure Balance"® technology introduces a range of models that feature true differential design; balanced from input to output. This design allows the quietest and purest reproduction of the audio signal. Power output is 300 Watts RMS/channel into 8 ohms from 20Hz to 20kHz with no more than 0.03% THD and I.M. distortion.
Remote Trigger:
Activated from 3.3VDC to 24 VDC via a heavy-duty relay.
Protection Circuits:
Optically coupled with full automatic reset.
Toroid Transformers:
40% more efficient than EI type. Separate bi-filar windings for each channel guaranty lower noise and crosstalk.
Circuit Boards:
Double-sided, FR-4 glass-epoxy, computer-grade boards are assembled in-house.
Soft Start Circuitry:
Ultra soft turn on reduces in-rush current to a minimum. Multiple units can be turned on without tripping circuit breakers eliminating the need for sequencing.
Power Transistors:
High-current, bi-polar output transistors with active bias circuits result in effortless operation.
Power Cord:
Detachable, 3-wire cord, 20 amp circuit.
7 Year Warranty:
Parts and labor against defects in parts or workmanship.
Dimensions:
17"w X 8.75"h X 18"d (chassis)
Local Pick up in 92677. ASKING 2300.
In good working condition. One binding post is partially broken but workable with banana plugs and bare wire.
ATI is the manufacturer for larger manufacturers such as Outlaw, Mark Levinson, Adcom, Lexicon
ATI's "Pure Balance"® technology introduces a range of models that feature true differential design; balanced from input to output. This design allows the quietest and purest reproduction of the audio signal. Power output is 300 Watts RMS/channel into 8 ohms from 20Hz to 20kHz with no more than 0.03% THD and I.M. distortion.
Remote Trigger:
Activated from 3.3VDC to 24 VDC via a heavy-duty relay.
Protection Circuits:
Optically coupled with full automatic reset.
Toroid Transformers:
40% more efficient than EI type. Separate bi-filar windings for each channel guaranty lower noise and crosstalk.
Circuit Boards:
Double-sided, FR-4 glass-epoxy, computer-grade boards are assembled in-house.
Soft Start Circuitry:
Ultra soft turn on reduces in-rush current to a minimum. Multiple units can be turned on without tripping circuit breakers eliminating the need for sequencing.
Power Transistors:
High-current, bi-polar output transistors with active bias circuits result in effortless operation.
Power Cord:
Detachable, 3-wire cord, 20 amp circuit.
7 Year Warranty:
Parts and labor against defects in parts or workmanship.
Dimensions:
17"w X 8.75"h X 18"d (chassis)
Local Pick up in 92677. ASKING 2300.
aboroth00
1 ·
Re: Strictly Jazz - Suggestions and a discussion about the music.
My favorite Miles Album, Workin’ With:
I know everyone who likes Jazz, knows Miles Davis, but if you haven’t heard this album, you need to.
I know everyone who likes Jazz, knows Miles Davis, but if you haven’t heard this album, you need to.
headrott
2 ·