Home |
Search |
Today's Posts |
#1
Posted to rec.audio.high-end
|
|||
|
|||
passive preamp for a class CAP-101
I have a Classe CAP-101 integrated amp, matched with Thiel 1.5
speakers. I would like to front the unit with a passive preamp, not expensive, and I'm (1) wondering if there are some recs, and (2) how much coloration I could expect, both in general and specifically. Here's why: I have a long standing problem with the remote control of the unit. The problem is with the IR unit inside the amp, not in the hand-held control. It's not a totally consistent problem, but most often it doesn't work at all. When it does work it's after the unit has been off quite a while. After some time, or not a lot of time, it will stop working again. I don't think it's the hand unit because I've tried three of them with the same result. Called Classe, was told to call B&W, and spoke to someone who was knowledgeable and helpful. He said the obvious: they could fix the unit but couldn't estimate the cost until they did. In answer to my question he said that the average repair for the CAP-101 runs about $500. A local pro shop which I trust said "We quote a fairly high labor range for these because they can be complex. We will reduce it at our discretion but the initial estimate would be $126-$332 parts and labor." As an alternative (and because I don't like the the Classe remote), I thought of fronting the CAP-101 with a passive preamp as there's no amp in on the CAP-101. My theory (hope?) is that the passive preamp, since it doesn't mess with the line signal, will provide the volume control, source line switching, and perhaps tone control. And, of course, a remote. Any thoughts most appreciated! |
#2
Posted to rec.audio.high-end
|
|||
|
|||
passive preamp for a class CAP-101
On Tue, 20 Oct 2009 06:07:04 -0700, yirgster wrote
(in article ): I have a Classe CAP-101 integrated amp, matched with Thiel 1.5 speakers. I would like to front the unit with a passive preamp, not expensive, and I'm (1) wondering if there are some recs, and (2) how much coloration I could expect, both in general and specifically. Here's why: I have a long standing problem with the remote control of the unit. The problem is with the IR unit inside the amp, not in the hand-held control. It's not a totally consistent problem, but most often it doesn't work at all. When it does work it's after the unit has been off quite a while. After some time, or not a lot of time, it will stop working again. I don't think it's the hand unit because I've tried three of them with the same result. Called Classe, was told to call B&W, and spoke to someone who was knowledgeable and helpful. He said the obvious: they could fix the unit but couldn't estimate the cost until they did. In answer to my question he said that the average repair for the CAP-101 runs about $500. A local pro shop which I trust said "We quote a fairly high labor range for these because they can be complex. We will reduce it at our discretion but the initial estimate would be $126-$332 parts and labor." As an alternative (and because I don't like the the Classe remote), I thought of fronting the CAP-101 with a passive preamp as there's no amp in on the CAP-101. My theory (hope?) is that the passive preamp, since it doesn't mess with the line signal, will provide the volume control, source line switching, and perhaps tone control. And, of course, a remote. Any thoughts most appreciated! Doubtful that a passive "preamp" will have tone controls, as they have an insertion loss. Never saw one with a remote control, but they will have source switching and volume. But, and here's the catch.... Every passive preamp I've ever encountered costs more than either estimate to repair your Classe CAP-101. These passive units are high-ticket items. I know, I know, there's nothing in them, but the market for these things is the real "tweaky", neurotic high-end, apparently. |
#3
Posted to rec.audio.high-end
|
|||
|
|||
passive preamp for a class CAP-101
On Oct 20, 4:24=A0pm, Sonnova wrote:
On Tue, 20 Oct 2009 06:07:04 -0700, yirgster wrote (in article ): I have a Classe CAP-101 integrated amp, matched with Thiel 1.5 speakers. I would like to front the unit with a passive preamp, not expensive, and I'm (1) wondering if there are some recs, and (2) how much coloration I could expect, both in general and specifically. Here's why: I have a long standing problem with the remote control of the unit. The problem is with the IR unit inside the amp, not in the hand-held control. It's not a totally consistent problem, but most often it doesn't work at all. When it does work it's after the unit has been off quite a while. After some time, or not a lot of time, it will stop working again. I don't think it's the hand unit because I've tried three of them with the same result. Called Classe, was told to call B&W, and spoke to someone who was knowledgeable and helpful. He said the obvious: they could fix the unit but couldn't estimate the cost until they did. In answer to my question he said that the average repair for the CAP-101 runs about $500. A local pro shop which I trust said "We quote a fairly high labor range for these because they can be complex. We will reduce it at our discretion but the initial estimate would be $126-$332 parts and labor." As an alternative (and because I don't like the the Classe remote), I thought of fronting the CAP-101 with a passive preamp as there's no amp in on the CAP-101. Thanks for your response. There are a few small passive preamps that have a remote. They are expensive enough, without, as you point out any apparent reason, that I'm not interested, except that: My younger son, an audiophile headphone junkie, while looking for something else, spied this new unit: the MASS Pre Amplifier from Audiophile Products. http://www.audiophileproducts.com/masspreamp It has two inputs. No tone control, but does come with a remote. I'd use a splitter to get a 3rd input line. It's $217 which I'm more than willing to go for. Here's my question though: will it, or is it likely to, color the sound, and if so by how much when it's fed into the preamp section of my Classe CAP-101 integrated amp? Ballpark of course. My theory (hope?) is that the passive preamp, since it doesn't mess with the line signal, will provide the volume control, source line switching, and perhaps tone control. And, of course, a remote. Any thoughts most appreciated! Doubtful that a passive "preamp" will have tone controls, as they have an insertion loss. Never saw one with a remote control, but they will have source switching and volume. But, and here's the catch.... Every passive preamp I've ever encountered costs more than either estimate to repair yo= ur Classe CAP-101. These passive units are high-ticket items. I know, I know= , there's nothing in them, but the market for these things is the real "tweaky", neurotic high-end, apparently. =A0 |
#4
Posted to rec.audio.high-end
|
|||
|
|||
passive preamp for a class CAP-101
"yirgster" wrote in message
There are a few small passive preamps that have a remote. They are expensive enough, without, as you point out any apparent reason, that I'm not interested, except that: My younger son, an audiophile headphone junkie, while looking for something else, spied this new unit: the MASS Pre Amplifier from Audiophile Products. http://www.audiophileproducts.com/masspreamp It has two inputs. No tone control, but does come with a remote. I'd use a splitter to get a 3rd input line. It's $217 which I'm more than willing to go for. Here's my question though: will it, or is it likely to, color the sound, and if so by how much when it's fed into the preamp section of my Classe CAP-101 integrated amp? Ballpark of course. I did some checking, and found that this has the potential to be a fine-sounding product. Its *active ingredient* is the TI PGA 2310 chip, http://focus.ti.com/lit/ds/symlink/pga2310.pdf This is a chip with a purely analog signal path which has: Two Independent Audio Channels Serial Control Interface Zero Crossing Detection WIDE GAIN AND ATTENUATION RANGE: +31.5dB to -95.5dB with 0.5dB Steps 120dB Dynamic Range 0.0004% THD+N at 1kHz Crosstalk -126dBFS NOISE-FREE LEVEL TRANSITIONS This chip is apparently a replacement for the CS 3310, a Crystal Semiconductor chip that has been used as the keystone of high end audio controllers over over a decade, including one by Jeff Roland. If memory serves, the PGA 2310 outperforms the CS3310 by about an order of magnitude (10 times!). This is all good. The zero-crossing feature should give it an audibly silky smoothness when you change its functioning. I can't guarantee that the performance of the core chip in the MASS audio controller wasn't screwed up when they put it together, but the potential for extremely good sound quality is there. You presumably have the option of listening to your son's, which I would heartily recommend. If it sounds good to you, it might be a very worthwhile investment both now, and for the foreseeable future. |
#5
Posted to rec.audio.high-end
|
|||
|
|||
passive preamp for a class CAP-101
On Oct 23, 5:21=A0am, "Arny Krueger" wrote:
"yirgster" wrote in message [ excessive quoting snipped -- dsr ] I can't guarantee that the performance of the core chip in the MASS audio controller wasn't screwed up when they put it together, but the potential for extremely good sound quality is there. You presumably have the option= of listening to your son's, which I would heartily recommend. If it sounds g= ood to you, it might be a very worthwhile investment both now, and for the foreseeable future. Thank you very much!!! I'm ordering it. Maybe I can get it from amazon so easy return if it doesn't work out. Can't listen to my son's though because he doesn't have one. He saw it while browsing for other stuff and thought it might do the job. |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Passive Preamp? | Vacuum Tubes | |||
Passive preamp | Vacuum Tubes | |||
WTB: Creek OBH-10 passive preamp | Marketplace | |||
WTB: Creek OBH-10 passive preamp | Marketplace | |||
Passive Volume Control (Passive Preamp) Info | High End Audio |